sys/arch/news68k/include/cpu.h

   1 /*      $NetBSD: cpu.h,v 1.34 2009/07/29 17:45:39 rmind 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 _NEWS68K_CPU_H_
  80 #define _NEWS68K_CPU_H_
  81
  82 #if defined(_KERNEL)
  83
  84 /*
  85  * Exported definitions unique to news68k cpu support.
  86  */
  87
  88 #if defined(_KERNEL_OPT)
  89 #include "opt_lockdebug.h"
  90 #endif
  91
  92 /*
  93  * Get common m68k CPU definitions.
  94  */
  95 #include <m68k/cpu.h>
  96
  97 /*
  98  * XXX news1700 L2 cache would be corrupted with DC_BE and IC_BE...
  99  * XXX Should these be defined in machine/cpu.h?
 100  */
 101 #undef CACHE_ON
 102 #undef CACHE_CLR
 103 #undef IC_CLEAR
 104 #undef DC_CLEAR
 105 #define CACHE_ON        (DC_WA|DC_CLR|DC_ENABLE|IC_CLR|IC_ENABLE)
 106 #define CACHE_CLR       CACHE_ON
 107 #define IC_CLEAR        (DC_WA|DC_ENABLE|IC_CLR|IC_ENABLE)
 108 #define DC_CLEAR        (DC_WA|DC_CLR|DC_ENABLE|IC_ENABLE)
 109
 110 #define DCIC_CLR        (DC_CLR|IC_CLR)
 111 #define CACHE_BE        (DC_BE|IC_BE)
 112
 113 /*
 114  * Get interrupt glue.
 115  */
 116 #include <machine/intr.h>
 117
 118 #include <sys/cpu_data.h>
 119 struct cpu_info {
 120         struct cpu_data ci_data;        /* MI per-cpu data */
 121         cpuid_t ci_cpuid;
 122         int     ci_mtx_count;
 123         int     ci_mtx_oldspl;
 124         int     ci_want_resched;
 125 };
 126
 127 extern struct cpu_info cpu_info_store;
 128
 129 #define curcpu()                        (&cpu_info_store)
 130
 131 /*
 132  * definitions of cpu-dependent requirements
 133  * referenced in generic code
 134  */
 135 #define cpu_number()                    0
 136
 137 void    cpu_proc_fork(struct proc *, struct proc *);
 138
 139 /*
 140  * Arguments to hardclock and gatherstats encapsulate the previous
 141  * machine state in an opaque clockframe.  One the hp300, we use
 142  * what the hardware pushes on an interrupt (frame format 0).
 143  */
 144 struct clockframe {
 145         u_short sr;             /* sr at time of interrupt */
 146         u_long  pc;             /* pc at time of interrupt */
 147         u_short vo;             /* vector offset (4-word frame) */
 148 };
 149
 150 #define CLKF_USERMODE(framep)   (((framep)->sr & PSL_S) == 0)
 151 #define CLKF_PC(framep)         ((framep)->pc)
 152 #if 0
 153 /* We would like to do it this way... */
 154 #define CLKF_INTR(framep)       (((framep)->sr & PSL_M) == 0)
 155 #else
 156 /* but until we start using PSL_M, we have to do this instead */
 157 #include <machine/intr.h>
 158 #define CLKF_INTR(framep)       (idepth > 1)    /* XXX */
 159 #endif
 160
 161
 162 /*
 163  * Preempt the current process if in interrupt from user mode,
 164  * or after the current trap/syscall if in system mode.
 165  */
 166 #define cpu_need_resched(ci, flags)     \
 167         do { ci->ci_want_resched = 1; aston(); } while (/* CONSTCOND */0)
 168
 169 /*
 170  * Give a profiling tick to the current process when the user profiling
 171  * buffer pages are invalid.  On the hp300, request an ast to send us
 172  * through trap, marking the proc as needing a profiling tick.
 173  */
 174 #define cpu_need_proftick(l)    \
 175         do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */0)
 176
 177 /*
 178  * Notify the current process (p) that it has a signal pending,
 179  * process as soon as possible.
 180  */
 181 #define cpu_signotify(l)        aston()
 182
 183 extern int astpending;          /* need to trap before returning to user mode */
 184 extern volatile u_char *ctrl_ast;
 185 #define aston()         \
 186         do { astpending++; *ctrl_ast = 0xff; } while (/* CONSTCOND */0)
 187
 188 #endif /* _KERNEL */
 189
 190 /*
 191  * CTL_MACHDEP definitions.
 192  */
 193 #define CPU_CONSDEV             1       /* dev_t: console terminal device */
 194 #define CPU_MAXID               2       /* number of valid machdep ids */
 195
 196 #ifdef _KERNEL
 197
 198 #if defined(news1700) || defined(news1200)
 199 #ifndef M68030
 200 #define M68030
 201 #endif
 202 #define M68K_MMU_MOTOROLA
 203 #endif
 204
 205 #if defined(news1700)
 206 #define CACHE_HAVE_PAC
 207 #endif
 208
 209 #endif
 210
 211 #ifdef _KERNEL
 212 extern int systype;
 213 #define NEWS1700        0
 214 #define NEWS1200        1
 215
 216 extern int cpuspeed;
 217 extern char *intiobase, *intiolimit, *extiobase;
 218 extern u_int intiobase_phys, intiotop_phys;
 219 extern u_int extiobase_phys, extiotop_phys;
 220 extern u_int intrcnt[];
 221
 222 extern void (*vectab[])(void);
 223
 224 struct frame;
 225 struct fpframe;
 226
 227 /* locore.s functions */
 228 void m68881_save(struct fpframe *);
 229 void m68881_restore(struct fpframe *);
 230
 231 int suline(void *, void *);
 232 void loadustp(int);
 233 void badtrap(void);
 234 void intrhand_vectored(void);
 235 int getsr(void);
 236
 237
 238 void doboot(int)
 239         __attribute__((__noreturn__));
 240 void nmihand(struct frame *);
 241 void ecacheon(void);
 242 void ecacheoff(void);
 243
 244 /* machdep.c functions */
 245 int badaddr(void *, int);
 246 int badbaddr(void *);
 247
 248 #endif
 249
 250 /* physical memory sections */
 251 #define ROMBASE         0xe0000000
 252
 253 #define INTIOBASE1700   0xe0c00000
 254 #define INTIOTOP1700    0xe1d00000 /* XXX */
 255 #define EXTIOBASE1700   0xf0f00000
 256 #define EXTIOTOP1700    0xf1000000 /* XXX */
 257 #define CTRL_POWER1700  0xe1380000
 258 #define CTRL_LED1700    0xe0dc0000
 259
 260 #define INTIOBASE1200   0xe1000000
 261 #define INTIOTOP1200    0xe1d00000 /* XXX */
 262 #define EXTIOBASE1200   0xe4000000
 263 #define EXTIOTOP1200    0xe4020000 /* XXX */
 264 #define CTRL_POWER1200  0xe1000000
 265 #define CTRL_LED1200    0xe1500001
 266
 267 #define MAXADDR         0xfffff000
 268
 269 /*
 270  * Internal IO space:
 271  *
 272  * Internal IO space is mapped in the kernel from ``intiobase'' to
 273  * ``intiolimit'' (defined in locore.s).  Since it is always mapped,
 274  * conversion between physical and kernel virtual addresses is easy.
 275  */
 276 #define ISIIOVA(va) \
 277         ((char *)(va) >= intiobase && (char *)(va) < intiolimit)
 278 #define IIOV(pa)        (((u_int)(pa) - intiobase_phys) + (u_int)intiobase)
 279 #define ISIIOPA(pa) \
 280         ((u_int)(pa) >= intiobase_phys && (u_int)(pa) < intiotop_phys)
 281 #define IIOP(va)        (((u_int)(va) - (u_int)intiobase) + intiobase_phys)
 282 #define IIOPOFF(pa)     ((u_int)(pa) - intiobase_phys)
 283
 284 /* XXX EIO space mapping should be modified like hp300 XXX */
 285 #define EIOSIZE         (extiotop_phys - extiobase_phys)
 286 #define ISEIOVA(va) \
 287         ((char *)(va) >= extiobase && (char *)(va) < (char *)EIOSIZE)
 288 #define EIOV(pa)        (((u_int)(pa) - extiobase_phys) + (u_int)extiobase)
 289
 290 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC)
 291 #define M68K_CACHEOPS_MACHDEP
 292 #endif
 293
 294 #ifdef CACHE_HAVE_PAC
 295 #define M68K_CACHEOPS_MACHDEP_PCIA
 296 #endif
 297
 298 #ifdef CACHE_HAVE_VAC
 299 #define M68K_CACHEOPS_MACHDEP_DCIA
 300 #define M68K_CACHEOPS_MACHDEP_DCIS
 301 #define M68K_CACHEOPS_MACHDEP_DCIU
 302 #endif
 303
 304 #endif /* !_NEWS68K_CPU_H_ */