sys/arch/hp300/include/cpu.h

   1 /*      $NetBSD: cpu.h,v 1.61 2009/10/21 21:11:59 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 _HP300_CPU_H_
  80 #define _HP300_CPU_H_
  81
  82 #if defined(_KERNEL)
  83
  84 #if defined(_KERNEL_OPT)
  85 #include "opt_lockdebug.h"
  86 #endif
  87
  88 /*
  89  * Exported definitions unique to hp300/68k cpu support.
  90  */
  91
  92 /*
  93  * Get common m68k CPU definitions.
  94  */
  95 #include <m68k/cpu.h>
  96 #include <machine/hp300spu.h>
  97
  98 /*
  99  * Get interrupt glue.
 100  */
 101 #include <machine/intr.h>
 102
 103 #include <sys/cpu_data.h>
 104 struct cpu_info {
 105         struct cpu_data ci_data;        /* MI per-cpu data */
 106         cpuid_t ci_cpuid;
 107         int     ci_mtx_count;
 108         int     ci_mtx_oldspl;
 109         int     ci_want_resched;
 110 };
 111
 112 extern struct cpu_info cpu_info_store;
 113
 114 #define curcpu()        (&cpu_info_store)
 115
 116 /*
 117  * definitions of cpu-dependent requirements
 118  * referenced in generic code
 119  */
 120 #define cpu_number()                    0
 121
 122 void    cpu_proc_fork(struct proc *, struct proc *);
 123
 124 /*
 125  * Arguments to hardclock and gatherstats encapsulate the previous
 126  * machine state in an opaque clockframe.  One the hp300, we use
 127  * what the hardware pushes on an interrupt (frame format 0).
 128  */
 129 struct clockframe {
 130         u_short sr;             /* sr at time of interrupt */
 131         u_long  pc;             /* pc at time of interrupt */
 132         u_short vo;             /* vector offset (4-word frame) */
 133 };
 134
 135 #define CLKF_USERMODE(framep)   (((framep)->sr & PSL_S) == 0)
 136 #define CLKF_PC(framep)         ((framep)->pc)
 137 #if 0
 138 /* We would like to do it this way... */
 139 #define CLKF_INTR(framep)       (((framep)->sr & PSL_M) == 0)
 140 #else
 141 /* but until we start using PSL_M, we have to do this instead */
 142 #include <machine/intr.h>
 143 #define CLKF_INTR(framep)       (idepth > 1)    /* 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 hp300, 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/hp300spu.h>,
 181  * although some of it could probably be put into generic 68k headers.
 182  */
 183
 184 #ifdef _KERNEL
 185 extern  uint8_t *intiobase, *intiolimit, *extiobase;
 186 extern  void (*vectab[])(void);
 187
 188 struct fpframe;
 189
 190 /* locore.s functions */
 191 void    m68881_save(struct fpframe *);
 192 void    m68881_restore(struct fpframe *);
 193 int     suline(void *, void *);
 194 void    loadustp(int);
 195
 196 void    doboot(void) __attribute__((__noreturn__));
 197 void    ecacheon(void);
 198 void    ecacheoff(void);
 199
 200 /* clock.c functions */
 201 void    hp300_calibrate_delay(void);
 202
 203 /* machdep.c functions */
 204 int     badaddr(void *);
 205 int     badbaddr(void *);
 206
 207 /* what is this supposed to do? i.e. how is it different than startrtclock? */
 208 #define enablertclock()
 209
 210 #endif
 211
 212 /* physical memory sections */
 213 #define ROMBASE         (0x00000000)
 214 #define INTIOBASE       (0x00400000)
 215 #define INTIOTOP        (0x00600000)
 216 #define EXTIOBASE       (0x00600000)
 217 #define EXTIOTOP        (0x20000000)
 218 #define MAXADDR         (0 - NBPG)
 219
 220 /*
 221  * Internal IO space:
 222  *
 223  * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE).
 224  *
 225  * Internal IO space is mapped in the kernel from ``intiobase'' to
 226  * ``intiolimit'' (defined in locore.s).  Since it is always mapped,
 227  * conversion between physical and kernel virtual addresses is easy.
 228  */
 229 #define ISIIOVA(va) \
 230         ((uint8_t *)(va) >= intiobase && (uint8_t *)(va) < intiolimit)
 231 #define IIOV(pa)        ((paddr_t)(pa)-INTIOBASE+(vaddr_t)intiobase)
 232 #define IIOP(va)        ((vaddr_t)(va)-(vaddr_t)intiobase+INTIOBASE)
 233 #define IIOPOFF(pa)     ((paddr_t)(pa)-INTIOBASE)
 234 #define IIOMAPSIZE      btoc(INTIOTOP-INTIOBASE)        /* 2mb */
 235
 236 /*
 237  * External IO space:
 238  *
 239  * DIO ranges from select codes 0-63 at physical addresses given by:
 240  *      0x600000 + (sc - 32) * 0x10000
 241  * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for
 242  * their control space and the remaining areas, [0x200000-0x400000) and
 243  * [0x800000-0x1000000), are for additional space required by a card;
 244  * e.g. a display framebuffer.
 245  *
 246  * DIO-II ranges from select codes 132-255 at physical addresses given by:
 247  *      0x1000000 + (sc - 132) * 0x400000
 248  * The address range of DIO-II space is thus [0x1000000-0x20000000).
 249  *
 250  * DIO/DIO-II space is too large to map in its entirety, instead devices
 251  * are mapped into kernel virtual address space allocated from a range
 252  * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''.
 253  */
 254 #define DIOBASE         (0x600000)
 255 #define DIOTOP          (0x1000000)
 256 #define DIOCSIZE        (0x10000)
 257 #define DIOIIBASE       (0x01000000)
 258 #define DIOIITOP        (0x20000000)
 259 #define DIOIICSIZE      (0x00400000)
 260
 261 /*
 262  * HP MMU
 263  */
 264 #define MMUBASE         IIOPOFF(0x5F4000)
 265 #define MMUSSTP         0x0
 266 #define MMUUSTP         0x4
 267 #define MMUTBINVAL      0x8
 268 #define MMUSTAT         0xC
 269 #define MMUCMD          MMUSTAT
 270
 271 #define MMU_UMEN        0x0001  /* enable user mapping */
 272 #define MMU_SMEN        0x0002  /* enable supervisor mapping */
 273 #define MMU_CEN         0x0004  /* enable data cache */
 274 #define MMU_BERR        0x0008  /* bus error */
 275 #define MMU_IEN         0x0020  /* enable instruction cache */
 276 #define MMU_FPE         0x0040  /* enable 68881 FP coprocessor */
 277 #define MMU_WPF         0x2000  /* write protect fault */
 278 #define MMU_PF          0x4000  /* page fault */
 279 #define MMU_PTF         0x8000  /* page table fault */
 280
 281 #define MMU_FAULT       (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR)
 282 #define MMU_ENAB        (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE)
 283
 284 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC)
 285 #define M68K_CACHEOPS_MACHDEP
 286 #endif
 287
 288 #ifdef CACHE_HAVE_PAC
 289 #define M68K_CACHEOPS_MACHDEP_PCIA
 290 #endif
 291
 292 #ifdef CACHE_HAVE_VAC
 293 #define M68K_CACHEOPS_MACHDEP_DCIA
 294 #define M68K_CACHEOPS_MACHDEP_DCIS
 295 #define M68K_CACHEOPS_MACHDEP_DCIU
 296 #define M68K_CACHEOPS_MACHDEP_TBIA
 297 #define M68K_CACHEOPS_MACHDEP_TBIS
 298 #define M68K_CACHEOPS_MACHDEP_TBIAS
 299 #define M68K_CACHEOPS_MACHDEP_TBIAU
 300 #endif
 301
 302 #endif /* _HP300_CPU_H_ */