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cpu.h revision 1.33
      1  1.33      chs /*	$NetBSD: cpu.h,v 1.33 2005/01/18 07:12:16 chs Exp $	*/
      2   1.1      oki 
      3   1.1      oki /*
      4   1.1      oki  * Copyright (c) 1982, 1990, 1993
      5   1.1      oki  *	The Regents of the University of California.  All rights reserved.
      6  1.29      agc  *
      7  1.29      agc  * This code is derived from software contributed to Berkeley by
      8  1.29      agc  * the Systems Programming Group of the University of Utah Computer
      9  1.29      agc  * Science Department.
     10  1.29      agc  *
     11  1.29      agc  * Redistribution and use in source and binary forms, with or without
     12  1.29      agc  * modification, are permitted provided that the following conditions
     13  1.29      agc  * are met:
     14  1.29      agc  * 1. Redistributions of source code must retain the above copyright
     15  1.29      agc  *    notice, this list of conditions and the following disclaimer.
     16  1.29      agc  * 2. Redistributions in binary form must reproduce the above copyright
     17  1.29      agc  *    notice, this list of conditions and the following disclaimer in the
     18  1.29      agc  *    documentation and/or other materials provided with the distribution.
     19  1.29      agc  * 3. Neither the name of the University nor the names of its contributors
     20  1.29      agc  *    may be used to endorse or promote products derived from this software
     21  1.29      agc  *    without specific prior written permission.
     22  1.29      agc  *
     23  1.29      agc  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  1.29      agc  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  1.29      agc  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  1.29      agc  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  1.29      agc  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  1.29      agc  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  1.29      agc  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  1.29      agc  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  1.29      agc  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  1.29      agc  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  1.29      agc  * SUCH DAMAGE.
     34  1.29      agc  *
     35  1.29      agc  * from: Utah $Hdr: cpu.h 1.16 91/03/25$
     36  1.29      agc  *
     37  1.29      agc  *	@(#)cpu.h	8.4 (Berkeley) 1/5/94
     38  1.29      agc  */
     39  1.29      agc /*
     40  1.29      agc  * Copyright (c) 1988 University of Utah.
     41   1.1      oki  *
     42   1.1      oki  * This code is derived from software contributed to Berkeley by
     43   1.1      oki  * the Systems Programming Group of the University of Utah Computer
     44   1.1      oki  * Science Department.
     45   1.1      oki  *
     46   1.1      oki  * Redistribution and use in source and binary forms, with or without
     47   1.1      oki  * modification, are permitted provided that the following conditions
     48   1.1      oki  * are met:
     49   1.1      oki  * 1. Redistributions of source code must retain the above copyright
     50   1.1      oki  *    notice, this list of conditions and the following disclaimer.
     51   1.1      oki  * 2. Redistributions in binary form must reproduce the above copyright
     52   1.1      oki  *    notice, this list of conditions and the following disclaimer in the
     53   1.1      oki  *    documentation and/or other materials provided with the distribution.
     54   1.1      oki  * 3. All advertising materials mentioning features or use of this software
     55   1.1      oki  *    must display the following acknowledgement:
     56   1.1      oki  *	This product includes software developed by the University of
     57   1.1      oki  *	California, Berkeley and its contributors.
     58   1.1      oki  * 4. Neither the name of the University nor the names of its contributors
     59   1.1      oki  *    may be used to endorse or promote products derived from this software
     60   1.1      oki  *    without specific prior written permission.
     61   1.1      oki  *
     62   1.1      oki  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     63   1.1      oki  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     64   1.1      oki  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     65   1.1      oki  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     66   1.1      oki  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     67   1.1      oki  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     68   1.1      oki  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     69   1.1      oki  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     70   1.1      oki  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     71   1.1      oki  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     72   1.1      oki  * SUCH DAMAGE.
     73   1.1      oki  *
     74   1.1      oki  * from: Utah $Hdr: cpu.h 1.16 91/03/25$
     75   1.1      oki  *
     76   1.1      oki  *	@(#)cpu.h	8.4 (Berkeley) 1/5/94
     77   1.1      oki  */
     78   1.1      oki 
     79   1.1      oki #ifndef _X68K_CPU_H_
     80   1.1      oki #define	_X68K_CPU_H_
     81   1.1      oki 
     82  1.32     yamt #if defined(_KERNEL)
     83  1.32     yamt 
     84   1.1      oki /*
     85   1.1      oki  * Exported definitions unique to x68k/68k cpu support.
     86   1.1      oki  */
     87  1.21  minoura 
     88  1.26      mrg #if defined(_KERNEL_OPT)
     89  1.21  minoura #include "opt_m680x0.h"
     90  1.23  thorpej #include "opt_lockdebug.h"
     91  1.21  minoura #endif
     92   1.1      oki 
     93   1.1      oki /*
     94   1.3  thorpej  * Get common m68k CPU definitions.
     95   1.3  thorpej  */
     96   1.3  thorpej #include <m68k/cpu.h>
     97   1.3  thorpej #define	M68K_MMU_MOTOROLA
     98   1.3  thorpej 
     99   1.3  thorpej /*
    100  1.13  minoura  * Get interrupt glue.
    101  1.13  minoura  */
    102  1.13  minoura #include <machine/intr.h>
    103  1.13  minoura 
    104  1.31     yamt #include <sys/cpu_data.h>
    105  1.23  thorpej struct cpu_info {
    106  1.31     yamt 	struct cpu_data ci_data;	/* MI per-cpu data */
    107  1.23  thorpej };
    108  1.23  thorpej 
    109  1.23  thorpej extern struct cpu_info cpu_info_store;
    110  1.23  thorpej 
    111  1.23  thorpej #define	curcpu()			(&cpu_info_store)
    112  1.23  thorpej 
    113  1.13  minoura /*
    114   1.1      oki  * definitions of cpu-dependent requirements
    115   1.1      oki  * referenced in generic code
    116   1.1      oki  */
    117   1.1      oki #define	cpu_swapin(p)			/* nothing */
    118   1.1      oki #define	cpu_swapout(p)			/* nothing */
    119  1.19  thorpej #define	cpu_number()			0
    120   1.1      oki 
    121  1.28  thorpej void	cpu_proc_fork(struct proc *, struct proc *);
    122  1.28  thorpej 
    123   1.1      oki /*
    124   1.1      oki  * Arguments to hardclock and gatherstats encapsulate the previous
    125   1.1      oki  * machine state in an opaque clockframe.  One the x68k, we use
    126   1.1      oki  * what the hardware pushes on an interrupt (frame format 0).
    127   1.1      oki  */
    128   1.1      oki struct clockframe {
    129   1.1      oki 	u_short	sr;		/* sr at time of interrupt */
    130   1.1      oki 	u_long	pc;		/* pc at time of interrupt */
    131   1.1      oki 	u_short	vo;		/* vector offset (4-word frame) */
    132   1.1      oki };
    133   1.1      oki 
    134   1.1      oki #define	CLKF_USERMODE(framep)	(((framep)->sr & PSL_S) == 0)
    135   1.1      oki #define	CLKF_BASEPRI(framep)	(((framep)->sr & PSL_IPL) == 0)
    136   1.1      oki #define	CLKF_PC(framep)		((framep)->pc)
    137   1.1      oki #if 0
    138   1.1      oki /* We would like to do it this way... */
    139   1.1      oki #define	CLKF_INTR(framep)	(((framep)->sr & PSL_M) == 0)
    140   1.1      oki #else
    141   1.1      oki /* but until we start using PSL_M, we have to do this instead */
    142   1.1      oki #define	CLKF_INTR(framep)	(0)	/* XXX */
    143   1.1      oki #endif
    144   1.1      oki 
    145   1.1      oki 
    146   1.1      oki /*
    147   1.1      oki  * Preempt the current process if in interrupt from user mode,
    148   1.1      oki  * or after the current trap/syscall if in system mode.
    149   1.1      oki  */
    150   1.8   scottr extern int want_resched;	/* resched() was called */
    151  1.24  thorpej #define	need_resched(ci)	{ want_resched++; aston(); }
    152   1.1      oki 
    153   1.1      oki /*
    154   1.1      oki  * Give a profiling tick to the current process when the user profiling
    155   1.1      oki  * buffer pages are invalid.  On the x68k, request an ast to send us
    156   1.1      oki  * through trap, marking the proc as needing a profiling tick.
    157   1.1      oki  */
    158   1.1      oki #define	need_proftick(p)	{ (p)->p_flag |= P_OWEUPC; aston(); }
    159   1.1      oki 
    160   1.1      oki /*
    161   1.1      oki  * Notify the current process (p) that it has a signal pending,
    162   1.1      oki  * process as soon as possible.
    163   1.1      oki  */
    164   1.1      oki #define	signotify(p)	aston()
    165   1.1      oki 
    166   1.8   scottr extern int astpending;		/* need to trap before returning to user mode */
    167   1.1      oki #define aston() (astpending++)
    168  1.23  thorpej 
    169  1.23  thorpej #endif /* _KERNEL */
    170   1.1      oki 
    171   1.1      oki /*
    172   1.1      oki  * CTL_MACHDEP definitions.
    173   1.1      oki  */
    174   1.1      oki #define	CPU_CONSDEV		1	/* dev_t: console terminal device */
    175   1.1      oki #define	CPU_MAXID		2	/* number of valid machdep ids */
    176   1.1      oki 
    177   1.1      oki #define CTL_MACHDEP_NAMES { \
    178   1.1      oki 	{ 0, 0 }, \
    179   1.1      oki 	{ "console_device", CTLTYPE_STRUCT }, \
    180   1.1      oki }
    181   1.1      oki 
    182   1.1      oki /*
    183  1.13  minoura  * The rest of this should probably be moved to <machine/x68kcpu.h>
    184   1.1      oki  * although some of it could probably be put into generic 68k headers.
    185   1.1      oki  */
    186   1.1      oki 
    187   1.1      oki #ifdef _KERNEL
    188   1.3  thorpej extern int machineid;
    189   1.1      oki extern char *intiolimit;
    190   1.2      oki 
    191   1.6      oki /* autoconf.c functions */
    192  1.33      chs void	config_console(void);
    193   1.4      oki 
    194   1.6      oki /* fpu.c functions */
    195  1.33      chs int	fpu_probe(void);
    196   1.2      oki 
    197   1.6      oki /* machdep.c functions */
    198  1.33      chs void	dumpconf(void);
    199  1.33      chs void	dumpsys(void);
    200   1.2      oki 
    201   1.6      oki /* locore.s functions */
    202   1.2      oki struct pcb;
    203   1.2      oki struct fpframe;
    204  1.33      chs int	suline(caddr_t, caddr_t);
    205  1.33      chs void	savectx(struct pcb *);
    206  1.33      chs void	switch_exit(struct lwp *);
    207  1.33      chs void	switch_lwp_exit(struct lwp *);
    208  1.33      chs void	proc_trampoline(void);
    209  1.33      chs void	loadustp(int);
    210  1.33      chs void	m68881_save(struct fpframe *);
    211  1.33      chs void	m68881_restore(struct fpframe *);
    212  1.17  minoura 
    213  1.17  minoura /* machdep.c functions */
    214  1.33      chs int	badaddr(caddr_t);
    215  1.33      chs int	badbaddr(caddr_t);
    216   1.2      oki 
    217   1.6      oki /* sys_machdep.c functions */
    218  1.33      chs int	cachectl1(unsigned long, vaddr_t, size_t, struct proc *);
    219  1.33      chs int	dma_cachectl(caddr_t, int);
    220   1.2      oki 
    221   1.6      oki /* vm_machdep.c functions */
    222  1.33      chs void	physaccess(caddr_t, caddr_t, int, int);
    223  1.33      chs void	physunaccess(caddr_t, int);
    224  1.33      chs int	kvtop(caddr_t);
    225   1.2      oki 
    226   1.1      oki #endif
    227   1.1      oki 
    228   1.1      oki /* physical memory sections */
    229   1.1      oki #define INTIOBASE	(0x00C00000)
    230   1.1      oki #define INTIOTOP	(0x01000000)
    231   1.1      oki 
    232   1.1      oki /*
    233   1.1      oki  * Internal IO space:
    234   1.1      oki  *
    235   1.1      oki  * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE).
    236   1.1      oki  *
    237   1.1      oki  * Internal IO space is mapped in the kernel from ``IODEVbase'' to
    238   1.1      oki  * ``intiolimit'' (defined in locore.s).  Since it is always mapped,
    239   1.1      oki  * conversion between physical and kernel virtual addresses is easy.
    240   1.1      oki  */
    241   1.1      oki #define	IIOPOFF(pa)	((int)(pa)-INTIOBASE)
    242   1.1      oki #define	IIOMAPSIZE	btoc(INTIOTOP-INTIOBASE)	/* 4mb */
    243   1.1      oki 
    244   1.1      oki #endif /* _X68K_CPU_H_ */
    245