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cpu.h revision 1.44 
      1 /*	$NetBSD: cpu.h,v 1.44 2004/09/22 11:32:02 yamt Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1990 The Regents of the University of California.
      5  * 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	7.7 (Berkeley) 6/27/91
     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	7.7 (Berkeley) 6/27/91
     77  */
     78 
     79 #ifndef _MACHINE_CPU_H_
     80 #define _MACHINE_CPU_H_
     81 
     82 /*
     83  * Exported definitions unique to atari/68k cpu support.
     84  */
     85 
     86 #if defined(_KERNEL_OPT)
     87 #include "opt_lockdebug.h"
     88 #endif
     89 
     90 /*
     91  * Get common m68k CPU definitions.
     92  */
     93 #include <m68k/cpu.h>
     94 #define	M68K_MMU_MOTOROLA
     95 
     96 #include <sys/cpu_data.h>
     97 struct cpu_info {
     98 	struct cpu_data ci_data;	/* MI per-cpu data */
     99 };
    100 
    101 #ifdef _KERNEL
    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_swapin(p)			/* nothing */
    111 #define cpu_swapout(p)			/* nothing */
    112 #define	cpu_number()			0
    113 
    114 void	cpu_proc_fork(struct proc *, struct proc *);
    115 
    116 /*
    117  * Arguments to hardclock and gatherstats encapsulate the previous
    118  * machine state in an opaque clockframe.  On the hp300, we use
    119  * what the hardware pushes on an interrupt (frame format 0).
    120  */
    121 struct clockframe {
    122 	u_int	cf_regs[4];	/* d0,d1,a0,a1 (see locore.s)	*/
    123 	u_short	cf_sr;		/* sr at time of interrupt	*/
    124 	u_long	cf_pc;		/* pc at time of interrupt	*/
    125 	u_short	cf_vo;		/* vector offset (4-word frame)	*/
    126 } __attribute__((packed));
    127 
    128 #define	CLKF_USERMODE(framep)	(((framep)->cf_sr & PSL_S) == 0)
    129 #define	CLKF_BASEPRI(framep)	(((framep)->cf_sr & PSL_IPL) == 0)
    130 #define	CLKF_PC(framep)		((framep)->cf_pc)
    131 #if 0
    132 /* We would like to do it this way... */
    133 #define	CLKF_INTR(framep)	(((framep)->cf_sr & PSL_M) == 0)
    134 #else
    135 /* but until we start using PSL_M, we have to do this instead */
    136 #define	CLKF_INTR(framep)	(0)	/* XXX */
    137 #endif
    138 
    139 
    140 /*
    141  * Preempt the current process if in interrupt from user mode,
    142  * or after the current trap/syscall if in system mode.
    143  */
    144 #define	need_resched(ci)	{want_resched = 1; setsoftast();}
    145 
    146 /*
    147  * Give a profiling tick to the current process from the softclock
    148  * interrupt.  On hp300, request an ast to send us through trap(),
    149  * marking the proc as needing a profiling tick.
    150  */
    151 #define	profile_tick(p, framep)	((p)->p_flag |= P_OWEUPC, setsoftast())
    152 #define	need_proftick(p)	((p)->p_flag |= P_OWEUPC, setsoftast())
    153 
    154 /*
    155  * Notify the current process (p) that it has a signal pending,
    156  * process as soon as possible.
    157  */
    158 #define	signotify(p)	setsoftast()
    159 
    160 #define setsoftast()	(astpending = 1)
    161 
    162 extern int	astpending;	/* need trap before returning to user mode */
    163 extern int	want_resched;	/* resched() was called */
    164 
    165 #endif /* _KERNEL */
    166 
    167 /* include support for software interrupts */
    168 #include <machine/mtpr.h>
    169 
    170 /*
    171  * The rest of this should probably be moved to ../atari/ataricpu.h,
    172  * although some of it could probably be put into generic 68k headers.
    173  */
    174 #define	BASEPRI(sr)	((sr & PSL_IPL) == 0)
    175 
    176 /*
    177  * Values for machineid.
    178  */
    179 #define	ATARI_68000	1		/* 68000 CPU			*/
    180 #define	ATARI_68010	(1<<1)		/* 68010 CPU			*/
    181 #define ATARI_68020	(1L<<2)		/* 68020 CPU			*/
    182 #define ATARI_68030	(1L<<3)		/* 68030 CPU			*/
    183 #define ATARI_68040	(1L<<4)		/* 68040 CPU			*/
    184 #define ATARI_68060	(1L<<6)		/* 68060 CPU			*/
    185 #define	ATARI_TT	(1L<<11)	/* This is a TT030		*/
    186 #define	ATARI_FALCON	(1L<<12)	/*           Falcon		*/
    187 #define	ATARI_HADES	(1L<<13)	/*           Hades		*/
    188 #define	ATARI_MILAN	(1L<<14)	/*           Milan		*/
    189 
    190 #define	ATARI_CLKBROKEN	(1L<<16)
    191 
    192 #define	ATARI_ANYCPU	(ATARI_68000|ATARI_68010|ATARI_68020|ATARI_68030 \
    193 			|ATARI_68040|ATARI_68060)
    194 
    195 #define	ATARI_ANYMACH	(ATARI_TT|ATARI_FALCON|ATARI_HADES|ATARI_MILAN)
    196 
    197 #ifdef _KERNEL
    198 extern int machineid;
    199 #endif
    200 
    201 /*
    202  * CTL_MACHDEP definitions.
    203  */
    204 #define CPU_CONSDEV	1	/* dev_t: console terminal device */
    205 #define CPU_MAXID	2	/* number of valid machdep ids */
    206 
    207 #define CTL_MACHDEP_NAMES { \
    208 	{ 0, 0 }, \
    209 	{ "console_device", CTLTYPE_STRUCT }, \
    210 }
    211 
    212 #ifdef _KERNEL
    213 /*
    214  * Prototypes from atari_init.c
    215  */
    216 int	cpu_dump __P((int (*)(dev_t, daddr_t, caddr_t, size_t), daddr_t *));
    217 int	cpu_dumpsize __P((void));
    218 
    219 /*
    220  * Prototypes from autoconf.c
    221  */
    222 void	config_console __P((void));
    223 
    224 /*
    225  * Prototypes from clock.c
    226  */
    227 long	clkread __P((void));
    228 
    229 /*
    230  * Prototypes from fpu.c
    231  */
    232 char	*fpu_describe __P((int));
    233 int	fpu_probe __P((void));
    234 
    235 /*
    236  * Prototypes from vm_machdep.c
    237  */
    238 int	badbaddr __P((caddr_t, int));
    239 void	consinit __P((void));
    240 void	dumpconf __P((void));
    241 int	kvtop __P((caddr_t));
    242 void	physaccess __P((caddr_t, caddr_t, int, int));
    243 void	physunaccess __P((caddr_t, int));
    244 void	setredzone __P((u_int *, caddr_t));
    245 
    246 /*
    247  * Prototypes from locore.s
    248  */
    249 struct fpframe;
    250 struct user;
    251 struct pcb;
    252 
    253 void	clearseg __P((paddr_t));
    254 void	doboot __P((void));
    255 void	loadustp __P((int));
    256 void	m68881_save __P((struct fpframe *));
    257 void	m68881_restore __P((struct fpframe *));
    258 void	physcopyseg __P((paddr_t, paddr_t));
    259 u_int	probeva __P((u_int, u_int));
    260 void	proc_trampoline __P((void));
    261 void	savectx __P((struct pcb *));
    262 int	suline __P((caddr_t, caddr_t));
    263 void	switch_exit __P((struct lwp *));
    264 void	switch_lwp_exit __P((struct lwp *));
    265 
    266 /*
    267  * Prototypes from machdep.c:
    268  */
    269 typedef void (*si_farg)(void *, void *);	/* XXX */
    270 void	add_sicallback __P((si_farg, void *, void *));
    271 void	rem_sicallback __P((si_farg));
    272 void	cpu_startup __P((void));
    273 void	dumpsys __P((void));
    274 vaddr_t reserve_dumppages __P((vaddr_t));
    275 void	softint __P((void));
    276 
    277 
    278 /*
    279  * Prototypes from nvram.c:
    280  */
    281 struct uio;
    282 int	nvram_uio __P((struct uio *));
    283 
    284 /*
    285  * Prototypes from sys_machdep.c:
    286  */
    287 int	cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *));
    288 int	dma_cachectl __P((caddr_t, int));
    289 
    290 /*
    291  * Prototypes from pci_machdep.c
    292  */
    293 void init_pci_bus __P((void));
    294 
    295 #endif /* _KERNEL */
    296 #endif /* !_MACHINE_CPU_H_ */
    297