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cpu.h revision 1.42 
      1 /*	$NetBSD: cpu.h,v 1.42 2003/08/07 16:27:03 agc 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/sched.h>
     97 struct cpu_info {
     98 	struct schedstate_percpu ci_schedstate; /* scheduler state */
     99 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
    100 	u_long ci_spin_locks;		/* # of spin locks held */
    101 	u_long ci_simple_locks;		/* # of simple locks held */
    102 #endif
    103 };
    104 
    105 #ifdef _KERNEL
    106 extern struct cpu_info cpu_info_store;
    107 
    108 #define	curcpu()	(&cpu_info_store)
    109 
    110 /*
    111  * definitions of cpu-dependent requirements
    112  * referenced in generic code
    113  */
    114 #define	cpu_swapin(p)			/* nothing */
    115 #define	cpu_wait(p)			/* nothing */
    116 #define cpu_swapout(p)			/* nothing */
    117 #define	cpu_number()			0
    118 
    119 void	cpu_proc_fork(struct proc *, struct proc *);
    120 
    121 /*
    122  * Arguments to hardclock and gatherstats encapsulate the previous
    123  * machine state in an opaque clockframe.  On the hp300, we use
    124  * what the hardware pushes on an interrupt (frame format 0).
    125  */
    126 struct clockframe {
    127 	u_int	cf_regs[4];	/* d0,d1,a0,a1 (see locore.s)	*/
    128 	u_short	cf_sr;		/* sr at time of interrupt	*/
    129 	u_long	cf_pc;		/* pc at time of interrupt	*/
    130 	u_short	cf_vo;		/* vector offset (4-word frame)	*/
    131 } __attribute__((packed));
    132 
    133 #define	CLKF_USERMODE(framep)	(((framep)->cf_sr & PSL_S) == 0)
    134 #define	CLKF_BASEPRI(framep)	(((framep)->cf_sr & PSL_IPL) == 0)
    135 #define	CLKF_PC(framep)		((framep)->cf_pc)
    136 #if 0
    137 /* We would like to do it this way... */
    138 #define	CLKF_INTR(framep)	(((framep)->cf_sr & PSL_M) == 0)
    139 #else
    140 /* but until we start using PSL_M, we have to do this instead */
    141 #define	CLKF_INTR(framep)	(0)	/* XXX */
    142 #endif
    143 
    144 
    145 /*
    146  * Preempt the current process if in interrupt from user mode,
    147  * or after the current trap/syscall if in system mode.
    148  */
    149 #define	need_resched(ci)	{want_resched = 1; setsoftast();}
    150 
    151 /*
    152  * Give a profiling tick to the current process from the softclock
    153  * interrupt.  On hp300, request an ast to send us through trap(),
    154  * marking the proc as needing a profiling tick.
    155  */
    156 #define	profile_tick(p, framep)	((p)->p_flag |= P_OWEUPC, setsoftast())
    157 #define	need_proftick(p)	((p)->p_flag |= P_OWEUPC, setsoftast())
    158 
    159 /*
    160  * Notify the current process (p) that it has a signal pending,
    161  * process as soon as possible.
    162  */
    163 #define	signotify(p)	setsoftast()
    164 
    165 #define setsoftast()	(astpending = 1)
    166 
    167 extern int	astpending;	/* need trap before returning to user mode */
    168 extern int	want_resched;	/* resched() was called */
    169 
    170 #endif /* _KERNEL */
    171 
    172 /* include support for software interrupts */
    173 #include <machine/mtpr.h>
    174 
    175 /*
    176  * The rest of this should probably be moved to ../atari/ataricpu.h,
    177  * although some of it could probably be put into generic 68k headers.
    178  */
    179 #define	BASEPRI(sr)	((sr & PSL_IPL) == 0)
    180 
    181 /*
    182  * Values for machineid.
    183  */
    184 #define	ATARI_68000	1		/* 68000 CPU			*/
    185 #define	ATARI_68010	(1<<1)		/* 68010 CPU			*/
    186 #define ATARI_68020	(1L<<2)		/* 68020 CPU			*/
    187 #define ATARI_68030	(1L<<3)		/* 68030 CPU			*/
    188 #define ATARI_68040	(1L<<4)		/* 68040 CPU			*/
    189 #define ATARI_68060	(1L<<6)		/* 68060 CPU			*/
    190 #define	ATARI_TT	(1L<<11)	/* This is a TT030		*/
    191 #define	ATARI_FALCON	(1L<<12)	/*           Falcon		*/
    192 #define	ATARI_HADES	(1L<<13)	/*           Hades		*/
    193 #define	ATARI_MILAN	(1L<<14)	/*           Milan		*/
    194 
    195 #define	ATARI_CLKBROKEN	(1L<<16)
    196 
    197 #define	ATARI_ANYCPU	(ATARI_68000|ATARI_68010|ATARI_68020|ATARI_68030 \
    198 			|ATARI_68040|ATARI_68060)
    199 
    200 #define	ATARI_ANYMACH	(ATARI_TT|ATARI_FALCON|ATARI_HADES|ATARI_MILAN)
    201 
    202 #ifdef _KERNEL
    203 extern int machineid;
    204 #endif
    205 
    206 /*
    207  * CTL_MACHDEP definitions.
    208  */
    209 #define CPU_CONSDEV	1	/* dev_t: console terminal device */
    210 #define CPU_MAXID	2	/* number of valid machdep ids */
    211 
    212 #define CTL_MACHDEP_NAMES { \
    213 	{ 0, 0 }, \
    214 	{ "console_device", CTLTYPE_STRUCT }, \
    215 }
    216 
    217 #ifdef _KERNEL
    218 /*
    219  * Prototypes from atari_init.c
    220  */
    221 int	cpu_dump __P((int (*)(dev_t, daddr_t, caddr_t, size_t), daddr_t *));
    222 int	cpu_dumpsize __P((void));
    223 
    224 /*
    225  * Prototypes from autoconf.c
    226  */
    227 void	config_console __P((void));
    228 
    229 /*
    230  * Prototypes from clock.c
    231  */
    232 long	clkread __P((void));
    233 
    234 /*
    235  * Prototypes from fpu.c
    236  */
    237 char	*fpu_describe __P((int));
    238 int	fpu_probe __P((void));
    239 
    240 /*
    241  * Prototypes from vm_machdep.c
    242  */
    243 int	badbaddr __P((caddr_t, int));
    244 void	consinit __P((void));
    245 void	dumpconf __P((void));
    246 int	kvtop __P((caddr_t));
    247 void	physaccess __P((caddr_t, caddr_t, int, int));
    248 void	physunaccess __P((caddr_t, int));
    249 void	setredzone __P((u_int *, caddr_t));
    250 
    251 /*
    252  * Prototypes from locore.s
    253  */
    254 struct fpframe;
    255 struct user;
    256 struct pcb;
    257 
    258 void	clearseg __P((paddr_t));
    259 void	doboot __P((void));
    260 void	loadustp __P((int));
    261 void	m68881_save __P((struct fpframe *));
    262 void	m68881_restore __P((struct fpframe *));
    263 void	physcopyseg __P((paddr_t, paddr_t));
    264 u_int	probeva __P((u_int, u_int));
    265 void	proc_trampoline __P((void));
    266 void	savectx __P((struct pcb *));
    267 int	suline __P((caddr_t, caddr_t));
    268 void	switch_exit __P((struct lwp *));
    269 void	switch_lwp_exit __P((struct lwp *));
    270 
    271 /*
    272  * Prototypes from machdep.c:
    273  */
    274 typedef void (*si_farg)(void *, void *);	/* XXX */
    275 void	add_sicallback __P((si_farg, void *, void *));
    276 void	rem_sicallback __P((si_farg));
    277 void	cpu_startup __P((void));
    278 void	dumpsys __P((void));
    279 vaddr_t reserve_dumppages __P((vaddr_t));
    280 void	softint __P((void));
    281 
    282 
    283 /*
    284  * Prototypes from nvram.c:
    285  */
    286 struct uio;
    287 int	nvram_uio __P((struct uio *));
    288 
    289 /*
    290  * Prototypes from sys_machdep.c:
    291  */
    292 int	cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *));
    293 int	dma_cachectl __P((caddr_t, int));
    294 
    295 /*
    296  * Prototypes from pci_machdep.c
    297  */
    298 void init_pci_bus __P((void));
    299 
    300 #endif /* _KERNEL */
    301 #endif /* !_MACHINE_CPU_H_ */
    302