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cpu.h revision 1.37 
      1 /*	$NetBSD: cpu.h,v 1.37 2001/05/30 12:28:40 mrg Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1982, 1990 The Regents of the University of California.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * the Systems Programming Group of the University of Utah Computer
     10  * Science Department.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *	This product includes software developed by the University of
     23  *	California, Berkeley and its contributors.
     24  * 4. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  * from: Utah $Hdr: cpu.h 1.16 91/03/25$
     41  *
     42  *	@(#)cpu.h	7.7 (Berkeley) 6/27/91
     43  */
     44 
     45 #ifndef _MACHINE_CPU_H_
     46 #define _MACHINE_CPU_H_
     47 
     48 /*
     49  * Exported definitions unique to atari/68k cpu support.
     50  */
     51 
     52 #if defined(_KERNEL_OPT)
     53 #include "opt_lockdebug.h"
     54 #endif
     55 
     56 /*
     57  * Get common m68k CPU definitions.
     58  */
     59 #include <m68k/cpu.h>
     60 #define	M68K_MMU_MOTOROLA
     61 
     62 #include <sys/sched.h>
     63 struct cpu_info {
     64 	struct schedstate_percpu ci_schedstate; /* scheduler state */
     65 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
     66 	u_long ci_spin_locks;		/* # of spin locks held */
     67 	u_long ci_simple_locks;		/* # of simple locks held */
     68 #endif
     69 };
     70 
     71 #ifdef _KERNEL
     72 extern struct cpu_info cpu_info_store;
     73 
     74 #define	curcpu()	(&cpu_info_store)
     75 
     76 /*
     77  * definitions of cpu-dependent requirements
     78  * referenced in generic code
     79  */
     80 #define	cpu_swapin(p)			/* nothing */
     81 #define	cpu_wait(p)			/* nothing */
     82 #define cpu_swapout(p)			/* nothing */
     83 #define	cpu_number()			0
     84 
     85 /*
     86  * Arguments to hardclock and gatherstats encapsulate the previous
     87  * machine state in an opaque clockframe.  On the hp300, we use
     88  * what the hardware pushes on an interrupt (frame format 0).
     89  */
     90 struct clockframe {
     91 	u_int	cf_regs[4];	/* d0,d1,a0,a1 (see locore.s)	*/
     92 	u_short	cf_sr;		/* sr at time of interrupt	*/
     93 	u_long	cf_pc;		/* pc at time of interrupt	*/
     94 	u_short	cf_vo;		/* vector offset (4-word frame)	*/
     95 };
     96 
     97 #define	CLKF_USERMODE(framep)	(((framep)->cf_sr & PSL_S) == 0)
     98 #define	CLKF_BASEPRI(framep)	(((framep)->cf_sr & PSL_IPL) == 0)
     99 #define	CLKF_PC(framep)		((framep)->cf_pc)
    100 #if 0
    101 /* We would like to do it this way... */
    102 #define	CLKF_INTR(framep)	(((framep)->cf_sr & PSL_M) == 0)
    103 #else
    104 /* but until we start using PSL_M, we have to do this instead */
    105 #define	CLKF_INTR(framep)	(0)	/* XXX */
    106 #endif
    107 
    108 
    109 /*
    110  * Preempt the current process if in interrupt from user mode,
    111  * or after the current trap/syscall if in system mode.
    112  */
    113 #define	need_resched(ci)	{want_resched = 1; setsoftast();}
    114 
    115 /*
    116  * Give a profiling tick to the current process from the softclock
    117  * interrupt.  On hp300, request an ast to send us through trap(),
    118  * marking the proc as needing a profiling tick.
    119  */
    120 #define	profile_tick(p, framep)	((p)->p_flag |= P_OWEUPC, setsoftast())
    121 #define	need_proftick(p)	((p)->p_flag |= P_OWEUPC, setsoftast())
    122 
    123 /*
    124  * Notify the current process (p) that it has a signal pending,
    125  * process as soon as possible.
    126  */
    127 #define	signotify(p)	setsoftast()
    128 
    129 #define setsoftast()	(astpending = 1)
    130 
    131 extern int	astpending;	/* need trap before returning to user mode */
    132 extern int	want_resched;	/* resched() was called */
    133 
    134 #endif /* _KERNEL */
    135 
    136 /* include support for software interrupts */
    137 #include <machine/mtpr.h>
    138 
    139 /*
    140  * The rest of this should probably be moved to ../atari/ataricpu.h,
    141  * although some of it could probably be put into generic 68k headers.
    142  */
    143 #define	BASEPRI(sr)	((sr & PSL_IPL) == 0)
    144 
    145 /*
    146  * Values for machineid.
    147  */
    148 #define	ATARI_68000	1		/* 68000 CPU			*/
    149 #define	ATARI_68010	(1<<1)		/* 68010 CPU			*/
    150 #define ATARI_68020	(1L<<2)		/* 68020 CPU			*/
    151 #define ATARI_68030	(1L<<3)		/* 68030 CPU			*/
    152 #define ATARI_68040	(1L<<4)		/* 68040 CPU			*/
    153 #define ATARI_68060	(1L<<6)		/* 68060 CPU			*/
    154 #define	ATARI_TT	(1L<<11)	/* This is a TT030		*/
    155 #define	ATARI_FALCON	(1L<<12)	/*           Falcon		*/
    156 #define	ATARI_HADES	(1L<<13)	/*           Hades		*/
    157 #define	ATARI_MILAN	(1L<<14)	/*           Milan		*/
    158 
    159 #define	ATARI_CLKBROKEN	(1L<<16)
    160 
    161 #define	ATARI_ANYCPU	(ATARI_68000|ATARI_68010|ATARI_68020|ATARI_68030 \
    162 			|ATARI_68040|ATARI_68060)
    163 
    164 #define	ATARI_ANYMACH	(ATARI_TT|ATARI_FALCON|ATARI_HADES|ATARI_MILAN)
    165 
    166 #ifdef _KERNEL
    167 extern int machineid;
    168 #endif
    169 
    170 /*
    171  * CTL_MACHDEP definitions.
    172  */
    173 #define CPU_CONSDEV	1	/* dev_t: console terminal device */
    174 #define CPU_MAXID	2	/* number of valid machdep ids */
    175 
    176 #define CTL_MACHDEP_NAMES { \
    177 	{ 0, 0 }, \
    178 	{ "console_device", CTLTYPE_STRUCT }, \
    179 }
    180 
    181 #ifdef _KERNEL
    182 /*
    183  * Prototypes from atari_init.c
    184  */
    185 int	cpu_dump __P((int (*)(dev_t, daddr_t, caddr_t, size_t), daddr_t *));
    186 int	cpu_dumpsize __P((void));
    187 
    188 /*
    189  * Prototypes from autoconf.c
    190  */
    191 void	config_console __P((void));
    192 
    193 /*
    194  * Prototypes from clock.c
    195  */
    196 long	clkread __P((void));
    197 
    198 /*
    199  * Prototypes from disksubr.c
    200  */
    201 struct buf;
    202 struct disklabel;
    203 int	bounds_check_with_label __P((struct buf *, struct disklabel *, int));
    204 
    205 /*
    206  * Prototypes from fpu.c
    207  */
    208 char	*fpu_describe __P((int));
    209 int	fpu_probe __P((void));
    210 
    211 /*
    212  * Prototypes from vm_machdep.c
    213  */
    214 int	badbaddr __P((caddr_t, int));
    215 void	consinit __P((void));
    216 void	dumpconf __P((void));
    217 paddr_t	kvtop __P((caddr_t));
    218 void	physaccess __P((caddr_t, caddr_t, int, int));
    219 void	physunaccess __P((caddr_t, int));
    220 void	setredzone __P((u_int *, caddr_t));
    221 
    222 /*
    223  * Prototypes from locore.s
    224  */
    225 struct fpframe;
    226 struct user;
    227 struct pcb;
    228 
    229 void	clearseg __P((paddr_t));
    230 void	doboot __P((void));
    231 void	loadustp __P((int));
    232 void	m68881_save __P((struct fpframe *));
    233 void	m68881_restore __P((struct fpframe *));
    234 void	physcopyseg __P((paddr_t, paddr_t));
    235 u_int	probeva __P((u_int, u_int));
    236 void	proc_trampoline __P((void));
    237 void	savectx __P((struct pcb *));
    238 int	suline __P((caddr_t, caddr_t));
    239 void	switch_exit __P((struct proc *));
    240 void	DCIAS __P((vaddr_t));
    241 void	DCIA __P((void));
    242 void	DCIS __P((void));
    243 void	DCIU __P((void));
    244 void	ICIA __P((void));
    245 void	ICPA __P((void));
    246 void	PCIA __P((void));
    247 void	TBIA __P((void));
    248 void	TBIS __P((vaddr_t));
    249 void	TBIAS __P((void));
    250 void	TBIAU __P((void));
    251 
    252 #if defined(M68040) || defined(M68060)
    253 void	DCFA __P((void));
    254 void	DCFP __P((paddr_t));
    255 void	DCFL __P((paddr_t));
    256 void	DCPL __P((paddr_t));
    257 void	DCPP __P((paddr_t));
    258 void	ICPL __P((paddr_t));
    259 void	ICPP __P((paddr_t));
    260 #endif
    261 
    262 /*
    263  * Prototypes from machdep.c:
    264  */
    265 typedef void (*si_farg)(void *, void *);	/* XXX */
    266 void	add_sicallback __P((si_farg, void *, void *));
    267 void	rem_sicallback __P((si_farg));
    268 void	cpu_startup __P((void));
    269 void	dumpsys __P((void));
    270 vaddr_t reserve_dumppages __P((vaddr_t));
    271 void	softint __P((void));
    272 
    273 
    274 /*
    275  * Prototypes from nvram.c:
    276  */
    277 struct uio;
    278 int	nvram_uio __P((struct uio *));
    279 
    280 /*
    281  * Prototypes from sys_machdep.c:
    282  */
    283 int	cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *));
    284 int	dma_cachectl __P((caddr_t, int));
    285 
    286 /*
    287  * Prototypes from pci_machdep.c
    288  */
    289 void init_pci_bus __P((void));
    290 
    291 #endif /* _KERNEL */
    292 #endif /* !_MACHINE_CPU_H_ */
    293