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cpu.h revision 1.40 
      1 /*	$NetBSD: cpu.h,v 1.40 2003/01/17 22:34:22 thorpej 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 void	cpu_proc_fork(struct proc *, struct proc *);
     86 
     87 /*
     88  * Arguments to hardclock and gatherstats encapsulate the previous
     89  * machine state in an opaque clockframe.  On the hp300, we use
     90  * what the hardware pushes on an interrupt (frame format 0).
     91  */
     92 struct clockframe {
     93 	u_int	cf_regs[4];	/* d0,d1,a0,a1 (see locore.s)	*/
     94 	u_short	cf_sr;		/* sr at time of interrupt	*/
     95 	u_long	cf_pc;		/* pc at time of interrupt	*/
     96 	u_short	cf_vo;		/* vector offset (4-word frame)	*/
     97 } __attribute__((packed));
     98 
     99 #define	CLKF_USERMODE(framep)	(((framep)->cf_sr & PSL_S) == 0)
    100 #define	CLKF_BASEPRI(framep)	(((framep)->cf_sr & PSL_IPL) == 0)
    101 #define	CLKF_PC(framep)		((framep)->cf_pc)
    102 #if 0
    103 /* We would like to do it this way... */
    104 #define	CLKF_INTR(framep)	(((framep)->cf_sr & PSL_M) == 0)
    105 #else
    106 /* but until we start using PSL_M, we have to do this instead */
    107 #define	CLKF_INTR(framep)	(0)	/* XXX */
    108 #endif
    109 
    110 
    111 /*
    112  * Preempt the current process if in interrupt from user mode,
    113  * or after the current trap/syscall if in system mode.
    114  */
    115 #define	need_resched(ci)	{want_resched = 1; setsoftast();}
    116 
    117 /*
    118  * Give a profiling tick to the current process from the softclock
    119  * interrupt.  On hp300, request an ast to send us through trap(),
    120  * marking the proc as needing a profiling tick.
    121  */
    122 #define	profile_tick(p, framep)	((p)->p_flag |= P_OWEUPC, setsoftast())
    123 #define	need_proftick(p)	((p)->p_flag |= P_OWEUPC, setsoftast())
    124 
    125 /*
    126  * Notify the current process (p) that it has a signal pending,
    127  * process as soon as possible.
    128  */
    129 #define	signotify(p)	setsoftast()
    130 
    131 #define setsoftast()	(astpending = 1)
    132 
    133 extern int	astpending;	/* need trap before returning to user mode */
    134 extern int	want_resched;	/* resched() was called */
    135 
    136 #endif /* _KERNEL */
    137 
    138 /* include support for software interrupts */
    139 #include <machine/mtpr.h>
    140 
    141 /*
    142  * The rest of this should probably be moved to ../atari/ataricpu.h,
    143  * although some of it could probably be put into generic 68k headers.
    144  */
    145 #define	BASEPRI(sr)	((sr & PSL_IPL) == 0)
    146 
    147 /*
    148  * Values for machineid.
    149  */
    150 #define	ATARI_68000	1		/* 68000 CPU			*/
    151 #define	ATARI_68010	(1<<1)		/* 68010 CPU			*/
    152 #define ATARI_68020	(1L<<2)		/* 68020 CPU			*/
    153 #define ATARI_68030	(1L<<3)		/* 68030 CPU			*/
    154 #define ATARI_68040	(1L<<4)		/* 68040 CPU			*/
    155 #define ATARI_68060	(1L<<6)		/* 68060 CPU			*/
    156 #define	ATARI_TT	(1L<<11)	/* This is a TT030		*/
    157 #define	ATARI_FALCON	(1L<<12)	/*           Falcon		*/
    158 #define	ATARI_HADES	(1L<<13)	/*           Hades		*/
    159 #define	ATARI_MILAN	(1L<<14)	/*           Milan		*/
    160 
    161 #define	ATARI_CLKBROKEN	(1L<<16)
    162 
    163 #define	ATARI_ANYCPU	(ATARI_68000|ATARI_68010|ATARI_68020|ATARI_68030 \
    164 			|ATARI_68040|ATARI_68060)
    165 
    166 #define	ATARI_ANYMACH	(ATARI_TT|ATARI_FALCON|ATARI_HADES|ATARI_MILAN)
    167 
    168 #ifdef _KERNEL
    169 extern int machineid;
    170 #endif
    171 
    172 /*
    173  * CTL_MACHDEP definitions.
    174  */
    175 #define CPU_CONSDEV	1	/* dev_t: console terminal device */
    176 #define CPU_MAXID	2	/* number of valid machdep ids */
    177 
    178 #define CTL_MACHDEP_NAMES { \
    179 	{ 0, 0 }, \
    180 	{ "console_device", CTLTYPE_STRUCT }, \
    181 }
    182 
    183 #ifdef _KERNEL
    184 /*
    185  * Prototypes from atari_init.c
    186  */
    187 int	cpu_dump __P((int (*)(dev_t, daddr_t, caddr_t, size_t), daddr_t *));
    188 int	cpu_dumpsize __P((void));
    189 
    190 /*
    191  * Prototypes from autoconf.c
    192  */
    193 void	config_console __P((void));
    194 
    195 /*
    196  * Prototypes from clock.c
    197  */
    198 long	clkread __P((void));
    199 
    200 /*
    201  * Prototypes from disksubr.c
    202  */
    203 struct buf;
    204 struct disklabel;
    205 int	bounds_check_with_label __P((struct buf *, struct disklabel *, int));
    206 
    207 /*
    208  * Prototypes from fpu.c
    209  */
    210 char	*fpu_describe __P((int));
    211 int	fpu_probe __P((void));
    212 
    213 /*
    214  * Prototypes from vm_machdep.c
    215  */
    216 int	badbaddr __P((caddr_t, int));
    217 void	consinit __P((void));
    218 void	dumpconf __P((void));
    219 int	kvtop __P((caddr_t));
    220 void	physaccess __P((caddr_t, caddr_t, int, int));
    221 void	physunaccess __P((caddr_t, int));
    222 void	setredzone __P((u_int *, caddr_t));
    223 
    224 /*
    225  * Prototypes from locore.s
    226  */
    227 struct fpframe;
    228 struct user;
    229 struct pcb;
    230 
    231 void	clearseg __P((paddr_t));
    232 void	doboot __P((void));
    233 void	loadustp __P((int));
    234 void	m68881_save __P((struct fpframe *));
    235 void	m68881_restore __P((struct fpframe *));
    236 void	physcopyseg __P((paddr_t, paddr_t));
    237 u_int	probeva __P((u_int, u_int));
    238 void	proc_trampoline __P((void));
    239 void	savectx __P((struct pcb *));
    240 int	suline __P((caddr_t, caddr_t));
    241 void	switch_exit __P((struct lwp *));
    242 void	switch_lwp_exit __P((struct lwp *));
    243 
    244 /*
    245  * Prototypes from machdep.c:
    246  */
    247 typedef void (*si_farg)(void *, void *);	/* XXX */
    248 void	add_sicallback __P((si_farg, void *, void *));
    249 void	rem_sicallback __P((si_farg));
    250 void	cpu_startup __P((void));
    251 void	dumpsys __P((void));
    252 vaddr_t reserve_dumppages __P((vaddr_t));
    253 void	softint __P((void));
    254 
    255 
    256 /*
    257  * Prototypes from nvram.c:
    258  */
    259 struct uio;
    260 int	nvram_uio __P((struct uio *));
    261 
    262 /*
    263  * Prototypes from sys_machdep.c:
    264  */
    265 int	cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *));
    266 int	dma_cachectl __P((caddr_t, int));
    267 
    268 /*
    269  * Prototypes from pci_machdep.c
    270  */
    271 void init_pci_bus __P((void));
    272 
    273 #endif /* _KERNEL */
    274 #endif /* !_MACHINE_CPU_H_ */
    275