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cpu.h revision 1.52
      1 /*	$NetBSD: cpu.h,v 1.52 1997/10/20 08:14:01 scottr 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 
     41 /*
     42  *	Copyright (c) 1992, 1993 BCDL Labs.  All rights reserved.
     43  *	Allen Briggs, Chris Caputo, Michael Finch, Brad Grantham, Lawrence Kesteloot
     44 
     45  *	Redistribution of this source code or any part thereof is permitted,
     46  *	 provided that the following conditions are met:
     47  *	1) Utilized source contains the copyright message above, this list
     48  *	 of conditions, and the following disclaimer.
     49  *	2) Binary objects containing compiled source reproduce the
     50  *	 copyright notice above on startup.
     51  *
     52  *	CAVEAT: This source code is provided "as-is" by BCDL Labs, and any
     53  *	 warranties of ANY kind are disclaimed.  We don't even claim that it
     54  *	 won't crash your hard disk.  Basically, we want a little credit if
     55  *	 it works, but we don't want to get mail-bombed if it doesn't.
     56  */
     57 
     58 /*
     59  * from: Utah $Hdr: cpu.h 1.16 91/03/25$
     60  *
     61  *	@(#)cpu.h	7.7 (Berkeley) 6/27/91
     62  */
     63 
     64 #ifndef _CPU_MACHINE_
     65 #define _CPU_MACHINE_
     66 
     67 /*
     68  * Exported definitions unique to mac68k/68k cpu support.
     69  */
     70 
     71 /*
     72  * Get common m68k definitions.
     73  */
     74 #include <m68k/cpu.h>
     75 #define	M68K_MMU_MOTOROLA
     76 
     77 /*
     78  * Get interrupt glue.
     79  */
     80 #include <machine/intr.h>
     81 
     82 /*
     83  * definitions of cpu-dependent requirements
     84  * referenced in generic code
     85  */
     86 #define	cpu_swapin(p)			/* nothing */
     87 #define	cpu_wait(p)			/* nothing */
     88 #define	cpu_swapout(p)			/* nothing */
     89 
     90 /*
     91  * Arguments to hardclock and gatherstats encapsulate the previous
     92  * machine state in an opaque clockframe.  One the hp300, we use
     93  * what the hardware pushes on an interrupt (frame format 0).
     94  */
     95 struct clockframe {
     96 	u_short	sr;		/* sr at time of interrupt */
     97 	u_long	pc;		/* pc at time of interrupt */
     98 	u_short	vo;		/* vector offset (4-word frame) */
     99 };
    100 
    101 #define	CLKF_USERMODE(framep)	(((framep)->sr & PSL_S) == 0)
    102 #define	CLKF_BASEPRI(framep)	(((framep)->sr & PSL_IPL) == 0)
    103 #define	CLKF_PC(framep)		((framep)->pc)
    104 #define	CLKF_INTR(framep)	(0) /* XXX should use PSL_M (see hp300) */
    105 
    106 /*
    107  * Preempt the current process if in interrupt from user mode,
    108  * or after the current trap/syscall if in system mode.
    109  */
    110 #define	need_resched()	{ want_resched++; aston(); }
    111 
    112 /*
    113  * Give a profiling tick to the current process from the softclock
    114  * interrupt.  Request an ast to send us through trap(),
    115  * marking the proc as needing a profiling tick.
    116  */
    117 #define	need_proftick(p)	( (p)->p_flag |= P_OWEUPC, aston() )
    118 
    119 /*
    120  * Notify the current process (p) that it has a signal pending,
    121  * process as soon as possible.
    122  */
    123 #define	signotify(p)	aston()
    124 
    125 #define aston() (astpending++)
    126 
    127 int	astpending;	/* need to trap before returning to user mode */
    128 int	want_resched;	/* resched() was called */
    129 
    130 #define CPU_CONSDEV	1
    131 #define CPU_MAXID	2
    132 
    133 #define CTL_MACHDEP_NAMES { \
    134 	{ 0, 0 }, \
    135 	{ "console_device", CTLTYPE_STRUCT }, \
    136 }
    137 
    138 /* values for machineid --
    139  * 	These are equivalent to the MacOS Gestalt values. */
    140 #define MACH_MACII		6
    141 #define MACH_MACIIX		7
    142 #define MACH_MACIICX		8
    143 #define MACH_MACSE30		9
    144 #define MACH_MACIICI		11
    145 #define MACH_MACIIFX		13
    146 #define MACH_MACIISI		18
    147 #define MACH_MACQ900		20
    148 #define MACH_MACPB170		21
    149 #define MACH_MACQ700		22
    150 #define MACH_MACCLASSICII	23
    151 #define MACH_MACPB100		24
    152 #define MACH_MACPB140		25
    153 #define MACH_MACQ950		26
    154 #define MACH_MACLCIII		27
    155 #define MACH_MACPB210		29
    156 #define MACH_MACC650		30
    157 #define MACH_MACPB230		32
    158 #define MACH_MACPB180		33
    159 #define MACH_MACPB160		34
    160 #define MACH_MACQ800		35
    161 #define MACH_MACQ650		36
    162 #define MACH_MACLCII		37
    163 #define MACH_MACPB250		38
    164 #define MACH_MACIIVI		44
    165 #define MACH_MACP600		45
    166 #define MACH_MACIIVX		48
    167 #define MACH_MACCCLASSIC	49
    168 #define MACH_MACPB165C		50
    169 #define MACH_MACC610		52
    170 #define MACH_MACQ610		53
    171 #define MACH_MACPB145		54
    172 #define MACH_MACLC520		56
    173 #define MACH_MACC660AV		60
    174 #define MACH_MACP460		62
    175 #define MACH_MACPB180C		71
    176 #define	MACH_MACPB500		72
    177 #define MACH_MACPB270		77
    178 #define MACH_MACQ840AV		78
    179 #define MACH_MACP550		80
    180 #define MACH_MACCCLASSICII	83
    181 #define MACH_MACPB165		84
    182 #define MACH_MACTV		88
    183 #define MACH_MACLC475		89
    184 #define MACH_MACLC475_33	90
    185 #define MACH_MACLC575		92
    186 #define MACH_MACQ605		94
    187 #define MACH_MACQ605_33		95
    188 #define MACH_MACQ630		98
    189 #define MACH_MACPB280		102
    190 #define MACH_MACPB280C		103
    191 #define MACH_MACPB150		115
    192 
    193 /*
    194  * Machine classes.  These define subsets of the above machines.
    195  */
    196 #define MACH_CLASSH	0x0000	/* Hopeless cases... */
    197 #define MACH_CLASSII	0x0001	/* MacII class */
    198 #define MACH_CLASSIIci	0x0004	/* Have RBV, but no Egret */
    199 #define MACH_CLASSIIsi	0x0005	/* Similar to IIci -- Have Egret. */
    200 #define MACH_CLASSIIvx	0x0006	/* Similar to IIsi -- different via2 emul? */
    201 #define MACH_CLASSLC	0x0007	/* Low-Cost/Performa/Wal-Mart Macs. */
    202 #define MACH_CLASSPB	0x0008	/* Powerbooks.  Power management. */
    203 #define MACH_CLASSDUO	0x0009	/* Powerbooks Duos.  More integration/Docks. */
    204 #define MACH_CLASSIIfx	0x0080	/* The IIfx is in a class by itself. */
    205 #define MACH_CLASSQ	0x0100	/* non-A/V Centris/Quadras. */
    206 #define MACH_CLASSAV	0x0101	/* A/V Centris/Quadras. */
    207 #define MACH_CLASSQ2	0x0102	/* More Centris/Quadras, different sccA. */
    208 
    209 #define MACH_68020	0
    210 #define MACH_68030	1
    211 #define MACH_68040	2
    212 #define MACH_PENTIUM	3	/* 66 and 99 MHz versions *only* */
    213 
    214 #ifdef _KERNEL
    215 struct mac68k_machine_S {
    216 	int			cpu_model_index;
    217 	/*
    218 	 * Misc. info from booter.
    219 	 */
    220 	int			machineid;
    221 	int			mach_processor;
    222 	int			mach_memsize;
    223 	int			booter_version;
    224 	/*
    225 	 * Debugging flags.
    226 	 */
    227 	int			do_graybars;
    228 	int			serial_boot_echo;
    229 	int			serial_console;
    230 
    231 	int			zs_chip;	/* what type of chip we've got */
    232 	int			modem_flags;
    233 	int			modem_cts_clk;
    234 	int			modem_dcd_clk;
    235 	int			modem_d_speed;
    236 	int			print_flags;
    237 	int			print_cts_clk;
    238 	int			print_dcd_clk;
    239 	int			print_d_speed;
    240 	/*
    241 	 * Misc. hardware info.
    242 	 */
    243 	int			scsi80;		/* Has NCR 5380 */
    244 	int			scsi96;		/* Has NCR 53C96 */
    245 	int			scsi96_2;	/* Has 2nd 53C96 */
    246 	int			sonic;		/* Has SONIC e-net */
    247 };
    248 
    249 	/* What kind of model is this */
    250 struct cpu_model_info {
    251 	int	machineid;	/* MacOS Gestalt value. */
    252 	char	*model_major;	/* Make this distinction to save a few */
    253 	char	*model_minor;	/*      bytes--might be useful, too. */
    254 	int	class;		/* Rough class of machine. */
    255 	  /* forwarded romvec_s is defined in mac68k/macrom.h */
    256 	struct romvec_s *rom_vectors; /* Pointer to our known rom vectors */
    257 };
    258 extern struct cpu_model_info *current_mac_model;
    259 
    260 extern unsigned long		IOBase;		/* Base address of I/O */
    261 extern unsigned long		NuBusBase;	/* Base address of NuBus */
    262 
    263 extern  struct mac68k_machine_S	mac68k_machine;
    264 extern	unsigned long		load_addr;
    265 #endif /* _KERNEL */
    266 
    267 /* physical memory sections */
    268 #define	ROMBASE		(0x40800000)
    269 #define	ROMLEN		(0x00200000)		/* 2MB will work for all 68k */
    270 #define	ROMMAPSIZE	btoc(ROMLEN)		/* 32k of page tables.  */
    271 
    272 #define IIOMAPSIZE	btoc(0x00100000)	/* 1MB should be enough */
    273 
    274 /* XXX -- Need to do something about superspace.
    275  * Technically, NuBus superspace starts at 0x60000000, but no
    276  * known Macintosh has used any slot lower numbered than 9, and
    277  * the super space is defined as 0xS000 0000 through 0xSFFF FFFF
    278  * where S is the slot number--ranging from 0x9 - 0xE.
    279  */
    280 #define	NBSBASE		0x90000000
    281 #define	NBSTOP		0xF0000000
    282 #define NBBASE		0xF9000000	/* NUBUS space */
    283 #define NBTOP		0xFF000000	/* NUBUS space */
    284 #define NBMAPSIZE	btoc(NBTOP-NBBASE)	/* ~ 96 megs */
    285 #define NBMEMSIZE	0x01000000	/* 16 megs per card */
    286 #define NBROMOFFSET	0x00FF0000	/* Last 64K == ROM */
    287 
    288 #ifdef _KERNEL
    289 
    290 struct frame;
    291 struct fpframe;
    292 struct pcb;
    293 
    294 /* machdep.c */
    295 void	mac68k_set_bell_callback __P((int (*)(void *, int, int, int), void *));
    296 int	mac68k_ring_bell __P((int, int, int));
    297 u_int	get_mapping __P((void));
    298 
    299 /* locore.s */
    300 void	m68881_restore __P((struct fpframe *));
    301 void	m68881_save __P((struct fpframe *));
    302 u_int	getsfc __P((void));
    303 u_int	getdfc __P((void));
    304 void	TBIA __P((void));
    305 void	TBIAS __P((void));
    306 void	TBIS __P((vm_offset_t));
    307 void	DCFP __P((vm_offset_t));
    308 void	ICPP __P((vm_offset_t));
    309 void	DCIU __P((void));
    310 void	DCIS __P((void));
    311 void	ICIA __P((void));
    312 void	DCFL __P((vm_offset_t));
    313 int	suline __P((caddr_t, caddr_t));
    314 void	savectx __P((struct pcb *));
    315 void	proc_trampoline __P((void));
    316 
    317 /* vm_machdep.c */
    318 void	physaccess __P((caddr_t, caddr_t, register int, register int));
    319 void	physunaccess __P((caddr_t, register int));
    320 
    321 #endif
    322 
    323 #endif	/* _CPU_MACHINE_ */
    324