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cpu.h revision 1.64 
      1 /*	$NetBSD: cpu.h,v 1.64 2010/12/25 15:05:22 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1990, 1993
      5  *	The Regents of the University of California.  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	8.4 (Berkeley) 1/5/94
     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	8.4 (Berkeley) 1/5/94
     77  */
     78 
     79 #ifndef _HP300_CPU_H_
     80 #define	_HP300_CPU_H_
     81 
     82 #if defined(_KERNEL)
     83 
     84 #if defined(_KERNEL_OPT)
     85 #include "opt_lockdebug.h"
     86 #endif
     87 
     88 /*
     89  * Exported definitions unique to hp300/68k cpu support.
     90  */
     91 
     92 /*
     93  * Get common m68k CPU definitions.
     94  */
     95 #include <m68k/cpu.h>
     96 #include <machine/hp300spu.h>
     97 
     98 /*
     99  * Get interrupt glue.
    100  */
    101 #include <machine/intr.h>
    102 
    103 /*
    104  * Arguments to hardclock and gatherstats encapsulate the previous
    105  * machine state in an opaque clockframe.  One the hp300, we use
    106  * what the hardware pushes on an interrupt (frame format 0).
    107  */
    108 struct clockframe {
    109 	u_short	sr;		/* sr at time of interrupt */
    110 	u_long	pc;		/* pc at time of interrupt */
    111 	u_short	vo;		/* vector offset (4-word frame) */
    112 };
    113 
    114 #define	CLKF_USERMODE(framep)	(((framep)->sr & PSL_S) == 0)
    115 #define	CLKF_PC(framep)		((framep)->pc)
    116 #if 0
    117 /* We would like to do it this way... */
    118 #define	CLKF_INTR(framep)	(((framep)->sr & PSL_M) == 0)
    119 #else
    120 /* but until we start using PSL_M, we have to do this instead */
    121 #include <machine/intr.h>
    122 #define	CLKF_INTR(framep)	(idepth > 1)	/* XXX */
    123 #endif
    124 
    125 
    126 /*
    127  * Preempt the current process if in interrupt from user mode,
    128  * or after the current trap/syscall if in system mode.
    129  */
    130 #define	cpu_need_resched(ci, flags)	\
    131 	do { ci->ci_want_resched = 1; aston(); } while (/* CONSTCOND */0)
    132 
    133 /*
    134  * Give a profiling tick to the current process when the user profiling
    135  * buffer pages are invalid.  On the hp300, request an ast to send us
    136  * through trap, marking the proc as needing a profiling tick.
    137  */
    138 #define	cpu_need_proftick(l)	\
    139 	do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */0)
    140 
    141 /*
    142  * Notify the current process (p) that it has a signal pending,
    143  * process as soon as possible.
    144  */
    145 #define	cpu_signotify(l)	aston()
    146 
    147 extern int astpending;		/* need to trap before returning to user mode */
    148 #define aston() (astpending++)
    149 
    150 #endif /* _KERNEL */
    151 
    152 /*
    153  * CTL_MACHDEP definitions.
    154  */
    155 #define	CPU_CONSDEV		1	/* dev_t: console terminal device */
    156 #define	CPU_MAXID		2	/* number of valid machdep ids */
    157 
    158 /*
    159  * The rest of this should probably be moved to <machine/hp300spu.h>,
    160  * although some of it could probably be put into generic 68k headers.
    161  */
    162 
    163 #ifdef _KERNEL
    164 extern	uint8_t *intiobase, *intiolimit, *extiobase;
    165 extern	void (*vectab[])(void);
    166 
    167 struct fpframe;
    168 
    169 /* locore.s functions */
    170 void	m68881_save(struct fpframe *);
    171 void	m68881_restore(struct fpframe *);
    172 int	suline(void *, void *);
    173 void	loadustp(int);
    174 
    175 void	doboot(void) __attribute__((__noreturn__));
    176 void	ecacheon(void);
    177 void	ecacheoff(void);
    178 
    179 /* clock.c functions */
    180 void	hp300_calibrate_delay(void);
    181 
    182 /* machdep.c functions */
    183 int	badaddr(void *);
    184 int	badbaddr(void *);
    185 
    186 /* what is this supposed to do? i.e. how is it different than startrtclock? */
    187 #define	enablertclock()
    188 
    189 #endif
    190 
    191 /* physical memory sections */
    192 #define	ROMBASE		(0x00000000)
    193 #define	INTIOBASE	(0x00400000)
    194 #define	INTIOTOP	(0x00600000)
    195 #define	EXTIOBASE	(0x00600000)
    196 #define	EXTIOTOP	(0x20000000)
    197 #define	MAXADDR		((paddr_t)(0 - NBPG))
    198 
    199 /*
    200  * Internal IO space:
    201  *
    202  * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE).
    203  *
    204  * Internal IO space is mapped in the kernel from ``intiobase'' to
    205  * ``intiolimit'' (defined in locore.s).  Since it is always mapped,
    206  * conversion between physical and kernel virtual addresses is easy.
    207  */
    208 #define	ISIIOVA(va) \
    209 	((uint8_t *)(va) >= intiobase && (uint8_t *)(va) < intiolimit)
    210 #define	IIOV(pa)	((paddr_t)(pa)-INTIOBASE+(vaddr_t)intiobase)
    211 #define	IIOP(va)	((vaddr_t)(va)-(vaddr_t)intiobase+INTIOBASE)
    212 #define	IIOPOFF(pa)	((paddr_t)(pa)-INTIOBASE)
    213 #define	IIOMAPSIZE	btoc(INTIOTOP-INTIOBASE)	/* 2mb */
    214 
    215 /*
    216  * External IO space:
    217  *
    218  * DIO ranges from select codes 0-63 at physical addresses given by:
    219  *	0x600000 + (sc - 32) * 0x10000
    220  * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for
    221  * their control space and the remaining areas, [0x200000-0x400000) and
    222  * [0x800000-0x1000000), are for additional space required by a card;
    223  * e.g. a display framebuffer.
    224  *
    225  * DIO-II ranges from select codes 132-255 at physical addresses given by:
    226  *	0x1000000 + (sc - 132) * 0x400000
    227  * The address range of DIO-II space is thus [0x1000000-0x20000000).
    228  *
    229  * DIO/DIO-II space is too large to map in its entirety, instead devices
    230  * are mapped into kernel virtual address space allocated from a range
    231  * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''.
    232  */
    233 #define	DIOBASE		(0x600000)
    234 #define	DIOTOP		(0x1000000)
    235 #define	DIOCSIZE	(0x10000)
    236 #define	DIOIIBASE	(0x01000000)
    237 #define	DIOIITOP	(0x20000000)
    238 #define	DIOIICSIZE	(0x00400000)
    239 
    240 /*
    241  * HP MMU
    242  */
    243 #define	MMUBASE		IIOPOFF(0x5F4000)
    244 #define	MMUSSTP		0x0
    245 #define	MMUUSTP		0x4
    246 #define	MMUTBINVAL	0x8
    247 #define	MMUSTAT		0xC
    248 #define	MMUCMD		MMUSTAT
    249 
    250 #define	MMU_UMEN	0x0001	/* enable user mapping */
    251 #define	MMU_SMEN	0x0002	/* enable supervisor mapping */
    252 #define	MMU_CEN		0x0004	/* enable data cache */
    253 #define	MMU_BERR	0x0008	/* bus error */
    254 #define	MMU_IEN		0x0020	/* enable instruction cache */
    255 #define	MMU_FPE		0x0040	/* enable 68881 FP coprocessor */
    256 #define	MMU_WPF		0x2000	/* write protect fault */
    257 #define	MMU_PF		0x4000	/* page fault */
    258 #define	MMU_PTF		0x8000	/* page table fault */
    259 
    260 #define	MMU_FAULT	(MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR)
    261 #define	MMU_ENAB	(MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE)
    262 
    263 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC)
    264 #define M68K_CACHEOPS_MACHDEP
    265 #endif
    266 
    267 #ifdef CACHE_HAVE_PAC
    268 #define M68K_CACHEOPS_MACHDEP_PCIA
    269 #endif
    270 
    271 #ifdef CACHE_HAVE_VAC
    272 #define M68K_CACHEOPS_MACHDEP_DCIA
    273 #define M68K_CACHEOPS_MACHDEP_DCIS
    274 #define M68K_CACHEOPS_MACHDEP_DCIU
    275 #define M68K_CACHEOPS_MACHDEP_TBIA
    276 #define M68K_CACHEOPS_MACHDEP_TBIS
    277 #define M68K_CACHEOPS_MACHDEP_TBIAS
    278 #define M68K_CACHEOPS_MACHDEP_TBIAU
    279 #endif
    280 
    281 #endif /* _HP300_CPU_H_ */
    282