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cpu.h revision 1.14 
      1 /*	$NetBSD: cpu.h,v 1.14 2003/01/18 06:05:42 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1982, 1990, 1993
      6  *	The Regents of the University of California.  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	8.4 (Berkeley) 1/5/94
     43  */
     44 
     45 #ifndef _NEWS68K_CPU_H_
     46 #define _NEWS68K_CPU_H_
     47 
     48 /*
     49  * Exported definitions unique to news68k 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 
     61 /*
     62  * XXX news1700 L2 cache would be corrupted with DC_BE and IC_BE...
     63  * XXX Should these be defined in machine/cpu.h?
     64  */
     65 #undef CACHE_ON
     66 #undef CACHE_CLR
     67 #undef IC_CLEAR
     68 #undef DC_CLEAR
     69 #define CACHE_ON	(DC_WA|DC_CLR|DC_ENABLE|IC_CLR|IC_ENABLE)
     70 #define CACHE_CLR	CACHE_ON
     71 #define IC_CLEAR	(DC_WA|DC_ENABLE|IC_CLR|IC_ENABLE)
     72 #define DC_CLEAR	(DC_WA|DC_CLR|DC_ENABLE|IC_ENABLE)
     73 
     74 #define DCIC_CLR	(DC_CLR|IC_CLR)
     75 #define CACHE_BE	(DC_BE|IC_BE)
     76 
     77 /*
     78  * Get interrupt glue.
     79  */
     80 #include <machine/intr.h>
     81 
     82 #include <sys/sched.h>
     83 struct cpu_info {
     84 	struct schedstate_percpu ci_schedstate; /* scheduler state */
     85 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
     86 	u_long ci_spin_locks;		/* # of spin locks held */
     87 	u_long ci_simple_locks;		/* # of simple locks held */
     88 #endif
     89 };
     90 
     91 #ifdef _KERNEL
     92 extern struct cpu_info cpu_info_store;
     93 
     94 #define	curcpu()			(&cpu_info_store)
     95 
     96 /*
     97  * definitions of cpu-dependent requirements
     98  * referenced in generic code
     99  */
    100 #define cpu_swapin(p)			/* nothing */
    101 #define cpu_wait(p)			/* nothing */
    102 #define cpu_swapout(p)			/* nothing */
    103 #define cpu_number()			0
    104 
    105 void	cpu_proc_fork(struct proc *, struct proc *);
    106 
    107 /*
    108  * Arguments to hardclock and gatherstats encapsulate the previous
    109  * machine state in an opaque clockframe.  One the hp300, we use
    110  * what the hardware pushes on an interrupt (frame format 0).
    111  */
    112 struct clockframe {
    113 	u_short	sr;		/* sr at time of interrupt */
    114 	u_long	pc;		/* pc at time of interrupt */
    115 	u_short	vo;		/* vector offset (4-word frame) */
    116 };
    117 
    118 #define CLKF_USERMODE(framep)	(((framep)->sr & PSL_S) == 0)
    119 #define CLKF_BASEPRI(framep)	(((framep)->sr & PSL_IPL) == 0)
    120 #define CLKF_PC(framep)		((framep)->pc)
    121 #if 0
    122 /* We would like to do it this way... */
    123 #define CLKF_INTR(framep)	(((framep)->sr & PSL_M) == 0)
    124 #else
    125 /* but until we start using PSL_M, we have to do this instead */
    126 #define CLKF_INTR(framep)	(0)	/* XXX */
    127 #endif
    128 
    129 
    130 /*
    131  * Preempt the current process if in interrupt from user mode,
    132  * or after the current trap/syscall if in system mode.
    133  */
    134 extern int want_resched;	/* resched() was called */
    135 #define need_resched(ci)	do { want_resched++; aston(); } while(0)
    136 
    137 /*
    138  * Give a profiling tick to the current process when the user profiling
    139  * buffer pages are invalid.  On the hp300, request an ast to send us
    140  * through trap, marking the proc as needing a profiling tick.
    141  */
    142 #define need_proftick(p)	do { (p)->p_flag |= P_OWEUPC; aston(); } while(0)
    143 
    144 /*
    145  * Notify the current process (p) that it has a signal pending,
    146  * process as soon as possible.
    147  */
    148 #define signotify(p)	aston()
    149 
    150 extern int astpending;		/* need to trap before returning to user mode */
    151 extern volatile u_char *ctrl_ast;
    152 #define aston()		do { astpending++; *ctrl_ast = 0xff; } while(0)
    153 
    154 #endif /* _KERNEL */
    155 
    156 /*
    157  * CTL_MACHDEP definitions.
    158  */
    159 #define CPU_CONSDEV		1	/* dev_t: console terminal device */
    160 #define CPU_MAXID		2	/* number of valid machdep ids */
    161 
    162 #define CTL_MACHDEP_NAMES { \
    163 	{ 0, 0 }, \
    164 	{ "console_device", CTLTYPE_STRUCT }, \
    165 }
    166 
    167 #ifdef _KERNEL
    168 
    169 #if defined(news1700) || defined(news1200)
    170 #ifndef M68030
    171 #define M68030
    172 #endif
    173 #define M68K_MMU_MOTOROLA
    174 #endif
    175 
    176 #if defined(news1700)
    177 #define CACHE_HAVE_PAC
    178 #endif
    179 
    180 #endif
    181 
    182 #ifdef _KERNEL
    183 extern int systype;
    184 #define NEWS1700	0
    185 #define NEWS1200	1
    186 
    187 extern int cpuspeed;
    188 extern char *intiobase, *intiolimit, *extiobase;
    189 extern u_int intiobase_phys, intiotop_phys;
    190 extern u_int extiobase_phys, extiotop_phys;
    191 extern u_int intrcnt[];
    192 
    193 extern void (*vectab[])(void);
    194 
    195 struct frame;
    196 struct fpframe;
    197 struct pcb;
    198 
    199 /* locore.s functions */
    200 void m68881_save(struct fpframe *);
    201 void m68881_restore(struct fpframe *);
    202 
    203 int suline(caddr_t, caddr_t);
    204 void savectx(struct pcb *);
    205 void switch_exit(struct lwp *);
    206 void proc_trampoline(void);
    207 void loadustp(int);
    208 void badtrap(void);
    209 void intrhand_vectored(void);
    210 int getsr(void);
    211 
    212 
    213 void doboot(int)
    214 	__attribute__((__noreturn__));
    215 void nmihand(struct frame *);
    216 void ecacheon(void);
    217 void ecacheoff(void);
    218 
    219 /* machdep.c functions */
    220 int badaddr(caddr_t, int);
    221 int badbaddr(caddr_t);
    222 
    223 /* sys_machdep.c functions */
    224 int cachectl1(unsigned long, vaddr_t, size_t, struct proc *);
    225 
    226 /* vm_machdep.c functions */
    227 void physaccess(caddr_t, caddr_t, int, int);
    228 void physunaccess(caddr_t, int);
    229 int kvtop(caddr_t);
    230 
    231 #endif
    232 
    233 /* physical memory sections */
    234 #define ROMBASE		(0xe0000000)
    235 
    236 #define INTIOBASE1700	(0xe0c00000)
    237 #define INTIOTOP1700	(0xe1d00000) /* XXX */
    238 #define EXTIOBASE1700	(0xf0f00000)
    239 #define EXTIOTOP1700	(0xf1000000) /* XXX */
    240 
    241 #define INTIOBASE1200	(0xe1000000)
    242 #define INTIOTOP1200	(0xe1d00000) /* XXX */
    243 #define EXTIOBASE1200	(0xe4000000)
    244 #define EXTIOTOP1200	(0xe4020000) /* XXX */
    245 
    246 #define MAXADDR		(0xfffff000)
    247 
    248 /*
    249  * Internal IO space:
    250  *
    251  * Internal IO space is mapped in the kernel from ``intiobase'' to
    252  * ``intiolimit'' (defined in locore.s).  Since it is always mapped,
    253  * conversion between physical and kernel virtual addresses is easy.
    254  */
    255 #define ISIIOVA(va) \
    256 	((char *)(va) >= intiobase && (char *)(va) < intiolimit)
    257 #define IIOV(pa)	(((u_int)(pa) - intiobase_phys) + (u_int)intiobase)
    258 #define ISIIOPA(pa) \
    259 	((u_int)(pa) >= intiobase_phys && (u_int)(pa) < intiotop_phys)
    260 #define IIOP(va)	(((u_int)(va) - (u_int)intiobase) + intiobase_phys)
    261 #define IIOPOFF(pa)	((u_int)(pa) - intiobase_phys)
    262 
    263 /* XXX EIO space mapping should be modified like hp300 XXX */
    264 #define	EIOSIZE		(extiotop_phys - extiobase_phys)
    265 #define ISEIOVA(va) \
    266 	((char *)(va) >= extiobase && (char *)(va) < (char *)EIOSIZE)
    267 #define EIOV(pa)	(((u_int)(pa) - extiobase_phys) + (u_int)extiobase)
    268 
    269 #if defined(CACHE_HAVE_PAC) || defined(CACHE_HAVE_VAC)
    270 #define M68K_CACHEOPS_MACHDEP
    271 #endif
    272 
    273 #ifdef CACHE_HAVE_PAC
    274 #define M68K_CACHEOPS_MACHDEP_PCIA
    275 #endif
    276 
    277 #ifdef CACHE_HAVE_VAC
    278 #define M68K_CACHEOPS_MACHDEP_DCIA
    279 #define M68K_CACHEOPS_MACHDEP_DCIS
    280 #define M68K_CACHEOPS_MACHDEP_DCIU
    281 #endif
    282 
    283 #endif /* !_NEWS68K_CPU_H_ */
    284