1/*	$NetBSD: cpu.h,v 1.78 2011/02/08 20:20:08 rmind 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. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah $Hdr: cpu.h 1.16 91/03/25$
37 *
38 *	@(#)cpu.h	7.7 (Berkeley) 6/27/91
39 */
40
41#ifndef _MACHINE_CPU_H_
42#define _MACHINE_CPU_H_
43
44#if defined(_KERNEL_OPT)
45#include "opt_lockdebug.h"
46#endif
47
48/*
49 * Get common m68k CPU definitions.
50 */
51#include <m68k/cpu.h>
52
53#if defined(_KERNEL)
54/*
55 * Exported definitions unique to amiga/68k cpu support.
56 */
57#define	M68K_MMU_MOTOROLA
58
59extern volatile unsigned int interrupt_depth;
60/*
61 * Arguments to hardclock and gatherstats encapsulate the previous
62 * machine state in an opaque clockframe.  One the hp300, we use
63 * what the hardware pushes on an interrupt (frame format 0).
64 */
65struct clockframe {
66	u_short	sr;		/* sr at time of interrupt */
67	u_long	pc;		/* pc at time of interrupt */
68	u_short	vo;		/* vector offset (4-word frame) */
69};
70
71#define	CLKF_USERMODE(framep)	(((framep)->sr & PSL_S) == 0)
72#define	CLKF_PC(framep)		((framep)->pc)
73#define	CLKF_INTR(framep)	(interrupt_depth > 1)
74
75
76/*
77 * Preempt the current process if in interrupt from user mode,
78 * or after the current trap/syscall if in system mode.
79 */
80#define	cpu_need_resched(ci,flags)	{ci->ci_want_resched = 1; setsoftast();}
81
82/*
83 * Give a profiling tick to the current process from the softclock
84 * interrupt.  On hp300, request an ast to send us through trap(),
85 * marking the proc as needing a profiling tick.
86 */
87#define	profile_tick(l, framep)	((l)->l_pflag |= LP_OWEUPC, setsoftast())
88#define	cpu_need_proftick(l)	((l)->l_pflag |= LP_OWEUPC, setsoftast())
89
90/*
91 * Notify the current process (p) that it has a signal pending,
92 * process as soon as possible.
93 */
94#define	cpu_signotify(l)	setsoftast()
95
96extern int astpending;		/* need trap before returning to user mode */
97#define setsoftast()		(astpending = 1)
98
99/*
100 * The rest of this should probably be moved to ../amiga/amigacpu.h,
101 * although some of it could probably be put into generic 68k headers.
102 */
103
104/* values for machineid (happen to be AFF_* settings of AttnFlags) */
105#define AMIGA_68020	(1L<<1)
106#define AMIGA_68030	(1L<<2)
107#define AMIGA_68040	(1L<<3)
108#define AMIGA_68881	(1L<<4)
109#define AMIGA_68882	(1L<<5)
110#define	AMIGA_FPU40	(1L<<6)
111#define AMIGA_68060	(1L<<7)
112
113extern int machineid;
114
115#endif /* _KERNEL */
116
117/*
118 * CTL_MACHDEP definitions.
119 */
120#define CPU_CONSDEV	1	/* dev_t: console terminal device */
121#define CPU_MAXID	2	/* number of valid machdep ids */
122
123#ifdef _KERNEL
124/*
125 * Prototypes from amiga_init.c
126 */
127void	*alloc_z2mem(long);
128
129/*
130 * Prototypes from autoconf.c
131 */
132int	is_a600(void);
133int	is_a1200(void);
134int	is_a3000(void);
135int	is_a4000(void);
136#ifdef DRACO
137#define	is_draco() ((machineid >> 24) == 0x7d ? (machineid >> 16) & 0xff : 0)
138#endif
139
140#ifdef DRACO
141/*
142 * Prototypes from kbd.c
143 */
144void	drkbdintr(void);
145
146/*
147 * Prototypes from drsc.c
148 */
149void	drsc_handler(void);
150#endif
151
152/*
153 * Prototypes from locore.s
154 */
155void	clearseg(vm_offset_t);
156void	doboot(void) __attribute__((__noreturn__));
157void	loadustp(int);
158void	physcopyseg(vm_offset_t, vm_offset_t);
159u_int	probeva(u_int, u_int);
160
161/*
162 * Prototypes from machdep.c
163 */
164int	badaddr(void *);
165int	badbaddr(void *);
166void	bootsync(void);
167
168/*
169 * Prototypes from pmap.c:
170 */
171void	pmap_bootstrap(vm_offset_t, vm_offset_t);
172
173#endif /* _KERNEL */
174
175/*
176 * Reorder protection when accessing device registers.
177 */
178#define amiga_membarrier()
179
180/*
181 * Finish all bus operations and flush pipelines.
182 */
183#define amiga_cpu_sync() __asm volatile ("nop")
184
185#endif /* !_MACHINE_CPU_H_ */
186