cpu.h revision 1.53 1 1.53 tsutsui /* $NetBSD: cpu.h,v 1.53 2011/05/12 15:07:42 tsutsui Exp $ */
2 1.1 oki
3 1.1 oki /*
4 1.52 rmind * Copyright (c) 1988 University of Utah.
5 1.1 oki * Copyright (c) 1982, 1990, 1993
6 1.1 oki * The Regents of the University of California. All rights reserved.
7 1.29 agc *
8 1.29 agc * This code is derived from software contributed to Berkeley by
9 1.29 agc * the Systems Programming Group of the University of Utah Computer
10 1.29 agc * Science Department.
11 1.29 agc *
12 1.29 agc * Redistribution and use in source and binary forms, with or without
13 1.29 agc * modification, are permitted provided that the following conditions
14 1.29 agc * are met:
15 1.29 agc * 1. Redistributions of source code must retain the above copyright
16 1.29 agc * notice, this list of conditions and the following disclaimer.
17 1.29 agc * 2. Redistributions in binary form must reproduce the above copyright
18 1.29 agc * notice, this list of conditions and the following disclaimer in the
19 1.29 agc * documentation and/or other materials provided with the distribution.
20 1.29 agc * 3. Neither the name of the University nor the names of its contributors
21 1.29 agc * may be used to endorse or promote products derived from this software
22 1.29 agc * without specific prior written permission.
23 1.29 agc *
24 1.29 agc * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 1.29 agc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 1.29 agc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 1.29 agc * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 1.29 agc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 1.29 agc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 1.29 agc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 1.29 agc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 1.29 agc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 1.29 agc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 1.29 agc * SUCH DAMAGE.
35 1.29 agc *
36 1.29 agc * from: Utah $Hdr: cpu.h 1.16 91/03/25$
37 1.29 agc *
38 1.29 agc * @(#)cpu.h 8.4 (Berkeley) 1/5/94
39 1.29 agc */
40 1.1 oki
41 1.1 oki #ifndef _X68K_CPU_H_
42 1.1 oki #define _X68K_CPU_H_
43 1.1 oki
44 1.32 yamt #if defined(_KERNEL)
45 1.32 yamt
46 1.1 oki /*
47 1.1 oki * Exported definitions unique to x68k/68k cpu support.
48 1.1 oki */
49 1.21 minoura
50 1.26 mrg #if defined(_KERNEL_OPT)
51 1.50 mrg #include "opt_m68k_arch.h"
52 1.23 thorpej #include "opt_lockdebug.h"
53 1.21 minoura #endif
54 1.1 oki
55 1.1 oki /*
56 1.3 thorpej * Get common m68k CPU definitions.
57 1.3 thorpej */
58 1.3 thorpej #include <m68k/cpu.h>
59 1.3 thorpej #define M68K_MMU_MOTOROLA
60 1.3 thorpej
61 1.3 thorpej /*
62 1.13 minoura * Get interrupt glue.
63 1.13 minoura */
64 1.13 minoura #include <machine/intr.h>
65 1.13 minoura
66 1.1 oki /*
67 1.1 oki * Arguments to hardclock and gatherstats encapsulate the previous
68 1.1 oki * machine state in an opaque clockframe. One the x68k, we use
69 1.1 oki * what the hardware pushes on an interrupt (frame format 0).
70 1.1 oki */
71 1.1 oki struct clockframe {
72 1.1 oki u_short sr; /* sr at time of interrupt */
73 1.1 oki u_long pc; /* pc at time of interrupt */
74 1.1 oki u_short vo; /* vector offset (4-word frame) */
75 1.1 oki };
76 1.1 oki
77 1.1 oki #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0)
78 1.1 oki #define CLKF_PC(framep) ((framep)->pc)
79 1.1 oki #if 0
80 1.1 oki /* We would like to do it this way... */
81 1.1 oki #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0)
82 1.1 oki #else
83 1.1 oki /* but until we start using PSL_M, we have to do this instead */
84 1.1 oki #define CLKF_INTR(framep) (0) /* XXX */
85 1.1 oki #endif
86 1.1 oki
87 1.1 oki
88 1.1 oki /*
89 1.1 oki * Preempt the current process if in interrupt from user mode,
90 1.1 oki * or after the current trap/syscall if in system mode.
91 1.1 oki */
92 1.39 isaki #define cpu_need_resched(ci, flags) \
93 1.39 isaki do { (ci)->ci_want_resched = 1; aston(); } while (/* CONSTCOND */ 0)
94 1.1 oki
95 1.1 oki /*
96 1.1 oki * Give a profiling tick to the current process when the user profiling
97 1.1 oki * buffer pages are invalid. On the x68k, request an ast to send us
98 1.1 oki * through trap, marking the proc as needing a profiling tick.
99 1.1 oki */
100 1.40 isaki #define cpu_need_proftick(l) \
101 1.40 isaki do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */ 0)
102 1.1 oki
103 1.1 oki /*
104 1.1 oki * Notify the current process (p) that it has a signal pending,
105 1.1 oki * process as soon as possible.
106 1.1 oki */
107 1.36 ad #define cpu_signotify(l) aston()
108 1.1 oki
109 1.8 scottr extern int astpending; /* need to trap before returning to user mode */
110 1.1 oki #define aston() (astpending++)
111 1.23 thorpej
112 1.23 thorpej #endif /* _KERNEL */
113 1.1 oki
114 1.1 oki /*
115 1.1 oki * CTL_MACHDEP definitions.
116 1.1 oki */
117 1.1 oki #define CPU_CONSDEV 1 /* dev_t: console terminal device */
118 1.1 oki #define CPU_MAXID 2 /* number of valid machdep ids */
119 1.1 oki
120 1.1 oki /*
121 1.13 minoura * The rest of this should probably be moved to <machine/x68kcpu.h>
122 1.1 oki * although some of it could probably be put into generic 68k headers.
123 1.1 oki */
124 1.1 oki
125 1.1 oki #ifdef _KERNEL
126 1.3 thorpej extern int machineid;
127 1.53 tsutsui extern uint8_t *intiobase;
128 1.53 tsutsui extern uint8_t *intiolimit;
129 1.2 oki
130 1.6 oki /* fpu.c functions */
131 1.33 chs int fpu_probe(void);
132 1.2 oki
133 1.6 oki /* machdep.c functions */
134 1.33 chs void dumpsys(void);
135 1.2 oki
136 1.6 oki /* locore.s functions */
137 1.2 oki struct fpframe;
138 1.38 christos int suline(void *, void *);
139 1.33 chs void loadustp(int);
140 1.33 chs void m68881_save(struct fpframe *);
141 1.33 chs void m68881_restore(struct fpframe *);
142 1.17 minoura
143 1.17 minoura /* machdep.c functions */
144 1.34 he int badaddr(volatile void*);
145 1.34 he int badbaddr(volatile void*);
146 1.2 oki
147 1.1 oki #endif
148 1.1 oki
149 1.1 oki /* physical memory sections */
150 1.1 oki #define INTIOBASE (0x00C00000)
151 1.1 oki #define INTIOTOP (0x01000000)
152 1.1 oki
153 1.1 oki /*
154 1.1 oki * Internal IO space:
155 1.1 oki *
156 1.1 oki * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE).
157 1.1 oki *
158 1.1 oki * Internal IO space is mapped in the kernel from ``IODEVbase'' to
159 1.1 oki * ``intiolimit'' (defined in locore.s). Since it is always mapped,
160 1.1 oki * conversion between physical and kernel virtual addresses is easy.
161 1.1 oki */
162 1.47 isaki #define IIOV(pa) ((u_int)(pa) - INTIOBASE + (u_int)intiobase)
163 1.47 isaki #define IIOP(va) ((u_int)(va) - (u_int)intiobase + INTIOBASE)
164 1.1 oki #define IIOPOFF(pa) ((int)(pa)-INTIOBASE)
165 1.1 oki #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */
166 1.1 oki
167 1.1 oki #endif /* _X68K_CPU_H_ */
168