Annotation of sys/arch/hp300/include/cpu.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: cpu.h,v 1.34 2007/05/30 17:10:42 miod Exp $ */
2: /* $NetBSD: cpu.h,v 1.28 1998/02/13 07:41:51 scottr Exp $ */
3:
4: /*
5: * Copyright (c) 1988 University of Utah.
6: * Copyright (c) 1982, 1990, 1993
7: * The Regents of the University of California. All rights reserved.
8: *
9: * This code is derived from software contributed to Berkeley by
10: * the Systems Programming Group of the University of Utah Computer
11: * Science Department.
12: *
13: * Redistribution and use in source and binary forms, with or without
14: * modification, are permitted provided that the following conditions
15: * are met:
16: * 1. Redistributions of source code must retain the above copyright
17: * notice, this list of conditions and the following disclaimer.
18: * 2. Redistributions in binary form must reproduce the above copyright
19: * notice, this list of conditions and the following disclaimer in the
20: * documentation and/or other materials provided with the distribution.
21: * 3. Neither the name of the University nor the names of its contributors
22: * may be used to endorse or promote products derived from this software
23: * without specific prior written permission.
24: *
25: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35: * SUCH DAMAGE.
36: *
37: * from: Utah $Hdr: cpu.h 1.16 91/03/25$
38: *
39: * @(#)cpu.h 8.4 (Berkeley) 1/5/94
40: */
41:
42: #ifndef _HP300_CPU_H_
43: #define _HP300_CPU_H_
44:
45: /*
46: * Exported definitions unique to hp300/68k cpu support.
47: */
48:
49: /*
50: * Get common m68k CPU definitions.
51: */
52: #include <m68k/cpu.h>
53:
54: #ifdef _KERNEL
55:
56: /*
57: * Get interrupt glue.
58: */
59: #include <machine/intr.h>
60:
61: /*
62: * definitions of cpu-dependent requirements
63: * referenced in generic code
64: */
65: #define cpu_wait(p) /* nothing */
66:
67: /*
68: * Arguments to hardclock and gatherstats encapsulate the previous
69: * machine state in an opaque clockframe. One the hp300, we use
70: * what the hardware pushes on an interrupt (frame format 0).
71: */
72: struct clockframe {
73: u_short sr; /* sr at time of interrupt */
74: u_long pc; /* pc at time of interrupt */
75: u_short vo; /* vector offset (4-word frame) */
76: };
77:
78: #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0)
79: #define CLKF_PC(framep) ((framep)->pc)
80: #if 0
81: /* We would like to do it this way... */
82: #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0)
83: #else
84: /* but until we start using PSL_M, we have to do this instead */
85: #define CLKF_INTR(framep) (0) /* XXX */
86: #endif
87:
88:
89: /*
90: * Preempt the current process if in interrupt from user mode,
91: * or after the current trap/syscall if in system mode.
92: */
93: extern int want_resched; /* resched() was called */
94: #define need_resched(ci) { want_resched = 1; aston(); }
95:
96: /*
97: * Give a profiling tick to the current process when the user profiling
98: * buffer pages are invalid. On the hp300, request an ast to send us
99: * through trap, marking the proc as needing a profiling tick.
100: */
101: #define need_proftick(p) aston()
102:
103: /*
104: * Notify the current process (p) that it has a signal pending,
105: * process as soon as possible.
106: */
107: #define signotify(p) aston()
108:
109: extern int astpending; /* need to trap before returning to user mode */
110: #define aston() (astpending = 1)
111:
112: #endif /* _KERNEL */
113:
114: /*
115: * CTL_MACHDEP definitions.
116: */
117: #define CPU_CONSDEV 1 /* dev_t: console terminal device */
118: #define CPU_CPUSPEED 2 /* CPU speed in MHz */
119: #define CPU_MACHINEID 3 /* machine id (HP_XXX) */
120: #define CPU_MMUID 4 /* mmu id (MMUID_*) */
121: #define CPU_MAXID 5 /* number of valid machdep ids */
122:
123: #define CTL_MACHDEP_NAMES { \
124: { 0, 0 }, \
125: { "console_device", CTLTYPE_STRUCT }, \
126: { "cpuspeed", CTLTYPE_INT }, \
127: { "machineid", CTLTYPE_INT }, \
128: { "mmuid", CTLTYPE_INT }, \
129: }
130:
131: /*
132: * The rest of this should probably be moved to <machine/hp300spu.h>,
133: * although some of it could probably be put into generic 68k headers.
134: */
135:
136: #ifdef _KERNEL
137: extern char *intiobase, *intiolimit;
138: extern void (*vectab[])(void);
139:
140: struct frame;
141: struct fpframe;
142: struct pcb;
143:
144: /* locore.s functions */
145: void PCIA(void);
146: __dead void doboot(void);
147: void ecacheon(void);
148: void ecacheoff(void);
149:
150: /* clock.c functions */
151: void hp300_calibrate_delay(void);
152:
153: /* machdep.c functions */
154: int badaddr(caddr_t);
155: int badbaddr(caddr_t);
156: void dumpconf(void);
157:
158: #endif /* _KERNEL */
159:
160: /* physical memory sections */
161: #define ROMBASE (0x00000000)
162: #define INTIOBASE (0x00400000)
163: #define INTIOTOP (0x00600000)
164: #define MAXADDR (0xFFFFF000)
165:
166: /*
167: * Internal IO space:
168: *
169: * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE).
170: *
171: * Internal IO space is mapped in the kernel from ``intiobase'' to
172: * ``intiolimit'' (defined in locore.s). Since it is always mapped,
173: * conversion between physical and kernel virtual addresses is easy.
174: */
175: #define ISIIOVA(va) \
176: ((char *)(va) >= intiobase && (char *)(va) < intiolimit)
177: #define IIOV(pa) ((int)(pa)-INTIOBASE+(int)intiobase)
178: #define IIOP(va) ((int)(va)-(int)intiobase+INTIOBASE)
179: #define IIOPOFF(pa) ((int)(pa)-INTIOBASE)
180: #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */
181:
182: /*
183: * HP MMU
184: */
185: #define MMUBASE IIOPOFF(0x5F4000)
186: #define MMUSSTP 0x0
187: #define MMUUSTP 0x4
188: #define MMUTBINVAL 0x8
189: #define MMUSTAT 0xC
190: #define MMUCMD MMUSTAT
191:
192: #define MMU_UMEN 0x0001 /* enable user mapping */
193: #define MMU_SMEN 0x0002 /* enable supervisor mapping */
194: #define MMU_CEN 0x0004 /* enable data cache */
195: #define MMU_BERR 0x0008 /* bus error */
196: #define MMU_IEN 0x0020 /* enable instruction cache */
197: #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */
198: #define MMU_WPF 0x2000 /* write protect fault */
199: #define MMU_PF 0x4000 /* page fault */
200: #define MMU_PTF 0x8000 /* page table fault */
201:
202: #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR)
203: #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE)
204:
205: #endif /* _HP300_CPU_H_ */
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