cpu.h revision 1.38.8.3 1 /* $NetBSD: cpu.h,v 1.38.8.3 2001/12/08 08:22:40 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 _HP300_CPU_H_
46 #define _HP300_CPU_H_
47
48 #if defined(_KERNEL_OPT)
49 #include "opt_lockdebug.h"
50 #endif
51
52 /*
53 * Exported definitions unique to hp300/68k cpu support.
54 */
55
56 /*
57 * Get common m68k CPU definitions.
58 */
59 #include <m68k/cpu.h>
60
61 /*
62 * Get interrupt glue.
63 */
64 #include <machine/intr.h>
65
66 #include <sys/sched.h>
67 struct cpu_info {
68 struct schedstate_percpu ci_schedstate; /* scheduler state */
69 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
70 u_long ci_spin_locks; /* # of spin locks held */
71 u_long ci_simple_locks; /* # of simple locks held */
72 #endif
73 };
74
75 #ifdef _KERNEL
76 extern struct cpu_info cpu_info_store;
77
78 #define curcpu() (&cpu_info_store)
79
80 /*
81 * definitions of cpu-dependent requirements
82 * referenced in generic code
83 */
84 #define cpu_swapin(p) /* nothing */
85 #define cpu_wait(p) /* nothing */
86 #define cpu_swapout(p) /* nothing */
87 #define cpu_number() 0
88
89 void cpu_proc_fork(struct proc *, struct proc *);
90
91 /*
92 * Arguments to hardclock and gatherstats encapsulate the previous
93 * machine state in an opaque clockframe. One the hp300, we use
94 * what the hardware pushes on an interrupt (frame format 0).
95 */
96 struct clockframe {
97 u_short sr; /* sr at time of interrupt */
98 u_long pc; /* pc at time of interrupt */
99 u_short vo; /* vector offset (4-word frame) */
100 };
101
102 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0)
103 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0)
104 #define CLKF_PC(framep) ((framep)->pc)
105 #if 0
106 /* We would like to do it this way... */
107 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0)
108 #else
109 /* but until we start using PSL_M, we have to do this instead */
110 #define CLKF_INTR(framep) (0) /* XXX */
111 #endif
112
113
114 /*
115 * Preempt the current process if in interrupt from user mode,
116 * or after the current trap/syscall if in system mode.
117 */
118 extern int want_resched; /* resched() was called */
119 #define need_resched(ci) { want_resched++; aston(); }
120
121 /*
122 * Give a profiling tick to the current process when the user profiling
123 * buffer pages are invalid. On the hp300, request an ast to send us
124 * through trap, marking the proc as needing a profiling tick.
125 */
126 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); }
127
128 /*
129 * Notify the current process (p) that it has a signal pending,
130 * process as soon as possible.
131 */
132 #define signotify(p) aston()
133
134 extern int astpending; /* need to trap before returning to user mode */
135 #define aston() (astpending++)
136
137 #endif /* _KERNEL */
138
139 /*
140 * CTL_MACHDEP definitions.
141 */
142 #define CPU_CONSDEV 1 /* dev_t: console terminal device */
143 #define CPU_MAXID 2 /* number of valid machdep ids */
144
145 #define CTL_MACHDEP_NAMES { \
146 { 0, 0 }, \
147 { "console_device", CTLTYPE_STRUCT }, \
148 }
149
150 /*
151 * The rest of this should probably be moved to <machine/hp300spu.h>,
152 * although some of it could probably be put into generic 68k headers.
153 */
154
155 #ifdef _KERNEL
156 extern char *intiobase, *intiolimit;
157 extern void (*vectab[]) __P((void));
158
159 struct frame;
160 struct fpframe;
161 struct pcb;
162
163 /* locore.s functions */
164 void m68881_save __P((struct fpframe *));
165 void m68881_restore __P((struct fpframe *));
166 void DCIA __P((void));
167 void DCIS __P((void));
168 void DCIU __P((void));
169 void ICIA __P((void));
170 void ICPA __P((void));
171 void PCIA __P((void));
172 void TBIA __P((void));
173 void TBIS __P((vaddr_t));
174 void TBIAS __P((void));
175 void TBIAU __P((void));
176 #if defined(M68040)
177 void DCFA __P((void));
178 void DCFP __P((paddr_t));
179 void DCFL __P((paddr_t));
180 void DCPL __P((paddr_t));
181 void DCPP __P((paddr_t));
182 void ICPL __P((paddr_t));
183 void ICPP __P((paddr_t));
184 #endif
185 int suline __P((caddr_t, caddr_t));
186 void savectx __P((struct pcb *));
187 void switch_exit __P((struct lwp *));
188 void switch_lwp_exit __P((struct lwp *));
189 void proc_trampoline __P((void));
190 void loadustp __P((int));
191
192 void doboot __P((void))
193 __attribute__((__noreturn__));
194 void ecacheon __P((void));
195 void ecacheoff __P((void));
196
197 /* clock.c functions */
198 void hp300_calibrate_delay __P((void));
199
200 /* machdep.c functions */
201 int badaddr __P((caddr_t));
202 int badbaddr __P((caddr_t));
203
204 /* sys_machdep.c functions */
205 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *));
206
207 /* vm_machdep.c functions */
208 void physaccess __P((caddr_t, caddr_t, int, int));
209 void physunaccess __P((caddr_t, int));
210 int kvtop __P((caddr_t));
211
212 /* what is this supposed to do? i.e. how is it different than startrtclock? */
213 #define enablertclock()
214
215 #endif
216
217 /* physical memory sections */
218 #define ROMBASE (0x00000000)
219 #define INTIOBASE (0x00400000)
220 #define INTIOTOP (0x00600000)
221 #define EXTIOBASE (0x00600000)
222 #define EXTIOTOP (0x20000000)
223 #define MAXADDR (0xFFFFF000)
224
225 /*
226 * Internal IO space:
227 *
228 * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE).
229 *
230 * Internal IO space is mapped in the kernel from ``intiobase'' to
231 * ``intiolimit'' (defined in locore.s). Since it is always mapped,
232 * conversion between physical and kernel virtual addresses is easy.
233 */
234 #define ISIIOVA(va) \
235 ((char *)(va) >= intiobase && (char *)(va) < intiolimit)
236 #define IIOV(pa) ((int)(pa)-INTIOBASE+(int)intiobase)
237 #define IIOP(va) ((int)(va)-(int)intiobase+INTIOBASE)
238 #define IIOPOFF(pa) ((int)(pa)-INTIOBASE)
239 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */
240
241 /*
242 * External IO space:
243 *
244 * DIO ranges from select codes 0-63 at physical addresses given by:
245 * 0x600000 + (sc - 32) * 0x10000
246 * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for
247 * their control space and the remaining areas, [0x200000-0x400000) and
248 * [0x800000-0x1000000), are for additional space required by a card;
249 * e.g. a display framebuffer.
250 *
251 * DIO-II ranges from select codes 132-255 at physical addresses given by:
252 * 0x1000000 + (sc - 132) * 0x400000
253 * The address range of DIO-II space is thus [0x1000000-0x20000000).
254 *
255 * DIO/DIO-II space is too large to map in its entirety, instead devices
256 * are mapped into kernel virtual address space allocated from a range
257 * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''.
258 */
259 #define DIOBASE (0x600000)
260 #define DIOTOP (0x1000000)
261 #define DIOCSIZE (0x10000)
262 #define DIOIIBASE (0x01000000)
263 #define DIOIITOP (0x20000000)
264 #define DIOIICSIZE (0x00400000)
265
266 /*
267 * HP MMU
268 */
269 #define MMUBASE IIOPOFF(0x5F4000)
270 #define MMUSSTP 0x0
271 #define MMUUSTP 0x4
272 #define MMUTBINVAL 0x8
273 #define MMUSTAT 0xC
274 #define MMUCMD MMUSTAT
275
276 #define MMU_UMEN 0x0001 /* enable user mapping */
277 #define MMU_SMEN 0x0002 /* enable supervisor mapping */
278 #define MMU_CEN 0x0004 /* enable data cache */
279 #define MMU_BERR 0x0008 /* bus error */
280 #define MMU_IEN 0x0020 /* enable instruction cache */
281 #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */
282 #define MMU_WPF 0x2000 /* write protect fault */
283 #define MMU_PF 0x4000 /* page fault */
284 #define MMU_PTF 0x8000 /* page table fault */
285
286 #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR)
287 #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE)
288
289 #endif /* _HP300_CPU_H_ */
290