cpu.h revision 1.35.8.1 1 /* $NetBSD: cpu.h,v 1.35.8.1 1999/12/27 18:31:25 wrstuden Exp $ */
2
3 /*-
4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 /*
41 * Copyright (c) 1988 University of Utah.
42 * Copyright (c) 1982, 1990, 1993
43 * The Regents of the University of California. All rights reserved.
44 *
45 * This code is derived from software contributed to Berkeley by
46 * the Systems Programming Group of the University of Utah Computer
47 * Science Department.
48 *
49 * Redistribution and use in source and binary forms, with or without
50 * modification, are permitted provided that the following conditions
51 * are met:
52 * 1. Redistributions of source code must retain the above copyright
53 * notice, this list of conditions and the following disclaimer.
54 * 2. Redistributions in binary form must reproduce the above copyright
55 * notice, this list of conditions and the following disclaimer in the
56 * documentation and/or other materials provided with the distribution.
57 * 3. All advertising materials mentioning features or use of this software
58 * must display the following acknowledgement:
59 * This product includes software developed by the University of
60 * California, Berkeley and its contributors.
61 * 4. Neither the name of the University nor the names of its contributors
62 * may be used to endorse or promote products derived from this software
63 * without specific prior written permission.
64 *
65 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
66 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
67 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
68 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
69 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
70 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
71 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
72 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
73 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
74 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
75 * SUCH DAMAGE.
76 *
77 * from: Utah $Hdr: cpu.h 1.16 91/03/25$
78 *
79 * @(#)cpu.h 8.4 (Berkeley) 1/5/94
80 */
81
82 #ifndef _ALPHA_CPU_H_
83 #define _ALPHA_CPU_H_
84
85 #if defined(_KERNEL) && !defined(_LKM)
86 #include "opt_multiprocessor.h"
87 #endif
88
89 /*
90 * Exported definitions unique to Alpha cpu support.
91 */
92
93 #include <machine/alpha_cpu.h>
94
95 #ifdef _KERNEL
96 #include <machine/frame.h>
97
98 #if defined(MULTIPROCESSOR)
99
100 #include <sys/lock.h> /* will also get LOCKDEBUG */
101
102 struct cpu_info {
103 /*
104 * Public members.
105 */
106 struct proc *ci_curproc; /* current owner of the processor */
107 struct simplelock ci_slock; /* lock on this data structure */
108 cpuid_t ci_cpuid; /* our CPU ID */
109 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
110 u_long ci_spin_locks; /* # of spin locks held */
111 u_long ci_simple_locks; /* # of simple locks held */
112 #endif
113
114 /*
115 * Private members.
116 */
117 struct proc *ci_fpcurproc; /* current owner of the FPU */
118 paddr_t ci_curpcb; /* PA of current HW PCB */
119 struct pcb *ci_idle_pcb; /* our idle PCB */
120 paddr_t ci_idle_pcb_paddr; /* PA of idle PCB */
121 u_long ci_flags; /* flags; see below */
122 u_long ci_ipis; /* interprocessor interrupts pending */
123 struct device *ci_dev; /* pointer to our device */
124 };
125
126 #define CPUF_PRIMARY 0x01 /* CPU is primary CPU */
127 #define CPUF_PRESENT 0x02 /* CPU is present */
128 #define CPUF_RUNNING 0x04 /* CPU is running */
129
130 extern u_long cpus_running;
131 extern struct cpu_info cpu_info[];
132
133 #define curcpu() ((struct cpu_info *)alpha_pal_rdval())
134
135 #define fpcurproc curcpu()->ci_fpcurproc
136 #define curpcb curcpu()->ci_curpcb
137
138 void cpu_boot_secondary_processors __P((void));
139 #else
140 extern struct proc *fpcurproc; /* current owner of FPU */
141 extern paddr_t curpcb; /* PA of current HW context */
142 #endif /* MULTIPROCESSOR */
143
144 /*
145 * definitions of cpu-dependent requirements
146 * referenced in generic code
147 */
148 #define cpu_wait(p) /* nothing */
149 #define cpu_number() alpha_pal_whami()
150
151 /*
152 * Arguments to hardclock and gatherstats encapsulate the previous
153 * machine state in an opaque clockframe. One the Alpha, we use
154 * what we push on an interrupt (a trapframe).
155 */
156 struct clockframe {
157 struct trapframe cf_tf;
158 };
159 #define CLKF_USERMODE(framep) \
160 (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_USERMODE) != 0)
161 #define CLKF_BASEPRI(framep) \
162 (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_IPL_MASK) == 0)
163 #define CLKF_PC(framep) ((framep)->cf_tf.tf_regs[FRAME_PC])
164 /*
165 * XXX No way to accurately tell if we were in interrupt mode before taking
166 * clock interrupt.
167 */
168 #define CLKF_INTR(framep) (0)
169
170 /*
171 * Preempt the current process if in interrupt from user mode,
172 * or after the current trap/syscall if in system mode.
173 */
174 #define need_resched() { want_resched = 1; aston(); }
175
176 /*
177 * Give a profiling tick to the current process when the user profiling
178 * buffer pages are invalid. On the hp300, request an ast to send us
179 * through trap, marking the proc as needing a profiling tick.
180 */
181 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); }
182
183 /*
184 * Notify the current process (p) that it has a signal pending,
185 * process as soon as possible.
186 */
187 #define signotify(p) aston()
188
189 #define aston() (astpending = 1)
190
191 u_int64_t astpending; /* need to trap before returning to user mode */
192 u_int64_t want_resched; /* resched() was called */
193 #endif /* _KERNEL */
194
195 /*
196 * CTL_MACHDEP definitions.
197 */
198 #define CPU_CONSDEV 1 /* dev_t: console terminal device */
199 #define CPU_ROOT_DEVICE 2 /* string: root device name */
200 #define CPU_UNALIGNED_PRINT 3 /* int: print unaligned accesses */
201 #define CPU_UNALIGNED_FIX 4 /* int: fix unaligned accesses */
202 #define CPU_UNALIGNED_SIGBUS 5 /* int: SIGBUS unaligned accesses */
203 #define CPU_BOOTED_KERNEL 6 /* string: booted kernel name */
204 #define CPU_MAXID 7 /* 6 valid machdep IDs */
205
206 #define CTL_MACHDEP_NAMES { \
207 { 0, 0 }, \
208 { "console_device", CTLTYPE_STRUCT }, \
209 { "root_device", CTLTYPE_STRING }, \
210 { "unaligned_print", CTLTYPE_INT }, \
211 { "unaligned_fix", CTLTYPE_INT }, \
212 { "unaligned_sigbus", CTLTYPE_INT }, \
213 { "booted_kernel", CTLTYPE_STRING }, \
214 }
215
216 #ifdef _KERNEL
217
218 struct pcb;
219 struct proc;
220 struct reg;
221 struct rpb;
222 struct trapframe;
223
224 int badaddr __P((void *, size_t));
225
226 #endif /* _KERNEL */
227 #endif /* _ALPHA_CPU_H_ */
228