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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * @OSF_COPYRIGHT@
24: */
25: /*
26: * Mach Operating System
27: * Copyright (c) 1991,1990 Carnegie Mellon University
28: * All Rights Reserved.
29: *
30: * Permission to use, copy, modify and distribute this software and its
31: * documentation is hereby granted, provided that both the copyright
32: * notice and this permission notice appear in all copies of the
33: * software, derivative works or modified versions, and any portions
34: * thereof, and that both notices appear in supporting documentation.
35: *
36: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
37: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
38: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
39: *
40: * Carnegie Mellon requests users of this software to return to
41: *
42: * Software Distribution Coordinator or [email protected]
43: * School of Computer Science
44: * Carnegie Mellon University
45: * Pittsburgh PA 15213-3890
46: *
47: * any improvements or extensions that they make and grant Carnegie Mellon
48: * the rights to redistribute these changes.
49: */
50:
51: /*
52: */
53:
54: #include <cpus.h>
55: #include <mp_v1_1.h>
56:
57: #if NCPUS > 1
58:
59: #include <types.h>
60: #include <mach/machine.h>
61: #include <kern/lock.h>
62: #include <kern/cpu_data.h>
63: #include <kern/processor.h>
64: #include <kern/misc_protos.h>
65: #include <kern/machine.h>
66: #include <i386/db_machdep.h>
67: #include <ddb/db_run.h>
68: #include <i386/AT386/mp/mp.h>
69: #include <i386/setjmp.h>
70: #include <i386/misc_protos.h>
71:
72: int cpu_int_word[NCPUS];
73:
74: extern void cpu_interrupt(int cpu);
75: extern int get_ncpus(void);
76:
77: /*
78: * Generate a clock interrupt on next running cpu
79: *
80: * Instead of having the master processor interrupt
81: * all active processors, each processor in turn interrupts
82: * the next active one. This avoids all slave processors
83: * accessing the same R/W data simultaneously.
84: */
85:
86: void
87: slave_clock(void)
88: {
89: }
90:
91: void
92: i386_signal_cpus(int event)
93: {
94: }
95:
96: /*ARGSUSED*/
97: void
98: init_ast_check(
99: processor_t processor)
100: {
101: }
102:
103: void
104: cause_ast_check(
105: processor_t processor)
106: {
107: }
108:
109: /*ARGSUSED*/
110: kern_return_t
111: cpu_start(
112: int slot_num)
113: {
114: printf("cpu_start not implemented\n");
115: return (KERN_FAILURE);
116: }
117:
118:
119: int real_ncpus;
120: int wncpu = -1;
121:
122: /*
123: * Find out how many cpus will run
124: */
125:
126: void
127: mp_probe_cpus(void)
128: {
129: int i;
130:
131: /*
132: * get real number of cpus
133: */
134:
135: real_ncpus = get_ncpus();
136:
137: if (wncpu <= 0)
138: wncpu = NCPUS;
139:
140: /*
141: * Ignore real number of cpus it if number of requested cpus
142: * is smaller.
143: * Keep it if number of requested cpu is null or larger.
144: */
145:
146: if (real_ncpus < wncpu)
147: wncpu = real_ncpus;
148: #if MP_V1_1
149: {
150: extern void validate_cpus(int);
151:
152: /*
153: * We do NOT have CPUS numbered contiguously.
154: */
155:
156: validate_cpus(wncpu);
157: }
158: #else
159: for (i=0; i < wncpu; i++)
160: machine_slot[i].is_cpu = TRUE;
161: #endif
162: }
163:
164: /*
165: * invoke kdb on slave processors
166: */
167:
168: void
169: remote_kdb(void)
170: {
171: }
172:
173: /*
174: * Clear kdb interrupt
175: */
176:
177: void
178: clear_kdb_intr(void)
179: {
180: }
181: #else /* NCPUS > 1 */
182: int cpu_int_word[NCPUS];
183: #endif /* NCPUS > 1 */
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