source: mainline/kernel/arch/ia64/src/smp/smp.c@ 50b3d30

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 50b3d30 was 50b3d30, checked in by Jakub Vana <jakub.vana@…>, 17 years ago

IA64: repair similators support

  • Property mode set to 100644
File size: 4.5 KB
Line 
1/*
2 * Copyright (c) 2005 Jakub Vana
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup ia64
30 * @{
31 */
32/** @file
33 */
34
35#include <arch.h>
36#include <arch/ski/ski.h>
37#include <arch/drivers/it.h>
38#include <arch/interrupt.h>
39#include <arch/barrier.h>
40#include <arch/asm.h>
41#include <arch/register.h>
42#include <arch/types.h>
43#include <arch/context.h>
44#include <arch/stack.h>
45#include <arch/mm/page.h>
46#include <mm/as.h>
47#include <config.h>
48#include <userspace.h>
49#include <console/console.h>
50#include <proc/uarg.h>
51#include <syscall/syscall.h>
52#include <ddi/irq.h>
53#include <ddi/device.h>
54#include <arch/drivers/ega.h>
55#include <arch/bootinfo.h>
56#include <genarch/kbd/i8042.h>
57#include <genarch/kbd/ns16550.h>
58#include <smp/smp.h>
59#include <smp/ipi.h>
60#include <arch/atomic.h>
61#include <panic.h>
62#include <print.h>
63
64
65
66
67
68
69#ifdef CONFIG_SMP
70
71
72extern char cpu_by_id_eid_list[256][256];
73
74
75static void sapic_init(void)
76{
77 bootinfo->sapic=(unative_t *)(PA2KA((unative_t)(bootinfo->sapic))|FW_OFFSET);
78}
79
80
81
82static void ipi_broadcast_arch_all(int ipi )
83{
84 int id,eid;
85 int myid,myeid;
86
87 myid=ia64_get_cpu_id();
88 myeid=ia64_get_cpu_eid();
89
90
91 for(id=0;id<256;id++)
92 for(eid=0;eid<256;eid++)
93 if((id!=myid) || (eid!=myeid))
94 ipi_send_ipi(id,eid,ipi);
95}
96
97void ipi_broadcast_arch(int ipi )
98{
99 int id,eid;
100 int myid,myeid;
101
102 myid=ia64_get_cpu_id();
103 myeid=ia64_get_cpu_eid();
104
105 //printf("Sending ipi %d on %d\n",ipi,CPU->id);
106 for(id=0;id<256;id++)
107 for(eid=0;eid<256;eid++)
108 if((id!=myid) || (eid!=myeid))
109 if(cpu_by_id_eid_list[id][eid])
110 ipi_send_ipi(id,eid,ipi);
111
112}
113
114
115void smp_init(void)
116{
117 if(!bootinfo->hello_configured) return;
118 //If we have not system prepared by hello, we are not able to start AP's
119 //this means we are running on simulator
120
121 sapic_init();
122 ipi_broadcast_arch_all(bootinfo->wakeup_intno);
123 volatile long long brk;
124 for(brk=0;brk<100LL*1024LL*1024LL;brk++); //wait a while before CPUs starts
125
126 config.cpu_count=0;
127 int id,eid;
128
129 for(id=0;id<256;id++)
130 for(eid=0;eid<256;eid++)
131 if(cpu_by_id_eid_list[id][eid]==1){
132 config.cpu_count++;
133 cpu_by_id_eid_list[id][eid]=2;
134
135 }
136}
137
138
139void kmp(void *arg __attribute__((unused)))
140{
141 int id,eid;
142 int myid,myeid;
143
144 myid=ia64_get_cpu_id();
145 myeid=ia64_get_cpu_eid();
146
147 for(id=0;id<256;id++)
148 for(eid=0;eid<256;eid++)
149 if((id!=myid) || (eid!=myeid))
150 if(cpu_by_id_eid_list[id][eid]!=0){
151 if(cpu_by_id_eid_list[id][eid]==1){
152
153 //config.cpu_count++;
154 //cpu_by_id_eid_list[id][eid]=2;
155 printf("Found Late CPU ID:%d EDI:%d Not added to system!!!\n",id,eid);
156 continue;
157 }
158 cpu_by_id_eid_list[id][eid]=3;
159 /*
160 * There may be just one AP being initialized at
161 * the time. After it comes completely up, it is
162 * supposed to wake us up.
163 */
164 if (waitq_sleep_timeout(&ap_completion_wq, 1000000,
165 SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT) {
166 printf("%s: waiting for cpu ID:%d EID:%d"
167 "timed out\n", __FUNCTION__,
168 id, eid);
169 }
170
171 }
172}
173#endif
174
175
176/*This is just a hack for linking with assembler - may be removed in future*/
177#ifndef CONFIG_SMP
178void main_ap(void);
179void main_ap(void)
180{
181 while(1);
182}
183
184#endif
185
186/** @}
187 */
188
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