WebSVN – HelenOS – Diff – /branches/dynload/kernel/arch/ia32/src/smp/smp.c


/*
 * Copyright (C) 2005 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <smp/smp.h>
#include <arch/smp/smp.h>
#include <arch/smp/mps.h>
#include <arch/smp/ap.h>
#include <arch/acpi/acpi.h>
#include <arch/acpi/madt.h>
#include <config.h>
#include <synch/waitq.h>
#include <arch/pm.h>
#include <func.h>
#include <panic.h>
#include <debug.h>
#include <arch/asm.h>
#include <mm/frame.h>
#include <mm/page.h>
#include <mm/heap.h>
 
#ifdef __SMP__
 
static struct smp_config_operations *ops = NULL;
 
void smp_init(void)
{
    if (acpi_madt) {
        acpi_madt_parse();
        ops = &madt_config_operations;
    }
    if (config.cpu_count == 1) {
        mps_init();
        ops = &mps_config_operations;
    }
}
 
/*
 * Kernel thread for bringing up application processors. It becomes clear
 * that we need an arrangement like this (AP's being initialized by a kernel
 * thread), for a thread has its dedicated stack. (The stack used during the
 * BSP initialization (prior the very first call to scheduler()) will be used
 * as an initialization stack for each AP.)
 */
void kmp(void *arg)
{
    __address src, dst;
    int i;
 
    ASSERT(ops != NULL);
 
    waitq_initialize(&ap_completion_wq);
 
    /*
     * We need to access data in frame 0.
     * We boldly make use of kernel address space mapping.
     */
 
    /*
     * Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot()
     */
    *((__u16 *) (PA2KA(0x467+0))) =  ((__address) ap_boot) >> 4;    /* segment */
    *((__u16 *) (PA2KA(0x467+2))) =  0;             /* offset */
   
    /*
     * Save 0xa to address 0xf of the CMOS RAM.
     * BIOS will not do the POST after the INIT signal.
     */
    outb(0x70,0xf);
    outb(0x71,0xa);
 
    cpu_priority_high();
 
    pic_disable_irqs(0xffff);
    apic_init();
 
    for (i = 0; i < ops->cpu_count(); i++) {
        struct descriptor *gdt_new;
   
        /*
         * Skip processors marked unusable.
         */
        if (!ops->cpu_enabled(i))
            continue;
 
        /*
         * The bootstrap processor is already up.
         */
        if (ops->cpu_bootstrap(i))
            continue;
 
        if (ops->cpu_apic_id(i) == l_apic_id()) {
            printf("kmp: bad processor entry #%d, will not send IPI to myself\n", i);
            continue;
        }
       
        /*
         * Prepare new GDT for CPU in question.
         */
        if (!(gdt_new = (struct descriptor *) malloc(GDT_ITEMS*sizeof(struct descriptor))))
            panic("couldn't allocate memory for GDT\n");
 
        memcopy(gdt, gdt_new, GDT_ITEMS*sizeof(struct descriptor));
        memsetb(&gdt_new[TSS_DES], sizeof(struct descriptor), 0);
        gdtr.base = KA2PA((__address) gdt_new);
 
        if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) {
            /*
                 * There may be just one AP being initialized at
             * the time. After it comes completely up, it is
             * supposed to wake us up.
                 */
            waitq_sleep(&ap_completion_wq);
            cpu_priority_high();
        }
        else {
            printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i));
        }
    }
 
    /*
     * Wakeup the kinit thread so that
     * system initialization can go on.
     */
    waitq_wakeup(&kmp_completion_wq, WAKEUP_FIRST);
}
 
#endif /* __SMP__ */
 

Rev 128	Rev 129
1	/*	1	/*
2	* Copyright (C) 2005 Jakub Jermar	2	* Copyright (C) 2005 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <smp/smp.h>	29	#include <smp/smp.h>
30	#include <arch/smp/smp.h>	30	#include <arch/smp/smp.h>
31	#include <arch/smp/mps.h>	31	#include <arch/smp/mps.h>
32	#include <arch/smp/ap.h>	32	#include <arch/smp/ap.h>
33	#include <arch/acpi/acpi.h>	33	#include <arch/acpi/acpi.h>
34	#include <arch/acpi/madt.h>	34	#include <arch/acpi/madt.h>
35	#include <config.h>	35	#include <config.h>
36	#include <synch/waitq.h>	36	#include <synch/waitq.h>
37	#include <arch/pm.h>	37	#include <arch/pm.h>
38	#include <func.h>	38	#include <func.h>
39	#include <panic.h>	39	#include <panic.h>
40	#include <debug.h>	40	#include <debug.h>
41	#include <arch/asm.h>	41	#include <arch/asm.h>
42	#include <mm/frame.h>	42	#include <mm/frame.h>
43	#include <mm/page.h>	43	#include <mm/page.h>
44	#include <mm/heap.h>	44	#include <mm/heap.h>
45		45
46	#ifdef __SMP__	46	#ifdef __SMP__
47		47
48	static struct smp_config_operations *ops = NULL;	48	static struct smp_config_operations *ops = NULL;
49		49
50	void smp_init(void)	50	void smp_init(void)
51	{	51	{
52	if (acpi_madt) {	52	if (acpi_madt) {
53	acpi_madt_parse();	53	acpi_madt_parse();
-		54	ops = &madt_config_operations;
54	}	55	}
55	if (config.cpu_count == 1) {	56	if (config.cpu_count == 1) {
56	mps_init();	57	mps_init();
57	ops = &mps_config_operations;	58	ops = &mps_config_operations;
58	}	59	}
59	}	60	}
60		61
61	/*	62	/*
62	* Kernel thread for bringing up application processors. It becomes clear	63	* Kernel thread for bringing up application processors. It becomes clear
63	* that we need an arrangement like this (AP's being initialized by a kernel	64	* that we need an arrangement like this (AP's being initialized by a kernel
64	* thread), for a thread has its dedicated stack. (The stack used during the	65	* thread), for a thread has its dedicated stack. (The stack used during the
65	* BSP initialization (prior the very first call to scheduler()) will be used	66	* BSP initialization (prior the very first call to scheduler()) will be used
66	* as an initialization stack for each AP.)	67	* as an initialization stack for each AP.)
67	*/	68	*/
68	void kmp(void *arg)	69	void kmp(void *arg)
69	{	70	{
70	__address src, dst;	71	__address src, dst;
71	int i;	72	int i;
72		73
73	ASSERT(ops != NULL);	74	ASSERT(ops != NULL);
74		75
75	waitq_initialize(&ap_completion_wq);	76	waitq_initialize(&ap_completion_wq);
76		77
77	/*	78	/*
78	* We need to access data in frame 0.	79	* We need to access data in frame 0.
79	* We boldly make use of kernel address space mapping.	80	* We boldly make use of kernel address space mapping.
80	*/	81	*/
81		82
82	/*	83	/*
83	* Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot()	84	* Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot()
84	*/	85	*/
85	((__u16 ) (PA2KA(0x467+0))) = ((__address) ap_boot) >> 4; /* segment */	86	((__u16 ) (PA2KA(0x467+0))) = ((__address) ap_boot) >> 4; /* segment */
86	((__u16 ) (PA2KA(0x467+2))) = 0; /* offset */	87	((__u16 ) (PA2KA(0x467+2))) = 0; /* offset */
87		88
88	/*	89	/*
89	* Save 0xa to address 0xf of the CMOS RAM.	90	* Save 0xa to address 0xf of the CMOS RAM.
90	* BIOS will not do the POST after the INIT signal.	91	* BIOS will not do the POST after the INIT signal.
91	*/	92	*/
92	outb(0x70,0xf);	93	outb(0x70,0xf);
93	outb(0x71,0xa);	94	outb(0x71,0xa);
94		95
95	cpu_priority_high();	96	cpu_priority_high();
96		97
97	pic_disable_irqs(0xffff);	98	pic_disable_irqs(0xffff);
98	apic_init();	99	apic_init();
99		100
100	for (i = 0; i < ops->cpu_count(); i++) {	101	for (i = 0; i < ops->cpu_count(); i++) {
101	struct descriptor *gdt_new;	102	struct descriptor *gdt_new;
102		103
103	/*	104	/*
104	* Skip processors marked unusable.	105	* Skip processors marked unusable.
105	*/	106	*/
106	if (!ops->cpu_enabled(i))	107	if (!ops->cpu_enabled(i))
107	continue;	108	continue;
108		109
109	/*	110	/*
110	* The bootstrap processor is already up.	111	* The bootstrap processor is already up.
111	*/	112	*/
112	if (ops->cpu_bootstrap(i))	113	if (ops->cpu_bootstrap(i))
113	continue;	114	continue;
114		115
115	if (ops->cpu_apic_id(i) == l_apic_id()) {	116	if (ops->cpu_apic_id(i) == l_apic_id()) {
116	printf("kmp: bad processor entry #%d, will not send IPI to myself\n", i);	117	printf("kmp: bad processor entry #%d, will not send IPI to myself\n", i);
117	continue;	118	continue;
118	}	119	}
119		120
120	/*	121	/*
121	* Prepare new GDT for CPU in question.	122	* Prepare new GDT for CPU in question.
122	*/	123	*/
123	if (!(gdt_new = (struct descriptor ) malloc(GDT_ITEMSsizeof(struct descriptor))))	124	if (!(gdt_new = (struct descriptor ) malloc(GDT_ITEMSsizeof(struct descriptor))))
124	panic("couldn't allocate memory for GDT\n");	125	panic("couldn't allocate memory for GDT\n");
125		126
126	memcopy(gdt, gdt_new, GDT_ITEMS*sizeof(struct descriptor));	127	memcopy(gdt, gdt_new, GDT_ITEMS*sizeof(struct descriptor));
127	memsetb(&gdt_new[TSS_DES], sizeof(struct descriptor), 0);	128	memsetb(&gdt_new[TSS_DES], sizeof(struct descriptor), 0);
128	gdtr.base = KA2PA((__address) gdt_new);	129	gdtr.base = KA2PA((__address) gdt_new);
129		130
130	if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) {	131	if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) {
131	/*	132	/*
132	* There may be just one AP being initialized at	133	* There may be just one AP being initialized at
133	* the time. After it comes completely up, it is	134	* the time. After it comes completely up, it is
134	* supposed to wake us up.	135	* supposed to wake us up.
135	*/	136	*/
136	waitq_sleep(&ap_completion_wq);	137	waitq_sleep(&ap_completion_wq);
137	cpu_priority_high();	138	cpu_priority_high();
138	}	139	}
139	else {	140	else {
140	printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i));	141	printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i));
141	}	142	}
142	}	143	}
143		144
144	/*	145	/*
145	* Wakeup the kinit thread so that	146	* Wakeup the kinit thread so that
146	* system initialization can go on.	147	* system initialization can go on.
147	*/	148	*/
148	waitq_wakeup(&kmp_completion_wq, WAKEUP_FIRST);	149	waitq_wakeup(&kmp_completion_wq, WAKEUP_FIRST);
149	}	150	}
150		151
151	#endif /* __SMP__ */	152	#endif /* __SMP__ */
152		153

Subversion Repositories HelenOS

(root)/branches/dynload/kernel/arch/ia32/src/smp/smp.c @ 4346 – Rev 128 → 129