WebSVN – HelenOS-historic – Diff – /kernel/trunk/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/boot/boot.h>
#include <genarch/acpi/acpi.h>
#include <genarch/acpi/madt.h>
#include <config.h>
#include <synch/waitq.h>
#include <synch/synch.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/slab.h>
#include <mm/as.h>
#include <print.h>
#include <memstr.h>
#include <arch/i8259.h>
 
#ifdef CONFIG_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;
    }
 
    if (config.cpu_count > 1) {    
        page_mapping_insert(AS_KERNEL, (__address) l_apic, (__address) l_apic,
                  PAGE_NOT_CACHEABLE);
        page_mapping_insert(AS_KERNEL, (__address) io_apic, (__address) io_apic,
                  PAGE_NOT_CACHEABLE);
        }
 
        /*
         * Must be initialized outside the kmp thread, since it is waited
         * on before the kmp thread is created.
         */
        waitq_initialize(&kmp_completion_wq);
 
}
 
/*
 * 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)
{
    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);
 
    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("%s: bad processor entry #%d, will not send IPI to myself\n", __FUNCTION__, i);
            continue;
        }
       
        /*
         * Prepare new GDT for CPU in question.
         */
        if (!(gdt_new = (struct descriptor *) malloc(GDT_ITEMS*sizeof(struct descriptor), FRAME_ATOMIC)))
            panic("couldn't allocate memory for GDT\n");
 
        memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor));
        memsetb((__address)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0);
        protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor);
        protected_ap_gdtr.base = KA2PA((__address) gdt_new);
        gdtr.base = (__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.
             */
            if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_BLOCKING) == ESYNCH_TIMEOUT)
                printf("%s: waiting for cpu%d (APIC ID = %d) timed out\n", __FUNCTION__, config.cpu_active > i ? config.cpu_active : i, ops->cpu_apic_id(i));
        } 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);
}
 
int smp_irq_to_pin(int irq)
{
    ASSERT(ops != NULL);
    return ops->irq_to_pin(irq);
}
 
#endif /* CONFIG_SMP */
 

Rev 814	Rev 822
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/boot/boot.h>	33	#include <arch/boot/boot.h>
34	#include <genarch/acpi/acpi.h>	34	#include <genarch/acpi/acpi.h>
35	#include <genarch/acpi/madt.h>	35	#include <genarch/acpi/madt.h>
36	#include <config.h>	36	#include <config.h>
37	#include <synch/waitq.h>	37	#include <synch/waitq.h>
38	#include <synch/synch.h>	38	#include <synch/synch.h>
39	#include <arch/pm.h>	39	#include <arch/pm.h>
40	#include <func.h>	40	#include <func.h>
41	#include <panic.h>	41	#include <panic.h>
42	#include <debug.h>	42	#include <debug.h>
43	#include <arch/asm.h>	43	#include <arch/asm.h>
44	#include <mm/frame.h>	44	#include <mm/frame.h>
45	#include <mm/page.h>	45	#include <mm/page.h>
46	#include <mm/slab.h>	46	#include <mm/slab.h>
47	#include <mm/as.h>	47	#include <mm/as.h>
48	#include <print.h>	48	#include <print.h>
49	#include <memstr.h>	49	#include <memstr.h>
50	#include <arch/i8259.h>	50	#include <arch/i8259.h>
51		51
52	#ifdef CONFIG_SMP	52	#ifdef CONFIG_SMP
53		53
54	static struct smp_config_operations *ops = NULL;	54	static struct smp_config_operations *ops = NULL;
55		55
56	void smp_init(void)	56	void smp_init(void)
57	{	57	{
58	if (acpi_madt) {	58	if (acpi_madt) {
59	acpi_madt_parse();	59	acpi_madt_parse();
60	ops = &madt_config_operations;	60	ops = &madt_config_operations;
61	}	61	}
62	if (config.cpu_count == 1) {	62	if (config.cpu_count == 1) {
63	mps_init();	63	mps_init();
64	ops = &mps_config_operations;	64	ops = &mps_config_operations;
65	}	65	}
66		66
67	if (config.cpu_count > 1) {	67	if (config.cpu_count > 1) {
68	page_mapping_insert(AS_KERNEL, (__address) l_apic, (__address) l_apic,	68	page_mapping_insert(AS_KERNEL, (__address) l_apic, (__address) l_apic,
69	PAGE_NOT_CACHEABLE);	69	PAGE_NOT_CACHEABLE);
70	page_mapping_insert(AS_KERNEL, (__address) io_apic, (__address) io_apic,	70	page_mapping_insert(AS_KERNEL, (__address) io_apic, (__address) io_apic,
71	PAGE_NOT_CACHEABLE);	71	PAGE_NOT_CACHEABLE);
72	}	72	}
73		73
74	/*	74	/*
75	* Must be initialized outside the kmp thread, since it is waited	75	* Must be initialized outside the kmp thread, since it is waited
76	* on before the kmp thread is created.	76	* on before the kmp thread is created.
77	*/	77	*/
78	waitq_initialize(&kmp_completion_wq);	78	waitq_initialize(&kmp_completion_wq);
79		79
80	}	80	}
81		81
82	/*	82	/*
83	* Kernel thread for bringing up application processors. It becomes clear	83	* Kernel thread for bringing up application processors. It becomes clear
84	* that we need an arrangement like this (AP's being initialized by a kernel	84	* that we need an arrangement like this (AP's being initialized by a kernel
85	* thread), for a thread has its dedicated stack. (The stack used during the	85	* thread), for a thread has its dedicated stack. (The stack used during the
86	* BSP initialization (prior the very first call to scheduler()) will be used	86	* BSP initialization (prior the very first call to scheduler()) will be used
87	* as an initialization stack for each AP.)	87	* as an initialization stack for each AP.)
88	*/	88	*/
89	void kmp(void *arg)	89	void kmp(void *arg)
90	{	90	{
91	int i;	91	int i;
92		92
93	ASSERT(ops != NULL);	93	ASSERT(ops != NULL);
94		94
95	waitq_initialize(&ap_completion_wq);	95	waitq_initialize(&ap_completion_wq);
96		96
97	/*	97	/*
98	* We need to access data in frame 0.	98	* We need to access data in frame 0.
99	* We boldly make use of kernel address space mapping.	99	* We boldly make use of kernel address space mapping.
100	*/	100	*/
101		101
102	/*	102	/*
103	* Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot()	103	* Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot()
104	*/	104	*/
105	((__u16 ) (PA2KA(0x467+0))) = ((__address) ap_boot) >> 4; /* segment */	105	((__u16 ) (PA2KA(0x467+0))) = ((__address) ap_boot) >> 4; /* segment */
106	((__u16 ) (PA2KA(0x467+2))) = 0; /* offset */	106	((__u16 ) (PA2KA(0x467+2))) = 0; /* offset */
107		107
108	/*	108	/*
109	* Save 0xa to address 0xf of the CMOS RAM.	109	* Save 0xa to address 0xf of the CMOS RAM.
110	* BIOS will not do the POST after the INIT signal.	110	* BIOS will not do the POST after the INIT signal.
111	*/	111	*/
112	outb(0x70,0xf);	112	outb(0x70,0xf);
113	outb(0x71,0xa);	113	outb(0x71,0xa);
114		114
115	pic_disable_irqs(0xffff);	115	pic_disable_irqs(0xffff);
116	apic_init();	116	apic_init();
117		117
118	for (i = 0; i < ops->cpu_count(); i++) {	118	for (i = 0; i < ops->cpu_count(); i++) {
119	struct descriptor *gdt_new;	119	struct descriptor *gdt_new;
120		120
121	/*	121	/*
122	* Skip processors marked unusable.	122	* Skip processors marked unusable.
123	*/	123	*/
124	if (!ops->cpu_enabled(i))	124	if (!ops->cpu_enabled(i))
125	continue;	125	continue;
126		126
127	/*	127	/*
128	* The bootstrap processor is already up.	128	* The bootstrap processor is already up.
129	*/	129	*/
130	if (ops->cpu_bootstrap(i))	130	if (ops->cpu_bootstrap(i))
131	continue;	131	continue;
132		132
133	if (ops->cpu_apic_id(i) == l_apic_id()) {	133	if (ops->cpu_apic_id(i) == l_apic_id()) {
134	printf("%s: bad processor entry #%d, will not send IPI to myself\n", __FUNCTION__, i);	134	printf("%s: bad processor entry #%d, will not send IPI to myself\n", __FUNCTION__, i);
135	continue;	135	continue;
136	}	136	}
137		137
138	/*	138	/*
139	* Prepare new GDT for CPU in question.	139	* Prepare new GDT for CPU in question.
140	*/	140	*/
141	if (!(gdt_new = (struct descriptor ) malloc(GDT_ITEMSsizeof(struct descriptor))))	141	if (!(gdt_new = (struct descriptor ) malloc(GDT_ITEMSsizeof(struct descriptor), FRAME_ATOMIC)))
142	panic("couldn't allocate memory for GDT\n");	142	panic("couldn't allocate memory for GDT\n");
143		143
144	memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor));	144	memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor));
145	memsetb((__address)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0);	145	memsetb((__address)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0);
146	protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor);	146	protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor);
147	protected_ap_gdtr.base = KA2PA((__address) gdt_new);	147	protected_ap_gdtr.base = KA2PA((__address) gdt_new);
148	gdtr.base = (__address) gdt_new;	148	gdtr.base = (__address) gdt_new;
149		149
150	if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) {	150	if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) {
151	/*	151	/*
152	* There may be just one AP being initialized at	152	* There may be just one AP being initialized at
153	* the time. After it comes completely up, it is	153	* the time. After it comes completely up, it is
154	* supposed to wake us up.	154	* supposed to wake us up.
155	*/	155	*/
156	if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_BLOCKING) == ESYNCH_TIMEOUT)	156	if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_BLOCKING) == ESYNCH_TIMEOUT)
157	printf("%s: waiting for cpu%d (APIC ID = %d) timed out\n", __FUNCTION__, config.cpu_active > i ? config.cpu_active : i, ops->cpu_apic_id(i));	157	printf("%s: waiting for cpu%d (APIC ID = %d) timed out\n", __FUNCTION__, config.cpu_active > i ? config.cpu_active : i, ops->cpu_apic_id(i));
158	} else	158	} else
159	printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i));	159	printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i));
160	}	160	}
161		161
162	/*	162	/*
163	* Wakeup the kinit thread so that	163	* Wakeup the kinit thread so that
164	* system initialization can go on.	164	* system initialization can go on.
165	*/	165	*/
166	waitq_wakeup(&kmp_completion_wq, WAKEUP_FIRST);	166	waitq_wakeup(&kmp_completion_wq, WAKEUP_FIRST);
167	}	167	}
168		168
169	int smp_irq_to_pin(int irq)	169	int smp_irq_to_pin(int irq)
170	{	170	{
171	ASSERT(ops != NULL);	171	ASSERT(ops != NULL);
172	return ops->irq_to_pin(irq);	172	return ops->irq_to_pin(irq);
173	}	173	}
174		174
175	#endif /* CONFIG_SMP */	175	#endif /* CONFIG_SMP */
176		176

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(root)/kernel/trunk/arch/ia32/src/smp/smp.c – Rev 814 → 822