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/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>
#include <print.h>
#include <memstr.h>
#include <arch/i8259.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;
    }
 
    if (config.cpu_count > 1) {    
        map_page_to_frame((__address)l_apic, (__address)l_apic,
                  PAGE_NOT_CACHEABLE, 0);
        map_page_to_frame((__address) io_apic,
                  (__address) io_apic,
                  PAGE_NOT_CACHEABLE, 0);
        }
 
        /*
         * 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)
{
    __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");
 
        memcpy(gdt_new, gdt, GDT_ITEMS*sizeof(struct descriptor));
        memsetb((__address)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0);
        ap_bootstrap_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.
                 */
            waitq_sleep(&ap_completion_wq);
        }
        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 273	Rev 277
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	#include <print.h>	45	#include <print.h>
46	#include <memstr.h>	46	#include <memstr.h>
47	#include <arch/i8259.h>	47	#include <arch/i8259.h>
48		48
49	#ifdef __SMP__	49	#ifdef __SMP__
50		50
51	static struct smp_config_operations *ops = NULL;	51	static struct smp_config_operations *ops = NULL;
52		52
53	void smp_init(void)	53	void smp_init(void)
54	{	54	{
55	if (acpi_madt) {	55	if (acpi_madt) {
56	acpi_madt_parse();	56	acpi_madt_parse();
57	ops = &madt_config_operations;	57	ops = &madt_config_operations;
58	}	58	}
59	if (config.cpu_count == 1) {	59	if (config.cpu_count == 1) {
60	mps_init();	60	mps_init();
61	ops = &mps_config_operations;	61	ops = &mps_config_operations;
62	}	62	}
63		63
64	if (config.cpu_count > 1) {	64	if (config.cpu_count > 1) {
65	map_page_to_frame((__address)l_apic, KA2PA((__address)l_apic),	65	map_page_to_frame((__address)l_apic, (__address)l_apic,
66	PAGE_NOT_CACHEABLE, 0);	66	PAGE_NOT_CACHEABLE, 0);
67	map_page_to_frame((__address) io_apic,	67	map_page_to_frame((__address) io_apic,
68	KA2PA((__address) io_apic),	68	(__address) io_apic,
69	PAGE_NOT_CACHEABLE, 0);	69	PAGE_NOT_CACHEABLE, 0);
70	}	70	}
71		71
72	/*	72	/*
73	* Must be initialized outside the kmp thread, since it is waited	73	* Must be initialized outside the kmp thread, since it is waited
74	* on before the kmp thread is created.	74	* on before the kmp thread is created.
75	*/	75	*/
76	waitq_initialize(&kmp_completion_wq);	76	waitq_initialize(&kmp_completion_wq);
77		77
78	}	78	}
79		79
80	/*	80	/*
81	* Kernel thread for bringing up application processors. It becomes clear	81	* Kernel thread for bringing up application processors. It becomes clear
82	* that we need an arrangement like this (AP's being initialized by a kernel	82	* that we need an arrangement like this (AP's being initialized by a kernel
83	* thread), for a thread has its dedicated stack. (The stack used during the	83	* thread), for a thread has its dedicated stack. (The stack used during the
84	* BSP initialization (prior the very first call to scheduler()) will be used	84	* BSP initialization (prior the very first call to scheduler()) will be used
85	* as an initialization stack for each AP.)	85	* as an initialization stack for each AP.)
86	*/	86	*/
87	void kmp(void *arg)	87	void kmp(void *arg)
88	{	88	{
89	__address src, dst;	89	__address src, dst;
90	int i;	90	int i;
91		91
92	ASSERT(ops != NULL);	92	ASSERT(ops != NULL);
93		93
94	waitq_initialize(&ap_completion_wq);	94	waitq_initialize(&ap_completion_wq);
95		95
96	/*	96	/*
97	* We need to access data in frame 0.	97	* We need to access data in frame 0.
98	* We boldly make use of kernel address space mapping.	98	* We boldly make use of kernel address space mapping.
99	*/	99	*/
100		100
101	/*	101	/*
102	* Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot()	102	* Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot()
103	*/	103	*/
104	((__u16 ) (PA2KA(0x467+0))) = ((__address) ap_boot) >> 4; /* segment */	104	((__u16 ) (PA2KA(0x467+0))) = ((__address) ap_boot) >> 4; /* segment */
105	((__u16 ) (PA2KA(0x467+2))) = 0; /* offset */	105	((__u16 ) (PA2KA(0x467+2))) = 0; /* offset */
106		106
107	/*	107	/*
108	* Save 0xa to address 0xf of the CMOS RAM.	108	* Save 0xa to address 0xf of the CMOS RAM.
109	* BIOS will not do the POST after the INIT signal.	109	* BIOS will not do the POST after the INIT signal.
110	*/	110	*/
111	outb(0x70,0xf);	111	outb(0x70,0xf);
112	outb(0x71,0xa);	112	outb(0x71,0xa);
113		113
114	cpu_priority_high();	114	cpu_priority_high();
115		115
116	pic_disable_irqs(0xffff);	116	pic_disable_irqs(0xffff);
117	apic_init();	117	apic_init();
118		118
119	for (i = 0; i < ops->cpu_count(); i++) {	119	for (i = 0; i < ops->cpu_count(); i++) {
120	struct descriptor *gdt_new;	120	struct descriptor *gdt_new;
121		121
122	/*	122	/*
123	* Skip processors marked unusable.	123	* Skip processors marked unusable.
124	*/	124	*/
125	if (!ops->cpu_enabled(i))	125	if (!ops->cpu_enabled(i))
126	continue;	126	continue;
127		127
128	/*	128	/*
129	* The bootstrap processor is already up.	129	* The bootstrap processor is already up.
130	*/	130	*/
131	if (ops->cpu_bootstrap(i))	131	if (ops->cpu_bootstrap(i))
132	continue;	132	continue;
133		133
134	if (ops->cpu_apic_id(i) == l_apic_id()) {	134	if (ops->cpu_apic_id(i) == l_apic_id()) {
135	printf("kmp: bad processor entry #%d, will not send IPI to myself\n", i);	135	printf("kmp: bad processor entry #%d, will not send IPI to myself\n", i);
136	continue;	136	continue;
137	}	137	}
138		138
139	/*	139	/*
140	* Prepare new GDT for CPU in question.	140	* Prepare new GDT for CPU in question.
141	*/	141	*/
142	if (!(gdt_new = (struct descriptor ) malloc(GDT_ITEMSsizeof(struct descriptor))))	142	if (!(gdt_new = (struct descriptor ) malloc(GDT_ITEMSsizeof(struct descriptor))))
143	panic("couldn't allocate memory for GDT\n");	143	panic("couldn't allocate memory for GDT\n");
144		144
145	memcpy(gdt_new, gdt, GDT_ITEMS*sizeof(struct descriptor));	145	memcpy(gdt_new, gdt, GDT_ITEMS*sizeof(struct descriptor));
146	memsetb((__address)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0);	146	memsetb((__address)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0);
147	ap_bootstrap_gdtr.base = KA2PA((__address) gdt_new);	147	ap_bootstrap_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	waitq_sleep(&ap_completion_wq);	156	waitq_sleep(&ap_completion_wq);
157	}	157	}
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	/*	163	/*
164	* Wakeup the kinit thread so that	164	* Wakeup the kinit thread so that
165	* system initialization can go on.	165	* system initialization can go on.
166	*/	166	*/
167	waitq_wakeup(&kmp_completion_wq, WAKEUP_FIRST);	167	waitq_wakeup(&kmp_completion_wq, WAKEUP_FIRST);
168	}	168	}
169		169
170	#endif /* __SMP__ */	170	#endif /* __SMP__ */
171		171

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/ia32/src/smp/smp.c @ 1770 – Rev 273 → 277