WebSVN – HelenOS – Diff – /trunk/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.
 */
 
/** @addtogroup ia32   
 * @{
 */
/** @file
 */
 
#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/drivers/i8259.h>
 
#ifdef CONFIG_SMP
 
static struct smp_config_operations *ops = NULL;
 
void smp_init(void)
{
    uintptr_t l_apic_address, io_apic_address;
 
    if (acpi_madt) {
        acpi_madt_parse();
        ops = &madt_config_operations;
    }
    if (config.cpu_count == 1) {
        mps_init();
        ops = &mps_config_operations;
    }
 
    l_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_ATOMIC | FRAME_KA);
    if (!l_apic_address)
        panic("cannot allocate address for l_apic\n");
 
    io_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_ATOMIC | FRAME_KA);
    if (!io_apic_address)
        panic("cannot allocate address for io_apic\n");
 
    if (config.cpu_count > 1) {    
        page_mapping_insert(AS_KERNEL, l_apic_address, (uintptr_t) l_apic,
                  PAGE_NOT_CACHEABLE);
        page_mapping_insert(AS_KERNEL, io_apic_address, (uintptr_t) io_apic,
                  PAGE_NOT_CACHEABLE);
                 
        l_apic = (uint32_t *) l_apic_address;
        io_apic = (uint32_t *) io_apic_address;
        }
}
 
/*
 * 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);
 
    /*
     * 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()
     */
    *((uint16_t *) (PA2KA(0x467+0))) =  ((uintptr_t) ap_boot) >> 4; /* segment */
    *((uint16_t *) (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((uintptr_t)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0);
        protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor);
        protected_ap_gdtr.base = KA2PA((uintptr_t) gdt_new);
        gdtr.base = (uintptr_t) 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_FLAGS_NONE) == 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));
    }
}
 
int smp_irq_to_pin(int irq)
{
    ASSERT(ops != NULL);
    return ops->irq_to_pin(irq);
}
 
#endif /* CONFIG_SMP */
 
/** @}
 */
 

Rev 1901	Rev 2071
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	/** @addtogroup ia32	29	/** @addtogroup ia32
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <smp/smp.h>	35	#include <smp/smp.h>
36	#include <arch/smp/smp.h>	36	#include <arch/smp/smp.h>
37	#include <arch/smp/mps.h>	37	#include <arch/smp/mps.h>
38	#include <arch/smp/ap.h>	38	#include <arch/smp/ap.h>
39	#include <arch/boot/boot.h>	39	#include <arch/boot/boot.h>
40	#include <genarch/acpi/acpi.h>	40	#include <genarch/acpi/acpi.h>
41	#include <genarch/acpi/madt.h>	41	#include <genarch/acpi/madt.h>
42	#include <config.h>	42	#include <config.h>
43	#include <synch/waitq.h>	43	#include <synch/waitq.h>
44	#include <synch/synch.h>	44	#include <synch/synch.h>
45	#include <arch/pm.h>	45	#include <arch/pm.h>
46	#include <func.h>	46	#include <func.h>
47	#include <panic.h>	47	#include <panic.h>
48	#include <debug.h>	48	#include <debug.h>
49	#include <arch/asm.h>	49	#include <arch/asm.h>
50	#include <mm/frame.h>	50	#include <mm/frame.h>
51	#include <mm/page.h>	51	#include <mm/page.h>
52	#include <mm/slab.h>	52	#include <mm/slab.h>
53	#include <mm/as.h>	53	#include <mm/as.h>
54	#include <print.h>	54	#include <print.h>
55	#include <memstr.h>	55	#include <memstr.h>
56	#include <arch/drivers/i8259.h>	56	#include <arch/drivers/i8259.h>
57		57
58	#ifdef CONFIG_SMP	58	#ifdef CONFIG_SMP
59		59
60	static struct smp_config_operations *ops = NULL;	60	static struct smp_config_operations *ops = NULL;
61		61
62	void smp_init(void)	62	void smp_init(void)
63	{	63	{
64	uintptr_t l_apic_address, io_apic_address;	64	uintptr_t l_apic_address, io_apic_address;
65		65
66	if (acpi_madt) {	66	if (acpi_madt) {
67	acpi_madt_parse();	67	acpi_madt_parse();
68	ops = &madt_config_operations;	68	ops = &madt_config_operations;
69	}	69	}
70	if (config.cpu_count == 1) {	70	if (config.cpu_count == 1) {
71	mps_init();	71	mps_init();
72	ops = &mps_config_operations;	72	ops = &mps_config_operations;
73	}	73	}
74		74
75	l_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_ATOMIC \| FRAME_KA);	75	l_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_ATOMIC \| FRAME_KA);
76	if (!l_apic_address)	76	if (!l_apic_address)
77	panic("cannot allocate address for l_apic\n");	77	panic("cannot allocate address for l_apic\n");
78		78
79	io_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_ATOMIC \| FRAME_KA);	79	io_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_ATOMIC \| FRAME_KA);
80	if (!io_apic_address)	80	if (!io_apic_address)
81	panic("cannot allocate address for io_apic\n");	81	panic("cannot allocate address for io_apic\n");
82		82
83	if (config.cpu_count > 1) {	83	if (config.cpu_count > 1) {
84	page_mapping_insert(AS_KERNEL, l_apic_address, (uintptr_t) l_apic,	84	page_mapping_insert(AS_KERNEL, l_apic_address, (uintptr_t) l_apic,
85	PAGE_NOT_CACHEABLE);	85	PAGE_NOT_CACHEABLE);
86	page_mapping_insert(AS_KERNEL, io_apic_address, (uintptr_t) io_apic,	86	page_mapping_insert(AS_KERNEL, io_apic_address, (uintptr_t) io_apic,
87	PAGE_NOT_CACHEABLE);	87	PAGE_NOT_CACHEABLE);
88		88
89	l_apic = (uint32_t *) l_apic_address;	89	l_apic = (uint32_t *) l_apic_address;
90	io_apic = (uint32_t *) io_apic_address;	90	io_apic = (uint32_t *) io_apic_address;
91	}	91	}
92	}	92	}
93		93
94	/*	94	/*
95	* Kernel thread for bringing up application processors. It becomes clear	95	* Kernel thread for bringing up application processors. It becomes clear
96	* that we need an arrangement like this (AP's being initialized by a kernel	96	* that we need an arrangement like this (AP's being initialized by a kernel
97	* thread), for a thread has its dedicated stack. (The stack used during the	97	* thread), for a thread has its dedicated stack. (The stack used during the
98	* BSP initialization (prior the very first call to scheduler()) will be used	98	* BSP initialization (prior the very first call to scheduler()) will be used
99	* as an initialization stack for each AP.)	99	* as an initialization stack for each AP.)
100	*/	100	*/
101	void kmp(void *arg)	101	void kmp(void *arg)
102	{	102	{
103	int i;	103	int i;
104		104
105	ASSERT(ops != NULL);	105	ASSERT(ops != NULL);
106		106
107	/*	107	/*
108	* We need to access data in frame 0.	108	* We need to access data in frame 0.
109	* We boldly make use of kernel address space mapping.	109	* We boldly make use of kernel address space mapping.
110	*/	110	*/
111		111
112	/*	112	/*
113	* Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot()	113	* Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot()
114	*/	114	*/
115	((uint16_t ) (PA2KA(0x467+0))) = ((uintptr_t) ap_boot) >> 4; /* segment */	115	((uint16_t ) (PA2KA(0x467+0))) = ((uintptr_t) ap_boot) >> 4; /* segment */
116	((uint16_t ) (PA2KA(0x467+2))) = 0; /* offset */	116	((uint16_t ) (PA2KA(0x467+2))) = 0; /* offset */
117		117
118	/*	118	/*
119	* Save 0xa to address 0xf of the CMOS RAM.	119	* Save 0xa to address 0xf of the CMOS RAM.
120	* BIOS will not do the POST after the INIT signal.	120	* BIOS will not do the POST after the INIT signal.
121	*/	121	*/
122	outb(0x70,0xf);	122	outb(0x70,0xf);
123	outb(0x71,0xa);	123	outb(0x71,0xa);
124		124
125	pic_disable_irqs(0xffff);	125	pic_disable_irqs(0xffff);
126	apic_init();	126	apic_init();
127		127
128	for (i = 0; i < ops->cpu_count(); i++) {	128	for (i = 0; i < ops->cpu_count(); i++) {
129	struct descriptor *gdt_new;	129	struct descriptor *gdt_new;
130		130
131	/*	131	/*
132	* Skip processors marked unusable.	132	* Skip processors marked unusable.
133	*/	133	*/
134	if (!ops->cpu_enabled(i))	134	if (!ops->cpu_enabled(i))
135	continue;	135	continue;
136		136
137	/*	137	/*
138	* The bootstrap processor is already up.	138	* The bootstrap processor is already up.
139	*/	139	*/
140	if (ops->cpu_bootstrap(i))	140	if (ops->cpu_bootstrap(i))
141	continue;	141	continue;
142		142
143	if (ops->cpu_apic_id(i) == l_apic_id()) {	143	if (ops->cpu_apic_id(i) == l_apic_id()) {
144	printf("%s: bad processor entry #%d, will not send IPI to myself\n", __FUNCTION__, i);	144	printf("%s: bad processor entry #%d, will not send IPI to myself\n", __FUNCTION__, i);
145	continue;	145	continue;
146	}	146	}
147		147
148	/*	148	/*
149	* Prepare new GDT for CPU in question.	149	* Prepare new GDT for CPU in question.
150	*/	150	*/
151	if (!(gdt_new = (struct descriptor ) malloc(GDT_ITEMSsizeof(struct descriptor), FRAME_ATOMIC)))	151	if (!(gdt_new = (struct descriptor ) malloc(GDT_ITEMSsizeof(struct descriptor), FRAME_ATOMIC)))
152	panic("couldn't allocate memory for GDT\n");	152	panic("couldn't allocate memory for GDT\n");
153		153
154	memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor));	154	memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor));
155	memsetb((uintptr_t)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0);	155	memsetb((uintptr_t)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0);
156	protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor);	156	protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor);
157	protected_ap_gdtr.base = KA2PA((uintptr_t) gdt_new);	157	protected_ap_gdtr.base = KA2PA((uintptr_t) gdt_new);
158	gdtr.base = (uintptr_t) gdt_new;	158	gdtr.base = (uintptr_t) gdt_new;
159		159
160	if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) {	160	if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) {
161	/*	161	/*
162	* There may be just one AP being initialized at	162	* There may be just one AP being initialized at
163	* the time. After it comes completely up, it is	163	* the time. After it comes completely up, it is
164	* supposed to wake us up.	164	* supposed to wake us up.
165	*/	165	*/
166	if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT)	166	if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT)
167	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));	167	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));
168	} else	168	} else
169	printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i));	169	printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i));
170	}	170	}
171	}	171	}
172		172
173	int smp_irq_to_pin(int irq)	173	int smp_irq_to_pin(int irq)
174	{	174	{
175	ASSERT(ops != NULL);	175	ASSERT(ops != NULL);
176	return ops->irq_to_pin(irq);	176	return ops->irq_to_pin(irq);
177	}	177	}
178		178
179	#endif /* CONFIG_SMP */	179	#endif /* CONFIG_SMP */
180		180
181	/** @}	181	/** @}
182	*/	182	*/
183		183

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(root)/trunk/kernel/arch/ia32/src/smp/smp.c – Rev 1901 → 2071