WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia32xen/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 ia32xen
 * @{
 */
/** @file
 */
 
#include <smp/smp.h>
#include <arch/smp/smp.h>
#include <arch/smp/mps.h>
#include <arch/smp/ap.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>
 
#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);
 
    waitq_initialize(&ap_completion_wq);
 
    /*
     * We need to access data in frame 0.
     * We boldly make use of kernel address space mapping.
     */
 
    /*
     * 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);
        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 2071	Rev 2089
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 ia32xen	29	/** @addtogroup ia32xen
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>	-
40	#include <genarch/acpi/acpi.h>	39	#include <genarch/acpi/acpi.h>
41	#include <genarch/acpi/madt.h>	40	#include <genarch/acpi/madt.h>
42	#include <config.h>	41	#include <config.h>
43	#include <synch/waitq.h>	42	#include <synch/waitq.h>
44	#include <synch/synch.h>	43	#include <synch/synch.h>
45	#include <arch/pm.h>	44	#include <arch/pm.h>
46	#include <func.h>	45	#include <func.h>
47	#include <panic.h>	46	#include <panic.h>
48	#include <debug.h>	47	#include <debug.h>
49	#include <arch/asm.h>	48	#include <arch/asm.h>
50	#include <mm/frame.h>	49	#include <mm/frame.h>
51	#include <mm/page.h>	50	#include <mm/page.h>
52	#include <mm/slab.h>	51	#include <mm/slab.h>
53	#include <mm/as.h>	52	#include <mm/as.h>
54	#include <print.h>	53	#include <print.h>
55	#include <memstr.h>	54	#include <memstr.h>
56		55
57	#ifdef CONFIG_SMP	56	#ifdef CONFIG_SMP
58		57
59	static struct smp_config_operations *ops = NULL;	58	static struct smp_config_operations *ops = NULL;
60		59
61	void smp_init(void)	60	void smp_init(void)
62	{	61	{
63	uintptr_t l_apic_address, io_apic_address;	62	uintptr_t l_apic_address, io_apic_address;
64		63
65	if (acpi_madt) {	64	if (acpi_madt) {
66	acpi_madt_parse();	65	acpi_madt_parse();
67	ops = &madt_config_operations;	66	ops = &madt_config_operations;
68	}	67	}
69	if (config.cpu_count == 1) {	68	if (config.cpu_count == 1) {
70	mps_init();	69	mps_init();
71	ops = &mps_config_operations;	70	ops = &mps_config_operations;
72	}	71	}
73		72
74	l_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_ATOMIC \| FRAME_KA);	73	l_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_ATOMIC \| FRAME_KA);
75	if (!l_apic_address)	74	if (!l_apic_address)
76	panic("cannot allocate address for l_apic\n");	75	panic("cannot allocate address for l_apic\n");
77		76
78	io_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_ATOMIC \| FRAME_KA);	77	io_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, FRAME_ATOMIC \| FRAME_KA);
79	if (!io_apic_address)	78	if (!io_apic_address)
80	panic("cannot allocate address for io_apic\n");	79	panic("cannot allocate address for io_apic\n");
81		80
82	if (config.cpu_count > 1) {	81	if (config.cpu_count > 1) {
83	page_mapping_insert(AS_KERNEL, l_apic_address, (uintptr_t) l_apic,	82	page_mapping_insert(AS_KERNEL, l_apic_address, (uintptr_t) l_apic,
84	PAGE_NOT_CACHEABLE);	83	PAGE_NOT_CACHEABLE);
85	page_mapping_insert(AS_KERNEL, io_apic_address, (uintptr_t) io_apic,	84	page_mapping_insert(AS_KERNEL, io_apic_address, (uintptr_t) io_apic,
86	PAGE_NOT_CACHEABLE);	85	PAGE_NOT_CACHEABLE);
87		86
88	l_apic = (uint32_t *) l_apic_address;	87	l_apic = (uint32_t *) l_apic_address;
89	io_apic = (uint32_t *) io_apic_address;	88	io_apic = (uint32_t *) io_apic_address;
90	}	89	}
91	}	90	}
92		91
93	/*	92	/*
94	* Kernel thread for bringing up application processors. It becomes clear	93	* Kernel thread for bringing up application processors. It becomes clear
95	* that we need an arrangement like this (AP's being initialized by a kernel	94	* that we need an arrangement like this (AP's being initialized by a kernel
96	* thread), for a thread has its dedicated stack. (The stack used during the	95	* thread), for a thread has its dedicated stack. (The stack used during the
97	* BSP initialization (prior the very first call to scheduler()) will be used	96	* BSP initialization (prior the very first call to scheduler()) will be used
98	* as an initialization stack for each AP.)	97	* as an initialization stack for each AP.)
99	*/	98	*/
100	void kmp(void *arg)	99	void kmp(void *arg)
101	{	100	{
102	int i;	101	int i;
103		102
104	ASSERT(ops != NULL);	103	ASSERT(ops != NULL);
105		104
106	waitq_initialize(&ap_completion_wq);	105	waitq_initialize(&ap_completion_wq);
107		106
108	/*	107	/*
109	* We need to access data in frame 0.	108	* We need to access data in frame 0.
110	* We boldly make use of kernel address space mapping.	109	* We boldly make use of kernel address space mapping.
111	*/	110	*/
112		111
113	/*	112	/*
114	* Save 0xa to address 0xf of the CMOS RAM.	113	* Save 0xa to address 0xf of the CMOS RAM.
115	* BIOS will not do the POST after the INIT signal.	114	* BIOS will not do the POST after the INIT signal.
116	*/	115	*/
117	outb(0x70,0xf);	116	outb(0x70,0xf);
118	outb(0x71,0xa);	117	outb(0x71,0xa);
119		118
120	// pic_disable_irqs(0xffff);	119	// pic_disable_irqs(0xffff);
121	apic_init();	120	apic_init();
122		121
123	for (i = 0; i < ops->cpu_count(); i++) {	122	for (i = 0; i < ops->cpu_count(); i++) {
124	struct descriptor *gdt_new;	123	struct descriptor *gdt_new;
125		124
126	/*	125	/*
127	* Skip processors marked unusable.	126	* Skip processors marked unusable.
128	*/	127	*/
129	if (!ops->cpu_enabled(i))	128	if (!ops->cpu_enabled(i))
130	continue;	129	continue;
131		130
132	/*	131	/*
133	* The bootstrap processor is already up.	132	* The bootstrap processor is already up.
134	*/	133	*/
135	if (ops->cpu_bootstrap(i))	134	if (ops->cpu_bootstrap(i))
136	continue;	135	continue;
137		136
138	if (ops->cpu_apic_id(i) == l_apic_id()) {	137	if (ops->cpu_apic_id(i) == l_apic_id()) {
139	printf("%s: bad processor entry #%d, will not send IPI to myself\n", __FUNCTION__, i);	138	printf("%s: bad processor entry #%d, will not send IPI to myself\n", __FUNCTION__, i);
140	continue;	139	continue;
141	}	140	}
142		141
143	/*	142	/*
144	* Prepare new GDT for CPU in question.	143	* Prepare new GDT for CPU in question.
145	*/	144	*/
146	if (!(gdt_new = (struct descriptor ) malloc(GDT_ITEMSsizeof(struct descriptor), FRAME_ATOMIC)))	145	if (!(gdt_new = (struct descriptor ) malloc(GDT_ITEMSsizeof(struct descriptor), FRAME_ATOMIC)))
147	panic("couldn't allocate memory for GDT\n");	146	panic("couldn't allocate memory for GDT\n");
148		147
149	memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor));	148	memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor));
150	memsetb((uintptr_t)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0);	149	memsetb((uintptr_t)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0);
151	gdtr.base = (uintptr_t) gdt_new;	150	gdtr.base = (uintptr_t) gdt_new;
152		151
153	if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) {	152	if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) {
154	/*	153	/*
155	* There may be just one AP being initialized at	154	* There may be just one AP being initialized at
156	* the time. After it comes completely up, it is	155	* the time. After it comes completely up, it is
157	* supposed to wake us up.	156	* supposed to wake us up.
158	*/	157	*/
159	if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT)	158	if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT)
160	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));	159	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));
161	} else	160	} else
162	printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i));	161	printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i));
163	}	162	}
164	}	163	}
165		164
166	int smp_irq_to_pin(int irq)	165	int smp_irq_to_pin(int irq)
167	{	166	{
168	ASSERT(ops != NULL);	167	ASSERT(ops != NULL);
169	return ops->irq_to_pin(irq);	168	return ops->irq_to_pin(irq);
170	}	169	}
171		170
172	#endif /* CONFIG_SMP */	171	#endif /* CONFIG_SMP */
173		172
174	/** @}	173	/** @}
175	*/	174	*/
176		175

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ia32xen/src/smp/smp.c – Rev 2071 → 2089