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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 | PAGE_WRITE); |
85 | PAGE_NOT_CACHEABLE | PAGE_WRITE); |
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 | PAGE_WRITE); |
87 | PAGE_NOT_CACHEABLE | PAGE_WRITE); |
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 __attribute__((unused))) |
102 | { |
102 | { |
103 | unsigned int i; |
103 | unsigned 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))) = (uint16_t) (((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 | ||
- | 128 | uint8_t apic = l_apic_id(); |
|
127 | 129 | ||
128 | for (i = 0; i < ops->cpu_count(); i++) { |
130 | for (i = 0; i < ops->cpu_count(); i++) { |
129 | struct descriptor *gdt_new; |
131 | struct descriptor *gdt_new; |
130 | 132 | ||
131 | /* |
133 | /* |
132 | * Skip processors marked unusable. |
134 | * Skip processors marked unusable. |
133 | */ |
135 | */ |
134 | if (!ops->cpu_enabled(i)) |
136 | if (!ops->cpu_enabled(i)) |
135 | continue; |
137 | continue; |
136 | 138 | ||
137 | /* |
139 | /* |
138 | * The bootstrap processor is already up. |
140 | * The bootstrap processor is already up. |
139 | */ |
141 | */ |
140 | if (ops->cpu_bootstrap(i)) |
142 | if (ops->cpu_bootstrap(i)) |
141 | continue; |
143 | continue; |
142 | 144 | ||
143 | if (ops->cpu_apic_id(i) == l_apic_id()) { |
145 | if (ops->cpu_apic_id(i) == apic) { |
144 | printf("%s: bad processor entry #%d, will not send IPI to myself\n", __FUNCTION__, i); |
146 | printf("%s: bad processor entry #%u, will not send IPI to myself\n", __FUNCTION__, i); |
145 | continue; |
147 | continue; |
146 | } |
148 | } |
147 | 149 | ||
148 | /* |
150 | /* |
149 | * Prepare new GDT for CPU in question. |
151 | * Prepare new GDT for CPU in question. |
150 | */ |
152 | */ |
151 | if (!(gdt_new = (struct descriptor *) malloc(GDT_ITEMS*sizeof(struct descriptor), FRAME_ATOMIC))) |
153 | if (!(gdt_new = (struct descriptor *) malloc(GDT_ITEMS * sizeof(struct descriptor), FRAME_ATOMIC))) |
152 | panic("couldn't allocate memory for GDT\n"); |
154 | panic("couldn't allocate memory for GDT\n"); |
153 | 155 | ||
154 | memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor)); |
156 | memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor)); |
155 | memsetb((uintptr_t)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0); |
157 | memsetb((uintptr_t)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0); |
156 | protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor); |
158 | protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor); |
157 | protected_ap_gdtr.base = KA2PA((uintptr_t) gdt_new); |
159 | protected_ap_gdtr.base = KA2PA((uintptr_t) gdt_new); |
158 | gdtr.base = (uintptr_t) gdt_new; |
160 | gdtr.base = (uintptr_t) gdt_new; |
159 | 161 | ||
160 | if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) { |
162 | if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) { |
161 | /* |
163 | /* |
162 | * There may be just one AP being initialized at |
164 | * There may be just one AP being initialized at |
163 | * the time. After it comes completely up, it is |
165 | * the time. After it comes completely up, it is |
164 | * supposed to wake us up. |
166 | * supposed to wake us up. |
165 | */ |
167 | */ |
166 | if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT) |
168 | if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT) { |
- | 169 | unsigned int cpu = (config.cpu_active > i) ? config.cpu_active : 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)); |
170 | printf("%s: waiting for cpu%u (APIC ID = %d) timed out\n", __FUNCTION__, cpu, ops->cpu_apic_id(i)); |
- | 171 | } |
|
168 | } else |
172 | } else |
169 | printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i)); |
173 | printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i)); |
170 | } |
174 | } |
171 | } |
175 | } |
172 | 176 | ||
173 | int smp_irq_to_pin(unsigned int irq) |
177 | int smp_irq_to_pin(unsigned int irq) |
174 | { |
178 | { |
175 | ASSERT(ops != NULL); |
179 | ASSERT(ops != NULL); |
176 | return ops->irq_to_pin(irq); |
180 | return ops->irq_to_pin(irq); |
177 | } |
181 | } |
178 | 182 | ||
179 | #endif /* CONFIG_SMP */ |
183 | #endif /* CONFIG_SMP */ |
180 | 184 | ||
181 | /** @} |
185 | /** @} |
182 | */ |
186 | */ |
183 | 187 |