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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Jakub Jermar |
2 | * Copyright (c) 2008 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, |
75 | l_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, |
76 | FRAME_ATOMIC | FRAME_KA); |
76 | FRAME_ATOMIC | FRAME_KA); |
77 | if (!l_apic_address) |
77 | if (!l_apic_address) |
78 | panic("cannot allocate address for l_apic\n"); |
78 | panic("cannot allocate address for l_apic\n"); |
79 | 79 | ||
80 | io_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, |
80 | io_apic_address = (uintptr_t) frame_alloc(ONE_FRAME, |
81 | FRAME_ATOMIC | FRAME_KA); |
81 | FRAME_ATOMIC | FRAME_KA); |
82 | if (!io_apic_address) |
82 | if (!io_apic_address) |
83 | panic("cannot allocate address for io_apic\n"); |
83 | panic("cannot allocate address for io_apic\n"); |
84 | 84 | ||
85 | if (config.cpu_count > 1) { |
85 | if (config.cpu_count > 1) { |
86 | page_mapping_insert(AS_KERNEL, l_apic_address, |
86 | page_mapping_insert(AS_KERNEL, l_apic_address, |
87 | (uintptr_t) l_apic, PAGE_NOT_CACHEABLE | PAGE_WRITE); |
87 | (uintptr_t) l_apic, PAGE_NOT_CACHEABLE | PAGE_WRITE); |
88 | page_mapping_insert(AS_KERNEL, io_apic_address, |
88 | page_mapping_insert(AS_KERNEL, io_apic_address, |
89 | (uintptr_t) io_apic, PAGE_NOT_CACHEABLE | PAGE_WRITE); |
89 | (uintptr_t) io_apic, PAGE_NOT_CACHEABLE | PAGE_WRITE); |
90 | 90 | ||
91 | l_apic = (uint32_t *) l_apic_address; |
91 | l_apic = (uint32_t *) l_apic_address; |
92 | io_apic = (uint32_t *) io_apic_address; |
92 | io_apic = (uint32_t *) io_apic_address; |
93 | } |
93 | } |
94 | } |
94 | } |
95 | 95 | ||
96 | /* |
96 | /* |
97 | * Kernel thread for bringing up application processors. It becomes clear |
97 | * Kernel thread for bringing up application processors. It becomes clear |
98 | * that we need an arrangement like this (AP's being initialized by a kernel |
98 | * that we need an arrangement like this (AP's being initialized by a kernel |
99 | * thread), for a thread has its dedicated stack. (The stack used during the |
99 | * thread), for a thread has its dedicated stack. (The stack used during the |
100 | * BSP initialization (prior the very first call to scheduler()) will be used |
100 | * BSP initialization (prior the very first call to scheduler()) will be used |
101 | * as an initialization stack for each AP.) |
101 | * as an initialization stack for each AP.) |
102 | */ |
102 | */ |
103 | void kmp(void *arg __attribute__((unused))) |
103 | void kmp(void *arg __attribute__((unused))) |
104 | { |
104 | { |
105 | unsigned int i; |
105 | unsigned int i; |
106 | 106 | ||
107 | ASSERT(ops != NULL); |
107 | ASSERT(ops != NULL); |
108 | 108 | ||
109 | /* |
109 | /* |
110 | * We need to access data in frame 0. |
110 | * We need to access data in frame 0. |
111 | * We boldly make use of kernel address space mapping. |
111 | * We boldly make use of kernel address space mapping. |
112 | */ |
112 | */ |
113 | 113 | ||
114 | /* |
114 | /* |
115 | * Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot() |
115 | * Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot() |
116 | */ |
116 | */ |
117 | *((uint16_t *) (PA2KA(0x467 + 0))) = |
117 | *((uint16_t *) (PA2KA(0x467 + 0))) = |
118 | (uint16_t) (((uintptr_t) ap_boot) >> 4); /* segment */ |
118 | (uint16_t) (((uintptr_t) ap_boot) >> 4); /* segment */ |
119 | *((uint16_t *) (PA2KA(0x467 + 2))) = 0; /* offset */ |
119 | *((uint16_t *) (PA2KA(0x467 + 2))) = 0; /* offset */ |
120 | 120 | ||
121 | /* |
121 | /* |
122 | * Save 0xa to address 0xf of the CMOS RAM. |
122 | * Save 0xa to address 0xf of the CMOS RAM. |
123 | * BIOS will not do the POST after the INIT signal. |
123 | * BIOS will not do the POST after the INIT signal. |
124 | */ |
124 | */ |
125 | outb(0x70, 0xf); |
125 | outb(0x70, 0xf); |
126 | outb(0x71, 0xa); |
126 | outb(0x71, 0xa); |
127 | 127 | ||
128 | pic_disable_irqs(0xffff); |
128 | pic_disable_irqs(0xffff); |
129 | apic_init(); |
129 | apic_init(); |
130 | 130 | ||
131 | uint8_t apic = l_apic_id(); |
131 | uint8_t apic = l_apic_id(); |
132 | 132 | ||
133 | for (i = 0; i < ops->cpu_count(); i++) { |
133 | for (i = 0; i < ops->cpu_count(); i++) { |
134 | struct descriptor *gdt_new; |
134 | struct descriptor *gdt_new; |
135 | 135 | ||
136 | /* |
136 | /* |
137 | * Skip processors marked unusable. |
137 | * Skip processors marked unusable. |
138 | */ |
138 | */ |
139 | if (!ops->cpu_enabled(i)) |
139 | if (!ops->cpu_enabled(i)) |
140 | continue; |
140 | continue; |
141 | 141 | ||
142 | /* |
142 | /* |
143 | * The bootstrap processor is already up. |
143 | * The bootstrap processor is already up. |
144 | */ |
144 | */ |
145 | if (ops->cpu_bootstrap(i)) |
145 | if (ops->cpu_bootstrap(i)) |
146 | continue; |
146 | continue; |
147 | 147 | ||
148 | if (ops->cpu_apic_id(i) == apic) { |
148 | if (ops->cpu_apic_id(i) == apic) { |
149 | printf("%s: bad processor entry #%u, will not send IPI " |
149 | printf("%s: bad processor entry #%u, will not send IPI " |
150 | "to myself\n", __FUNCTION__, i); |
150 | "to myself\n", __FUNCTION__, i); |
151 | continue; |
151 | continue; |
152 | } |
152 | } |
153 | 153 | ||
154 | /* |
154 | /* |
155 | * Prepare new GDT for CPU in question. |
155 | * Prepare new GDT for CPU in question. |
156 | */ |
156 | */ |
157 | gdt_new = (struct descriptor *) malloc(GDT_ITEMS * |
157 | gdt_new = (struct descriptor *) malloc(GDT_ITEMS * |
158 | sizeof(struct descriptor), FRAME_ATOMIC); |
158 | sizeof(struct descriptor), FRAME_ATOMIC); |
159 | if (!gdt_new) |
159 | if (!gdt_new) |
160 | panic("couldn't allocate memory for GDT\n"); |
160 | panic("couldn't allocate memory for GDT\n"); |
161 | 161 | ||
162 | memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor)); |
162 | memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor)); |
163 | memsetb((uintptr_t)(&gdt_new[TSS_DES]), |
- | |
164 | sizeof(struct descriptor), 0); |
163 | memsetb(&gdt_new[TSS_DES], sizeof(struct descriptor), 0); |
165 | protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor); |
164 | protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor); |
166 | protected_ap_gdtr.base = KA2PA((uintptr_t) gdt_new); |
165 | protected_ap_gdtr.base = KA2PA((uintptr_t) gdt_new); |
167 | gdtr.base = (uintptr_t) gdt_new; |
166 | gdtr.base = (uintptr_t) gdt_new; |
168 | 167 | ||
169 | if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) { |
168 | if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) { |
170 | /* |
169 | /* |
171 | * There may be just one AP being initialized at |
170 | * There may be just one AP being initialized at |
172 | * the time. After it comes completely up, it is |
171 | * the time. After it comes completely up, it is |
173 | * supposed to wake us up. |
172 | * supposed to wake us up. |
174 | */ |
173 | */ |
175 | if (waitq_sleep_timeout(&ap_completion_wq, 1000000, |
174 | if (waitq_sleep_timeout(&ap_completion_wq, 1000000, |
176 | SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT) { |
175 | SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT) { |
177 | unsigned int cpu = (config.cpu_active > i) ? |
176 | unsigned int cpu = (config.cpu_active > i) ? |
178 | config.cpu_active : i; |
177 | config.cpu_active : i; |
179 | printf("%s: waiting for cpu%u (APIC ID = %d) " |
178 | printf("%s: waiting for cpu%u (APIC ID = %d) " |
180 | "timed out\n", __FUNCTION__, cpu, |
179 | "timed out\n", __FUNCTION__, cpu, |
181 | ops->cpu_apic_id(i)); |
180 | ops->cpu_apic_id(i)); |
182 | } |
181 | } |
183 | } else |
182 | } else |
184 | printf("INIT IPI for l_apic%d failed\n", |
183 | printf("INIT IPI for l_apic%d failed\n", |
185 | ops->cpu_apic_id(i)); |
184 | ops->cpu_apic_id(i)); |
186 | } |
185 | } |
187 | } |
186 | } |
188 | 187 | ||
189 | int smp_irq_to_pin(unsigned int irq) |
188 | int smp_irq_to_pin(unsigned int irq) |
190 | { |
189 | { |
191 | ASSERT(ops != NULL); |
190 | ASSERT(ops != NULL); |
192 | return ops->irq_to_pin(irq); |
191 | return ops->irq_to_pin(irq); |
193 | } |
192 | } |
194 | 193 | ||
195 | #endif /* CONFIG_SMP */ |
194 | #endif /* CONFIG_SMP */ |
196 | 195 | ||
197 | /** @} |
196 | /** @} |
198 | */ |
197 | */ |
199 | 198 |