Rev 1502 | Rev 1702 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 1502 | Rev 1576 | ||
---|---|---|---|
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/boot/boot.h> |
33 | #include <arch/boot/boot.h> |
34 | #include <genarch/acpi/acpi.h> |
34 | #include <genarch/acpi/acpi.h> |
35 | #include <genarch/acpi/madt.h> |
35 | #include <genarch/acpi/madt.h> |
36 | #include <config.h> |
36 | #include <config.h> |
37 | #include <synch/waitq.h> |
37 | #include <synch/waitq.h> |
38 | #include <synch/synch.h> |
38 | #include <synch/synch.h> |
39 | #include <arch/pm.h> |
39 | #include <arch/pm.h> |
40 | #include <func.h> |
40 | #include <func.h> |
41 | #include <panic.h> |
41 | #include <panic.h> |
42 | #include <debug.h> |
42 | #include <debug.h> |
43 | #include <arch/asm.h> |
43 | #include <arch/asm.h> |
44 | #include <mm/frame.h> |
44 | #include <mm/frame.h> |
45 | #include <mm/page.h> |
45 | #include <mm/page.h> |
46 | #include <mm/slab.h> |
46 | #include <mm/slab.h> |
47 | #include <mm/as.h> |
47 | #include <mm/as.h> |
48 | #include <print.h> |
48 | #include <print.h> |
49 | #include <memstr.h> |
49 | #include <memstr.h> |
50 | #include <arch/drivers/i8259.h> |
50 | #include <arch/drivers/i8259.h> |
51 | 51 | ||
52 | #ifdef CONFIG_SMP |
52 | #ifdef CONFIG_SMP |
53 | 53 | ||
54 | static struct smp_config_operations *ops = NULL; |
54 | static struct smp_config_operations *ops = NULL; |
55 | 55 | ||
56 | void smp_init(void) |
56 | void smp_init(void) |
57 | { |
57 | { |
58 | int status; |
58 | int status; |
59 | __address l_apic_address, io_apic_address; |
59 | __address l_apic_address, io_apic_address; |
60 | 60 | ||
61 | if (acpi_madt) { |
61 | if (acpi_madt) { |
62 | acpi_madt_parse(); |
62 | acpi_madt_parse(); |
63 | ops = &madt_config_operations; |
63 | ops = &madt_config_operations; |
64 | } |
64 | } |
65 | if (config.cpu_count == 1) { |
65 | if (config.cpu_count == 1) { |
66 | mps_init(); |
66 | mps_init(); |
67 | ops = &mps_config_operations; |
67 | ops = &mps_config_operations; |
68 | } |
68 | } |
69 | 69 | ||
70 | l_apic_address = PA2KA(PFN2ADDR(frame_alloc_rc(ONE_FRAME, FRAME_ATOMIC | FRAME_KA, &status))); |
70 | l_apic_address = PA2KA(PFN2ADDR(frame_alloc_rc(ONE_FRAME, FRAME_ATOMIC | FRAME_KA, &status))); |
71 | if (status != FRAME_OK) |
71 | if (status != FRAME_OK) |
72 | panic("cannot allocate address for l_apic\n"); |
72 | panic("cannot allocate address for l_apic\n"); |
73 | 73 | ||
74 | io_apic_address = PA2KA(PFN2ADDR(frame_alloc_rc(ONE_FRAME, FRAME_ATOMIC | FRAME_KA, &status))); |
74 | io_apic_address = PA2KA(PFN2ADDR(frame_alloc_rc(ONE_FRAME, FRAME_ATOMIC | FRAME_KA, &status))); |
75 | if (status != FRAME_OK) |
75 | if (status != FRAME_OK) |
76 | panic("cannot allocate address for io_apic\n"); |
76 | panic("cannot allocate address for io_apic\n"); |
77 | 77 | ||
78 | if (config.cpu_count > 1) { |
78 | if (config.cpu_count > 1) { |
79 | page_mapping_insert(AS_KERNEL, l_apic_address, (__address) l_apic, |
79 | page_mapping_insert(AS_KERNEL, l_apic_address, (__address) l_apic, |
80 | PAGE_NOT_CACHEABLE); |
80 | PAGE_NOT_CACHEABLE); |
81 | page_mapping_insert(AS_KERNEL, io_apic_address, (__address) io_apic, |
81 | page_mapping_insert(AS_KERNEL, io_apic_address, (__address) io_apic, |
82 | PAGE_NOT_CACHEABLE); |
82 | PAGE_NOT_CACHEABLE); |
83 | 83 | ||
84 | l_apic = (__u32 *) l_apic_address; |
84 | l_apic = (__u32 *) l_apic_address; |
85 | io_apic = (__u32 *) io_apic_address; |
85 | io_apic = (__u32 *) io_apic_address; |
86 | } |
86 | } |
87 | - | ||
88 | /* |
- | |
89 | * Must be initialized outside the kmp thread, since it is waited |
- | |
90 | * on before the kmp thread is created. |
- | |
91 | */ |
- | |
92 | waitq_initialize(&kmp_completion_wq); |
- | |
93 | - | ||
94 | } |
87 | } |
95 | 88 | ||
96 | /* |
89 | /* |
97 | * Kernel thread for bringing up application processors. It becomes clear |
90 | * 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 |
91 | * 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 |
92 | * 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 |
93 | * BSP initialization (prior the very first call to scheduler()) will be used |
101 | * as an initialization stack for each AP.) |
94 | * as an initialization stack for each AP.) |
102 | */ |
95 | */ |
103 | void kmp(void *arg) |
96 | void kmp(void *arg) |
104 | { |
97 | { |
105 | int i; |
98 | int i; |
106 | 99 | ||
107 | ASSERT(ops != NULL); |
100 | ASSERT(ops != NULL); |
108 | 101 | ||
109 | waitq_initialize(&ap_completion_wq); |
102 | waitq_initialize(&ap_completion_wq); |
110 | 103 | ||
111 | /* |
104 | /* |
112 | * We need to access data in frame 0. |
105 | * We need to access data in frame 0. |
113 | * We boldly make use of kernel address space mapping. |
106 | * We boldly make use of kernel address space mapping. |
114 | */ |
107 | */ |
115 | 108 | ||
116 | /* |
109 | /* |
117 | * Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot() |
110 | * Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot() |
118 | */ |
111 | */ |
119 | *((__u16 *) (PA2KA(0x467+0))) = ((__address) ap_boot) >> 4; /* segment */ |
112 | *((__u16 *) (PA2KA(0x467+0))) = ((__address) ap_boot) >> 4; /* segment */ |
120 | *((__u16 *) (PA2KA(0x467+2))) = 0; /* offset */ |
113 | *((__u16 *) (PA2KA(0x467+2))) = 0; /* offset */ |
121 | 114 | ||
122 | /* |
115 | /* |
123 | * Save 0xa to address 0xf of the CMOS RAM. |
116 | * Save 0xa to address 0xf of the CMOS RAM. |
124 | * BIOS will not do the POST after the INIT signal. |
117 | * BIOS will not do the POST after the INIT signal. |
125 | */ |
118 | */ |
126 | outb(0x70,0xf); |
119 | outb(0x70,0xf); |
127 | outb(0x71,0xa); |
120 | outb(0x71,0xa); |
128 | 121 | ||
129 | pic_disable_irqs(0xffff); |
122 | pic_disable_irqs(0xffff); |
130 | apic_init(); |
123 | apic_init(); |
131 | 124 | ||
132 | for (i = 0; i < ops->cpu_count(); i++) { |
125 | for (i = 0; i < ops->cpu_count(); i++) { |
133 | struct descriptor *gdt_new; |
126 | struct descriptor *gdt_new; |
134 | 127 | ||
135 | /* |
128 | /* |
136 | * Skip processors marked unusable. |
129 | * Skip processors marked unusable. |
137 | */ |
130 | */ |
138 | if (!ops->cpu_enabled(i)) |
131 | if (!ops->cpu_enabled(i)) |
139 | continue; |
132 | continue; |
140 | 133 | ||
141 | /* |
134 | /* |
142 | * The bootstrap processor is already up. |
135 | * The bootstrap processor is already up. |
143 | */ |
136 | */ |
144 | if (ops->cpu_bootstrap(i)) |
137 | if (ops->cpu_bootstrap(i)) |
145 | continue; |
138 | continue; |
146 | 139 | ||
147 | if (ops->cpu_apic_id(i) == l_apic_id()) { |
140 | if (ops->cpu_apic_id(i) == l_apic_id()) { |
148 | printf("%s: bad processor entry #%d, will not send IPI to myself\n", __FUNCTION__, i); |
141 | printf("%s: bad processor entry #%d, will not send IPI to myself\n", __FUNCTION__, i); |
149 | continue; |
142 | continue; |
150 | } |
143 | } |
151 | 144 | ||
152 | /* |
145 | /* |
153 | * Prepare new GDT for CPU in question. |
146 | * Prepare new GDT for CPU in question. |
154 | */ |
147 | */ |
155 | if (!(gdt_new = (struct descriptor *) malloc(GDT_ITEMS*sizeof(struct descriptor), FRAME_ATOMIC))) |
148 | if (!(gdt_new = (struct descriptor *) malloc(GDT_ITEMS*sizeof(struct descriptor), FRAME_ATOMIC))) |
156 | panic("couldn't allocate memory for GDT\n"); |
149 | panic("couldn't allocate memory for GDT\n"); |
157 | 150 | ||
158 | memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor)); |
151 | memcpy(gdt_new, gdt, GDT_ITEMS * sizeof(struct descriptor)); |
159 | memsetb((__address)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0); |
152 | memsetb((__address)(&gdt_new[TSS_DES]), sizeof(struct descriptor), 0); |
160 | protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor); |
153 | protected_ap_gdtr.limit = GDT_ITEMS * sizeof(struct descriptor); |
161 | protected_ap_gdtr.base = KA2PA((__address) gdt_new); |
154 | protected_ap_gdtr.base = KA2PA((__address) gdt_new); |
162 | gdtr.base = (__address) gdt_new; |
155 | gdtr.base = (__address) gdt_new; |
163 | 156 | ||
164 | if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) { |
157 | if (l_apic_send_init_ipi(ops->cpu_apic_id(i))) { |
165 | /* |
158 | /* |
166 | * There may be just one AP being initialized at |
159 | * There may be just one AP being initialized at |
167 | * the time. After it comes completely up, it is |
160 | * the time. After it comes completely up, it is |
168 | * supposed to wake us up. |
161 | * supposed to wake us up. |
169 | */ |
162 | */ |
170 | if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT) |
163 | if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT) |
171 | 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)); |
164 | 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)); |
172 | } else |
165 | } else |
173 | printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i)); |
166 | printf("INIT IPI for l_apic%d failed\n", ops->cpu_apic_id(i)); |
174 | } |
167 | } |
175 | - | ||
176 | /* |
- | |
177 | * Wakeup the kinit thread so that |
- | |
178 | * system initialization can go on. |
- | |
179 | */ |
- | |
180 | waitq_wakeup(&kmp_completion_wq, WAKEUP_FIRST); |
- | |
181 | } |
168 | } |
182 | 169 | ||
183 | int smp_irq_to_pin(int irq) |
170 | int smp_irq_to_pin(int irq) |
184 | { |
171 | { |
185 | ASSERT(ops != NULL); |
172 | ASSERT(ops != NULL); |
186 | return ops->irq_to_pin(irq); |
173 | return ops->irq_to_pin(irq); |
187 | } |
174 | } |
188 | 175 | ||
189 | #endif /* CONFIG_SMP */ |
176 | #endif /* CONFIG_SMP */ |
190 | 177 |