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1 | /* |
1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 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 | #ifndef __CPU_H__ |
29 | #ifndef __CPU_H__ |
30 | #define __CPU_H__ |
30 | #define __CPU_H__ |
31 | 31 | ||
32 | #include <arch/cpu.h> |
32 | #include <arch/cpu.h> |
33 | #include <proc/scheduler.h> |
33 | #include <proc/scheduler.h> |
34 | #include <synch/spinlock.h> |
34 | #include <synch/spinlock.h> |
35 | #include <synch/waitq.h> |
35 | #include <synch/waitq.h> |
36 | #include <arch/types.h> |
36 | #include <arch/types.h> |
37 | #include <typedefs.h> |
37 | #include <typedefs.h> |
38 | #include <arch/context.h> |
38 | #include <arch/context.h> |
39 | #include <config.h> |
39 | #include <config.h> |
40 | #include <list.h> |
40 | #include <list.h> |
41 | 41 | ||
42 | #define CPU_STACK_SIZE STACK_SIZE |
42 | #define CPU_STACK_SIZE STACK_SIZE |
43 | 43 | ||
- | 44 | /** CPU structure. |
|
- | 45 | * |
|
- | 46 | * There is one structure like this for every processor. |
|
- | 47 | */ |
|
44 | struct cpu { |
48 | struct cpu { |
45 | SPINLOCK_DECLARE(lock); |
49 | SPINLOCK_DECLARE(lock); |
- | 50 | ||
46 | context_t saved_context; |
51 | context_t saved_context; |
47 | 52 | ||
48 | volatile count_t nrdy; |
53 | volatile count_t nrdy; |
49 | runq_t rq[RQ_COUNT]; |
54 | runq_t rq[RQ_COUNT]; |
50 | volatile count_t needs_relink; |
55 | volatile count_t needs_relink; |
51 | 56 | ||
52 | SPINLOCK_DECLARE(timeoutlock); |
57 | SPINLOCK_DECLARE(timeoutlock); |
53 | link_t timeout_active_head; |
58 | link_t timeout_active_head; |
54 | 59 | ||
55 | #ifdef CONFIG_SMP |
60 | #ifdef CONFIG_SMP |
56 | atomic_t kcpulbstarted; |
61 | atomic_t kcpulbstarted; |
57 | waitq_t kcpulb_wq; |
62 | waitq_t kcpulb_wq; |
58 | #endif /* CONFIG_SMP */ |
63 | #endif /* CONFIG_SMP */ |
59 | 64 | ||
- | 65 | /** |
|
- | 66 | * Processor ID assigned by kernel. |
|
- | 67 | */ |
|
60 | int id; |
68 | int id; |
- | 69 | ||
61 | int active; |
70 | int active; |
62 | int tlb_active; |
71 | int tlb_active; |
63 | 72 | ||
64 | __u16 frequency_mhz; |
73 | __u16 frequency_mhz; |
65 | __u32 delay_loop_const; |
74 | __u32 delay_loop_const; |
66 | 75 | ||
67 | cpu_arch_t arch; |
76 | cpu_arch_t arch; |
68 | 77 | ||
69 | thread_t *fpu_owner; |
78 | thread_t *fpu_owner; |
70 | 79 | ||
- | 80 | /** |
|
- | 81 | * Stack used by scheduler when there is no running thread. |
|
- | 82 | */ |
|
71 | __u8 *stack; |
83 | __u8 *stack; |
72 | }; |
84 | }; |
73 | 85 | ||
74 | extern cpu_t *cpus; |
86 | extern cpu_t *cpus; |
75 | 87 | ||
76 | extern void cpu_init(void); |
88 | extern void cpu_init(void); |
77 | extern void cpu_list(void); |
89 | extern void cpu_list(void); |
78 | 90 | ||
79 | extern void cpu_arch_init(void); |
91 | extern void cpu_arch_init(void); |
80 | extern void cpu_identify(void); |
92 | extern void cpu_identify(void); |
81 | extern void cpu_print_report(cpu_t *m); |
93 | extern void cpu_print_report(cpu_t *m); |
82 | 94 | ||
83 | #endif |
95 | #endif |
84 | 96 |