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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 | /** @addtogroup generic |
29 | /** @addtogroup generic |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef __CPU_H__ |
35 | #ifndef __CPU_H__ |
36 | #define __CPU_H__ |
36 | #define __CPU_H__ |
37 | 37 | ||
38 | #include <arch/cpu.h> |
38 | #include <arch/cpu.h> |
39 | #include <proc/scheduler.h> |
39 | #include <proc/scheduler.h> |
40 | #include <synch/spinlock.h> |
40 | #include <synch/spinlock.h> |
41 | #include <synch/waitq.h> |
41 | #include <synch/waitq.h> |
42 | #include <arch/types.h> |
42 | #include <arch/types.h> |
43 | #include <typedefs.h> |
43 | #include <typedefs.h> |
44 | #include <arch/context.h> |
44 | #include <arch/context.h> |
45 | #include <config.h> |
45 | #include <config.h> |
46 | #include <adt/list.h> |
46 | #include <adt/list.h> |
47 | #include <mm/tlb.h> |
47 | #include <mm/tlb.h> |
48 | 48 | ||
49 | #define CPU_STACK_SIZE STACK_SIZE |
49 | #define CPU_STACK_SIZE STACK_SIZE |
50 | 50 | ||
51 | /** CPU structure. |
51 | /** CPU structure. |
52 | * |
52 | * |
53 | * There is one structure like this for every processor. |
53 | * There is one structure like this for every processor. |
54 | */ |
54 | */ |
55 | struct cpu { |
55 | struct cpu { |
56 | SPINLOCK_DECLARE(lock); |
56 | SPINLOCK_DECLARE(lock); |
57 | 57 | ||
58 | tlb_shootdown_msg_t tlb_messages[TLB_MESSAGE_QUEUE_LEN]; |
58 | tlb_shootdown_msg_t tlb_messages[TLB_MESSAGE_QUEUE_LEN]; |
59 | count_t tlb_messages_count; |
59 | count_t tlb_messages_count; |
60 | 60 | ||
61 | context_t saved_context; |
61 | context_t saved_context; |
62 | 62 | ||
63 | atomic_t nrdy; |
63 | atomic_t nrdy; |
64 | runq_t rq[RQ_COUNT]; |
64 | runq_t rq[RQ_COUNT]; |
65 | volatile count_t needs_relink; |
65 | volatile count_t needs_relink; |
66 | 66 | ||
67 | SPINLOCK_DECLARE(timeoutlock); |
67 | SPINLOCK_DECLARE(timeoutlock); |
68 | link_t timeout_active_head; |
68 | link_t timeout_active_head; |
69 | 69 | ||
70 | count_t missed_clock_ticks; /**< When system clock loses a tick, it is recorded here |
70 | count_t missed_clock_ticks; /**< When system clock loses a tick, it is recorded here |
71 | so that clock() can react. This variable is |
71 | so that clock() can react. This variable is |
72 | CPU-local and can be only accessed when interrupts |
72 | CPU-local and can be only accessed when interrupts |
73 | are disabled. */ |
73 | are disabled. */ |
74 | 74 | ||
75 | /** |
75 | /** |
76 | * Processor ID assigned by kernel. |
76 | * Processor ID assigned by kernel. |
77 | */ |
77 | */ |
78 | int id; |
78 | int id; |
79 | 79 | ||
80 | int active; |
80 | int active; |
81 | int tlb_active; |
81 | int tlb_active; |
82 | 82 | ||
83 | __u16 frequency_mhz; |
83 | uint16_t frequency_mhz; |
84 | __u32 delay_loop_const; |
84 | uint32_t delay_loop_const; |
85 | 85 | ||
86 | cpu_arch_t arch; |
86 | cpu_arch_t arch; |
87 | 87 | ||
88 | thread_t *fpu_owner; |
88 | thread_t *fpu_owner; |
89 | 89 | ||
90 | /** |
90 | /** |
91 | * Stack used by scheduler when there is no running thread. |
91 | * Stack used by scheduler when there is no running thread. |
92 | */ |
92 | */ |
93 | __u8 *stack; |
93 | uint8_t *stack; |
94 | }; |
94 | }; |
95 | 95 | ||
96 | extern cpu_t *cpus; |
96 | extern cpu_t *cpus; |
97 | 97 | ||
98 | extern void cpu_init(void); |
98 | extern void cpu_init(void); |
99 | extern void cpu_list(void); |
99 | extern void cpu_list(void); |
100 | 100 | ||
101 | extern void cpu_arch_init(void); |
101 | extern void cpu_arch_init(void); |
102 | extern void cpu_identify(void); |
102 | extern void cpu_identify(void); |
103 | extern void cpu_print_report(cpu_t *m); |
103 | extern void cpu_print_report(cpu_t *m); |
104 | 104 | ||
105 | #endif |
105 | #endif |
106 | 106 | ||
107 | /** @} |
107 | /** @} |
108 | */ |
108 | */ |
109 | 109 |