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