| 1 | /*
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| 2 | * Copyright (C) 2001-2004 Jakub Jermar
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | #ifndef __CPU_H__
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| 30 | #define __CPU_H__
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| 31 |
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| 32 | #include <arch/cpu.h>
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| 33 | #include <proc/scheduler.h>
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| 34 | #include <synch/spinlock.h>
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| 35 | #include <synch/waitq.h>
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| 36 | #include <arch/types.h>
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| 37 | #include <typedefs.h>
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| 38 | #include <arch/context.h>
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| 39 | #include <config.h>
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| 40 | #include <list.h>
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| 41 |
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| 42 | #define CPU_STACK_SIZE STACK_SIZE
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| 43 |
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| 44 | /** CPU structure.
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| 45 | *
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| 46 | * There is one structure like this for every processor.
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| 47 | */
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| 48 | struct cpu {
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| 49 | SPINLOCK_DECLARE(lock);
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| 50 |
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| 51 | context_t saved_context;
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| 52 |
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| 53 | volatile count_t nrdy;
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| 54 | runq_t rq[RQ_COUNT];
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| 55 | volatile count_t needs_relink;
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| 56 |
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| 57 | SPINLOCK_DECLARE(timeoutlock);
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| 58 | link_t timeout_active_head;
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| 59 |
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| 60 | #ifdef CONFIG_SMP
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| 61 | atomic_t kcpulbstarted;
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| 62 | waitq_t kcpulb_wq;
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| 63 | #endif /* CONFIG_SMP */
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| 64 |
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| 65 | /**
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| 66 | * Processor ID assigned by kernel.
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| 67 | */
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| 68 | int id;
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| 69 |
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| 70 | int active;
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| 71 | int tlb_active;
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| 72 |
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| 73 | __u16 frequency_mhz;
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| 74 | __u32 delay_loop_const;
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| 75 |
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| 76 | cpu_arch_t arch;
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| 77 |
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| 78 | thread_t *fpu_owner;
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| 79 |
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| 80 | /**
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| 81 | * Stack used by scheduler when there is no running thread.
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| 82 | */
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| 83 | __u8 *stack;
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| 84 | };
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| 85 |
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| 86 | extern cpu_t *cpus;
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| 87 |
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| 88 | extern void cpu_init(void);
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| 89 | extern void cpu_list(void);
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| 90 |
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| 91 | extern void cpu_arch_init(void);
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| 92 | extern void cpu_identify(void);
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| 93 | extern void cpu_print_report(cpu_t *m);
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| 94 |
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| 95 | #endif
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