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1 jermar 1 
/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#ifndef __CPU_H__
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#define __CPU_H__
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#include <arch/cpu.h>
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#include <proc/scheduler.h>
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#include <synch/spinlock.h>
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#include <synch/waitq.h>
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#include <arch/types.h>
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#include <typedefs.h>
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#include <arch/context.h>
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#include <config.h>
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#include <adt/list.h>
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#include <mm/tlb.h>
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#define CPU_STACK_SIZE  STACK_SIZE
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/** CPU structure.
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 *
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 * There is one structure like this for every processor.
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 */
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struct cpu {
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    SPINLOCK_DECLARE(lock);
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    tlb_shootdown_msg_t tlb_messages[TLB_MESSAGE_QUEUE_LEN];
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    count_t tlb_messages_count;
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    context_t saved_context;
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    atomic_t nrdy;
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    runq_t rq[RQ_COUNT];
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    volatile count_t needs_relink;
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    SPINLOCK_DECLARE(timeoutlock);
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    link_t timeout_active_head;
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    count_t missed_clock_ticks; /**< When system clock loses a tick, it is recorded here
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                         so that clock() can react. This variable is
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                         CPU-local and can be only accessed when interrupts
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                         are disabled. */
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    /**
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     * Processor ID assigned by kernel.
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     */
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    int id;
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    int active;
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    int tlb_active;
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    __u16 frequency_mhz;
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    __u32 delay_loop_const;
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    cpu_arch_t arch;
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    thread_t *fpu_owner;
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    /**
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     * Stack used by scheduler when there is no running thread.
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     */
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    __u8 *stack;
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};
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extern cpu_t *cpus;
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extern void cpu_init(void);
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extern void cpu_list(void);
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extern void cpu_arch_init(void);
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extern void cpu_identify(void);
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extern void cpu_print_report(cpu_t *m);
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#endif