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  1. /*
  2.  * Copyright (C) 2001-2004 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  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
  15.  *   derived from this software without specific prior written permission.
  16.  *
  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
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  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
  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
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #ifndef __CPU_H__
  30. #define __CPU_H__
  31.  
  32. #include <arch/cpu.h>
  33. #include <proc/scheduler.h>
  34. #include <synch/spinlock.h>
  35. #include <synch/waitq.h>
  36. #include <arch/types.h>
  37. #include <typedefs.h>
  38. #include <arch/context.h>
  39. #include <config.h>
  40. #include <list.h>
  41.  
  42. #define CPU_STACK_SIZE  STACK_SIZE
  43.  
  44. /** CPU structure.
  45.  *
  46.  * There is one structure like this for every processor.
  47.  */
  48. struct cpu {
  49.     SPINLOCK_DECLARE(lock);
  50.  
  51.     context_t saved_context;
  52.  
  53.     volatile count_t nrdy;
  54.     runq_t rq[RQ_COUNT];
  55.     volatile count_t needs_relink;
  56.  
  57.     SPINLOCK_DECLARE(timeoutlock);
  58.     link_t timeout_active_head;
  59.  
  60.     #ifdef CONFIG_SMP
  61.     atomic_t kcpulbstarted;
  62.     waitq_t kcpulb_wq;
  63.     #endif /* CONFIG_SMP */
  64.  
  65.     /**
  66.      * Processor ID assigned by kernel.
  67.      */
  68.     int id;
  69.    
  70.     int active;
  71.     int tlb_active;
  72.  
  73.     __u16 frequency_mhz;
  74.     __u32 delay_loop_const;
  75.  
  76.     cpu_arch_t arch;
  77.  
  78.     thread_t *fpu_owner;
  79.    
  80.     /**
  81.      * Stack used by scheduler when there is no running thread.
  82.      */
  83.     __u8 *stack;
  84. };
  85.  
  86. extern cpu_t *cpus;
  87.  
  88. extern void cpu_init(void);
  89. extern void cpu_list(void);
  90.  
  91. extern void cpu_arch_init(void);
  92. extern void cpu_identify(void);
  93. extern void cpu_print_report(cpu_t *m);
  94.  
  95. #endif
  96.