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