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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 <arch/cpu.h>
  39. #include <proc/scheduler.h>
  40. #include <synch/spinlock.h>
  41. #include <synch/waitq.h>
  42. #include <arch/types.h>
  43. #include <typedefs.h>
  44. #include <arch/context.h>
  45. #include <config.h>
  46. #include <adt/list.h>
  47. #include <mm/tlb.h>
  48.  
  49. #define CPU_STACK_SIZE  STACK_SIZE
  50.  
  51. /** CPU structure.
  52.  *
  53.  * There is one structure like this for every processor.
  54.  */
  55. struct cpu {
  56.     SPINLOCK_DECLARE(lock);
  57.  
  58.     tlb_shootdown_msg_t tlb_messages[TLB_MESSAGE_QUEUE_LEN];
  59.     count_t tlb_messages_count;
  60.    
  61.     context_t saved_context;
  62.  
  63.     atomic_t nrdy;
  64.     runq_t rq[RQ_COUNT];
  65.     volatile count_t needs_relink;
  66.  
  67.     SPINLOCK_DECLARE(timeoutlock);
  68.     link_t timeout_active_head;
  69.  
  70.     count_t missed_clock_ticks; /**< When system clock loses a tick, it is recorded here
  71.                          so that clock() can react. This variable is
  72.                          CPU-local and can be only accessed when interrupts
  73.                          are disabled. */
  74.  
  75.     /**
  76.      * Processor ID assigned by kernel.
  77.      */
  78.     int id;
  79.    
  80.     int active;
  81.     int tlb_active;
  82.  
  83.     uint16_t frequency_mhz;
  84.     uint32_t delay_loop_const;
  85.  
  86.     cpu_arch_t arch;
  87.  
  88.     thread_t *fpu_owner;
  89.    
  90.     /**
  91.      * Stack used by scheduler when there is no running thread.
  92.      */
  93.     uint8_t *stack;
  94. };
  95.  
  96. extern cpu_t *cpus;
  97.  
  98. extern void cpu_init(void);
  99. extern void cpu_list(void);
  100.  
  101. extern void cpu_arch_init(void);
  102. extern void cpu_identify(void);
  103. extern void cpu_print_report(cpu_t *m);
  104.  
  105. #endif
  106.  
  107. /** @}
  108.  */
  109.