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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/thread.h>
  34. #include <proc/task.h>
  35. #include <proc/scheduler.h>
  36. #include <time/clock.h>
  37. #include <synch/spinlock.h>
  38. #include <synch/waitq.h>
  39. #include <arch/types.h>
  40. #include <typedefs.h>
  41. #include <arch/context.h>
  42.  
  43. #define CPU_STACK_SIZE  PAGE_SIZE
  44.  
  45. struct cpu {
  46.     spinlock_t lock;
  47.     context_t saved_context;
  48.  
  49.     volatile int nrdy;
  50.     runq_t rq[RQ_COUNT];
  51.     volatile int needs_relink;
  52.  
  53.     spinlock_t timeoutlock;
  54.     link_t timeout_active_head;
  55.  
  56.     #ifdef __SMP__
  57.     int kcpulbstarted;
  58.     waitq_t kcpulb_wq;
  59.     #endif /* __SMP__ */
  60.  
  61.     int id;
  62.     int active;
  63.     int tlb_active;
  64.  
  65.     __u16 frequency_mhz;
  66.     __u32 delay_loop_const;
  67.  
  68.     cpu_arch_t arch;
  69.  
  70.     thread_t *fpu_owner;
  71.    
  72.     __u8 *stack;
  73. };
  74.  
  75. /*
  76.  * read/write by associated CPU
  77.  * read only by other CPUs
  78.  */
  79. struct cpu_private_data {
  80.     thread_t *thread;
  81.     task_t *task;
  82. };
  83.  
  84. extern cpu_private_data_t *cpu_private_data;
  85. extern cpu_t *cpus;
  86.  
  87. extern void cpu_init(void);
  88. extern void cpu_arch_init(void);
  89. extern void cpu_identify(void);
  90. extern void cpu_print_report(cpu_t *m);
  91.  
  92. #endif
  93.