source: mainline/kernel/generic/include/cpu.h@ a74d0ad

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since a74d0ad was 55b77d9, checked in by Jiri Svoboda <jiri@…>, 14 years ago

Separate list_t typedef from link_t (kernel part).

  • list_t represents lists
  • Use list_first(), list_last(), list_empty() where appropriate
  • Use list_foreach() where possible
  • Replace improper uses of list_prepend() with list_insert_after()
  • Replace improper uses of list_append() with list_insert_before()
  • Property mode set to 100644
File size: 2.9 KB
Line 
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/** CPU structure.
45 *
46 * There is one structure like this for every processor.
47 */
48typedef struct cpu {
49 IRQ_SPINLOCK_DECLARE(lock);
50
51 tlb_shootdown_msg_t tlb_messages[TLB_MESSAGE_QUEUE_LEN];
52 size_t tlb_messages_count;
53
54 context_t saved_context;
55
56 atomic_t nrdy;
57 runq_t rq[RQ_COUNT];
58 volatile size_t needs_relink;
59
60 IRQ_SPINLOCK_DECLARE(timeoutlock);
61 list_t timeout_active_list;
62
63 /**
64 * When system clock loses a tick, it is
65 * recorded here so that clock() can react.
66 * This variable is CPU-local and can be
67 * only accessed when interrupts are
68 * disabled.
69 */
70 size_t missed_clock_ticks;
71
72 /**
73 * Processor cycle accounting.
74 */
75 bool idle;
76 uint64_t last_cycle;
77 uint64_t idle_cycles;
78 uint64_t busy_cycles;
79
80 /**
81 * Processor ID assigned by kernel.
82 */
83 unsigned int id;
84
85 bool active;
86 bool tlb_active;
87
88 uint16_t frequency_mhz;
89 uint32_t delay_loop_const;
90
91 cpu_arch_t arch;
92
93 struct thread *fpu_owner;
94
95 /**
96 * Stack used by scheduler when there is no running thread.
97 */
98 uint8_t *stack;
99} cpu_t;
100
101extern cpu_t *cpus;
102
103extern void cpu_init(void);
104extern void cpu_list(void);
105
106extern void cpu_arch_init(void);
107extern void cpu_identify(void);
108extern void cpu_print_report(cpu_t *);
109
110#endif
111
112/** @}
113 */
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