The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/mips/include/hwfunc.h

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    1 /*-
    2  * Copyright (c) 2003-2004 Juli Mallett.  All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   23  * SUCH DAMAGE.
   24  *
   25  * $FreeBSD: releng/8.4/sys/mips/include/hwfunc.h 215938 2010-11-27 12:26:40Z jchandra $
   26  */
   27 
   28 #ifndef _MACHINE_HWFUNC_H_
   29 #define _MACHINE_HWFUNC_H_
   30 
   31 struct trapframe;
   32 struct timecounter;
   33 /*
   34  * Hooks downward into hardware functionality.
   35  */
   36 
   37 void platform_halt(void);
   38 void platform_intr(struct trapframe *);
   39 void platform_reset(void);
   40 void platform_start(__register_t, __register_t,  __register_t, __register_t);
   41 
   42 /* For clocks and ticks and such */
   43 void platform_initclocks(void);
   44 uint64_t platform_get_frequency(void);
   45 unsigned platform_get_timecount(struct timecounter *);
   46 
   47 /* For hardware specific CPU initialization */
   48 void platform_cpu_init(void);
   49 void platform_secondary_init(void);
   50 
   51 #ifdef SMP
   52 
   53 /*
   54  * Spin up the AP so that it starts executing MP bootstrap entry point: mpentry
   55  *
   56  * Returns 0 on sucess and non-zero on failure.
   57  */
   58 int platform_start_ap(int processor_id);
   59 
   60 /*
   61  * Platform-specific initialization that needs to be done when an AP starts
   62  * running. This function is called from the MP bootstrap code in mpboot.S
   63  */
   64 void platform_init_ap(int processor_id);
   65 
   66 /*
   67  * Return a plaform-specific interrrupt number that is used to deliver IPIs.
   68  *
   69  * This hardware interrupt is used to deliver IPIs exclusively and must
   70  * not be used for any other interrupt source.
   71  */
   72 int platform_ipi_intrnum(void);
   73 
   74 /*
   75  * Trigger a IPI interrupt on 'cpuid'.
   76  */
   77 void platform_ipi_send(int cpuid);
   78 
   79 /*
   80  * Quiesce the IPI interrupt source on the current cpu.
   81  */
   82 void platform_ipi_clear(void);
   83 
   84 /*
   85  * Return the processor id.
   86  *
   87  * Note that this function is called in early boot when stack is not available.
   88  */
   89 extern int platform_processor_id(void);
   90 
   91 /*
   92  * Return the number of processors available on this platform.
   93  */
   94 extern int platform_num_processors(void);
   95 
   96 /*
   97  * Return the topology of processors on this platform
   98  */
   99 struct cpu_group *platform_smp_topo(void);
  100 
  101 
  102 #endif  /* SMP */
  103 #endif /* !_MACHINE_HWFUNC_H_ */

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