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/10.0/sys/mips/include/hwfunc.h 232853 2012-03-12 07:34:15Z jmallett $
   26  */
   27 
   28 #ifndef _MACHINE_HWFUNC_H_
   29 #define _MACHINE_HWFUNC_H_
   30 
   31 #include <sys/_cpuset.h>
   32 
   33 struct timecounter;
   34 
   35 /*
   36  * Hooks downward into platform functionality.
   37  */
   38 void platform_reset(void);
   39 void platform_start(__register_t, __register_t,  __register_t, __register_t);
   40 
   41 /* For clocks and ticks and such */
   42 void platform_initclocks(void);
   43 uint64_t platform_get_frequency(void);
   44 unsigned platform_get_timecount(struct timecounter *);
   45 
   46 /* For hardware specific CPU initialization */
   47 void platform_cpu_init(void);
   48 
   49 #ifdef SMP
   50 
   51 /*
   52  * Spin up the AP so that it starts executing MP bootstrap entry point: mpentry
   53  *
   54  * Returns 0 on sucess and non-zero on failure.
   55  */
   56 int platform_start_ap(int processor_id);
   57 
   58 /*
   59  * Platform-specific initialization that needs to be done when an AP starts
   60  * running. This function is called from the MP bootstrap code in mpboot.S
   61  */
   62 void platform_init_ap(int processor_id);
   63 
   64 /*
   65  * Return a plaform-specific interrrupt number that is used to deliver IPIs.
   66  *
   67  * This hardware interrupt is used to deliver IPIs exclusively and must
   68  * not be used for any other interrupt source.
   69  */
   70 int platform_ipi_intrnum(void);
   71 
   72 /*
   73  * Trigger a IPI interrupt on 'cpuid'.
   74  */
   75 void platform_ipi_send(int cpuid);
   76 
   77 /*
   78  * Quiesce the IPI interrupt source on the current cpu.
   79  */
   80 void platform_ipi_clear(void);
   81 
   82 /*
   83  * Return the processor id.
   84  *
   85  * Note that this function is called in early boot when stack is not available.
   86  */
   87 extern int platform_processor_id(void);
   88 
   89 /*
   90  * Return the cpumask of available processors.
   91  */
   92 extern void platform_cpu_mask(cpuset_t *mask);
   93 
   94 /*
   95  * Return the topology of processors on this platform
   96  */
   97 struct cpu_group *platform_smp_topo(void);
   98 
   99 #endif  /* SMP */
  100 
  101 #endif /* !_MACHINE_HWFUNC_H_ */

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