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/intr_machdep.h

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    1 /*-
    2  * Copyright (c) 2004 Juli Mallett <jmallett@FreeBSD.org>
    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  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD$
   27  */
   28 
   29 #ifndef _MACHINE_INTR_MACHDEP_H_
   30 #define _MACHINE_INTR_MACHDEP_H_
   31 
   32 #include <sys/vmmeter.h>
   33 #include <machine/atomic.h>
   34 
   35 #if defined(CPU_RMI) || defined(CPU_NLM)
   36 #define XLR_MAX_INTR 64
   37 #else
   38 #define NHARD_IRQS      6
   39 #define NSOFT_IRQS      2
   40 #endif
   41 
   42 struct trapframe;
   43 
   44 void cpu_init_interrupts(void);
   45 void cpu_establish_hardintr(const char *, driver_filter_t *, driver_intr_t *,
   46     void *, int, int, void **);
   47 void cpu_establish_softintr(const char *, driver_filter_t *, void (*)(void*),
   48     void *, int, int, void **);
   49 void cpu_intr(struct trapframe *);
   50 
   51 /*
   52  * Allow a platform to override the default hard interrupt mask and unmask
   53  * functions. The 'arg' can be cast safely to an 'int' and holds the mips
   54  * hard interrupt number to mask or unmask.
   55  */
   56 typedef void (*cpu_intr_mask_t)(void *arg);
   57 typedef void (*cpu_intr_unmask_t)(void *arg);
   58 void cpu_set_hardintr_mask_func(cpu_intr_mask_t func);
   59 void cpu_set_hardintr_unmask_func(cpu_intr_unmask_t func);
   60 
   61 /*
   62  * Opaque datatype that represents intr counter
   63  */
   64 typedef unsigned long* mips_intrcnt_t;
   65 
   66 mips_intrcnt_t mips_intrcnt_create(const char *);
   67 void mips_intrcnt_setname(mips_intrcnt_t, const char *);
   68 
   69 static __inline void
   70 mips_intrcnt_inc(mips_intrcnt_t counter)
   71 {
   72         if (counter)
   73                 atomic_add_long(counter, 1);
   74         PCPU_INC(cnt.v_intr);
   75 }
   76 #endif /* !_MACHINE_INTR_MACHDEP_H_ */

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