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

     /*-
      * Copyright (c) 2004 Juli Mallett <jmallett@FreeBSD.org>
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD: releng/9.0/sys/mips/include/intr_machdep.h 224115 2011-07-16 20:31:29Z jchandra $ 
     */
    
    #ifndef _MACHINE_INTR_MACHDEP_H_
    #define _MACHINE_INTR_MACHDEP_H_
    
    #if defined(CPU_RMI) || defined(CPU_NLM)
    #define XLR_MAX_INTR 64 
    #else
    #define NHARD_IRQS      6
    #define NSOFT_IRQS      2
    #endif
    
    struct trapframe;
    
    void cpu_init_interrupts(void);
    void cpu_establish_hardintr(const char *, driver_filter_t *, driver_intr_t *, 
        void *, int, int, void **);
    void cpu_establish_softintr(const char *, driver_filter_t *, void (*)(void*), 
        void *, int, int, void **);
    void cpu_intr(struct trapframe *);
    
    /*
     * Allow a platform to override the default hard interrupt mask and unmask
     * functions. The 'arg' can be cast safely to an 'int' and holds the mips
     * hard interrupt number to mask or unmask.
     */
    typedef void (*cpu_intr_mask_t)(void *arg);
    typedef void (*cpu_intr_unmask_t)(void *arg);
    void cpu_set_hardintr_mask_func(cpu_intr_mask_t func);
    void cpu_set_hardintr_unmask_func(cpu_intr_unmask_t func);
    
    /*
     * Opaque datatype that represents intr counter
     */
    typedef unsigned long* mips_intrcnt_t;
    
    mips_intrcnt_t mips_intrcnt_create(const char *);
    void mips_intrcnt_setname(mips_intrcnt_t, const char *);
    
    static __inline void
    mips_intrcnt_inc(mips_intrcnt_t counter)
    {
            if (counter)
                    atomic_add_long(counter, 1);
    }
    #endif /* !_MACHINE_INTR_MACHDEP_H_ */

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