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  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2004 Juli Mallett <jmallett@FreeBSD.org>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 #ifndef _MACHINE_INTR_MACHDEP_H_
   32 #define _MACHINE_INTR_MACHDEP_H_
   33 
   34 #include <sys/vmmeter.h>
   35 #include <machine/atomic.h>
   36 
   37 #if defined(CPU_RMI) || defined(CPU_NLM)
   38 #define XLR_MAX_INTR 64
   39 #else
   40 #define NHARD_IRQS      6
   41 #define NSOFT_IRQS      2
   42 #endif
   43 
   44 struct trapframe;
   45 
   46 void cpu_init_interrupts(void);
   47 void cpu_establish_hardintr(const char *, driver_filter_t *, driver_intr_t *,
   48     void *, int, int, void **);
   49 void cpu_establish_softintr(const char *, driver_filter_t *, void (*)(void*),
   50     void *, int, int, void **);
   51 void cpu_intr(struct trapframe *);
   52 
   53 /*
   54  * Allow a platform to override the default hard interrupt mask and unmask
   55  * functions. The 'arg' can be cast safely to an 'int' and holds the mips
   56  * hard interrupt number to mask or unmask.
   57  */
   58 typedef void (*cpu_intr_mask_t)(void *arg);
   59 typedef void (*cpu_intr_unmask_t)(void *arg);
   60 void cpu_set_hardintr_mask_func(cpu_intr_mask_t func);
   61 void cpu_set_hardintr_unmask_func(cpu_intr_unmask_t func);
   62 
   63 /*
   64  * Opaque datatype that represents intr counter
   65  */
   66 typedef unsigned long* mips_intrcnt_t;
   67 
   68 mips_intrcnt_t mips_intrcnt_create(const char *);
   69 void mips_intrcnt_setname(mips_intrcnt_t, const char *);
   70 
   71 static __inline void
   72 mips_intrcnt_inc(mips_intrcnt_t counter)
   73 {
   74         if (counter)
   75                 atomic_add_long(counter, 1);
   76         VM_CNT_INC(v_intr);
   77 }
   78 #endif /* !_MACHINE_INTR_MACHDEP_H_ */

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