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/dev/acpica/acpi_bus_if.m

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    1 #-
    2 # Copyright (c) 2016 The FreeBSD Foundation
    3 # All rights reserved.
    4 #
    5 # This software was developed by Andrew Turner under
    6 # sponsorship from the FreeBSD Foundation.
    7 #
    8 # Redistribution and use in source and binary forms, with or without
    9 # modification, are permitted provided that the following conditions
   10 # are met:
   11 # 1. Redistributions of source code must retain the above copyright
   12 #    notice, this list of conditions and the following disclaimer.
   13 # 2. Redistributions in binary form must reproduce the above copyright
   14 #    notice, this list of conditions and the following disclaimer in the
   15 #    documentation and/or other materials provided with the distribution.
   16 #
   17 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20 # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27 # SUCH DAMAGE.
   28 #
   29 # $FreeBSD: stable/12/sys/dev/acpica/acpi_bus_if.m 327835 2018-01-11 17:09:12Z andrew $
   30 
   31 #include <sys/types.h>
   32 #include <sys/systm.h>
   33 #include <sys/bus.h>
   34 
   35 INTERFACE acpi_bus;
   36 
   37 CODE {
   38         static acpi_bus_map_intr_t acpi_bus_default_map_intr;
   39 
   40         int
   41         acpi_bus_default_map_intr(device_t bus, device_t dev, u_int irq,
   42             int trig, int pol)
   43         {
   44                 device_t parent;
   45 
   46                 /* Pass up the hierarchy */
   47                 parent = device_get_parent(bus);
   48                 if (parent != NULL)
   49                         return (ACPI_BUS_MAP_INTR(parent, dev, irq, trig, pol));
   50 
   51                 panic("Unable to map interrupt %u", irq);
   52         }
   53 };
   54 
   55 # Map an interrupt from ACPI space to the FreeBSD IRQ space. Note that
   56 # both of these may be different than the pysical interrupt space as this
   57 # may be local to each interrupt controller.
   58 #
   59 # This method also associates interrupt metadata with the interrupt,
   60 # removing the need for a post hoc configure step.
   61 METHOD int map_intr {
   62         device_t bus;
   63         device_t dev;
   64         u_int irq;
   65         int trig;
   66         int pol;
   67 } DEFAULT acpi_bus_default_map_intr;

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