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_if.m

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    1 #
    2 # Copyright (c) 2004 Nate Lawson
    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: releng/5.3/sys/dev/acpica/acpi_if.m 132212 2004-07-15 16:29:08Z njl $
   27 #
   28 
   29 #include <sys/bus.h>
   30 #include <sys/types.h>
   31 #include "acpi.h"
   32 
   33 INTERFACE acpi;
   34 
   35 #
   36 # Callback function for each child handle traversed in acpi_scan_children().
   37 #
   38 # ACPI_HANDLE h:  current child device being considered
   39 #
   40 # device_t *dev:  pointer to the child's original device_t or NULL if there
   41 #   was none.  The callback should store a new device in *dev if it has
   42 #   created one.  The method implementation will automatically clean up the
   43 #   previous device and properly associate the current ACPI_HANDLE with it.
   44 #
   45 # level:  current level being scanned
   46 #
   47 # void *arg:  argument passed in original call to acpi_scan_children()
   48 #
   49 # Returns:  AE_OK if the scan should continue, otherwise an error
   50 #
   51 HEADER {
   52         typedef ACPI_STATUS (*acpi_scan_cb_t)(ACPI_HANDLE h, device_t *dev,
   53             int level, void *arg);
   54 };
   55 
   56 #
   57 # Default implementation for acpi_id_probe().
   58 #
   59 CODE {
   60         static char *
   61         acpi_generic_id_probe(device_t bus, device_t dev, char **ids)
   62         {
   63                 return (NULL);
   64         }
   65 };
   66 
   67 #
   68 # Check a device for a match in a list of ID strings.  The strings can be
   69 # EISA PNP IDs or ACPI _HID/_CID values.
   70 #
   71 # device_t bus:  parent bus for the device
   72 #
   73 # device_t dev:  device being considered
   74 #
   75 # char **ids:  array of ID strings to consider
   76 #
   77 # Returns:  ID string matched or NULL if no match
   78 #
   79 METHOD char * id_probe {
   80         device_t        bus;
   81         device_t        dev;
   82         char            **ids;
   83 } DEFAULT acpi_generic_id_probe;
   84 
   85 #
   86 # Evaluate an ACPI method or object, given its path.
   87 #
   88 # device_t bus:  parent bus for the device
   89 #
   90 # device_t dev:  evaluate the object relative to this device's handle.
   91 #   Specify NULL to begin the search at the ACPI root.
   92 #
   93 # ACPI_STRING pathname:  absolute or relative path to this object
   94 #
   95 # ACPI_OBJECT_LIST *parameters:  array of arguments to pass to the object.
   96 #   Specify NULL if there are none.
   97 #
   98 # ACPI_BUFFER *ret:  the result (if any) of the evaluation
   99 #   Specify NULL if there is none.
  100 #
  101 # Returns:  AE_OK or an error value
  102 #
  103 METHOD ACPI_STATUS evaluate_object {
  104         device_t        bus;
  105         device_t        dev;
  106         ACPI_STRING     pathname;
  107         ACPI_OBJECT_LIST *parameters;
  108         ACPI_BUFFER     *ret;
  109 };
  110 
  111 #
  112 # Rescan a subtree and optionally reattach devices to handles.  Users
  113 # specify a callback that is called for each ACPI_HANDLE of type Device
  114 # that is a child of "dev".
  115 #
  116 # device_t bus:  parent bus for the device
  117 #
  118 # device_t dev:  begin the scan starting with this device's handle.
  119 #   Specify NULL to begin the scan at the ACPI root.
  120 # 
  121 # int max_depth:  number of levels to traverse (i.e., 1 means just the
  122 #   immediate children.
  123 #
  124 # acpi_scan_cb_t user_fn:  called for each child handle
  125 #
  126 # void *arg:  argument to pass to the callback function
  127 #
  128 # Returns:  AE_OK or an error value, based on the callback return value
  129 #
  130 METHOD ACPI_STATUS scan_children {
  131         device_t        bus;
  132         device_t        dev;
  133         int             max_depth;
  134         acpi_scan_cb_t  user_fn;
  135         void            *arg;
  136 };

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