acpi_if.m revision 138305
1131276Snjl# 2131276Snjl# Copyright (c) 2004 Nate Lawson 3131276Snjl# All rights reserved. 4131276Snjl# 5131276Snjl# Redistribution and use in source and binary forms, with or without 6131276Snjl# modification, are permitted provided that the following conditions 7131276Snjl# are met: 8131276Snjl# 1. Redistributions of source code must retain the above copyright 9131276Snjl# notice, this list of conditions and the following disclaimer. 10131276Snjl# 2. Redistributions in binary form must reproduce the above copyright 11131276Snjl# notice, this list of conditions and the following disclaimer in the 12131276Snjl# documentation and/or other materials provided with the distribution. 13131276Snjl# 14131276Snjl# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15131276Snjl# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16131276Snjl# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17131276Snjl# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18131276Snjl# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19131276Snjl# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20131276Snjl# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21131276Snjl# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22131276Snjl# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23131276Snjl# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24131276Snjl# SUCH DAMAGE. 25131276Snjl# 26131276Snjl# $FreeBSD: head/sys/dev/acpica/acpi_if.m 138305 2004-12-02 08:04:57Z njl $ 27131276Snjl# 28131276Snjl 29131276Snjl#include <sys/bus.h> 30131276Snjl#include <sys/types.h> 31131276Snjl#include "acpi.h" 32131276Snjl 33131276SnjlINTERFACE acpi; 34131276Snjl 35131276Snjl# 36132212Snjl# Callback function for each child handle traversed in acpi_scan_children(). 37131276Snjl# 38132212Snjl# ACPI_HANDLE h: current child device being considered 39132212Snjl# 40132212Snjl# device_t *dev: pointer to the child's original device_t or NULL if there 41132212Snjl# was none. The callback should store a new device in *dev if it has 42132212Snjl# created one. The method implementation will automatically clean up the 43132212Snjl# previous device and properly associate the current ACPI_HANDLE with it. 44132212Snjl# 45132212Snjl# level: current level being scanned 46132212Snjl# 47132212Snjl# void *arg: argument passed in original call to acpi_scan_children() 48132212Snjl# 49132212Snjl# Returns: AE_OK if the scan should continue, otherwise an error 50132212Snjl# 51132212SnjlHEADER { 52132212Snjl typedef ACPI_STATUS (*acpi_scan_cb_t)(ACPI_HANDLE h, device_t *dev, 53132212Snjl int level, void *arg); 54132212Snjl}; 55132212Snjl 56132212Snjl# 57132212Snjl# Default implementation for acpi_id_probe(). 58132212Snjl# 59131276SnjlCODE { 60131276Snjl static char * 61131276Snjl acpi_generic_id_probe(device_t bus, device_t dev, char **ids) 62131276Snjl { 63131276Snjl return (NULL); 64131276Snjl } 65131276Snjl}; 66131276Snjl 67131276Snjl# 68132212Snjl# Check a device for a match in a list of ID strings. The strings can be 69132212Snjl# EISA PNP IDs or ACPI _HID/_CID values. 70131276Snjl# 71132212Snjl# device_t bus: parent bus for the device 72132212Snjl# 73132212Snjl# device_t dev: device being considered 74132212Snjl# 75132212Snjl# char **ids: array of ID strings to consider 76132212Snjl# 77132212Snjl# Returns: ID string matched or NULL if no match 78132212Snjl# 79131276SnjlMETHOD char * id_probe { 80131276Snjl device_t bus; 81131276Snjl device_t dev; 82131276Snjl char **ids; 83131276Snjl} DEFAULT acpi_generic_id_probe; 84131276Snjl 85131276Snjl# 86132212Snjl# Evaluate an ACPI method or object, given its path. 87131276Snjl# 88132212Snjl# device_t bus: parent bus for the device 89132212Snjl# 90132212Snjl# device_t dev: evaluate the object relative to this device's handle. 91132212Snjl# Specify NULL to begin the search at the ACPI root. 92132212Snjl# 93132212Snjl# ACPI_STRING pathname: absolute or relative path to this object 94132212Snjl# 95132212Snjl# ACPI_OBJECT_LIST *parameters: array of arguments to pass to the object. 96132212Snjl# Specify NULL if there are none. 97132212Snjl# 98132212Snjl# ACPI_BUFFER *ret: the result (if any) of the evaluation 99132212Snjl# Specify NULL if there is none. 100132212Snjl# 101132212Snjl# Returns: AE_OK or an error value 102132212Snjl# 103131276SnjlMETHOD ACPI_STATUS evaluate_object { 104131276Snjl device_t bus; 105131276Snjl device_t dev; 106131276Snjl ACPI_STRING pathname; 107131276Snjl ACPI_OBJECT_LIST *parameters; 108131276Snjl ACPI_BUFFER *ret; 109131276Snjl}; 110131276Snjl 111131276Snjl# 112138305Snjl# Get the highest power state (D0-D3) that is usable for a device when 113138305Snjl# suspending/resuming. If a bus calls this when suspending a device, it 114138305Snjl# must also call it when resuming. 115138305Snjl# 116138305Snjl# device_t bus: parent bus for the device 117138305Snjl# 118138305Snjl# device_t dev: check this device's appropriate power state 119138305Snjl# 120138305Snjl# int *dstate: if successful, contains the highest valid sleep state 121138305Snjl# 122138305Snjl# Returns: 0 on success, ESRCH if device has no special state, or 123138305Snjl# some other error value. 124138305Snjl# 125138305SnjlMETHOD int pwr_for_sleep { 126138305Snjl device_t bus; 127138305Snjl device_t dev; 128138305Snjl int *dstate; 129138305Snjl}; 130138305Snjl 131138305Snjl# 132132212Snjl# Rescan a subtree and optionally reattach devices to handles. Users 133132212Snjl# specify a callback that is called for each ACPI_HANDLE of type Device 134132212Snjl# that is a child of "dev". 135131276Snjl# 136132212Snjl# device_t bus: parent bus for the device 137132212Snjl# 138132212Snjl# device_t dev: begin the scan starting with this device's handle. 139132212Snjl# Specify NULL to begin the scan at the ACPI root. 140132212Snjl# 141132212Snjl# int max_depth: number of levels to traverse (i.e., 1 means just the 142132212Snjl# immediate children. 143132212Snjl# 144132212Snjl# acpi_scan_cb_t user_fn: called for each child handle 145132212Snjl# 146132212Snjl# void *arg: argument to pass to the callback function 147132212Snjl# 148132212Snjl# Returns: AE_OK or an error value, based on the callback return value 149132212Snjl# 150132212SnjlMETHOD ACPI_STATUS scan_children { 151131276Snjl device_t bus; 152131276Snjl device_t dev; 153132212Snjl int max_depth; 154132212Snjl acpi_scan_cb_t user_fn; 155132212Snjl void *arg; 156131276Snjl}; 157