2 # Copyright (c) 2004 Nate Lawson
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions
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.
14 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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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
30 #include <sys/types.h>
32 #include <contrib/dev/acpica/include/acpi.h>
37 # Callback function for each child handle traversed in acpi_scan_children().
39 # ACPI_HANDLE h: current child device being considered
41 # device_t *dev: pointer to the child's original device_t or NULL if there
42 # was none. The callback should store a new device in *dev if it has
43 # created one. The method implementation will automatically clean up the
44 # previous device and properly associate the current ACPI_HANDLE with it.
46 # level: current level being scanned
48 # void *arg: argument passed in original call to acpi_scan_children()
50 # Returns: AE_OK if the scan should continue, otherwise an error
53 typedef ACPI_STATUS (*acpi_scan_cb_t)(ACPI_HANDLE h, device_t *dev,
54 int level, void *arg);
61 # Default implementation for acpi_id_probe().
65 acpi_generic_id_probe(device_t bus, device_t dev, char **ids)
72 # Check a device for a match in a list of ID strings. The strings can be
73 # EISA PNP IDs or ACPI _HID/_CID values.
75 # device_t bus: parent bus for the device
77 # device_t dev: device being considered
79 # char **ids: array of ID strings to consider
81 # Returns: ID string matched or NULL if no match
83 METHOD char * id_probe {
87 } DEFAULT acpi_generic_id_probe;
90 # Evaluate an ACPI method or object, given its path.
92 # device_t bus: parent bus for the device
94 # device_t dev: evaluate the object relative to this device's handle.
95 # Specify NULL to begin the search at the ACPI root.
97 # ACPI_STRING pathname: absolute or relative path to this object
99 # ACPI_OBJECT_LIST *parameters: array of arguments to pass to the object.
100 # Specify NULL if there are none.
102 # ACPI_BUFFER *ret: the result (if any) of the evaluation
103 # Specify NULL if there is none.
105 # Returns: AE_OK or an error value
107 METHOD ACPI_STATUS evaluate_object {
110 ACPI_STRING pathname;
111 ACPI_OBJECT_LIST *parameters;
116 # Get the highest power state (D0-D3) that is usable for a device when
117 # suspending/resuming. If a bus calls this when suspending a device, it
118 # must also call it when resuming.
120 # device_t bus: parent bus for the device
122 # device_t dev: check this device's appropriate power state
124 # int *dstate: if successful, contains the highest valid sleep state
126 # Returns: 0 on success, ESRCH if device has no special state, or
127 # some other error value.
129 METHOD int pwr_for_sleep {
136 # Rescan a subtree and optionally reattach devices to handles. Users
137 # specify a callback that is called for each ACPI_HANDLE of type Device
138 # that is a child of "dev".
140 # device_t bus: parent bus for the device
142 # device_t dev: begin the scan starting with this device's handle.
143 # Specify NULL to begin the scan at the ACPI root.
145 # int max_depth: number of levels to traverse (i.e., 1 means just the
146 # immediate children.
148 # acpi_scan_cb_t user_fn: called for each child handle
150 # void *arg: argument to pass to the callback function
152 # Returns: AE_OK or an error value, based on the callback return value
154 METHOD ACPI_STATUS scan_children {
158 acpi_scan_cb_t user_fn;
163 # Query a given driver for its supported feature(s). This should be
164 # called by the parent bus before the driver is probed.
166 # driver_t *driver: child driver
168 # u_int *features: returned bitmask of all supported features
170 STATICMETHOD int get_features {
176 # Read embedded controller (EC) address space
178 # device_t dev: EC device
179 # u_int addr: Address to read from in EC space
180 # ACPI_INTEGER *val: Location to store read value
181 # int width: Size of area to read in bytes
191 # Write embedded controller (EC) address space
193 # device_t dev: EC device
194 # u_int addr: Address to write to in EC space
195 # ACPI_INTEGER val: Value to write
196 # int width: Size of value to write in bytes
198 METHOD int ec_write {
206 # Get battery information (_BIF format)
208 # device_t dev: Battery device
209 # struct acpi_bif *bif: Pointer to storage for _BIF results
211 METHOD int batt_get_info {
213 struct acpi_bif *bif;
217 # Get battery status (_BST format)
219 # device_t dev: Battery device
220 # struct acpi_bst *bst: Pointer to storage for _BST results
222 METHOD int batt_get_status {
224 struct acpi_bst *bst;