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 # $FreeBSD$
27 #
28
29 #include <sys/bus.h>
30 #include <sys/types.h>
31
32 #include <contrib/dev/acpica/include/acpi.h>
33
34 INTERFACE acpi;
35
36 #
37 # Callback function for each child handle traversed in acpi_scan_children().
38 #
39 # ACPI_HANDLE h: current child device being considered
40 #
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.
45 #
46 # level: current level being scanned
47 #
48 # void *arg: argument passed in original call to acpi_scan_children()
49 #
50 # Returns: AE_OK if the scan should continue, otherwise an error
51 #
52 HEADER {
53 typedef ACPI_STATUS (*acpi_scan_cb_t)(ACPI_HANDLE h, device_t *dev,
54 int level, void *arg);
55
56 struct acpi_bix;
57 struct acpi_bif;
58 struct acpi_bst;
59 };
60
61 #
62 # Default implementation for acpi_id_probe().
63 #
64 CODE {
65 static char *
66 acpi_generic_id_probe(device_t bus, device_t dev, char **ids)
67 {
68 return (NULL);
69 }
70 };
71
72 #
73 # Check a device for a match in a list of ID strings. The strings can be
74 # EISA PNP IDs or ACPI _HID/_CID values.
75 #
76 # device_t bus: parent bus for the device
77 #
78 # device_t dev: device being considered
79 #
80 # char **ids: array of ID strings to consider
81 #
82 # Returns: ID string matched or NULL if no match
83 #
84 METHOD char * id_probe {
85 device_t bus;
86 device_t dev;
87 char **ids;
88 } DEFAULT acpi_generic_id_probe;
89
90 #
91 # Evaluate an ACPI method or object, given its path.
92 #
93 # device_t bus: parent bus for the device
94 #
95 # device_t dev: evaluate the object relative to this device's handle.
96 # Specify NULL to begin the search at the ACPI root.
97 #
98 # ACPI_STRING pathname: absolute or relative path to this object
99 #
100 # ACPI_OBJECT_LIST *parameters: array of arguments to pass to the object.
101 # Specify NULL if there are none.
102 #
103 # ACPI_BUFFER *ret: the result (if any) of the evaluation
104 # Specify NULL if there is none.
105 #
106 # Returns: AE_OK or an error value
107 #
108 METHOD ACPI_STATUS evaluate_object {
109 device_t bus;
110 device_t dev;
111 ACPI_STRING pathname;
112 ACPI_OBJECT_LIST *parameters;
113 ACPI_BUFFER *ret;
114 };
115
116 #
117 # Get the highest power state (D0-D3) that is usable for a device when
118 # suspending/resuming. If a bus calls this when suspending a device, it
119 # must also call it when resuming.
120 #
121 # device_t bus: parent bus for the device
122 #
123 # device_t dev: check this device's appropriate power state
124 #
125 # int *dstate: if successful, contains the highest valid sleep state
126 #
127 # Returns: 0 on success or some other error value.
128 #
129 METHOD int pwr_for_sleep {
130 device_t bus;
131 device_t dev;
132 int *dstate;
133 };
134
135 #
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".
139 #
140 # device_t bus: parent bus for the device
141 #
142 # device_t dev: begin the scan starting with this device's handle.
143 # Specify NULL to begin the scan at the ACPI root.
144 #
145 # int max_depth: number of levels to traverse (i.e., 1 means just the
146 # immediate children.
147 #
148 # acpi_scan_cb_t user_fn: called for each child handle
149 #
150 # void *arg: argument to pass to the callback function
151 #
152 # Returns: AE_OK or an error value, based on the callback return value
153 #
154 METHOD ACPI_STATUS scan_children {
155 device_t bus;
156 device_t dev;
157 int max_depth;
158 acpi_scan_cb_t user_fn;
159 void *arg;
160 };
161
162 #
163 # Query a given driver for its supported feature(s). This should be
164 # called by the parent bus before the driver is probed.
165 #
166 # driver_t *driver: child driver
167 #
168 # u_int *features: returned bitmask of all supported features
169 #
170 STATICMETHOD int get_features {
171 driver_t *driver;
172 u_int *features;
173 };
174
175 #
176 # Read embedded controller (EC) address space
177 #
178 # device_t dev: EC device
179 # u_int addr: Address to read from in EC space
180 # UINT64 *val: Location to store read value
181 # int width: Size of area to read in bytes
182 #
183 METHOD int ec_read {
184 device_t dev;
185 u_int addr;
186 UINT64 *val;
187 int width;
188 };
189
190 #
191 # Write embedded controller (EC) address space
192 #
193 # device_t dev: EC device
194 # u_int addr: Address to write to in EC space
195 # UINT64 val: Value to write
196 # int width: Size of value to write in bytes
197 #
198 METHOD int ec_write {
199 device_t dev;
200 u_int addr;
201 UINT64 val;
202 int width;
203 };
204
205 #
206 # Get battery information (_BIF or _BIX format)
207 #
208 # device_t dev: Battery device
209 # void *bix: Pointer to storage for _BIF or _BIX results
210 # size_t len: length of acpi_bif or acpi_bix.
211 #
212 METHOD int batt_get_info {
213 device_t dev;
214 void *bix;
215 size_t len;
216 };
217
218 #
219 # Get battery status (_BST format)
220 #
221 # device_t dev: Battery device
222 # struct acpi_bst *bst: Pointer to storage for _BST results
223 #
224 METHOD int batt_get_status {
225 device_t dev;
226 struct acpi_bst *bst;
227 };
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