1 /*-
2 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include "opt_acpi.h"
31 #include <sys/param.h>
32 #include <sys/kernel.h>
33 #include <sys/malloc.h>
34 #include <sys/bus.h>
35 #include <sys/ioccom.h>
36 #include <sys/sysctl.h>
37
38 #include "acpi.h"
39 #include <dev/acpica/acpivar.h>
40 #include <dev/acpica/acpiio.h>
41
42 MALLOC_DEFINE(M_ACPIBATT, "acpibatt", "ACPI generic battery data");
43
44 struct acpi_batteries {
45 TAILQ_ENTRY(acpi_batteries) link;
46 struct acpi_battdesc battdesc;
47 };
48
49 static TAILQ_HEAD(,acpi_batteries) acpi_batteries;
50 static int acpi_batteries_initted;
51 static int acpi_batteries_units;
52 static int acpi_battery_info_expire = 5;
53 static struct acpi_battinfo acpi_battery_battinfo;
54 ACPI_SERIAL_DECL(battery, "ACPI generic battery");
55
56 int
57 acpi_battery_get_info_expire(void)
58 {
59 return (acpi_battery_info_expire);
60 }
61
62 int
63 acpi_battery_get_units(void)
64 {
65 return (acpi_batteries_units);
66 }
67
68 int
69 acpi_battery_get_battdesc(int logical_unit, struct acpi_battdesc *battdesc)
70 {
71 struct acpi_batteries *bp;
72 int error, i;
73
74 error = ENXIO;
75 ACPI_SERIAL_BEGIN(battery);
76 if (logical_unit < 0 || logical_unit >= acpi_batteries_units)
77 goto out;
78
79 i = 0;
80 TAILQ_FOREACH(bp, &acpi_batteries, link) {
81 if (logical_unit == i) {
82 battdesc->type = bp->battdesc.type;
83 battdesc->phys_unit = bp->battdesc.phys_unit;
84 error = 0;
85 break;
86 }
87 i++;
88 }
89
90 out:
91 ACPI_SERIAL_END(battery);
92 return (error);
93 }
94
95 int
96 acpi_battery_get_battinfo(int unit, struct acpi_battinfo *battinfo)
97 {
98 struct acpi_battdesc battdesc;
99 int error;
100
101 error = 0;
102 if (unit == -1) {
103 error = acpi_cmbat_get_battinfo(-1, battinfo);
104 goto out;
105 } else {
106 error = acpi_battery_get_battdesc(unit, &battdesc);
107 if (error != 0)
108 goto out;
109
110 switch (battdesc.type) {
111 case ACPI_BATT_TYPE_CMBAT:
112 error = acpi_cmbat_get_battinfo(battdesc.phys_unit, battinfo);
113 break;
114 default:
115 error = ENXIO;
116 break;
117 }
118 }
119
120 out:
121 return (error);
122 }
123
124 static int
125 acpi_battery_ioctl(u_long cmd, caddr_t addr, void *arg)
126 {
127 union acpi_battery_ioctl_arg *ioctl_arg;
128 int error, logical_unit;
129
130 ioctl_arg = (union acpi_battery_ioctl_arg *)addr;
131 error = 0;
132
133 /*
134 * No security check required: information retrieval only. If
135 * new functions are added here, a check might be required.
136 */
137 switch (cmd) {
138 case ACPIIO_BATT_GET_UNITS:
139 *(int *)addr = acpi_battery_get_units();
140 break;
141 case ACPIIO_BATT_GET_BATTDESC:
142 logical_unit = ioctl_arg->unit;
143 error = acpi_battery_get_battdesc(logical_unit, &ioctl_arg->battdesc);
144 break;
145 case ACPIIO_BATT_GET_BATTINFO:
146 logical_unit = ioctl_arg->unit;
147 error = acpi_battery_get_battinfo(logical_unit, &ioctl_arg->battinfo);
148 break;
149 default:
150 error = EINVAL;
151 break;
152 }
153
154 return (error);
155 }
156
157 static int
158 acpi_battery_sysctl(SYSCTL_HANDLER_ARGS)
159 {
160 int val, error;
161
162 acpi_battery_get_battinfo(-1, &acpi_battery_battinfo);
163 val = *(u_int *)oidp->oid_arg1;
164 error = sysctl_handle_int(oidp, &val, 0, req);
165 return (error);
166 }
167
168 static int
169 acpi_battery_init(void)
170 {
171 struct acpi_softc *sc;
172 device_t dev;
173 int error;
174
175 ACPI_SERIAL_ASSERT(battery);
176
177 error = ENXIO;
178 dev = devclass_get_device(devclass_find("acpi"), 0);
179 if (dev == NULL)
180 goto out;
181 sc = device_get_softc(dev);
182
183 TAILQ_INIT(&acpi_batteries);
184
185 /* XXX We should back out registered ioctls on error. */
186 error = acpi_register_ioctl(ACPIIO_BATT_GET_UNITS, acpi_battery_ioctl,
187 NULL);
188 if (error != 0)
189 goto out;
190 error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTDESC, acpi_battery_ioctl,
191 NULL);
192 if (error != 0)
193 goto out;
194 error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTINFO, acpi_battery_ioctl,
195 NULL);
196 if (error != 0)
197 goto out;
198
199 sysctl_ctx_init(&sc->acpi_battery_sysctl_ctx);
200 sc->acpi_battery_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_battery_sysctl_ctx,
201 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "battery", CTLFLAG_RD,
202 0, "");
203 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx,
204 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
205 OID_AUTO, "life", CTLTYPE_INT | CTLFLAG_RD,
206 &acpi_battery_battinfo.cap, 0, acpi_battery_sysctl, "I", "");
207 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx,
208 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
209 OID_AUTO, "time", CTLTYPE_INT | CTLFLAG_RD,
210 &acpi_battery_battinfo.min, 0, acpi_battery_sysctl, "I", "");
211 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx,
212 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
213 OID_AUTO, "state", CTLTYPE_INT | CTLFLAG_RD,
214 &acpi_battery_battinfo.state, 0, acpi_battery_sysctl, "I", "");
215 SYSCTL_ADD_INT(&sc->acpi_battery_sysctl_ctx,
216 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
217 OID_AUTO, "units", CTLFLAG_RD, &acpi_batteries_units, 0, "");
218 SYSCTL_ADD_INT(&sc->acpi_battery_sysctl_ctx,
219 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
220 OID_AUTO, "info_expire", CTLFLAG_RD | CTLFLAG_RW,
221 &acpi_battery_info_expire, 0, "");
222
223 acpi_batteries_initted = TRUE;
224
225 out:
226 return (error);
227 }
228
229 int
230 acpi_battery_register(int type, int phys_unit)
231 {
232 struct acpi_batteries *bp;
233 int error;
234
235 error = 0;
236 bp = malloc(sizeof(*bp), M_ACPIBATT, M_NOWAIT);
237 if (bp == NULL)
238 return (ENOMEM);
239
240 ACPI_SERIAL_BEGIN(battery);
241 if (!acpi_batteries_initted && (error = acpi_battery_init()) != 0) {
242 printf("acpi_battery_register failed for unit %d\n", phys_unit);
243 goto out;
244 }
245 bp->battdesc.type = type;
246 bp->battdesc.phys_unit = phys_unit;
247 TAILQ_INSERT_TAIL(&acpi_batteries, bp, link);
248 acpi_batteries_units++;
249
250 out:
251 ACPI_SERIAL_END(battery);
252 if (error)
253 free(bp, M_ACPIBATT);
254 return (error);
255 }
256
257 int
258 acpi_battery_remove(int type, int phys_unit)
259 {
260 struct acpi_batteries *bp, *tmp;
261 int ret;
262
263 ret = ENOENT;
264 ACPI_SERIAL_BEGIN(battery);
265 TAILQ_FOREACH_SAFE(bp, &acpi_batteries, link, tmp) {
266 if (bp->battdesc.type == type && bp->battdesc.phys_unit == phys_unit) {
267 TAILQ_REMOVE(&acpi_batteries, bp, link);
268 acpi_batteries_units--;
269 ret = 0;
270 break;
271 }
272 }
273 ACPI_SERIAL_END(battery);
274 if (ret == 0)
275 free(bp, M_ACPIBATT);
276 return (ret);
277 }
Cache object: b259abfea00b9d4a73f8da1c6f4e5e6e
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