1 /*-
2 * Copyright (c) 2000 Takanori Watanabe
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 #include "opt_acpi.h"
29 #include <sys/param.h>
30 #include <sys/kernel.h>
31 #include <sys/bus.h>
32
33 #include <machine/bus.h>
34 #include <sys/rman.h>
35 #include <sys/eventhandler.h>
36 #include <sys/ioccom.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
39 #include <sys/conf.h>
40 #include <sys/power.h>
41
42 #include <contrib/dev/acpica/include/acpi.h>
43
44 #include <dev/acpica/acpivar.h>
45 #include <dev/acpica/acpiio.h>
46 #include <isa/isavar.h>
47 #include <isa/pnpvar.h>
48
49 /* Hooks for the ACPI CA debugging infrastructure */
50 #define _COMPONENT ACPI_AC_ADAPTER
51 ACPI_MODULE_NAME("AC_ADAPTER")
52
53 /* Number of times to retry initialization before giving up. */
54 #define ACPI_ACAD_RETRY_MAX 6
55
56 #define ACPI_POWERSOURCE_STAT_CHANGE 0x80
57
58 struct acpi_acad_softc {
59 int status;
60 };
61
62 static void acpi_acad_get_status(void *);
63 static void acpi_acad_notify_handler(ACPI_HANDLE, UINT32, void *);
64 static int acpi_acad_probe(device_t);
65 static int acpi_acad_attach(device_t);
66 static int acpi_acad_ioctl(u_long, caddr_t, void *);
67 static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS);
68 static void acpi_acad_init_acline(void *arg);
69 static void acpi_acad_ac_only(void *arg);
70
71 static device_method_t acpi_acad_methods[] = {
72 /* Device interface */
73 DEVMETHOD(device_probe, acpi_acad_probe),
74 DEVMETHOD(device_attach, acpi_acad_attach),
75
76 DEVMETHOD_END
77 };
78
79 static driver_t acpi_acad_driver = {
80 "acpi_acad",
81 acpi_acad_methods,
82 sizeof(struct acpi_acad_softc),
83 };
84
85 DRIVER_MODULE(acpi_acad, acpi, acpi_acad_driver, 0, 0);
86 MODULE_DEPEND(acpi_acad, acpi, 1, 1, 1);
87
88 ACPI_SERIAL_DECL(acad, "ACPI AC adapter");
89
90 SYSINIT(acad, SI_SUB_KTHREAD_IDLE, SI_ORDER_FIRST, acpi_acad_ac_only, NULL);
91
92 static void
acpi_acad_get_status(void * context)93 acpi_acad_get_status(void *context)
94 {
95 struct acpi_acad_softc *sc;
96 device_t dev;
97 ACPI_HANDLE h;
98 int newstatus;
99
100 dev = context;
101 sc = device_get_softc(dev);
102 h = acpi_get_handle(dev);
103 newstatus = -1;
104 acpi_GetInteger(h, "_PSR", &newstatus);
105
106 /* If status is valid and has changed, notify the system. */
107 ACPI_SERIAL_BEGIN(acad);
108 if (newstatus != -1 && sc->status != newstatus) {
109 sc->status = newstatus;
110 ACPI_SERIAL_END(acad);
111 power_profile_set_state(newstatus ? POWER_PROFILE_PERFORMANCE :
112 POWER_PROFILE_ECONOMY);
113 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
114 "%s Line\n", newstatus ? "On" : "Off");
115 acpi_UserNotify("ACAD", h, newstatus);
116 EVENTHANDLER_INVOKE(acpi_acad_event, newstatus);
117 } else
118 ACPI_SERIAL_END(acad);
119 }
120
121 static void
acpi_acad_notify_handler(ACPI_HANDLE h,UINT32 notify,void * context)122 acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
123 {
124 device_t dev;
125
126 dev = (device_t)context;
127 switch (notify) {
128 case ACPI_NOTIFY_BUS_CHECK:
129 case ACPI_NOTIFY_DEVICE_CHECK:
130 case ACPI_POWERSOURCE_STAT_CHANGE:
131 /* Temporarily. It is better to notify policy manager */
132 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_get_status, context);
133 break;
134 default:
135 device_printf(dev, "unknown notify %#x\n", notify);
136 break;
137 }
138 }
139
140 static int
acpi_acad_probe(device_t dev)141 acpi_acad_probe(device_t dev)
142 {
143 static char *acad_ids[] = { "ACPI0003", NULL };
144 int rv;
145
146 if (acpi_disabled("acad"))
147 return (ENXIO);
148 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, acad_ids, NULL);
149 if (rv <= 0)
150 device_set_desc(dev, "AC Adapter");
151 return (rv);
152 }
153
154 static int
acpi_acad_attach(device_t dev)155 acpi_acad_attach(device_t dev)
156 {
157 struct acpi_acad_softc *sc;
158 struct acpi_softc *acpi_sc;
159 ACPI_HANDLE handle;
160 int error;
161
162 sc = device_get_softc(dev);
163 handle = acpi_get_handle(dev);
164
165 error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev);
166 if (error != 0)
167 return (error);
168
169 if (device_get_unit(dev) == 0) {
170 acpi_sc = acpi_device_get_parent_softc(dev);
171 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx,
172 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO, "acline",
173 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, dev, 0,
174 acpi_acad_sysctl, "I", "");
175 }
176
177 /* Get initial status after whole system is up. */
178 sc->status = -1;
179
180 /*
181 * Install both system and device notify handlers since the Casio
182 * FIVA needs them.
183 */
184 AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY,
185 acpi_acad_notify_handler, dev);
186 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_init_acline, dev);
187
188 return (0);
189 }
190
191 static int
acpi_acad_ioctl(u_long cmd,caddr_t addr,void * arg)192 acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg)
193 {
194 struct acpi_acad_softc *sc;
195 device_t dev;
196
197 dev = (device_t)arg;
198 sc = device_get_softc(dev);
199
200 /*
201 * No security check required: information retrieval only. If
202 * new functions are added here, a check might be required.
203 */
204 switch (cmd) {
205 case ACPIIO_ACAD_GET_STATUS:
206 acpi_acad_get_status(dev);
207 *(int *)addr = sc->status;
208 break;
209 default:
210 break;
211 }
212
213 return (0);
214 }
215
216 static int
acpi_acad_sysctl(SYSCTL_HANDLER_ARGS)217 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS)
218 {
219 device_t dev = oidp->oid_arg1;
220 struct acpi_acad_softc *sc = device_get_softc(dev);
221 int val;
222
223 acpi_acad_get_status(dev);
224 val = sc->status;
225 return (sysctl_handle_int(oidp, &val, 0, req));
226 }
227
228 static void
acpi_acad_init_acline(void * arg)229 acpi_acad_init_acline(void *arg)
230 {
231 struct acpi_acad_softc *sc;
232 device_t dev;
233 int retry;
234
235 dev = (device_t)arg;
236 sc = device_get_softc(dev);
237 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
238 "acline initialization start\n");
239
240 for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++) {
241 acpi_acad_get_status(dev);
242 if (sc->status != -1)
243 break;
244 AcpiOsSleep(10000);
245 }
246
247 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
248 "acline initialization done, tried %d times\n", retry + 1);
249 }
250
251 /*
252 * If no AC line devices detected after boot, create an "online" event
253 * so that userland code can adjust power settings accordingly. The default
254 * power profile is "performance" so we don't need to repeat that here.
255 */
256 static void
acpi_acad_ac_only(void __unused * arg)257 acpi_acad_ac_only(void __unused *arg)
258 {
259
260 if (devclass_get_count(devclass_find("acpi_acad")) == 0)
261 acpi_UserNotify("ACAD", ACPI_ROOT_OBJECT, 1);
262 }
263
264 /*
265 * Public interfaces.
266 */
267 int
acpi_acad_get_acline(int * status)268 acpi_acad_get_acline(int *status)
269 {
270 struct acpi_acad_softc *sc;
271 device_t dev;
272
273 dev = devclass_get_device(devclass_find("acpi_acad"), 0);
274 if (dev == NULL)
275 return (ENXIO);
276 sc = device_get_softc(dev);
277
278 acpi_acad_get_status(dev);
279 *status = sc->status;
280
281 return (0);
282 }
283