acpi_apm.c revision 85556 
1/*-
2 * Copyright (c) 2001 Mitsuru IWASAKI
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: head/sys/i386/acpica/acpi_machdep.c 85556 2001-10-26 17:43:05Z iwasaki $
27 */
28
29#include <sys/param.h>
30#include <sys/bus.h>
31#include <sys/conf.h>
32#include <sys/fcntl.h>
33#include <sys/uio.h>
34
35#include "acpi.h"
36
37#include <dev/acpica/acpivar.h>
38#include <dev/acpica/acpiio.h>
39
40static device_t	acpi_dev;
41
42/*
43 * APM driver emulation
44 */
45
46#include <sys/selinfo.h>
47
48#include <machine/apm_bios.h>
49#include <machine/pc/bios.h>
50
51#include <i386/apm/apm.h>
52
53static struct apm_softc	apm_softc;
54
55static d_open_t apmopen;
56static d_close_t apmclose;
57static d_write_t apmwrite;
58static d_ioctl_t apmioctl;
59static d_poll_t apmpoll;
60
61#define CDEV_MAJOR 39
62static struct cdevsw apm_cdevsw = {
63	/* open */	apmopen,
64	/* close */	apmclose,
65	/* read */	noread,
66	/* write */	apmwrite,
67	/* ioctl */	apmioctl,
68	/* poll */	apmpoll,
69	/* mmap */	nommap,
70	/* strategy */	nostrategy,
71	/* name */	"apm",
72	/* maj */	CDEV_MAJOR,
73	/* dump */	nodump,
74	/* psize */	nopsize,
75	/* flags */	0,
76};
77
78static int
79acpi_capm_convert_battstate(struct  acpi_battinfo *battp)
80{
81	int	state;
82
83	state = 0xff;	/* XXX unknown */
84
85	if (battp->state & ACPI_BATT_STAT_DISCHARG) {
86		if (battp->cap >= 50) {
87			state = 0;	/* high */
88		} else {
89			state = 1;	/* low */
90		}
91	}
92	if (battp->state & ACPI_BATT_STAT_CRITICAL) {
93		state = 2;		/* critical */
94	}
95	if (battp->state & ACPI_BATT_STAT_CHARGING) {
96		state = 3;		/* charging */
97	}
98	return (state);
99}
100
101static int
102acpi_capm_convert_battflags(struct  acpi_battinfo *battp)
103{
104	int	flags;
105
106	flags = 0;
107
108	if (battp->cap >= 50) {
109		flags |= APM_BATT_HIGH;
110	} else {
111		if (battp->state & ACPI_BATT_STAT_CRITICAL) {
112			flags |= APM_BATT_CRITICAL;
113		} else {
114			flags |= APM_BATT_LOW;
115		}
116	}
117	if (battp->state & ACPI_BATT_STAT_CHARGING) {
118		flags |= APM_BATT_CHARGING;
119	}
120	if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) {
121		flags = APM_BATT_NOT_PRESENT;
122	}
123
124	return (flags);
125}
126
127static int
128acpi_capm_get_info(apm_info_t aip)
129{
130	int	acline;
131	struct	acpi_battinfo batt;
132
133	aip->ai_infoversion = 1;
134	aip->ai_major       = 1;
135	aip->ai_minor       = 2;
136	aip->ai_status      = apm_softc.active;
137	aip->ai_capabilities= 0xff00;	/* XXX unknown */
138
139	if (acpi_acad_get_acline(&acline)) {
140		aip->ai_acline = 0xff;		/* unknown */
141	} else {
142		aip->ai_acline = acline;	/* on/off */
143	}
144
145	if (acpi_battery_get_battinfo(-1, &batt)) {
146		aip->ai_batt_stat = 0xff;	/* unknown */
147		aip->ai_batt_life = 0xff;	/* unknown */
148		aip->ai_batt_time = -1;		/* unknown */
149		aip->ai_batteries = 0;
150	} else {
151		aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
152		aip->ai_batt_life = batt.cap;
153		aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
154		aip->ai_batteries = acpi_battery_get_units();
155	}
156
157	return (0);
158}
159
160static int
161acpi_capm_get_pwstatus(apm_pwstatus_t app)
162{
163	int	batt_unit;
164	int	acline;
165	struct	acpi_battinfo batt;
166
167	if (app->ap_device != PMDV_ALLDEV &&
168	    (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) {
169		return (1);
170	}
171
172	if (app->ap_device == PMDV_ALLDEV) {
173		batt_unit = -1;			/* all units */
174	} else {
175		batt_unit = app->ap_device - PMDV_BATT0;
176	}
177
178	if (acpi_battery_get_battinfo(batt_unit, &batt)) {
179		return (1);
180	}
181
182	app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
183	app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
184	app->ap_batt_life = batt.cap;
185	app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
186
187	if (acpi_acad_get_acline(&acline)) {
188		app->ap_acline = 0xff;		/* unknown */
189	} else {
190		app->ap_acline = acline;	/* on/off */
191	}
192
193	return (0);
194}
195
196static int
197apmopen(dev_t dev, int flag, int fmt, struct thread *td)
198{
199	return (0);
200}
201
202static int
203apmclose(dev_t dev, int flag, int fmt, struct thread *td)
204{
205	return (0);
206}
207
208static int
209apmioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
210{
211	int	error = 0;
212	struct	acpi_softc *acpi_sc;
213	struct apm_info info;
214	apm_info_old_t aiop;
215
216	if ((acpi_sc = device_get_softc(acpi_dev)) == NULL) {
217		return (ENXIO);
218	}
219
220	switch (cmd) {
221	case APMIO_SUSPEND:
222		if (!(flag & FWRITE))
223			return (EPERM);
224		if (apm_softc.active)
225			acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
226		else
227			error = EINVAL;
228		break;
229
230	case APMIO_STANDBY:
231		if (!(flag & FWRITE))
232			return (EPERM);
233		if (apm_softc.active)
234			acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
235		else
236			error = EINVAL;
237		break;
238
239	case APMIO_GETINFO_OLD:
240		if (acpi_capm_get_info(&info))
241			error = ENXIO;
242		aiop = (apm_info_old_t)addr;
243		aiop->ai_major = info.ai_major;
244		aiop->ai_minor = info.ai_minor;
245		aiop->ai_acline = info.ai_acline;
246		aiop->ai_batt_stat = info.ai_batt_stat;
247		aiop->ai_batt_life = info.ai_batt_life;
248		aiop->ai_status = info.ai_status;
249		break;
250
251	case APMIO_GETINFO:
252		if (acpi_capm_get_info((apm_info_t)addr))
253			error = ENXIO;
254
255		break;
256
257	case APMIO_GETPWSTATUS:
258		if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
259			error = ENXIO;
260		break;
261
262	case APMIO_ENABLE:
263		if (!(flag & FWRITE))
264			return (EPERM);
265		apm_softc.active = 1;
266		break;
267
268	case APMIO_DISABLE:
269		if (!(flag & FWRITE))
270			return (EPERM);
271		apm_softc.active = 0;
272		break;
273
274	case APMIO_HALTCPU:
275		break;
276
277	case APMIO_NOTHALTCPU:
278		break;
279
280	case APMIO_DISPLAY:
281		if (!(flag & FWRITE))
282			return (EPERM);
283		break;
284
285	case APMIO_BIOS:
286		if (!(flag & FWRITE))
287			return (EPERM);
288		bzero(addr, sizeof(struct apm_bios_arg));
289		break;
290
291	default:
292		error = EINVAL;
293		break;
294	}
295
296	return (error);
297}
298
299static int
300apmwrite(dev_t dev, struct uio *uio, int ioflag)
301{
302
303	return (uio->uio_resid);
304}
305
306static int
307apmpoll(dev_t dev, int events, struct thread *td)
308{
309	return (0);
310}
311
312static void
313acpi_capm_init(struct acpi_softc *sc)
314{
315
316        make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm");
317}
318
319int
320acpi_machdep_init(device_t dev)
321{
322	struct	acpi_softc *sc;
323
324	acpi_dev = dev;
325	if ((sc = device_get_softc(acpi_dev)) == NULL) {
326		return (ENXIO);
327	}
328
329	acpi_capm_init(sc);
330
331	acpi_install_wakeup_handler(sc);
332
333	return (0);
334}
335
336