acpi_apm.c revision 112551 
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 112551 2003-03-24 19:14:46Z mdodd $
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#if __FreeBSD_version < 500000
47#include <sys/select.h>
48#else
49#include <sys/selinfo.h>
50#endif
51
52#include <machine/apm_bios.h>
53#include <machine/pc/bios.h>
54
55#include <i386/bios/apm.h>
56
57static struct apm_softc	apm_softc;
58
59static d_open_t apmopen;
60static d_close_t apmclose;
61static d_write_t apmwrite;
62static d_ioctl_t apmioctl;
63static d_poll_t apmpoll;
64
65#define CDEV_MAJOR 39
66static struct cdevsw apm_cdevsw = {
67	.d_open =	apmopen,
68	.d_close =	apmclose,
69	.d_write =	apmwrite,
70	.d_ioctl =	apmioctl,
71	.d_poll =	apmpoll,
72	.d_name =	"apm",
73	.d_maj =	CDEV_MAJOR,
74};
75
76static int
77acpi_capm_convert_battstate(struct  acpi_battinfo *battp)
78{
79	int	state;
80
81	state = 0xff;	/* XXX unknown */
82
83	if (battp->state & ACPI_BATT_STAT_DISCHARG) {
84		if (battp->cap >= 50) {
85			state = 0;	/* high */
86		} else {
87			state = 1;	/* low */
88		}
89	}
90	if (battp->state & ACPI_BATT_STAT_CRITICAL) {
91		state = 2;		/* critical */
92	}
93	if (battp->state & ACPI_BATT_STAT_CHARGING) {
94		state = 3;		/* charging */
95	}
96	return (state);
97}
98
99static int
100acpi_capm_convert_battflags(struct  acpi_battinfo *battp)
101{
102	int	flags;
103
104	flags = 0;
105
106	if (battp->cap >= 50) {
107		flags |= APM_BATT_HIGH;
108	} else {
109		if (battp->state & ACPI_BATT_STAT_CRITICAL) {
110			flags |= APM_BATT_CRITICAL;
111		} else {
112			flags |= APM_BATT_LOW;
113		}
114	}
115	if (battp->state & ACPI_BATT_STAT_CHARGING) {
116		flags |= APM_BATT_CHARGING;
117	}
118	if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) {
119		flags = APM_BATT_NOT_PRESENT;
120	}
121
122	return (flags);
123}
124
125static int
126acpi_capm_get_info(apm_info_t aip)
127{
128	int	acline;
129	struct	acpi_battinfo batt;
130
131	aip->ai_infoversion = 1;
132	aip->ai_major       = 1;
133	aip->ai_minor       = 2;
134	aip->ai_status      = apm_softc.active;
135	aip->ai_capabilities= 0xff00;	/* XXX unknown */
136
137	if (acpi_acad_get_acline(&acline)) {
138		aip->ai_acline = 0xff;		/* unknown */
139	} else {
140		aip->ai_acline = acline;	/* on/off */
141	}
142
143	if (acpi_battery_get_battinfo(-1, &batt)) {
144		aip->ai_batt_stat = 0xff;	/* unknown */
145		aip->ai_batt_life = 0xff;	/* unknown */
146		aip->ai_batt_time = -1;		/* unknown */
147		aip->ai_batteries = 0;
148	} else {
149		aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
150		aip->ai_batt_life = batt.cap;
151		aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
152		aip->ai_batteries = acpi_battery_get_units();
153	}
154
155	return (0);
156}
157
158static int
159acpi_capm_get_pwstatus(apm_pwstatus_t app)
160{
161	int	batt_unit;
162	int	acline;
163	struct	acpi_battinfo batt;
164
165	if (app->ap_device != PMDV_ALLDEV &&
166	    (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) {
167		return (1);
168	}
169
170	if (app->ap_device == PMDV_ALLDEV) {
171		batt_unit = -1;			/* all units */
172	} else {
173		batt_unit = app->ap_device - PMDV_BATT0;
174	}
175
176	if (acpi_battery_get_battinfo(batt_unit, &batt)) {
177		return (1);
178	}
179
180	app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
181	app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
182	app->ap_batt_life = batt.cap;
183	app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
184
185	if (acpi_acad_get_acline(&acline)) {
186		app->ap_acline = 0xff;		/* unknown */
187	} else {
188		app->ap_acline = acline;	/* on/off */
189	}
190
191	return (0);
192}
193
194static int
195apmopen(dev_t dev, int flag, int fmt, d_thread_t *td)
196{
197	return (0);
198}
199
200static int
201apmclose(dev_t dev, int flag, int fmt, d_thread_t *td)
202{
203	return (0);
204}
205
206static int
207apmioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
208{
209	int	error = 0;
210	struct	acpi_softc *acpi_sc;
211	struct apm_info info;
212	apm_info_old_t aiop;
213
214	if ((acpi_sc = device_get_softc(acpi_dev)) == NULL) {
215		return (ENXIO);
216	}
217
218	switch (cmd) {
219	case APMIO_SUSPEND:
220		if (!(flag & FWRITE))
221			return (EPERM);
222		if (apm_softc.active)
223			acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
224		else
225			error = EINVAL;
226		break;
227
228	case APMIO_STANDBY:
229		if (!(flag & FWRITE))
230			return (EPERM);
231		if (apm_softc.active)
232			acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
233		else
234			error = EINVAL;
235		break;
236
237	case APMIO_GETINFO_OLD:
238		if (acpi_capm_get_info(&info))
239			error = ENXIO;
240		aiop = (apm_info_old_t)addr;
241		aiop->ai_major = info.ai_major;
242		aiop->ai_minor = info.ai_minor;
243		aiop->ai_acline = info.ai_acline;
244		aiop->ai_batt_stat = info.ai_batt_stat;
245		aiop->ai_batt_life = info.ai_batt_life;
246		aiop->ai_status = info.ai_status;
247		break;
248
249	case APMIO_GETINFO:
250		if (acpi_capm_get_info((apm_info_t)addr))
251			error = ENXIO;
252
253		break;
254
255	case APMIO_GETPWSTATUS:
256		if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
257			error = ENXIO;
258		break;
259
260	case APMIO_ENABLE:
261		if (!(flag & FWRITE))
262			return (EPERM);
263		apm_softc.active = 1;
264		break;
265
266	case APMIO_DISABLE:
267		if (!(flag & FWRITE))
268			return (EPERM);
269		apm_softc.active = 0;
270		break;
271
272	case APMIO_HALTCPU:
273		break;
274
275	case APMIO_NOTHALTCPU:
276		break;
277
278	case APMIO_DISPLAY:
279		if (!(flag & FWRITE))
280			return (EPERM);
281		break;
282
283	case APMIO_BIOS:
284		if (!(flag & FWRITE))
285			return (EPERM);
286		bzero(addr, sizeof(struct apm_bios_arg));
287		break;
288
289	default:
290		error = EINVAL;
291		break;
292	}
293
294	return (error);
295}
296
297static int
298apmwrite(dev_t dev, struct uio *uio, int ioflag)
299{
300
301	return (uio->uio_resid);
302}
303
304static int
305apmpoll(dev_t dev, int events, d_thread_t *td)
306{
307	return (0);
308}
309
310static void
311acpi_capm_init(struct acpi_softc *sc)
312{
313
314        make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm");
315}
316
317int
318acpi_machdep_init(device_t dev)
319{
320	struct	acpi_softc *sc;
321
322	acpi_dev = dev;
323	if ((sc = device_get_softc(acpi_dev)) == NULL) {
324		return (ENXIO);
325	}
326
327	/*
328	 * XXX: Prevent the PnP BIOS code from interfering with
329	 * our own scan of ISA devices.
330	 */
331	PnPBIOStable = NULL;
332
333	acpi_capm_init(sc);
334
335	acpi_install_wakeup_handler(sc);
336
337#ifdef SMP
338	acpi_SetIntrModel(ACPI_INTR_APIC);
339#endif
340	return (0);
341}
342
343