acpi_apm.c revision 126080 
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
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/i386/acpica/acpi_machdep.c 126080 2004-02-21 21:10:55Z phk $");
29
30#include <sys/param.h>
31#include <sys/bus.h>
32#include <sys/conf.h>
33#include <sys/fcntl.h>
34#include <sys/kernel.h>
35#include <sys/sysctl.h>
36#include <sys/uio.h>
37
38#include "acpi.h"
39
40#include <dev/acpica/acpivar.h>
41#include <dev/acpica/acpiio.h>
42
43static device_t	acpi_dev;
44
45/*
46 * APM driver emulation
47 */
48
49#if __FreeBSD_version < 500000
50#include <sys/select.h>
51#else
52#include <sys/selinfo.h>
53#endif
54
55#include <machine/apm_bios.h>
56#include <machine/pc/bios.h>
57
58#if __FreeBSD_version < 500000
59#include <i386/apm/apm.h>
60#else
61#include <i386/bios/apm.h>
62#endif
63
64u_int32_t acpi_reset_video = 1;
65TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
66
67static struct apm_softc	apm_softc;
68
69static d_open_t apmopen;
70static d_close_t apmclose;
71static d_write_t apmwrite;
72static d_ioctl_t apmioctl;
73static d_poll_t apmpoll;
74
75static struct cdevsw apm_cdevsw = {
76	.d_version =	D_VERSION,
77	.d_flags =	D_NEEDGIANT,
78	.d_open =	apmopen,
79	.d_close =	apmclose,
80	.d_write =	apmwrite,
81	.d_ioctl =	apmioctl,
82	.d_poll =	apmpoll,
83	.d_name =	"apm",
84};
85
86static int intr_model = ACPI_INTR_PIC;
87
88static int
89acpi_capm_convert_battstate(struct  acpi_battinfo *battp)
90{
91	int	state;
92
93	state = 0xff;	/* XXX unknown */
94
95	if (battp->state & ACPI_BATT_STAT_DISCHARG) {
96		if (battp->cap >= 50)
97			state = 0;	/* high */
98		else
99			state = 1;	/* low */
100	}
101	if (battp->state & ACPI_BATT_STAT_CRITICAL)
102		state = 2;		/* critical */
103	if (battp->state & ACPI_BATT_STAT_CHARGING)
104		state = 3;		/* charging */
105
106	/* If still unknown, determine it based on the battery capacity. */
107	if (state == 0xff) {
108		if (battp->cap >= 50) {
109			state = 0;	/* high */
110		} else {
111			state = 1;	/* low */
112		}
113	}
114
115	return (state);
116}
117
118static int
119acpi_capm_convert_battflags(struct  acpi_battinfo *battp)
120{
121	int	flags;
122
123	flags = 0;
124
125	if (battp->cap >= 50) {
126		flags |= APM_BATT_HIGH;
127	} else {
128		if (battp->state & ACPI_BATT_STAT_CRITICAL)
129			flags |= APM_BATT_CRITICAL;
130		else
131			flags |= APM_BATT_LOW;
132	}
133	if (battp->state & ACPI_BATT_STAT_CHARGING)
134		flags |= APM_BATT_CHARGING;
135	if (battp->state == ACPI_BATT_STAT_NOT_PRESENT)
136		flags = APM_BATT_NOT_PRESENT;
137
138	return (flags);
139}
140
141static int
142acpi_capm_get_info(apm_info_t aip)
143{
144	int	acline;
145	struct	acpi_battinfo batt;
146
147	aip->ai_infoversion = 1;
148	aip->ai_major       = 1;
149	aip->ai_minor       = 2;
150	aip->ai_status      = apm_softc.active;
151	aip->ai_capabilities= 0xff00;	/* XXX unknown */
152
153	if (acpi_acad_get_acline(&acline))
154		aip->ai_acline = 0xff;		/* unknown */
155	else
156		aip->ai_acline = acline;	/* on/off */
157
158	if (acpi_battery_get_battinfo(-1, &batt)) {
159		aip->ai_batt_stat = 0xff;	/* unknown */
160		aip->ai_batt_life = 0xff;	/* unknown */
161		aip->ai_batt_time = -1;		/* unknown */
162		aip->ai_batteries = 0;
163	} else {
164		aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
165		aip->ai_batt_life = batt.cap;
166		aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
167		aip->ai_batteries = acpi_battery_get_units();
168	}
169
170	return (0);
171}
172
173static int
174acpi_capm_get_pwstatus(apm_pwstatus_t app)
175{
176	int	batt_unit;
177	int	acline;
178	struct	acpi_battinfo batt;
179
180	if (app->ap_device != PMDV_ALLDEV &&
181	    (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) {
182		return (1);
183	}
184
185	if (app->ap_device == PMDV_ALLDEV)
186		batt_unit = -1;			/* all units */
187	else
188		batt_unit = app->ap_device - PMDV_BATT0;
189
190	if (acpi_battery_get_battinfo(batt_unit, &batt))
191		return (1);
192
193	app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
194	app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
195	app->ap_batt_life = batt.cap;
196	app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
197
198	if (acpi_acad_get_acline(&acline))
199		app->ap_acline = 0xff;		/* unknown */
200	else
201		app->ap_acline = acline;	/* on/off */
202
203	return (0);
204}
205
206static int
207apmopen(dev_t dev, int flag, int fmt, d_thread_t *td)
208{
209	return (0);
210}
211
212static int
213apmclose(dev_t dev, int flag, int fmt, d_thread_t *td)
214{
215	return (0);
216}
217
218static int
219apmioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
220{
221	int	error = 0;
222	struct	acpi_softc *acpi_sc;
223	struct apm_info info;
224	apm_info_old_t aiop;
225
226	if ((acpi_sc = device_get_softc(acpi_dev)) == NULL)
227		return (ENXIO);
228
229	switch (cmd) {
230	case APMIO_SUSPEND:
231		if ((flag & FWRITE) == 0)
232			return (EPERM);
233		if (apm_softc.active)
234			acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
235		else
236			error = EINVAL;
237		break;
238	case APMIO_STANDBY:
239		if ((flag & FWRITE) == 0)
240			return (EPERM);
241		if (apm_softc.active)
242			acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
243		else
244			error = EINVAL;
245		break;
246	case APMIO_GETINFO_OLD:
247		if (acpi_capm_get_info(&info))
248			error = ENXIO;
249		aiop = (apm_info_old_t)addr;
250		aiop->ai_major = info.ai_major;
251		aiop->ai_minor = info.ai_minor;
252		aiop->ai_acline = info.ai_acline;
253		aiop->ai_batt_stat = info.ai_batt_stat;
254		aiop->ai_batt_life = info.ai_batt_life;
255		aiop->ai_status = info.ai_status;
256		break;
257	case APMIO_GETINFO:
258		if (acpi_capm_get_info((apm_info_t)addr))
259			error = ENXIO;
260		break;
261	case APMIO_GETPWSTATUS:
262		if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
263			error = ENXIO;
264		break;
265	case APMIO_ENABLE:
266		if ((flag & FWRITE) == 0)
267			return (EPERM);
268		apm_softc.active = 1;
269		break;
270	case APMIO_DISABLE:
271		if ((flag & FWRITE) == 0)
272			return (EPERM);
273		apm_softc.active = 0;
274		break;
275	case APMIO_HALTCPU:
276		break;
277	case APMIO_NOTHALTCPU:
278		break;
279	case APMIO_DISPLAY:
280		if ((flag & FWRITE) == 0)
281			return (EPERM);
282		break;
283	case APMIO_BIOS:
284		if ((flag & FWRITE) == 0)
285			return (EPERM);
286		bzero(addr, sizeof(struct apm_bios_arg));
287		break;
288	default:
289		error = EINVAL;
290		break;
291	}
292
293	return (error);
294}
295
296static int
297apmwrite(dev_t dev, struct uio *uio, int ioflag)
298{
299	return (uio->uio_resid);
300}
301
302static int
303apmpoll(dev_t dev, int events, d_thread_t *td)
304{
305	return (0);
306}
307
308static void
309acpi_capm_init(struct acpi_softc *sc)
310{
311        make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm");
312}
313
314int
315acpi_machdep_init(device_t dev)
316{
317	struct	acpi_softc *sc;
318
319	acpi_dev = dev;
320	if ((sc = device_get_softc(acpi_dev)) == NULL)
321		return (ENXIO);
322
323	/*
324	 * XXX: Prevent the PnP BIOS code from interfering with
325	 * our own scan of ISA devices.
326	 */
327	PnPBIOStable = NULL;
328
329	acpi_capm_init(sc);
330
331	acpi_install_wakeup_handler(sc);
332
333	if (intr_model != ACPI_INTR_PIC)
334		acpi_SetIntrModel(intr_model);
335
336	SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
337	    SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
338	    "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0,
339	    "Call the VESA reset BIOS vector on the resume path");
340
341	return (0);
342}
343
344void
345acpi_SetDefaultIntrModel(int model)
346{
347
348	intr_model = model;
349}
350