acpi_apm.c revision 128932 
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 128932 2004-05-04 21:04:24Z jhb $");
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	acpi_sc = device_get_softc(acpi_dev);
227
228	switch (cmd) {
229	case APMIO_SUSPEND:
230		if ((flag & FWRITE) == 0)
231			return (EPERM);
232		if (apm_softc.active)
233			acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
234		else
235			error = EINVAL;
236		break;
237	case APMIO_STANDBY:
238		if ((flag & FWRITE) == 0)
239			return (EPERM);
240		if (apm_softc.active)
241			acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
242		else
243			error = EINVAL;
244		break;
245	case APMIO_GETINFO_OLD:
246		if (acpi_capm_get_info(&info))
247			error = ENXIO;
248		aiop = (apm_info_old_t)addr;
249		aiop->ai_major = info.ai_major;
250		aiop->ai_minor = info.ai_minor;
251		aiop->ai_acline = info.ai_acline;
252		aiop->ai_batt_stat = info.ai_batt_stat;
253		aiop->ai_batt_life = info.ai_batt_life;
254		aiop->ai_status = info.ai_status;
255		break;
256	case APMIO_GETINFO:
257		if (acpi_capm_get_info((apm_info_t)addr))
258			error = ENXIO;
259		break;
260	case APMIO_GETPWSTATUS:
261		if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
262			error = ENXIO;
263		break;
264	case APMIO_ENABLE:
265		if ((flag & FWRITE) == 0)
266			return (EPERM);
267		apm_softc.active = 1;
268		break;
269	case APMIO_DISABLE:
270		if ((flag & FWRITE) == 0)
271			return (EPERM);
272		apm_softc.active = 0;
273		break;
274	case APMIO_HALTCPU:
275		break;
276	case APMIO_NOTHALTCPU:
277		break;
278	case APMIO_DISPLAY:
279		if ((flag & FWRITE) == 0)
280			return (EPERM);
281		break;
282	case APMIO_BIOS:
283		if ((flag & FWRITE) == 0)
284			return (EPERM);
285		bzero(addr, sizeof(struct apm_bios_arg));
286		break;
287	default:
288		error = EINVAL;
289		break;
290	}
291
292	return (error);
293}
294
295static int
296apmwrite(dev_t dev, struct uio *uio, int ioflag)
297{
298	return (uio->uio_resid);
299}
300
301static int
302apmpoll(dev_t dev, int events, d_thread_t *td)
303{
304	return (0);
305}
306
307static void
308acpi_capm_init(struct acpi_softc *sc)
309{
310        make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm");
311}
312
313int
314acpi_machdep_init(device_t dev)
315{
316	struct	acpi_softc *sc;
317
318	acpi_dev = dev;
319	sc = device_get_softc(acpi_dev);
320
321	/*
322	 * XXX: Prevent the PnP BIOS code from interfering with
323	 * our own scan of ISA devices.
324	 */
325	PnPBIOStable = NULL;
326
327	acpi_capm_init(sc);
328
329	acpi_install_wakeup_handler(sc);
330
331	if (intr_model == ACPI_INTR_PIC)
332		BUS_CONFIG_INTR(dev, AcpiGbl_FADT->SciInt, INTR_TRIGGER_LEVEL,
333		    INTR_POLARITY_LOW);
334	else
335		acpi_SetIntrModel(intr_model);
336
337	SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
338	    SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
339	    "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0,
340	    "Call the VESA reset BIOS vector on the resume path");
341
342	return (0);
343}
344
345void
346acpi_SetDefaultIntrModel(int model)
347{
348
349	intr_model = model;
350}
351