acpi_machdep.c revision 107144 
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 107144 2002-11-21 20:55:22Z jhb $
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/apm/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	/* open */	apmopen,
68	/* close */	apmclose,
69	/* read */	noread,
70	/* write */	apmwrite,
71	/* ioctl */	apmioctl,
72	/* poll */	apmpoll,
73	/* mmap */	nommap,
74	/* strategy */	nostrategy,
75	/* name */	"apm",
76	/* maj */	CDEV_MAJOR,
77	/* dump */	nodump,
78	/* psize */	nopsize,
79	/* flags */	0,
80};
81
82static int
83acpi_capm_convert_battstate(struct  acpi_battinfo *battp)
84{
85	int	state;
86
87	state = 0xff;	/* XXX unknown */
88
89	if (battp->state & ACPI_BATT_STAT_DISCHARG) {
90		if (battp->cap >= 50) {
91			state = 0;	/* high */
92		} else {
93			state = 1;	/* low */
94		}
95	}
96	if (battp->state & ACPI_BATT_STAT_CRITICAL) {
97		state = 2;		/* critical */
98	}
99	if (battp->state & ACPI_BATT_STAT_CHARGING) {
100		state = 3;		/* charging */
101	}
102	return (state);
103}
104
105static int
106acpi_capm_convert_battflags(struct  acpi_battinfo *battp)
107{
108	int	flags;
109
110	flags = 0;
111
112	if (battp->cap >= 50) {
113		flags |= APM_BATT_HIGH;
114	} else {
115		if (battp->state & ACPI_BATT_STAT_CRITICAL) {
116			flags |= APM_BATT_CRITICAL;
117		} else {
118			flags |= APM_BATT_LOW;
119		}
120	}
121	if (battp->state & ACPI_BATT_STAT_CHARGING) {
122		flags |= APM_BATT_CHARGING;
123	}
124	if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) {
125		flags = APM_BATT_NOT_PRESENT;
126	}
127
128	return (flags);
129}
130
131static int
132acpi_capm_get_info(apm_info_t aip)
133{
134	int	acline;
135	struct	acpi_battinfo batt;
136
137	aip->ai_infoversion = 1;
138	aip->ai_major       = 1;
139	aip->ai_minor       = 2;
140	aip->ai_status      = apm_softc.active;
141	aip->ai_capabilities= 0xff00;	/* XXX unknown */
142
143	if (acpi_acad_get_acline(&acline)) {
144		aip->ai_acline = 0xff;		/* unknown */
145	} else {
146		aip->ai_acline = acline;	/* on/off */
147	}
148
149	if (acpi_battery_get_battinfo(-1, &batt)) {
150		aip->ai_batt_stat = 0xff;	/* unknown */
151		aip->ai_batt_life = 0xff;	/* unknown */
152		aip->ai_batt_time = -1;		/* unknown */
153		aip->ai_batteries = 0;
154	} else {
155		aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
156		aip->ai_batt_life = batt.cap;
157		aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
158		aip->ai_batteries = acpi_battery_get_units();
159	}
160
161	return (0);
162}
163
164static int
165acpi_capm_get_pwstatus(apm_pwstatus_t app)
166{
167	int	batt_unit;
168	int	acline;
169	struct	acpi_battinfo batt;
170
171	if (app->ap_device != PMDV_ALLDEV &&
172	    (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) {
173		return (1);
174	}
175
176	if (app->ap_device == PMDV_ALLDEV) {
177		batt_unit = -1;			/* all units */
178	} else {
179		batt_unit = app->ap_device - PMDV_BATT0;
180	}
181
182	if (acpi_battery_get_battinfo(batt_unit, &batt)) {
183		return (1);
184	}
185
186	app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
187	app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
188	app->ap_batt_life = batt.cap;
189	app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
190
191	if (acpi_acad_get_acline(&acline)) {
192		app->ap_acline = 0xff;		/* unknown */
193	} else {
194		app->ap_acline = acline;	/* on/off */
195	}
196
197	return (0);
198}
199
200static int
201apmopen(dev_t dev, int flag, int fmt, d_thread_t *td)
202{
203	return (0);
204}
205
206static int
207apmclose(dev_t dev, int flag, int fmt, d_thread_t *td)
208{
209	return (0);
210}
211
212static int
213apmioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
214{
215	int	error = 0;
216	struct	acpi_softc *acpi_sc;
217	struct apm_info info;
218	apm_info_old_t aiop;
219
220	if ((acpi_sc = device_get_softc(acpi_dev)) == NULL) {
221		return (ENXIO);
222	}
223
224	switch (cmd) {
225	case APMIO_SUSPEND:
226		if (!(flag & FWRITE))
227			return (EPERM);
228		if (apm_softc.active)
229			acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
230		else
231			error = EINVAL;
232		break;
233
234	case APMIO_STANDBY:
235		if (!(flag & FWRITE))
236			return (EPERM);
237		if (apm_softc.active)
238			acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
239		else
240			error = EINVAL;
241		break;
242
243	case APMIO_GETINFO_OLD:
244		if (acpi_capm_get_info(&info))
245			error = ENXIO;
246		aiop = (apm_info_old_t)addr;
247		aiop->ai_major = info.ai_major;
248		aiop->ai_minor = info.ai_minor;
249		aiop->ai_acline = info.ai_acline;
250		aiop->ai_batt_stat = info.ai_batt_stat;
251		aiop->ai_batt_life = info.ai_batt_life;
252		aiop->ai_status = info.ai_status;
253		break;
254
255	case APMIO_GETINFO:
256		if (acpi_capm_get_info((apm_info_t)addr))
257			error = ENXIO;
258
259		break;
260
261	case APMIO_GETPWSTATUS:
262		if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
263			error = ENXIO;
264		break;
265
266	case APMIO_ENABLE:
267		if (!(flag & FWRITE))
268			return (EPERM);
269		apm_softc.active = 1;
270		break;
271
272	case APMIO_DISABLE:
273		if (!(flag & FWRITE))
274			return (EPERM);
275		apm_softc.active = 0;
276		break;
277
278	case APMIO_HALTCPU:
279		break;
280
281	case APMIO_NOTHALTCPU:
282		break;
283
284	case APMIO_DISPLAY:
285		if (!(flag & FWRITE))
286			return (EPERM);
287		break;
288
289	case APMIO_BIOS:
290		if (!(flag & FWRITE))
291			return (EPERM);
292		bzero(addr, sizeof(struct apm_bios_arg));
293		break;
294
295	default:
296		error = EINVAL;
297		break;
298	}
299
300	return (error);
301}
302
303static int
304apmwrite(dev_t dev, struct uio *uio, int ioflag)
305{
306
307	return (uio->uio_resid);
308}
309
310static int
311apmpoll(dev_t dev, int events, d_thread_t *td)
312{
313	return (0);
314}
315
316static void
317acpi_capm_init(struct acpi_softc *sc)
318{
319
320        make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm");
321}
322
323int
324acpi_machdep_init(device_t dev)
325{
326	struct	acpi_softc *sc;
327
328	acpi_dev = dev;
329	if ((sc = device_get_softc(acpi_dev)) == NULL) {
330		return (ENXIO);
331	}
332
333	/*
334	 * XXX: Prevent the PnP BIOS code from interfering with
335	 * our own scan of ISA devices.
336	 */
337	PnPBIOStable = NULL;
338
339	acpi_capm_init(sc);
340
341	acpi_install_wakeup_handler(sc);
342
343#ifdef SMP
344	acpi_SetIntrModel(ACPI_INTR_APIC);
345#endif
346	return (0);
347}
348
349