2 * Copyright (c) 2001 Mitsuru IWASAKI
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/sys/i386/acpica/acpi_machdep.c,v 1.20 2004/05/05 19:51:15 njl Exp $
29 #include <sys/param.h>
32 #include <sys/device.h>
33 #include <sys/fcntl.h>
34 #include <sys/kernel.h>
35 #include <sys/sysctl.h>
38 #include <machine/pmap.h>
41 #include <dev/acpica/acpivar.h>
42 #include <dev/acpica/acpiio.h>
44 static device_t acpi_dev;
47 * APM driver emulation
50 #include <sys/event.h>
52 #include <machine/apm_bios.h>
53 #include <machine/pc/bios.h>
54 #include <machine_base/apm/apm.h>
55 #include <machine_base/apic/ioapic.h>
56 #include <machine/smp.h>
58 uint32_t acpi_reset_video = 1;
59 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
61 static struct apm_softc apm_softc;
63 static d_open_t apmopen;
64 static d_close_t apmclose;
65 static d_write_t apmwrite;
66 static d_ioctl_t apmioctl;
67 static d_kqfilter_t apmkqfilter;
69 static struct dev_ops apm_ops = {
75 .d_kqfilter = apmkqfilter
79 acpi_capm_convert_battstate(struct acpi_battinfo *battp)
83 state = 0xff; /* XXX unknown */
85 if (battp->state & ACPI_BATT_STAT_DISCHARG) {
91 if (battp->state & ACPI_BATT_STAT_CRITICAL)
92 state = 2; /* critical */
93 if (battp->state & ACPI_BATT_STAT_CHARGING)
94 state = 3; /* charging */
96 /* If still unknown, determine it based on the battery capacity. */
108 acpi_capm_convert_battflags(struct acpi_battinfo *battp)
114 if (battp->cap >= 50)
115 flags |= APM_BATT_HIGH;
117 if (battp->state & ACPI_BATT_STAT_CRITICAL)
118 flags |= APM_BATT_CRITICAL;
120 flags |= APM_BATT_LOW;
122 if (battp->state & ACPI_BATT_STAT_CHARGING)
123 flags |= APM_BATT_CHARGING;
124 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT)
125 flags = APM_BATT_NOT_PRESENT;
131 acpi_capm_get_info(apm_info_t aip)
134 struct acpi_battinfo batt;
136 aip->ai_infoversion = 1;
139 aip->ai_status = apm_softc.active;
140 aip->ai_capabilities= 0xff00; /* XXX unknown */
142 if (acpi_acad_get_acline(&acline))
143 aip->ai_acline = 0xff; /* unknown */
145 aip->ai_acline = acline; /* on/off */
147 if (acpi_battery_get_battinfo(NULL, &batt)) {
148 aip->ai_batt_stat = 0xff; /* unknown */
149 aip->ai_batt_life = 0xff; /* unknown */
150 aip->ai_batt_time = -1; /* unknown */
151 aip->ai_batteries = 0;
153 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
154 aip->ai_batt_life = batt.cap;
155 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
156 aip->ai_batteries = acpi_battery_get_units();
163 acpi_capm_get_pwstatus(apm_pwstatus_t app)
166 int acline, unit, error;
167 struct acpi_battinfo batt;
169 if (app->ap_device != PMDV_ALLDEV &&
170 (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL))
173 if (app->ap_device == PMDV_ALLDEV)
174 error = acpi_battery_get_battinfo(NULL, &batt);
176 unit = app->ap_device - PMDV_BATT0;
177 dev = devclass_get_device(devclass_find("battery"), unit);
179 error = acpi_battery_get_battinfo(dev, &batt);
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;
191 if (acpi_acad_get_acline(&acline))
192 app->ap_acline = 0xff; /* unknown */
194 app->ap_acline = acline; /* on/off */
200 apmopen(struct dev_open_args *ap)
206 apmclose(struct dev_close_args *ap)
212 apmioctl(struct dev_ioctl_args *ap)
215 struct acpi_softc *acpi_sc;
216 struct apm_info info;
219 acpi_sc = device_get_softc(acpi_dev);
223 if ((ap->a_fflag & FWRITE) == 0)
225 if (apm_softc.active)
226 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
231 if ((ap->a_fflag & FWRITE) == 0)
233 if (apm_softc.active)
234 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
238 case APMIO_GETINFO_OLD:
239 if (acpi_capm_get_info(&info))
241 aiop = (apm_info_old_t)ap->a_data;
242 aiop->ai_major = info.ai_major;
243 aiop->ai_minor = info.ai_minor;
244 aiop->ai_acline = info.ai_acline;
245 aiop->ai_batt_stat = info.ai_batt_stat;
246 aiop->ai_batt_life = info.ai_batt_life;
247 aiop->ai_status = info.ai_status;
250 if (acpi_capm_get_info((apm_info_t)ap->a_data))
253 case APMIO_GETPWSTATUS:
254 if (acpi_capm_get_pwstatus((apm_pwstatus_t)ap->a_data))
258 if ((ap->a_fflag & FWRITE) == 0)
260 apm_softc.active = 1;
263 if ((ap->a_fflag & FWRITE) == 0)
265 apm_softc.active = 0;
269 case APMIO_NOTHALTCPU:
272 if ((ap->a_fflag & FWRITE) == 0)
276 if ((ap->a_fflag & FWRITE) == 0)
278 bzero(ap->a_data, sizeof(struct apm_bios_arg));
289 apmwrite(struct dev_write_args *ap)
291 return (ap->a_uio->uio_resid);
294 static void apmfilter_detach(struct knote *);
295 static int apmfilter(struct knote *, long);
297 static struct filterops apmfilterops =
298 { FILTEROP_ISFD, NULL, apmfilter_detach, apmfilter };
301 apmkqfilter(struct dev_kqfilter_args *ap)
303 struct knote *kn = ap->a_kn;
305 kn->kn_fop = &apmfilterops;
311 apmfilter_detach(struct knote *kn) {}
314 apmfilter(struct knote *kn, long hint)
320 acpi_capm_init(struct acpi_softc *sc)
322 make_dev(&apm_ops, 0, 0, 5, 0664, "apm");
323 make_dev(&apm_ops, 8, 0, 5, 0664, "apm");
324 kprintf("Warning: ACPI is disabling APM's device. You can't run both\n");
328 acpi_machdep_init(device_t dev)
330 struct acpi_softc *sc;
334 sc = device_get_softc(acpi_dev);
337 * XXX: Prevent the PnP BIOS code from interfering with
338 * our own scan of ISA devices.
344 acpi_install_wakeup_handler(sc);
347 intr_model = ACPI_INTR_APIC;
349 intr_model = ACPI_INTR_PIC;
351 if (intr_model != ACPI_INTR_PIC)
352 acpi_SetIntrModel(intr_model);
354 SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
355 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
356 "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0,
357 "Call the VESA reset BIOS vector on the resume path");
362 /* Check BIOS date. If 1998 or older, disable ACPI. */
364 acpi_machdep_quirks(int *quirks)
369 /* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */
370 va = pmap_mapbios(0xffff0, 16);
371 ksscanf(va + 11, "%2d", &year);
372 pmap_unmapdev((vm_offset_t)va, 16);
375 * Date must be >= 1/1/1999 or we don't trust ACPI.
377 if (year > 90 && year < 99)
378 *quirks = ACPI_Q_BROKEN;