i386: Allow UP kernel to use LAPIC timer and I/O APIC
[dragonfly.git] / sys / platform / pc32 / acpica5 / acpi_machdep.c
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: src/sys/i386/acpica/acpi_machdep.c,v 1.20 2004/05/05 19:51:15 njl Exp $
27  */
28
29 #include <sys/param.h>
30 #include <sys/bus.h>
31 #include <sys/conf.h>
32 #include <sys/device.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 #include <dev/acpica5/acpivar.h>
40 #include <dev/acpica5/acpiio.h>
41
42 static device_t acpi_dev;
43
44 /*
45  * APM driver emulation 
46  */
47
48 #include <sys/event.h>
49
50 #include <machine/apm_bios.h>
51 #include <machine/pc/bios.h>
52 #include <machine_base/apm/apm.h>
53 #include <machine_base/apic/ioapic.h>
54 #include <machine/smp.h>
55
56 uint32_t acpi_reset_video = 1;
57 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
58
59 static struct apm_softc apm_softc;
60
61 static d_open_t apmopen;
62 static d_close_t apmclose;
63 static d_write_t apmwrite;
64 static d_ioctl_t apmioctl;
65 static d_kqfilter_t apmkqfilter;
66
67 static struct dev_ops apm_ops = {
68         { "apm", 0, 0 },
69         .d_open = apmopen,
70         .d_close = apmclose,
71         .d_write = apmwrite,
72         .d_ioctl = apmioctl,
73         .d_kqfilter = apmkqfilter
74 };
75
76 static int
77 acpi_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         if (battp->state & ACPI_BATT_STAT_CRITICAL)
90                 state = 2;              /* critical */
91         if (battp->state & ACPI_BATT_STAT_CHARGING)
92                 state = 3;              /* charging */
93
94         /* If still unknown, determine it based on the battery capacity. */
95         if (state == 0xff) {
96                 if (battp->cap >= 50)
97                         state = 0;      /* high */
98                 else
99                         state = 1;      /* low */
100         }
101
102         return (state);
103 }
104
105 static int
106 acpi_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         if (battp->state & ACPI_BATT_STAT_CHARGING)
121                 flags |= APM_BATT_CHARGING;
122         if (battp->state == ACPI_BATT_STAT_NOT_PRESENT)
123                 flags = APM_BATT_NOT_PRESENT;
124
125         return (flags);
126 }
127
128 static int
129 acpi_capm_get_info(apm_info_t aip)
130 {
131         int     acline;
132         struct  acpi_battinfo batt;
133
134         aip->ai_infoversion = 1;
135         aip->ai_major       = 1;
136         aip->ai_minor       = 2;
137         aip->ai_status      = apm_softc.active;
138         aip->ai_capabilities= 0xff00;   /* XXX unknown */
139
140         if (acpi_acad_get_acline(&acline))
141                 aip->ai_acline = 0xff;          /* unknown */
142         else
143                 aip->ai_acline = acline;        /* on/off */
144
145         if (acpi_battery_get_battinfo(NULL, &batt)) {
146                 aip->ai_batt_stat = 0xff;       /* unknown */
147                 aip->ai_batt_life = 0xff;       /* unknown */
148                 aip->ai_batt_time = -1;         /* unknown */
149                 aip->ai_batteries = 0;
150         } else {
151                 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
152                 aip->ai_batt_life = batt.cap;
153                 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
154                 aip->ai_batteries = acpi_battery_get_units();
155         }
156
157         return (0);
158 }
159
160 static int
161 acpi_capm_get_pwstatus(apm_pwstatus_t app)
162 {
163         device_t dev;
164         int     acline, unit, error;
165         struct  acpi_battinfo batt;
166
167         if (app->ap_device != PMDV_ALLDEV &&
168             (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL))
169                 return (1);
170
171         if (app->ap_device == PMDV_ALLDEV)
172                 error = acpi_battery_get_battinfo(NULL, &batt);
173         else {
174                 unit = app->ap_device - PMDV_BATT0;
175                 dev = devclass_get_device(devclass_find("battery"), unit);
176                 if (dev != NULL)
177                         error = acpi_battery_get_battinfo(dev, &batt);
178                 else
179                         error = ENXIO;
180         }
181         if (error)
182                 return (1);
183
184         app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
185         app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
186         app->ap_batt_life = batt.cap;
187         app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
188
189         if (acpi_acad_get_acline(&acline))
190                 app->ap_acline = 0xff;          /* unknown */
191         else
192                 app->ap_acline = acline;        /* on/off */
193
194         return (0);
195 }
196
197 static int
198 apmopen(struct dev_open_args *ap)
199 {
200         return (0);
201 }
202
203 static int
204 apmclose(struct dev_close_args *ap)
205 {
206         return (0);
207 }
208
209 static int
210 apmioctl(struct dev_ioctl_args *ap)
211 {
212         int     error = 0;
213         struct  acpi_softc *acpi_sc;
214         struct apm_info info;
215         apm_info_old_t aiop;
216
217         acpi_sc = device_get_softc(acpi_dev);
218
219         switch (ap->a_cmd) {
220         case APMIO_SUSPEND:
221                 if ((ap->a_fflag & FWRITE) == 0)
222                         return (EPERM);
223                 if (apm_softc.active)
224                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
225                 else
226                         error = EINVAL;
227                 break;
228         case APMIO_STANDBY:
229                 if ((ap->a_fflag & FWRITE) == 0)
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         case APMIO_GETINFO_OLD:
237                 if (acpi_capm_get_info(&info))
238                         error = ENXIO;
239                 aiop = (apm_info_old_t)ap->a_data;
240                 aiop->ai_major = info.ai_major;
241                 aiop->ai_minor = info.ai_minor;
242                 aiop->ai_acline = info.ai_acline;
243                 aiop->ai_batt_stat = info.ai_batt_stat;
244                 aiop->ai_batt_life = info.ai_batt_life;
245                 aiop->ai_status = info.ai_status;
246                 break;
247         case APMIO_GETINFO:
248                 if (acpi_capm_get_info((apm_info_t)ap->a_data))
249                         error = ENXIO;
250                 break;
251         case APMIO_GETPWSTATUS:
252                 if (acpi_capm_get_pwstatus((apm_pwstatus_t)ap->a_data))
253                         error = ENXIO;
254                 break;
255         case APMIO_ENABLE:
256                 if ((ap->a_fflag & FWRITE) == 0)
257                         return (EPERM);
258                 apm_softc.active = 1;
259                 break;
260         case APMIO_DISABLE:
261                 if ((ap->a_fflag & FWRITE) == 0)
262                         return (EPERM);
263                 apm_softc.active = 0;
264                 break;
265         case APMIO_HALTCPU:
266                 break;
267         case APMIO_NOTHALTCPU:
268                 break;
269         case APMIO_DISPLAY:
270                 if ((ap->a_fflag & FWRITE) == 0)
271                         return (EPERM);
272                 break;
273         case APMIO_BIOS:
274                 if ((ap->a_fflag & FWRITE) == 0)
275                         return (EPERM);
276                 bzero(ap->a_data, sizeof(struct apm_bios_arg));
277                 break;
278         default:
279                 error = EINVAL;
280                 break;
281         }
282
283         return (error);
284 }
285
286 static int
287 apmwrite(struct dev_write_args *ap)
288 {
289         return (ap->a_uio->uio_resid);
290 }
291
292 static void apmfilter_detach(struct knote *);
293 static int apmfilter(struct knote *, long);
294
295 static struct filterops apmfilterops =
296         { FILTEROP_ISFD, NULL, apmfilter_detach, apmfilter };
297
298 static int
299 apmkqfilter(struct dev_kqfilter_args *ap)
300 {
301         struct knote *kn = ap->a_kn;
302
303         kn->kn_fop = &apmfilterops;
304         ap->a_result = 0;
305         return (0);
306 }
307
308 static void
309 apmfilter_detach(struct knote *kn) {}
310
311 static int
312 apmfilter(struct knote *kn, long hint)
313 {
314         return (0);
315 }
316
317 static void
318 acpi_capm_init(struct acpi_softc *sc)
319 {
320         make_dev(&apm_ops, 0, 0, 5, 0664, "apm");
321         make_dev(&apm_ops, 8, 0, 5, 0664, "apm");
322         kprintf("Warning: ACPI is disabling APM's device.  You can't run both\n");
323 }
324
325 int
326 acpi_machdep_init(device_t dev)
327 {
328         struct  acpi_softc *sc;
329         int intr_model;
330
331         acpi_dev = dev;
332         sc = device_get_softc(acpi_dev);
333
334         /*
335          * XXX: Prevent the PnP BIOS code from interfering with
336          * our own scan of ISA devices.
337          */
338         PnPBIOStable = NULL;
339
340         acpi_capm_init(sc);
341
342         acpi_install_wakeup_handler(sc);
343
344         if (ioapic_enable)
345                 intr_model = ACPI_INTR_APIC;
346         else
347                 intr_model = ACPI_INTR_PIC;
348
349         if (intr_model != ACPI_INTR_PIC)
350                 acpi_SetIntrModel(intr_model);
351
352         SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
353             SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
354             "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0,
355             "Call the VESA reset BIOS vector on the resume path");
356
357         return (0);
358 }