acpi - Add kqueue support to apm emulation device
[dragonfly.git] / sys / platform / pc64 / 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  * $DragonFly: src/sys/platform/pc32/acpica5/acpi_machdep.c,v 1.14 2008/09/29 06:59:45 hasso Exp $
28  */
29
30 #include <sys/param.h>
31 #include <sys/bus.h>
32 #include <sys/conf.h>
33 #include <sys/device.h>
34 #include <sys/fcntl.h>
35 #include <sys/kernel.h>
36 #include <sys/sysctl.h>
37 #include <sys/uio.h>
38
39 #include "acpi.h"
40 #include <dev/acpica5/acpivar.h>
41 #include <dev/acpica5/acpiio.h>
42
43 static device_t acpi_dev;
44
45 /*
46  * APM driver emulation
47  */
48
49 #include <sys/selinfo.h>
50 #include <sys/event.h>
51
52 #include <machine/apm_bios.h>
53 #include <machine/pc/bios.h>
54 #include <machine_base/apm/apm.h>
55
56 uint32_t acpi_reset_video = 1;
57 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
58
59 static int intr_model = ACPI_INTR_PIC;
60 static struct apm_softc apm_softc;
61
62 static d_open_t apmopen;
63 static d_close_t apmclose;
64 static d_write_t apmwrite;
65 static d_ioctl_t apmioctl;
66 static d_poll_t apmpoll;
67 static d_kqfilter_t apmkqfilter;
68
69 #define CDEV_MAJOR 39
70 static struct dev_ops apm_ops = {
71         { "apm", CDEV_MAJOR, 0 },
72         .d_open = apmopen,
73         .d_close = apmclose,
74         .d_write = apmwrite,
75         .d_ioctl = apmioctl,
76         .d_poll = apmpoll,
77         .d_kqfilter = apmkqfilter
78 };
79
80 static int
81 acpi_capm_convert_battstate(struct  acpi_battinfo *battp)
82 {
83         int     state;
84
85         state = 0xff;   /* XXX unknown */
86
87         if (battp->state & ACPI_BATT_STAT_DISCHARG) {
88                 if (battp->cap >= 50)
89                         state = 0;      /* high */
90                 else
91                         state = 1;      /* low */
92         }
93         if (battp->state & ACPI_BATT_STAT_CRITICAL)
94                 state = 2;              /* critical */
95         if (battp->state & ACPI_BATT_STAT_CHARGING)
96                 state = 3;              /* charging */
97
98         /* If still unknown, determine it based on the battery capacity. */
99         if (state == 0xff) {
100                 if (battp->cap >= 50)
101                         state = 0;      /* high */
102                 else
103                         state = 1;      /* low */
104         }
105
106         return (state);
107 }
108
109 static int
110 acpi_capm_convert_battflags(struct  acpi_battinfo *battp)
111 {
112         int     flags;
113
114         flags = 0;
115
116         if (battp->cap >= 50)
117                 flags |= APM_BATT_HIGH;
118         else {
119                 if (battp->state & ACPI_BATT_STAT_CRITICAL)
120                         flags |= APM_BATT_CRITICAL;
121                 else
122                         flags |= APM_BATT_LOW;
123         }
124         if (battp->state & ACPI_BATT_STAT_CHARGING)
125                 flags |= APM_BATT_CHARGING;
126         if (battp->state == ACPI_BATT_STAT_NOT_PRESENT)
127                 flags = APM_BATT_NOT_PRESENT;
128
129         return (flags);
130 }
131
132 static int
133 acpi_capm_get_info(apm_info_t aip)
134 {
135         int     acline;
136         struct  acpi_battinfo batt;
137
138         aip->ai_infoversion = 1;
139         aip->ai_major       = 1;
140         aip->ai_minor       = 2;
141         aip->ai_status      = apm_softc.active;
142         aip->ai_capabilities= 0xff00;   /* XXX unknown */
143
144         if (acpi_acad_get_acline(&acline))
145                 aip->ai_acline = 0xff;          /* unknown */
146         else
147                 aip->ai_acline = acline;        /* on/off */
148
149         if (acpi_battery_get_battinfo(NULL, &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
164 static int
165 acpi_capm_get_pwstatus(apm_pwstatus_t app)
166 {
167         device_t dev;
168         int     acline, unit, error;
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         if (app->ap_device == PMDV_ALLDEV)
176                 error = acpi_battery_get_battinfo(NULL, &batt);
177         else {
178                 unit = app->ap_device - PMDV_BATT0;
179                 dev = devclass_get_device(devclass_find("battery"), unit);
180                 if (dev != NULL)
181                         error = acpi_battery_get_battinfo(dev, &batt);
182                 else
183                         error = ENXIO;
184         }
185         if (error)
186                 return (1);
187
188         app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
189         app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
190         app->ap_batt_life = batt.cap;
191         app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
192
193         if (acpi_acad_get_acline(&acline))
194                 app->ap_acline = 0xff;          /* unknown */
195         else
196                 app->ap_acline = acline;        /* on/off */
197
198         return (0);
199 }
200
201 static int
202 apmopen(struct dev_open_args *ap)
203 {
204         return (0);
205 }
206
207 static int
208 apmclose(struct dev_close_args *ap)
209 {
210         return (0);
211 }
212
213 static int
214 apmioctl(struct dev_ioctl_args *ap)
215 {
216         int     error = 0;
217         struct  acpi_softc *acpi_sc;
218         struct apm_info info;
219         apm_info_old_t aiop;
220
221         acpi_sc = device_get_softc(acpi_dev);
222
223         switch (ap->a_cmd) {
224         case APMIO_SUSPEND:
225                 if ((ap->a_fflag & FWRITE) == 0)
226                         return (EPERM);
227                 if (apm_softc.active)
228                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
229                 else
230                         error = EINVAL;
231                 break;
232         case APMIO_STANDBY:
233                 if ((ap->a_fflag & FWRITE) == 0)
234                         return (EPERM);
235                 if (apm_softc.active)
236                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
237                 else
238                         error = EINVAL;
239                 break;
240         case APMIO_GETINFO_OLD:
241                 if (acpi_capm_get_info(&info))
242                         error = ENXIO;
243                 aiop = (apm_info_old_t)ap->a_data;
244                 aiop->ai_major = info.ai_major;
245                 aiop->ai_minor = info.ai_minor;
246                 aiop->ai_acline = info.ai_acline;
247                 aiop->ai_batt_stat = info.ai_batt_stat;
248                 aiop->ai_batt_life = info.ai_batt_life;
249                 aiop->ai_status = info.ai_status;
250                 break;
251         case APMIO_GETINFO:
252                 if (acpi_capm_get_info((apm_info_t)ap->a_data))
253                         error = ENXIO;
254                 break;
255         case APMIO_GETPWSTATUS:
256                 if (acpi_capm_get_pwstatus((apm_pwstatus_t)ap->a_data))
257                         error = ENXIO;
258                 break;
259         case APMIO_ENABLE:
260                 if ((ap->a_fflag & FWRITE) == 0)
261                         return (EPERM);
262                 apm_softc.active = 1;
263                 break;
264         case APMIO_DISABLE:
265                 if ((ap->a_fflag & FWRITE) == 0)
266                         return (EPERM);
267                 apm_softc.active = 0;
268                 break;
269         case APMIO_HALTCPU:
270                 break;
271         case APMIO_NOTHALTCPU:
272                 break;
273         case APMIO_DISPLAY:
274                 if ((ap->a_fflag & FWRITE) == 0)
275                         return (EPERM);
276                 break;
277         case APMIO_BIOS:
278                 if ((ap->a_fflag & FWRITE) == 0)
279                         return (EPERM);
280                 bzero(ap->a_data, sizeof(struct apm_bios_arg));
281                 break;
282         default:
283                 error = EINVAL;
284                 break;
285         }
286
287         return (error);
288 }
289
290 static int
291 apmwrite(struct dev_write_args *ap)
292 {
293         return (ap->a_uio->uio_resid);
294 }
295
296 static int
297 apmpoll(struct dev_poll_args *ap)
298 {
299         ap->a_events = 0;
300         return (0);
301 }
302
303 static void apmfilter_detach(struct knote *);
304 static int apmfilter(struct knote *, long);
305
306 static struct filterops apmfilterops =
307         { 1, NULL, apmfilter_detach, apmfilter };
308
309 static int
310 apmkqfilter(struct dev_kqfilter_args *ap)
311 {
312         struct knote *kn = ap->a_kn;
313
314         kn->kn_fop = &apmfilterops;
315         ap->a_result = 0;
316         return (0);
317 }
318
319 static void
320 apmfilter_detach(struct knote *kn) {}
321
322 static int
323 apmfilter(struct knote *kn, long hint)
324 {
325         return (0);
326 }
327
328 static void
329 acpi_capm_init(struct acpi_softc *sc)
330 {
331         make_dev(&apm_ops, 0, 0, 5, 0664, "apm");
332         make_dev(&apm_ops, 8, 0, 5, 0664, "apm");
333         kprintf("Warning: ACPI is disabling APM's device.  You can't run both\n");
334 }
335
336 int
337 acpi_machdep_init(device_t dev)
338 {
339         struct  acpi_softc *sc;
340
341         acpi_dev = dev;
342         sc = device_get_softc(acpi_dev);
343
344         /*
345          * XXX: Prevent the PnP BIOS code from interfering with
346          * our own scan of ISA devices.
347          */
348 #if 0
349         PnPBIOStable = NULL;
350 #endif
351
352         acpi_capm_init(sc);
353
354         acpi_install_wakeup_handler(sc);
355
356         if (intr_model == ACPI_INTR_PIC)
357                 BUS_CONFIG_INTR(dev, dev, AcpiGbl_FADT.SciInterrupt,
358                     INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
359         else
360                 acpi_SetIntrModel(intr_model);
361
362         SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
363             SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
364             "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0,
365             "Call the VESA reset BIOS vector on the resume path");
366
367         return (0);
368 }
369
370 void
371 acpi_SetDefaultIntrModel(int model)
372 {
373
374         intr_model = model;
375 }