kernel - Tear out device polling
[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_kqfilter_t apmkqfilter;
67
68 #define CDEV_MAJOR 39
69 static struct dev_ops apm_ops = {
70         { "apm", CDEV_MAJOR, 0 },
71         .d_open = apmopen,
72         .d_close = apmclose,
73         .d_write = apmwrite,
74         .d_ioctl = apmioctl,
75         .d_kqfilter = apmkqfilter
76 };
77
78 static int
79 acpi_capm_convert_battstate(struct  acpi_battinfo *battp)
80 {
81         int     state;
82
83         state = 0xff;   /* XXX unknown */
84
85         if (battp->state & ACPI_BATT_STAT_DISCHARG) {
86                 if (battp->cap >= 50)
87                         state = 0;      /* high */
88                 else
89                         state = 1;      /* low */
90         }
91         if (battp->state & ACPI_BATT_STAT_CRITICAL)
92                 state = 2;              /* critical */
93         if (battp->state & ACPI_BATT_STAT_CHARGING)
94                 state = 3;              /* charging */
95
96         /* If still unknown, determine it based on the battery capacity. */
97         if (state == 0xff) {
98                 if (battp->cap >= 50)
99                         state = 0;      /* high */
100                 else
101                         state = 1;      /* low */
102         }
103
104         return (state);
105 }
106
107 static int
108 acpi_capm_convert_battflags(struct  acpi_battinfo *battp)
109 {
110         int     flags;
111
112         flags = 0;
113
114         if (battp->cap >= 50)
115                 flags |= APM_BATT_HIGH;
116         else {
117                 if (battp->state & ACPI_BATT_STAT_CRITICAL)
118                         flags |= APM_BATT_CRITICAL;
119                 else
120                         flags |= APM_BATT_LOW;
121         }
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;
126
127         return (flags);
128 }
129
130 static int
131 acpi_capm_get_info(apm_info_t aip)
132 {
133         int     acline;
134         struct  acpi_battinfo batt;
135
136         aip->ai_infoversion = 1;
137         aip->ai_major       = 1;
138         aip->ai_minor       = 2;
139         aip->ai_status      = apm_softc.active;
140         aip->ai_capabilities= 0xff00;   /* XXX unknown */
141
142         if (acpi_acad_get_acline(&acline))
143                 aip->ai_acline = 0xff;          /* unknown */
144         else
145                 aip->ai_acline = acline;        /* on/off */
146
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;
152         } else {
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();
157         }
158
159         return (0);
160 }
161
162 static int
163 acpi_capm_get_pwstatus(apm_pwstatus_t app)
164 {
165         device_t dev;
166         int     acline, unit, error;
167         struct  acpi_battinfo batt;
168
169         if (app->ap_device != PMDV_ALLDEV &&
170             (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL))
171                 return (1);
172
173         if (app->ap_device == PMDV_ALLDEV)
174                 error = acpi_battery_get_battinfo(NULL, &batt);
175         else {
176                 unit = app->ap_device - PMDV_BATT0;
177                 dev = devclass_get_device(devclass_find("battery"), unit);
178                 if (dev != NULL)
179                         error = acpi_battery_get_battinfo(dev, &batt);
180                 else
181                         error = ENXIO;
182         }
183         if (error)
184                 return (1);
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         return (0);
197 }
198
199 static int
200 apmopen(struct dev_open_args *ap)
201 {
202         return (0);
203 }
204
205 static int
206 apmclose(struct dev_close_args *ap)
207 {
208         return (0);
209 }
210
211 static int
212 apmioctl(struct dev_ioctl_args *ap)
213 {
214         int     error = 0;
215         struct  acpi_softc *acpi_sc;
216         struct apm_info info;
217         apm_info_old_t aiop;
218
219         acpi_sc = device_get_softc(acpi_dev);
220
221         switch (ap->a_cmd) {
222         case APMIO_SUSPEND:
223                 if ((ap->a_fflag & FWRITE) == 0)
224                         return (EPERM);
225                 if (apm_softc.active)
226                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
227                 else
228                         error = EINVAL;
229                 break;
230         case APMIO_STANDBY:
231                 if ((ap->a_fflag & FWRITE) == 0)
232                         return (EPERM);
233                 if (apm_softc.active)
234                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
235                 else
236                         error = EINVAL;
237                 break;
238         case APMIO_GETINFO_OLD:
239                 if (acpi_capm_get_info(&info))
240                         error = ENXIO;
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;
248                 break;
249         case APMIO_GETINFO:
250                 if (acpi_capm_get_info((apm_info_t)ap->a_data))
251                         error = ENXIO;
252                 break;
253         case APMIO_GETPWSTATUS:
254                 if (acpi_capm_get_pwstatus((apm_pwstatus_t)ap->a_data))
255                         error = ENXIO;
256                 break;
257         case APMIO_ENABLE:
258                 if ((ap->a_fflag & FWRITE) == 0)
259                         return (EPERM);
260                 apm_softc.active = 1;
261                 break;
262         case APMIO_DISABLE:
263                 if ((ap->a_fflag & FWRITE) == 0)
264                         return (EPERM);
265                 apm_softc.active = 0;
266                 break;
267         case APMIO_HALTCPU:
268                 break;
269         case APMIO_NOTHALTCPU:
270                 break;
271         case APMIO_DISPLAY:
272                 if ((ap->a_fflag & FWRITE) == 0)
273                         return (EPERM);
274                 break;
275         case APMIO_BIOS:
276                 if ((ap->a_fflag & FWRITE) == 0)
277                         return (EPERM);
278                 bzero(ap->a_data, sizeof(struct apm_bios_arg));
279                 break;
280         default:
281                 error = EINVAL;
282                 break;
283         }
284
285         return (error);
286 }
287
288 static int
289 apmwrite(struct dev_write_args *ap)
290 {
291         return (ap->a_uio->uio_resid);
292 }
293
294 static void apmfilter_detach(struct knote *);
295 static int apmfilter(struct knote *, long);
296
297 static struct filterops apmfilterops =
298         { 1, NULL, apmfilter_detach, apmfilter };
299
300 static int
301 apmkqfilter(struct dev_kqfilter_args *ap)
302 {
303         struct knote *kn = ap->a_kn;
304
305         kn->kn_fop = &apmfilterops;
306         ap->a_result = 0;
307         return (0);
308 }
309
310 static void
311 apmfilter_detach(struct knote *kn) {}
312
313 static int
314 apmfilter(struct knote *kn, long hint)
315 {
316         return (0);
317 }
318
319 static void
320 acpi_capm_init(struct acpi_softc *sc)
321 {
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");
325 }
326
327 int
328 acpi_machdep_init(device_t dev)
329 {
330         struct  acpi_softc *sc;
331
332         acpi_dev = dev;
333         sc = device_get_softc(acpi_dev);
334
335         /*
336          * XXX: Prevent the PnP BIOS code from interfering with
337          * our own scan of ISA devices.
338          */
339 #if 0
340         PnPBIOStable = NULL;
341 #endif
342
343         acpi_capm_init(sc);
344
345         acpi_install_wakeup_handler(sc);
346
347         if (intr_model == ACPI_INTR_PIC)
348                 BUS_CONFIG_INTR(dev, dev, AcpiGbl_FADT.SciInterrupt,
349                     INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
350         else
351                 acpi_SetIntrModel(intr_model);
352
353         SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
354             SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
355             "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0,
356             "Call the VESA reset BIOS vector on the resume path");
357
358         return (0);
359 }
360
361 void
362 acpi_SetDefaultIntrModel(int model)
363 {
364
365         intr_model = model;
366 }