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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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <sys/param.h>
31 #include <sys/bus.h>
32 #include <sys/condvar.h>
33 #include <sys/conf.h>
34 #include <sys/fcntl.h>
35 #include <sys/kernel.h>
36 #include <sys/sysctl.h>
37 #include <sys/uio.h>
38 #include <vm/vm.h>
39 #include <vm/pmap.h>
40
41 #include <contrib/dev/acpica/acpi.h>
42 #include <dev/acpica/acpivar.h>
43 #include <dev/acpica/acpiio.h>
44
45 /*
46  * APM driver emulation 
47  */
48
49 #include <sys/selinfo.h>
50
51 #include <machine/apm_bios.h>
52 #include <machine/pc/bios.h>
53
54 #include <i386/bios/apm.h>
55
56 SYSCTL_DECL(_debug_acpi);
57
58 uint32_t acpi_resume_beep;
59 TUNABLE_INT("debug.acpi.resume_beep", &acpi_resume_beep);
60 SYSCTL_UINT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RW, &acpi_resume_beep,
61     0, "Beep the PC speaker when resuming");
62 uint32_t acpi_reset_video;
63 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
64
65 static int intr_model = ACPI_INTR_PIC;
66 static int apm_active;
67
68 static d_open_t apmopen;
69 static d_close_t apmclose;
70 static d_write_t apmwrite;
71 static d_ioctl_t apmioctl;
72 static d_poll_t apmpoll;
73
74 static struct cdevsw apm_cdevsw = {
75         .d_version =    D_VERSION,
76         .d_open =       apmopen,
77         .d_close =      apmclose,
78         .d_write =      apmwrite,
79         .d_ioctl =      apmioctl,
80         .d_poll =       apmpoll,
81         .d_name =       "apm",
82 };
83
84 static int
85 acpi_capm_convert_battstate(struct  acpi_battinfo *battp)
86 {
87         int     state;
88
89         state = APM_UNKNOWN;
90
91         if (battp->state & ACPI_BATT_STAT_DISCHARG) {
92                 if (battp->cap >= 50)
93                         state = 0;      /* high */
94                 else
95                         state = 1;      /* low */
96         }
97         if (battp->state & ACPI_BATT_STAT_CRITICAL)
98                 state = 2;              /* critical */
99         if (battp->state & ACPI_BATT_STAT_CHARGING)
100                 state = 3;              /* charging */
101
102         /* If still unknown, determine it based on the battery capacity. */
103         if (state == APM_UNKNOWN) {
104                 if (battp->cap >= 50)
105                         state = 0;      /* high */
106                 else
107                         state = 1;      /* low */
108         }
109
110         return (state);
111 }
112
113 static int
114 acpi_capm_convert_battflags(struct  acpi_battinfo *battp)
115 {
116         int     flags;
117
118         flags = 0;
119
120         if (battp->cap >= 50)
121                 flags |= APM_BATT_HIGH;
122         else {
123                 if (battp->state & ACPI_BATT_STAT_CRITICAL)
124                         flags |= APM_BATT_CRITICAL;
125                 else
126                         flags |= APM_BATT_LOW;
127         }
128         if (battp->state & ACPI_BATT_STAT_CHARGING)
129                 flags |= APM_BATT_CHARGING;
130         if (battp->state == ACPI_BATT_STAT_NOT_PRESENT)
131                 flags = APM_BATT_NOT_PRESENT;
132
133         return (flags);
134 }
135
136 static int
137 acpi_capm_get_info(apm_info_t aip)
138 {
139         int     acline;
140         struct  acpi_battinfo batt;
141
142         aip->ai_infoversion = 1;
143         aip->ai_major       = 1;
144         aip->ai_minor       = 2;
145         aip->ai_status      = apm_active;
146         aip->ai_capabilities= 0xff00;   /* unknown */
147
148         if (acpi_acad_get_acline(&acline))
149                 aip->ai_acline = APM_UNKNOWN;   /* unknown */
150         else
151                 aip->ai_acline = acline;        /* on/off */
152
153         if (acpi_battery_get_battinfo(NULL, &batt) != 0) {
154                 aip->ai_batt_stat = APM_UNKNOWN;
155                 aip->ai_batt_life = APM_UNKNOWN;
156                 aip->ai_batt_time = -1;          /* unknown */
157                 aip->ai_batteries = ~0U;         /* unknown */
158         } else {
159                 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
160                 aip->ai_batt_life = batt.cap;
161                 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
162                 aip->ai_batteries = acpi_battery_get_units();
163         }
164
165         return (0);
166 }
167
168 static int
169 acpi_capm_get_pwstatus(apm_pwstatus_t app)
170 {
171         device_t dev;
172         int     acline, unit, error;
173         struct  acpi_battinfo batt;
174
175         if (app->ap_device != PMDV_ALLDEV &&
176             (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL))
177                 return (1);
178
179         if (app->ap_device == PMDV_ALLDEV)
180                 error = acpi_battery_get_battinfo(NULL, &batt);
181         else {
182                 unit = app->ap_device - PMDV_BATT0;
183                 dev = devclass_get_device(devclass_find("battery"), unit);
184                 if (dev != NULL)
185                         error = acpi_battery_get_battinfo(dev, &batt);
186                 else
187                         error = ENXIO;
188         }
189         if (error)
190                 return (1);
191
192         app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
193         app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
194         app->ap_batt_life = batt.cap;
195         app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
196
197         if (acpi_acad_get_acline(&acline))
198                 app->ap_acline = APM_UNKNOWN;
199         else
200                 app->ap_acline = acline;        /* on/off */
201
202         return (0);
203 }
204
205 static int
206 apmopen(struct cdev *dev, int flag, int fmt, d_thread_t *td)
207 {
208         return (0);
209 }
210
211 static int
212 apmclose(struct cdev *dev, int flag, int fmt, d_thread_t *td)
213 {
214         return (0);
215 }
216
217 static int
218 apmioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
219 {
220         int     error = 0;
221         struct  acpi_softc *acpi_sc;
222         struct apm_info info;
223         apm_info_old_t aiop;
224
225         acpi_sc = devclass_get_softc(devclass_find("acpi"), 0);
226
227         switch (cmd) {
228         case APMIO_SUSPEND:
229                 if ((flag & FWRITE) == 0)
230                         return (EPERM);
231                 if (apm_active)
232                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
233                 else
234                         error = EINVAL;
235                 break;
236         case APMIO_STANDBY:
237                 if ((flag & FWRITE) == 0)
238                         return (EPERM);
239                 if (apm_active)
240                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
241                 else
242                         error = EINVAL;
243                 break;
244         case APMIO_GETINFO_OLD:
245                 if (acpi_capm_get_info(&info))
246                         error = ENXIO;
247                 aiop = (apm_info_old_t)addr;
248                 aiop->ai_major = info.ai_major;
249                 aiop->ai_minor = info.ai_minor;
250                 aiop->ai_acline = info.ai_acline;
251                 aiop->ai_batt_stat = info.ai_batt_stat;
252                 aiop->ai_batt_life = info.ai_batt_life;
253                 aiop->ai_status = info.ai_status;
254                 break;
255         case APMIO_GETINFO:
256                 if (acpi_capm_get_info((apm_info_t)addr))
257                         error = ENXIO;
258                 break;
259         case APMIO_GETPWSTATUS:
260                 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
261                         error = ENXIO;
262                 break;
263         case APMIO_ENABLE:
264                 if ((flag & FWRITE) == 0)
265                         return (EPERM);
266                 apm_active = 1;
267                 break;
268         case APMIO_DISABLE:
269                 if ((flag & FWRITE) == 0)
270                         return (EPERM);
271                 apm_active = 0;
272                 break;
273         case APMIO_HALTCPU:
274                 break;
275         case APMIO_NOTHALTCPU:
276                 break;
277         case APMIO_DISPLAY:
278                 if ((flag & FWRITE) == 0)
279                         return (EPERM);
280                 break;
281         case APMIO_BIOS:
282                 if ((flag & FWRITE) == 0)
283                         return (EPERM);
284                 bzero(addr, sizeof(struct apm_bios_arg));
285                 break;
286         default:
287                 error = EINVAL;
288                 break;
289         }
290
291         return (error);
292 }
293
294 static int
295 apmwrite(struct cdev *dev, struct uio *uio, int ioflag)
296 {
297         return (uio->uio_resid);
298 }
299
300 static int
301 apmpoll(struct cdev *dev, int events, d_thread_t *td)
302 {
303         return (0);
304 }
305
306 static void
307 acpi_capm_init(struct acpi_softc *sc)
308 {
309         make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm");
310 }
311
312 int
313 acpi_machdep_init(device_t dev)
314 {
315         struct  acpi_softc *sc;
316
317         sc = devclass_get_softc(devclass_find("acpi"), 0);
318         acpi_capm_init(sc);
319
320         acpi_install_wakeup_handler(sc);
321
322         if (intr_model == ACPI_INTR_PIC)
323                 BUS_CONFIG_INTR(dev, AcpiGbl_FADT.SciInterrupt,
324                     INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
325         else
326                 acpi_SetIntrModel(intr_model);
327
328         SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
329             SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
330             "reset_video", CTLFLAG_RW, &acpi_reset_video, 0,
331             "Call the VESA reset BIOS vector on the resume path");
332
333         return (0);
334 }
335
336 void
337 acpi_SetDefaultIntrModel(int model)
338 {
339
340         intr_model = model;
341 }
342
343 /* Check BIOS date.  If 1998 or older, disable ACPI. */
344 int
345 acpi_machdep_quirks(int *quirks)
346 {
347         char *va;
348         int year;
349
350         /* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */
351         va = pmap_mapbios(0xffff0, 16);
352         sscanf(va + 11, "%2d", &year);
353         pmap_unmapbios((vm_offset_t)va, 16);
354
355         /* 
356          * Date must be >= 1/1/1999 or we don't trust ACPI.  Note that this
357          * check must be changed by my 114th birthday.
358          */
359         if (year > 90 && year < 99)
360                 *quirks = ACPI_Q_BROKEN;
361
362         return (0);
363 }
364
365 void
366 acpi_cpu_c1()
367 {
368         __asm __volatile("sti; hlt");
369 }