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