| 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 | } |