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 * $FreeBSD$ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/bus.h> 31 #include <sys/conf.h> 32 #include <sys/fcntl.h> 33 #include <sys/uio.h> 34 35 #include "acpi.h" 36 37 #include <dev/acpica/acpivar.h> 38 #include <dev/acpica/acpiio.h> 39 40 static device_t acpi_dev; 41 42 /* 43 * APM driver emulation 44 */ 45 46 #include <sys/selinfo.h> 47 48 #include <machine/apm_bios.h> 49 #include <machine/pc/bios.h> 50 51 #include <i386/apm/apm.h> 52 53 static struct apm_softc apm_softc; 54 55 static d_open_t apmopen; 56 static d_close_t apmclose; 57 static d_write_t apmwrite; 58 static d_ioctl_t apmioctl; 59 static d_poll_t apmpoll; 60 61 #define CDEV_MAJOR 39 62 static struct cdevsw apm_cdevsw = { 63 /* open */ apmopen, 64 /* close */ apmclose, 65 /* read */ noread, 66 /* write */ apmwrite, 67 /* ioctl */ apmioctl, 68 /* poll */ apmpoll, 69 /* mmap */ nommap, 70 /* strategy */ nostrategy, 71 /* name */ "apm", 72 /* maj */ CDEV_MAJOR, 73 /* dump */ nodump, 74 /* psize */ nopsize, 75 /* flags */ 0, 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 } 92 if (battp->state & ACPI_BATT_STAT_CRITICAL) { 93 state = 2; /* critical */ 94 } 95 if (battp->state & ACPI_BATT_STAT_CHARGING) { 96 state = 3; /* charging */ 97 } 98 return (state); 99 } 100 101 static int 102 acpi_capm_convert_battflags(struct acpi_battinfo *battp) 103 { 104 int flags; 105 106 flags = 0; 107 108 if (battp->cap >= 50) { 109 flags |= APM_BATT_HIGH; 110 } else { 111 if (battp->state & ACPI_BATT_STAT_CRITICAL) { 112 flags |= APM_BATT_CRITICAL; 113 } else { 114 flags |= APM_BATT_LOW; 115 } 116 } 117 if (battp->state & ACPI_BATT_STAT_CHARGING) { 118 flags |= APM_BATT_CHARGING; 119 } 120 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) { 121 flags = APM_BATT_NOT_PRESENT; 122 } 123 124 return (flags); 125 } 126 127 static int 128 acpi_capm_get_info(apm_info_t aip) 129 { 130 int acline; 131 struct acpi_battinfo batt; 132 133 aip->ai_infoversion = 1; 134 aip->ai_major = 1; 135 aip->ai_minor = 2; 136 aip->ai_status = apm_softc.active; 137 aip->ai_capabilities= 0xff00; /* XXX unknown */ 138 139 if (acpi_acad_get_acline(&acline)) { 140 aip->ai_acline = 0xff; /* unknown */ 141 } else { 142 aip->ai_acline = acline; /* on/off */ 143 } 144 145 if (acpi_battery_get_battinfo(-1, &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 int batt_unit; 164 int acline; 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 } 171 172 if (app->ap_device == PMDV_ALLDEV) { 173 batt_unit = -1; /* all units */ 174 } else { 175 batt_unit = app->ap_device - PMDV_BATT0; 176 } 177 178 if (acpi_battery_get_battinfo(batt_unit, &batt)) { 179 return (1); 180 } 181 182 app->ap_batt_stat = acpi_capm_convert_battstate(&batt); 183 app->ap_batt_flag = acpi_capm_convert_battflags(&batt); 184 app->ap_batt_life = batt.cap; 185 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 186 187 if (acpi_acad_get_acline(&acline)) { 188 app->ap_acline = 0xff; /* unknown */ 189 } else { 190 app->ap_acline = acline; /* on/off */ 191 } 192 193 return (0); 194 } 195 196 static int 197 apmopen(dev_t dev, int flag, int fmt, struct thread *td) 198 { 199 return (0); 200 } 201 202 static int 203 apmclose(dev_t dev, int flag, int fmt, struct thread *td) 204 { 205 return (0); 206 } 207 208 static int 209 apmioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 210 { 211 int error = 0; 212 struct acpi_softc *acpi_sc; 213 struct apm_info info; 214 apm_info_old_t aiop; 215 216 if ((acpi_sc = device_get_softc(acpi_dev)) == NULL) { 217 return (ENXIO); 218 } 219 220 switch (cmd) { 221 case APMIO_SUSPEND: 222 if (!(flag & FWRITE)) 223 return (EPERM); 224 if (apm_softc.active) 225 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx); 226 else 227 error = EINVAL; 228 break; 229 230 case APMIO_STANDBY: 231 if (!(flag & FWRITE)) 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; 238 239 case APMIO_GETINFO_OLD: 240 if (acpi_capm_get_info(&info)) 241 error = ENXIO; 242 aiop = (apm_info_old_t)addr; 243 aiop->ai_major = info.ai_major; 244 aiop->ai_minor = info.ai_minor; 245 aiop->ai_acline = info.ai_acline; 246 aiop->ai_batt_stat = info.ai_batt_stat; 247 aiop->ai_batt_life = info.ai_batt_life; 248 aiop->ai_status = info.ai_status; 249 break; 250 251 case APMIO_GETINFO: 252 if (acpi_capm_get_info((apm_info_t)addr)) 253 error = ENXIO; 254 255 break; 256 257 case APMIO_GETPWSTATUS: 258 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr)) 259 error = ENXIO; 260 break; 261 262 case APMIO_ENABLE: 263 if (!(flag & FWRITE)) 264 return (EPERM); 265 apm_softc.active = 1; 266 break; 267 268 case APMIO_DISABLE: 269 if (!(flag & FWRITE)) 270 return (EPERM); 271 apm_softc.active = 0; 272 break; 273 274 case APMIO_HALTCPU: 275 break; 276 277 case APMIO_NOTHALTCPU: 278 break; 279 280 case APMIO_DISPLAY: 281 if (!(flag & FWRITE)) 282 return (EPERM); 283 break; 284 285 case APMIO_BIOS: 286 if (!(flag & FWRITE)) 287 return (EPERM); 288 bzero(addr, sizeof(struct apm_bios_arg)); 289 break; 290 291 default: 292 error = EINVAL; 293 break; 294 } 295 296 return (error); 297 } 298 299 static int 300 apmwrite(dev_t dev, struct uio *uio, int ioflag) 301 { 302 303 return (uio->uio_resid); 304 } 305 306 static int 307 apmpoll(dev_t dev, int events, struct thread *td) 308 { 309 return (0); 310 } 311 312 static void 313 acpi_capm_init(struct acpi_softc *sc) 314 { 315 316 make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm"); 317 } 318 319 int 320 acpi_machdep_init(device_t dev) 321 { 322 struct acpi_softc *sc; 323 324 acpi_dev = dev; 325 if ((sc = device_get_softc(acpi_dev)) == NULL) { 326 return (ENXIO); 327 } 328 329 acpi_capm_init(sc); 330 331 acpi_install_wakeup_handler(sc); 332 333 return (0); 334 } 335 336