acpi_battery.c revision 105282
1/*- 2 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org> 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: head/sys/dev/acpica/acpi_battery.c 105282 2002-10-16 17:28:53Z jhb $ 27 */ 28 29#include "opt_acpi.h" /* XXX trim includes */ 30#include <sys/param.h> 31#include <sys/kernel.h> 32#include <sys/proc.h> 33#include <sys/malloc.h> 34#include <sys/bus.h> 35#include <sys/conf.h> 36#include <sys/ioccom.h> 37#include <sys/reboot.h> 38#include <sys/sysctl.h> 39#include <sys/ctype.h> 40 41#include <machine/clock.h> 42 43#include <machine/resource.h> 44 45#include "acpi.h" 46 47#include <dev/acpica/acpivar.h> 48#include <dev/acpica/acpiio.h> 49 50MALLOC_DEFINE(M_ACPIBATT, "acpibatt", "ACPI generic battery data"); 51 52/* 53 * ACPI Battery Abstruction Layer. 54 */ 55 56struct acpi_batteries { 57 TAILQ_ENTRY(acpi_batteries) link; 58 struct acpi_battdesc battdesc; 59}; 60 61static TAILQ_HEAD(,acpi_batteries) acpi_batteries; 62static int acpi_batteries_initted = 0; 63static int acpi_batteries_units = 0; 64static int acpi_battery_info_expire = 5; 65static struct acpi_battinfo acpi_battery_battinfo; 66 67int 68acpi_battery_get_units(void) 69{ 70 71 return (acpi_batteries_units); 72} 73 74int 75acpi_battery_get_battdesc(int logical_unit, struct acpi_battdesc *battdesc) 76{ 77 int i; 78 struct acpi_batteries *bp; 79 80 if (logical_unit < 0 || logical_unit >= acpi_batteries_units) { 81 return (ENXIO); 82 } 83 84 i = 0; 85 TAILQ_FOREACH(bp, &acpi_batteries, link) { 86 if (logical_unit == i) { 87 battdesc->type = bp->battdesc.type; 88 battdesc->phys_unit = bp->battdesc.phys_unit; 89 return (0); 90 } 91 i++; 92 } 93 94 return (ENXIO); 95} 96 97int 98acpi_battery_get_battinfo(int unit, struct acpi_battinfo *battinfo) 99{ 100 int error; 101 struct acpi_battdesc battdesc; 102 103 error = 0; 104 if (unit == -1) { 105 error = acpi_cmbat_get_battinfo(-1, battinfo); 106 goto out; 107 } else { 108 if ((error = acpi_battery_get_battdesc(unit, &battdesc)) != 0) { 109 goto out; 110 } 111 switch (battdesc.type) { 112 case ACPI_BATT_TYPE_CMBAT: 113 error = acpi_cmbat_get_battinfo(battdesc.phys_unit, 114 battinfo); 115 break; 116 default: 117 error = ENXIO; 118 break; 119 } 120 } 121out: 122 return (error); 123} 124 125int 126acpi_battery_get_info_expire(void) 127{ 128 129 return (acpi_battery_info_expire); 130} 131 132static int 133acpi_battery_ioctl(u_long cmd, caddr_t addr, void *arg) 134{ 135 int error; 136 int logical_unit; 137 union acpi_battery_ioctl_arg *ioctl_arg; 138 139 ioctl_arg = (union acpi_battery_ioctl_arg *)addr; 140 error = 0; 141 switch (cmd) { 142 case ACPIIO_BATT_GET_UNITS: 143 *(int *)addr = acpi_battery_get_units(); 144 break; 145 146 case ACPIIO_BATT_GET_BATTDESC: 147 logical_unit = ioctl_arg->unit; 148 error = acpi_battery_get_battdesc(logical_unit, &ioctl_arg->battdesc); 149 break; 150 151 case ACPIIO_BATT_GET_BATTINFO: 152 logical_unit = ioctl_arg->unit; 153 error = acpi_battery_get_battinfo(logical_unit, 154 &ioctl_arg->battinfo); 155 break; 156 157 default: 158 error = EINVAL; 159 break; 160 } 161 162 return (error); 163} 164 165static int 166acpi_battery_sysctl(SYSCTL_HANDLER_ARGS) 167{ 168 int val; 169 int error; 170 171 acpi_battery_get_battinfo(-1, &acpi_battery_battinfo); 172 val = *(u_int *)oidp->oid_arg1; 173 error = sysctl_handle_int(oidp, &val, 0, req); 174 return (error); 175} 176 177static int 178acpi_battery_init(void) 179{ 180 device_t dev; 181 struct acpi_softc *sc; 182 int error; 183 184 if ((dev = devclass_get_device(devclass_find("acpi"), 0)) == NULL) { 185 return (ENXIO); 186 } 187 if ((sc = device_get_softc(dev)) == NULL) { 188 return (ENXIO); 189 } 190 191 error = 0; 192 193 TAILQ_INIT(&acpi_batteries); 194 acpi_batteries_initted = 1; 195 196 if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_UNITS, 197 acpi_battery_ioctl, NULL)) != 0) { 198 return (error); 199 } 200 if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTDESC, 201 acpi_battery_ioctl, NULL)) != 0) { 202 return (error); 203 } 204 if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTINFO, 205 acpi_battery_ioctl, NULL)) != 0) { 206 return (error); 207 } 208 209 sysctl_ctx_init(&sc->acpi_battery_sysctl_ctx); 210 sc->acpi_battery_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_battery_sysctl_ctx, 211 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 212 OID_AUTO, "battery", CTLFLAG_RD, 0, ""); 213 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx, 214 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 215 OID_AUTO, "life", CTLTYPE_INT | CTLFLAG_RD, 216 &acpi_battery_battinfo.cap, 0, acpi_battery_sysctl, "I", ""); 217 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx, 218 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 219 OID_AUTO, "time", CTLTYPE_INT | CTLFLAG_RD, 220 &acpi_battery_battinfo.min, 0, acpi_battery_sysctl, "I", ""); 221 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx, 222 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 223 OID_AUTO, "state", CTLTYPE_INT | CTLFLAG_RD, 224 &acpi_battery_battinfo.state, 0, acpi_battery_sysctl, "I", ""); 225 SYSCTL_ADD_INT(&sc->acpi_battery_sysctl_ctx, 226 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 227 OID_AUTO, "units", CTLFLAG_RD, &acpi_batteries_units, 0, ""); 228 SYSCTL_ADD_INT(&sc->acpi_battery_sysctl_ctx, 229 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 230 OID_AUTO, "info_expire", CTLFLAG_RD | CTLFLAG_RW, 231 &acpi_battery_info_expire, 0, ""); 232 233 return (error); 234} 235 236int 237acpi_battery_register(int type, int phys_unit) 238{ 239 int error; 240 struct acpi_batteries *bp; 241 242 error = 0; 243 if ((bp = malloc(sizeof(*bp), M_ACPIBATT, M_NOWAIT)) == NULL) { 244 return(ENOMEM); 245 } 246 247 bp->battdesc.type = type; 248 bp->battdesc.phys_unit = phys_unit; 249 if (acpi_batteries_initted == 0) { 250 if ((error = acpi_battery_init()) != 0) { 251 free(bp, M_ACPIBATT); 252 return(error); 253 } 254 } 255 256 TAILQ_INSERT_TAIL(&acpi_batteries, bp, link); 257 acpi_batteries_units++; 258 259 return(0); 260} 261