acpi_battery.c revision 82372
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 82372 2001-08-26 22:50:15Z msmith $ 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/lock.h> 34#include <sys/malloc.h> 35#include <sys/mutex.h> 36#include <sys/bus.h> 37#include <sys/conf.h> 38#include <sys/ioccom.h> 39#include <sys/reboot.h> 40#include <sys/sysctl.h> 41#include <sys/ctype.h> 42 43#include <machine/clock.h> 44 45#include <machine/resource.h> 46 47#include "acpi.h" 48 49#include <dev/acpica/acpivar.h> 50#include <dev/acpica/acpiio.h> 51 52MALLOC_DEFINE(M_ACPIBATT, "acpibatt", "ACPI generic battery data"); 53 54/* 55 * ACPI Battery Abstruction Layer. 56 */ 57 58struct acpi_batteries { 59 TAILQ_ENTRY(acpi_batteries) link; 60 struct acpi_battdesc battdesc; 61}; 62 63static TAILQ_HEAD(,acpi_batteries) acpi_batteries; 64static int acpi_batteries_initted = 0; 65static int acpi_batteries_units = 0; 66static struct acpi_battinfo acpi_battery_battinfo; 67 68static int 69acpi_battery_get_units(void) 70{ 71 72 return (acpi_batteries_units); 73} 74 75static int 76acpi_battery_get_battdesc(int logical_unit, struct acpi_battdesc *battdesc) 77{ 78 int i; 79 struct acpi_batteries *bp; 80 81 if (logical_unit < 0 || logical_unit >= acpi_batteries_units) { 82 return (ENXIO); 83 } 84 85 i = 0; 86 TAILQ_FOREACH(bp, &acpi_batteries, link) { 87 if (logical_unit == i) { 88 battdesc->type = bp->battdesc.type; 89 battdesc->phys_unit = bp->battdesc.phys_unit; 90 return (0); 91 } 92 i++; 93 } 94 95 return (ENXIO); 96} 97 98static int 99acpi_battery_get_battinfo(int unit, struct acpi_battinfo *battinfo) 100{ 101 int error; 102 struct acpi_battdesc battdesc; 103 104 error = 0; 105 if (unit == -1) { 106 error = acpi_cmbat_get_battinfo(-1, battinfo); 107 goto out; 108 } else { 109 if ((error = acpi_battery_get_battdesc(unit, &battdesc)) != 0) { 110 goto out; 111 } 112 switch (battdesc.type) { 113 case ACPI_BATT_TYPE_CMBAT: 114 error = acpi_cmbat_get_battinfo(battdesc.phys_unit, 115 battinfo); 116 break; 117 default: 118 error = ENXIO; 119 break; 120 } 121 } 122out: 123 return (error); 124} 125 126static int 127acpi_battery_ioctl(u_long cmd, caddr_t addr, void *arg) 128{ 129 int error; 130 int logical_unit; 131 union acpi_battery_ioctl_arg *ioctl_arg; 132 133 ioctl_arg = (union acpi_battery_ioctl_arg *)addr; 134 error = 0; 135 switch (cmd) { 136 case ACPIIO_BATT_GET_UNITS: 137 *(int *)addr = acpi_battery_get_units(); 138 break; 139 140 case ACPIIO_BATT_GET_BATTDESC: 141 logical_unit = ioctl_arg->unit; 142 error = acpi_battery_get_battdesc(logical_unit, &ioctl_arg->battdesc); 143 break; 144 145 case ACPIIO_BATT_GET_BATTINFO: 146 logical_unit = ioctl_arg->unit; 147 error = acpi_battery_get_battinfo(logical_unit, 148 &ioctl_arg->battinfo); 149 break; 150 151 default: 152 error = EINVAL; 153 break; 154 } 155 156 return (error); 157} 158 159static int 160acpi_battery_sysctl(SYSCTL_HANDLER_ARGS) 161{ 162 int val; 163 int error; 164 165 acpi_battery_get_battinfo(-1, &acpi_battery_battinfo); 166 val = *(u_int *)oidp->oid_arg1; 167 error = sysctl_handle_int(oidp, &val, 0, req); 168 return (error); 169} 170 171static int 172acpi_battery_init(void) 173{ 174 device_t dev; 175 struct acpi_softc *sc; 176 int error; 177 178 if ((dev = devclass_get_device(acpi_devclass, 0)) == NULL) { 179 return (ENXIO); 180 } 181 if ((sc = device_get_softc(dev)) == NULL) { 182 return (ENXIO); 183 } 184 185 error = 0; 186 187 TAILQ_INIT(&acpi_batteries); 188 acpi_batteries_initted = 1; 189 190 if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_UNITS, 191 acpi_battery_ioctl, NULL)) != 0) { 192 return (error); 193 } 194 if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTDESC, 195 acpi_battery_ioctl, NULL)) != 0) { 196 return (error); 197 } 198 if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTINFO, 199 acpi_battery_ioctl, NULL)) != 0) { 200 return (error); 201 } 202 203 sysctl_ctx_init(&sc->acpi_battery_sysctl_ctx); 204 sc->acpi_battery_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_battery_sysctl_ctx, 205 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 206 OID_AUTO, "battery", CTLFLAG_RD, 0, ""); 207 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx, 208 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 209 OID_AUTO, "life", CTLTYPE_INT | CTLFLAG_RD, 210 &acpi_battery_battinfo.cap, 0, acpi_battery_sysctl, "I", ""); 211 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx, 212 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 213 OID_AUTO, "time", CTLTYPE_INT | CTLFLAG_RD, 214 &acpi_battery_battinfo.min, 0, acpi_battery_sysctl, "I", ""); 215 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx, 216 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 217 OID_AUTO, "state", CTLTYPE_INT | CTLFLAG_RD, 218 &acpi_battery_battinfo.state, 0, acpi_battery_sysctl, "I", ""); 219 SYSCTL_ADD_INT(&sc->acpi_battery_sysctl_ctx, 220 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 221 OID_AUTO, "units", CTLFLAG_RD, &acpi_batteries_units, 0, ""); 222 223 return (error); 224} 225 226int 227acpi_battery_register(int type, int phys_unit) 228{ 229 int error; 230 struct acpi_batteries *bp; 231 232 error = 0; 233 if ((bp = malloc(sizeof(*bp), M_ACPIBATT, M_NOWAIT)) == NULL) { 234 return(ENOMEM); 235 } 236 237 bp->battdesc.type = type; 238 bp->battdesc.phys_unit = phys_unit; 239 if (acpi_batteries_initted == 0) { 240 if ((error = acpi_battery_init()) != 0) { 241 free(bp, M_ACPIBATT); 242 return(error); 243 } 244 } 245 246 TAILQ_INSERT_TAIL(&acpi_batteries, bp, link); 247 acpi_batteries_units++; 248 249 return(0); 250} 251