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: src/sys/dev/acpica/acpi_battery.c,v 1.8.2.1 2003/08/22 20:49:20 jhb Exp $ 27 * $DragonFly: src/sys/dev/acpica/Attic/acpi_battery.c,v 1.1 2003/09/24 03:32:16 drhodus Exp $ 28 */ 29 30 #include "opt_acpi.h" /* XXX trim includes */ 31 #include <sys/param.h> 32 #include <sys/kernel.h> 33 #include <sys/proc.h> 34 #include <sys/malloc.h> 35 #include <sys/bus.h> 36 #include <sys/conf.h> 37 #include <sys/ioccom.h> 38 #include <sys/reboot.h> 39 #include <sys/sysctl.h> 40 #include <sys/ctype.h> 41 42 #include <machine/clock.h> 43 44 #include <machine/resource.h> 45 46 #include "acpi.h" 47 48 #include <dev/acpica/acpivar.h> 49 #include <dev/acpica/acpiio.h> 50 51 MALLOC_DEFINE(M_ACPIBATT, "acpibatt", "ACPI generic battery data"); 52 53 /* 54 * ACPI Battery Abstruction Layer. 55 */ 56 57 struct acpi_batteries { 58 TAILQ_ENTRY(acpi_batteries) link; 59 struct acpi_battdesc battdesc; 60 }; 61 62 static TAILQ_HEAD(,acpi_batteries) acpi_batteries; 63 static int acpi_batteries_initted = 0; 64 static int acpi_batteries_units = 0; 65 static int acpi_battery_info_expire = 5; 66 static struct acpi_battinfo acpi_battery_battinfo; 67 68 int 69 acpi_battery_get_units(void) 70 { 71 72 return (acpi_batteries_units); 73 } 74 75 int 76 acpi_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 98 int 99 acpi_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 } 122 out: 123 return (error); 124 } 125 126 int 127 acpi_battery_get_info_expire(void) 128 { 129 130 return (acpi_battery_info_expire); 131 } 132 133 static int 134 acpi_battery_ioctl(u_long cmd, caddr_t addr, void *arg) 135 { 136 int error; 137 int logical_unit; 138 union acpi_battery_ioctl_arg *ioctl_arg; 139 140 ioctl_arg = (union acpi_battery_ioctl_arg *)addr; 141 error = 0; 142 143 /* 144 * No security check required: information retrieval only. If 145 * new functions are added here, a check might be required. 146 */ 147 148 switch (cmd) { 149 case ACPIIO_BATT_GET_UNITS: 150 *(int *)addr = acpi_battery_get_units(); 151 break; 152 153 case ACPIIO_BATT_GET_BATTDESC: 154 logical_unit = ioctl_arg->unit; 155 error = acpi_battery_get_battdesc(logical_unit, &ioctl_arg->battdesc); 156 break; 157 158 case ACPIIO_BATT_GET_BATTINFO: 159 logical_unit = ioctl_arg->unit; 160 error = acpi_battery_get_battinfo(logical_unit, 161 &ioctl_arg->battinfo); 162 break; 163 164 default: 165 error = EINVAL; 166 break; 167 } 168 169 return (error); 170 } 171 172 static int 173 acpi_battery_sysctl(SYSCTL_HANDLER_ARGS) 174 { 175 int val; 176 int error; 177 178 acpi_battery_get_battinfo(-1, &acpi_battery_battinfo); 179 val = *(u_int *)oidp->oid_arg1; 180 error = sysctl_handle_int(oidp, &val, 0, req); 181 return (error); 182 } 183 184 static int 185 acpi_battery_init(void) 186 { 187 device_t dev; 188 struct acpi_softc *sc; 189 int error; 190 191 if ((dev = devclass_get_device(devclass_find("acpi"), 0)) == NULL) { 192 return (ENXIO); 193 } 194 if ((sc = device_get_softc(dev)) == NULL) { 195 return (ENXIO); 196 } 197 198 error = 0; 199 200 TAILQ_INIT(&acpi_batteries); 201 acpi_batteries_initted = 1; 202 203 if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_UNITS, 204 acpi_battery_ioctl, NULL)) != 0) { 205 return (error); 206 } 207 if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTDESC, 208 acpi_battery_ioctl, NULL)) != 0) { 209 return (error); 210 } 211 if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTINFO, 212 acpi_battery_ioctl, NULL)) != 0) { 213 return (error); 214 } 215 216 sysctl_ctx_init(&sc->acpi_battery_sysctl_ctx); 217 sc->acpi_battery_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_battery_sysctl_ctx, 218 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), 219 OID_AUTO, "battery", CTLFLAG_RD, 0, ""); 220 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx, 221 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 222 OID_AUTO, "life", CTLTYPE_INT | CTLFLAG_RD, 223 &acpi_battery_battinfo.cap, 0, acpi_battery_sysctl, "I", ""); 224 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx, 225 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 226 OID_AUTO, "time", CTLTYPE_INT | CTLFLAG_RD, 227 &acpi_battery_battinfo.min, 0, acpi_battery_sysctl, "I", ""); 228 SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx, 229 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 230 OID_AUTO, "state", CTLTYPE_INT | CTLFLAG_RD, 231 &acpi_battery_battinfo.state, 0, acpi_battery_sysctl, "I", ""); 232 SYSCTL_ADD_INT(&sc->acpi_battery_sysctl_ctx, 233 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 234 OID_AUTO, "units", CTLFLAG_RD, &acpi_batteries_units, 0, ""); 235 SYSCTL_ADD_INT(&sc->acpi_battery_sysctl_ctx, 236 SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree), 237 OID_AUTO, "info_expire", CTLFLAG_RD | CTLFLAG_RW, 238 &acpi_battery_info_expire, 0, ""); 239 240 return (error); 241 } 242 243 int 244 acpi_battery_register(int type, int phys_unit) 245 { 246 int error; 247 struct acpi_batteries *bp; 248 249 error = 0; 250 if ((bp = malloc(sizeof(*bp), M_ACPIBATT, M_NOWAIT)) == NULL) { 251 return(ENOMEM); 252 } 253 254 bp->battdesc.type = type; 255 bp->battdesc.phys_unit = phys_unit; 256 if (acpi_batteries_initted == 0) { 257 if ((error = acpi_battery_init()) != 0) { 258 free(bp, M_ACPIBATT); 259 return(error); 260 } 261 } 262 263 TAILQ_INSERT_TAIL(&acpi_batteries, bp, link); 264 acpi_batteries_units++; 265 266 return(0); 267 } 268