1 /*- 2 * Copyright (c) 2000 Takanori Watanabe 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 "opt_acpi.h" 30 #include <sys/param.h> 31 #include <sys/kernel.h> 32 #include <sys/bus.h> 33 34 #include <machine/bus.h> 35 #include <machine/resource.h> 36 #include <sys/rman.h> 37 #include <sys/ioccom.h> 38 #include <sys/malloc.h> 39 #include <sys/conf.h> 40 41 #include "acpi.h" 42 #include <dev/acpica/acpivar.h> 43 #include <dev/acpica/acpiio.h> 44 45 /* 46 * Hooks for the ACPI CA debugging infrastructure 47 */ 48 #define _COMPONENT ACPI_AC_ADAPTER 49 MODULE_NAME("AC_ADAPTER") 50 51 #define ACPI_DEVICE_CHECK_PNP 0x00 52 #define ACPI_DEVICE_CHECK_EXISTENCE 0x01 53 #define ACPI_POWERSOURCE_STAT_CHANGE 0x80 54 55 static void acpi_acad_get_status(void * ); 56 static void acpi_acad_notify_handler(ACPI_HANDLE , UINT32 ,void *); 57 static int acpi_acad_probe(device_t); 58 static int acpi_acad_attach(device_t); 59 static int acpi_acad_ioctl(u_long, caddr_t, void *); 60 static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS); 61 62 struct acpi_acad_softc { 63 int status; 64 }; 65 66 static void 67 acpi_acad_get_status(void *context) 68 { 69 device_t dev = context; 70 struct acpi_acad_softc *sc = device_get_softc(dev); 71 ACPI_HANDLE h = acpi_get_handle(dev); 72 73 if (acpi_EvaluateInteger(h, "_PSR", &sc->status) != AE_OK) { 74 sc->status = -1; 75 return; 76 } 77 78 if (bootverbose) { 79 device_printf(dev,"%s\n",(sc->status) ? "On Line" : "Off Line"); 80 } 81 } 82 83 static void 84 acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 85 { 86 device_t dev = context; 87 88 if (bootverbose) { 89 device_printf(dev, "Notify %d\n", notify); 90 } 91 92 switch (notify) { 93 case ACPI_DEVICE_CHECK_PNP: 94 case ACPI_DEVICE_CHECK_EXISTENCE: 95 case ACPI_POWERSOURCE_STAT_CHANGE: 96 /*Temporally. It is better to notify policy manager*/ 97 AcpiOsQueueForExecution(OSD_PRIORITY_LO, 98 acpi_acad_get_status,context); 99 break; 100 default: 101 break; 102 } 103 } 104 105 static int 106 acpi_acad_probe(device_t dev) 107 { 108 109 if ((acpi_get_type(dev) == ACPI_TYPE_DEVICE) && 110 acpi_MatchHid(dev, "ACPI0003")) { 111 112 /* 113 * Set device description 114 */ 115 device_set_desc(dev, "AC adapter"); 116 return(0); 117 } 118 return(ENXIO); 119 } 120 121 static int 122 acpi_acad_attach(device_t dev) 123 { 124 int error; 125 struct acpi_acad_softc *sc; 126 struct acpi_softc *acpi_sc; 127 128 ACPI_HANDLE handle = acpi_get_handle(dev); 129 AcpiInstallNotifyHandler(handle, 130 ACPI_DEVICE_NOTIFY, 131 acpi_acad_notify_handler, dev); 132 /*Installing system notify is not so good*/ 133 AcpiInstallNotifyHandler(handle, 134 ACPI_SYSTEM_NOTIFY, 135 acpi_acad_notify_handler, dev); 136 137 if ((sc = device_get_softc(dev)) == NULL) { 138 return (ENXIO); 139 } 140 if ((error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, 141 acpi_acad_ioctl, dev)) != 0) { 142 return (error); 143 } 144 145 if (device_get_unit(dev) == 0) { 146 acpi_sc = acpi_device_get_parent_softc(dev); 147 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx, 148 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 149 OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD, 150 &sc->status, 0, acpi_acad_sysctl, "I", ""); 151 } 152 153 return(0); 154 } 155 156 static device_method_t acpi_acad_methods[] = { 157 /* Device interface */ 158 DEVMETHOD(device_probe, acpi_acad_probe), 159 DEVMETHOD(device_attach, acpi_acad_attach), 160 161 {0, 0} 162 }; 163 164 static driver_t acpi_acad_driver = { 165 "acpi_acad", 166 acpi_acad_methods, 167 sizeof(struct acpi_acad_softc), 168 }; 169 170 static devclass_t acpi_acad_devclass; 171 DRIVER_MODULE(acpi_acad,acpi,acpi_acad_driver,acpi_acad_devclass,0,0); 172 173 static int 174 acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg) 175 { 176 device_t dev; 177 struct acpi_acad_softc *sc; 178 179 dev = (device_t)arg; 180 if ((sc = device_get_softc(dev)) == NULL) { 181 return(ENXIO); 182 } 183 184 switch (cmd) { 185 case ACPIIO_ACAD_GET_STATUS: 186 acpi_acad_get_status(dev); 187 *(int *)addr = sc->status; 188 break; 189 } 190 191 return(0); 192 } 193 194 static int 195 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS) 196 { 197 int val; 198 int error; 199 device_t dev; 200 struct acpi_acad_softc *sc; 201 202 if ((dev = devclass_get_device(acpi_acad_devclass, 0)) == NULL) { 203 return (ENXIO); 204 } 205 if ((sc = device_get_softc(dev)) == NULL) { 206 return (ENXIO); 207 } 208 acpi_acad_get_status(dev); 209 val = *(u_int *)oidp->oid_arg1; 210 error = sysctl_handle_int(oidp, &val, 0, req); 211 return (error); 212 } 213 214