1d70424edSNicolas Souchu /*- 2c17d4340SNicolas Souchu * Copyright (c) 1998, 2001 Nicolas Souchu 3d70424edSNicolas Souchu * All rights reserved. 4d70424edSNicolas Souchu * 5d70424edSNicolas Souchu * Redistribution and use in source and binary forms, with or without 6d70424edSNicolas Souchu * modification, are permitted provided that the following conditions 7d70424edSNicolas Souchu * are met: 8d70424edSNicolas Souchu * 1. Redistributions of source code must retain the above copyright 9d70424edSNicolas Souchu * notice, this list of conditions and the following disclaimer. 10d70424edSNicolas Souchu * 2. Redistributions in binary form must reproduce the above copyright 11d70424edSNicolas Souchu * notice, this list of conditions and the following disclaimer in the 12d70424edSNicolas Souchu * documentation and/or other materials provided with the distribution. 13d70424edSNicolas Souchu * 14d70424edSNicolas Souchu * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15d70424edSNicolas Souchu * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16d70424edSNicolas Souchu * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17d70424edSNicolas Souchu * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18d70424edSNicolas Souchu * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19d70424edSNicolas Souchu * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20d70424edSNicolas Souchu * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21d70424edSNicolas Souchu * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22d70424edSNicolas Souchu * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23d70424edSNicolas Souchu * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24d70424edSNicolas Souchu * SUCH DAMAGE. 25d70424edSNicolas Souchu * 26d70424edSNicolas Souchu * 27d70424edSNicolas Souchu */ 28945ff31aSDavid E. O'Brien 29945ff31aSDavid E. O'Brien #include <sys/cdefs.h> 30945ff31aSDavid E. O'Brien __FBSDID("$FreeBSD$"); 31d70424edSNicolas Souchu #include <sys/param.h> 32d70424edSNicolas Souchu #include <sys/systm.h> 337048a99cSJohn Baldwin #include <sys/lock.h> 34d70424edSNicolas Souchu #include <sys/module.h> 357048a99cSJohn Baldwin #include <sys/mutex.h> 36d70424edSNicolas Souchu #include <sys/bus.h> 37d70424edSNicolas Souchu 38d70424edSNicolas Souchu #include <dev/smbus/smbconf.h> 39d70424edSNicolas Souchu #include <dev/smbus/smbus.h> 40d70424edSNicolas Souchu 41d70424edSNicolas Souchu /* 427048a99cSJohn Baldwin * Autoconfiguration and support routines for System Management bus 43d70424edSNicolas Souchu */ 44d70424edSNicolas Souchu 45d70424edSNicolas Souchu /* 46d70424edSNicolas Souchu * Device methods 47d70424edSNicolas Souchu */ 48d70424edSNicolas Souchu static int smbus_probe(device_t); 499a77af90SRuslan Ermilov static int smbus_attach(device_t); 507048a99cSJohn Baldwin static int smbus_detach(device_t); 51d70424edSNicolas Souchu 52d70424edSNicolas Souchu static device_method_t smbus_methods[] = { 53d70424edSNicolas Souchu /* device interface */ 54d70424edSNicolas Souchu DEVMETHOD(device_probe, smbus_probe), 559a77af90SRuslan Ermilov DEVMETHOD(device_attach, smbus_attach), 567048a99cSJohn Baldwin DEVMETHOD(device_detach, smbus_detach), 57d70424edSNicolas Souchu 58d70424edSNicolas Souchu /* bus interface */ 5915317dd8SMatthew N. Dodd DEVMETHOD(bus_print_child, bus_generic_print_child), 60d70424edSNicolas Souchu 61d70424edSNicolas Souchu { 0, 0 } 62d70424edSNicolas Souchu }; 63d70424edSNicolas Souchu 647048a99cSJohn Baldwin driver_t smbus_driver = { 65d70424edSNicolas Souchu "smbus", 66d70424edSNicolas Souchu smbus_methods, 67d70424edSNicolas Souchu sizeof(struct smbus_softc), 68d70424edSNicolas Souchu }; 69d70424edSNicolas Souchu 707048a99cSJohn Baldwin devclass_t smbus_devclass; 717048a99cSJohn Baldwin 72d70424edSNicolas Souchu /* 73d70424edSNicolas Souchu * At 'probe' time, we add all the devices which we know about to the 74d70424edSNicolas Souchu * bus. The generic attach routine will probe and attach them if they 75d70424edSNicolas Souchu * are alive. 76d70424edSNicolas Souchu */ 77d70424edSNicolas Souchu static int 78d70424edSNicolas Souchu smbus_probe(device_t dev) 79d70424edSNicolas Souchu { 807048a99cSJohn Baldwin 813ab1f056SNicolas Souchu device_set_desc(dev, "System Management Bus"); 82517e2485SNicolas Souchu 83d70424edSNicolas Souchu return (0); 84d70424edSNicolas Souchu } 85d70424edSNicolas Souchu 869a77af90SRuslan Ermilov static int 879a77af90SRuslan Ermilov smbus_attach(device_t dev) 889a77af90SRuslan Ermilov { 897048a99cSJohn Baldwin struct smbus_softc *sc = device_get_softc(dev); 907048a99cSJohn Baldwin 917048a99cSJohn Baldwin mtx_init(&sc->lock, device_get_nameunit(dev), "smbus", MTX_DEF); 927048a99cSJohn Baldwin bus_generic_probe(dev); 939a77af90SRuslan Ermilov bus_generic_attach(dev); 949a77af90SRuslan Ermilov 959a77af90SRuslan Ermilov return (0); 969a77af90SRuslan Ermilov } 979a77af90SRuslan Ermilov 987048a99cSJohn Baldwin static int 997048a99cSJohn Baldwin smbus_detach(device_t dev) 1007048a99cSJohn Baldwin { 1017048a99cSJohn Baldwin struct smbus_softc *sc = device_get_softc(dev); 1027048a99cSJohn Baldwin int error; 1037048a99cSJohn Baldwin 1047048a99cSJohn Baldwin error = bus_generic_detach(dev); 1057048a99cSJohn Baldwin if (error) 1067048a99cSJohn Baldwin return (error); 1077048a99cSJohn Baldwin mtx_destroy(&sc->lock); 1087048a99cSJohn Baldwin 1097048a99cSJohn Baldwin return (0); 1107048a99cSJohn Baldwin } 1117048a99cSJohn Baldwin 112d70424edSNicolas Souchu void 113d70424edSNicolas Souchu smbus_generic_intr(device_t dev, u_char devaddr, char low, char high) 114d70424edSNicolas Souchu { 115d70424edSNicolas Souchu } 116d70424edSNicolas Souchu 117c17d4340SNicolas Souchu MODULE_VERSION(smbus, SMBUS_MODVER); 118