1 /*- 2 * Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com> 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/ipmi/ipmi_smbus.c 162562 2006-09-22 22:11:29Z jhb $ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/bus.h> 32 #include <sys/condvar.h> 33 #include <sys/eventhandler.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/rman.h> 37 #include <sys/conf.h> 38 39 #include <bus/smbus/smbconf.h> 40 #include <bus/smbus/smbus.h> 41 #include <dev/smbus/smb/smb.h> 42 43 #include "smbus_if.h" 44 45 #ifdef LOCAL_MODULE 46 #include <ipmivars.h> 47 #else 48 #include <dev/misc/ipmi/ipmivars.h> 49 #endif 50 51 static void ipmi_smbus_identify(driver_t *driver, device_t parent); 52 static int ipmi_smbus_probe(device_t dev); 53 static int ipmi_smbus_attach(device_t dev); 54 55 static void 56 ipmi_smbus_identify(driver_t *driver, device_t parent) 57 { 58 struct ipmi_get_info info; 59 60 if (ipmi_smbios_identify(&info) && info.iface_type == SSIF_MODE && 61 device_find_child(parent, "ipmi", -1) == NULL) 62 BUS_ADD_CHILD(parent, parent, 0, "ipmi", -1); 63 } 64 65 static int 66 ipmi_smbus_probe(device_t dev) 67 { 68 69 device_set_desc(dev, "IPMI System Interface"); 70 return (BUS_PROBE_DEFAULT); 71 } 72 73 static int 74 ipmi_smbus_attach(device_t dev) 75 { 76 struct ipmi_softc *sc = device_get_softc(dev); 77 struct ipmi_get_info info; 78 int error; 79 80 /* This should never fail. */ 81 if (!ipmi_smbios_identify(&info)) 82 return (ENXIO); 83 84 if (info.iface_type != SSIF_MODE) { 85 device_printf(dev, "No SSIF IPMI interface found\n"); 86 return (ENXIO); 87 } 88 89 sc->ipmi_dev = dev; 90 91 if (info.irq != 0) { 92 sc->ipmi_irq_rid = 0; 93 sc->ipmi_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, 94 &sc->ipmi_irq_rid, info.irq, info.irq, 1, 95 RF_SHAREABLE | RF_ACTIVE); 96 } 97 98 device_printf(dev, "SSIF mode found at address 0x%llx on %s\n", 99 (long long)info.address, device_get_name(device_get_parent(dev))); 100 error = ipmi_ssif_attach(sc, device_get_parent(dev), info.address); 101 if (error) 102 goto bad; 103 104 error = ipmi_attach(dev); 105 if (error) 106 goto bad; 107 108 return (0); 109 bad: 110 ipmi_release_resources(dev); 111 return (error); 112 } 113 114 static device_method_t ipmi_methods[] = { 115 /* Device interface */ 116 DEVMETHOD(device_identify, ipmi_smbus_identify), 117 DEVMETHOD(device_probe, ipmi_smbus_probe), 118 DEVMETHOD(device_attach, ipmi_smbus_attach), 119 DEVMETHOD(device_detach, ipmi_detach), 120 { 0, 0 } 121 }; 122 123 static driver_t ipmi_smbus_driver = { 124 "ipmi", 125 ipmi_methods, 126 sizeof(struct ipmi_softc) 127 }; 128 129 DRIVER_MODULE(ipmi_smbus, smbus, ipmi_smbus_driver, ipmi_devclass, NULL, NULL); 130 MODULE_DEPEND(ipmi_smbus, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER); 131