1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/bus.h> 35 #include <sys/condvar.h> 36 #include <sys/eventhandler.h> 37 #include <sys/kernel.h> 38 #include <sys/module.h> 39 #include <sys/rman.h> 40 #include <sys/selinfo.h> 41 42 #include <dev/smbus/smbconf.h> 43 #include <dev/smbus/smbus.h> 44 #include <dev/smbus/smb.h> 45 46 #include "smbus_if.h" 47 48 #ifdef LOCAL_MODULE 49 #include <ipmivars.h> 50 #else 51 #include <dev/ipmi/ipmivars.h> 52 #endif 53 54 static void ipmi_smbus_identify(driver_t *driver, device_t parent); 55 static int ipmi_smbus_probe(device_t dev); 56 static int ipmi_smbus_attach(device_t dev); 57 58 static void 59 ipmi_smbus_identify(driver_t *driver, device_t parent) 60 { 61 struct ipmi_get_info info; 62 63 if (ipmi_smbios_identify(&info) && info.iface_type == SSIF_MODE && 64 device_find_child(parent, "ipmi", -1) == NULL) 65 BUS_ADD_CHILD(parent, 0, "ipmi", -1); 66 } 67 68 static int 69 ipmi_smbus_probe(device_t dev) 70 { 71 72 device_set_desc(dev, "IPMI System Interface"); 73 return (BUS_PROBE_DEFAULT); 74 } 75 76 static int 77 ipmi_smbus_attach(device_t dev) 78 { 79 struct ipmi_softc *sc = device_get_softc(dev); 80 struct ipmi_get_info info; 81 int error; 82 83 /* This should never fail. */ 84 if (!ipmi_smbios_identify(&info)) 85 return (ENXIO); 86 87 if (info.iface_type != SSIF_MODE) { 88 device_printf(dev, "No SSIF IPMI interface found\n"); 89 return (ENXIO); 90 } 91 92 sc->ipmi_dev = dev; 93 94 if (info.irq != 0) { 95 sc->ipmi_irq_rid = 0; 96 sc->ipmi_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, 97 &sc->ipmi_irq_rid, info.irq, info.irq, 1, 98 RF_SHAREABLE | RF_ACTIVE); 99 } 100 101 device_printf(dev, "SSIF mode found at address 0x%llx on %s\n", 102 (long long)info.address, device_get_name(device_get_parent(dev))); 103 error = ipmi_ssif_attach(sc, device_get_parent(dev), info.address); 104 if (error) 105 goto bad; 106 107 error = ipmi_attach(dev); 108 if (error) 109 goto bad; 110 111 return (0); 112 bad: 113 ipmi_release_resources(dev); 114 return (error); 115 } 116 117 static device_method_t ipmi_methods[] = { 118 /* Device interface */ 119 DEVMETHOD(device_identify, ipmi_smbus_identify), 120 DEVMETHOD(device_probe, ipmi_smbus_probe), 121 DEVMETHOD(device_attach, ipmi_smbus_attach), 122 DEVMETHOD(device_detach, ipmi_detach), 123 { 0, 0 } 124 }; 125 126 static driver_t ipmi_smbus_driver = { 127 "ipmi", 128 ipmi_methods, 129 sizeof(struct ipmi_softc) 130 }; 131 132 DRIVER_MODULE(ipmi_smbus, smbus, ipmi_smbus_driver, ipmi_devclass, 0, 0); 133 MODULE_DEPEND(ipmi_smbus, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER); 134