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 #include <sys/efi.h> 42 43 #include <dev/smbus/smbconf.h> 44 #include <dev/smbus/smbus.h> 45 #include <dev/smbus/smb.h> 46 47 #include "smbus_if.h" 48 49 #ifdef LOCAL_MODULE 50 #include <ipmivars.h> 51 #else 52 #include <dev/ipmi/ipmivars.h> 53 #endif 54 55 static void ipmi_smbus_identify(driver_t *driver, device_t parent); 56 static int ipmi_smbus_probe(device_t dev); 57 static int ipmi_smbus_attach(device_t dev); 58 59 static void 60 ipmi_smbus_identify(driver_t *driver, device_t parent) 61 { 62 struct ipmi_get_info info; 63 64 if (ipmi_smbios_identify(&info) && info.iface_type == SSIF_MODE && 65 device_find_child(parent, "ipmi", -1) == NULL) 66 BUS_ADD_CHILD(parent, 0, "ipmi", -1); 67 } 68 69 static int 70 ipmi_smbus_probe(device_t dev) 71 { 72 73 device_set_desc(dev, "IPMI System Interface"); 74 return (BUS_PROBE_DEFAULT); 75 } 76 77 static int 78 ipmi_smbus_attach(device_t dev) 79 { 80 struct ipmi_softc *sc = device_get_softc(dev); 81 struct ipmi_get_info info; 82 int error; 83 84 /* This should never fail. */ 85 if (!ipmi_smbios_identify(&info)) 86 return (ENXIO); 87 88 if (info.iface_type != SSIF_MODE) { 89 device_printf(dev, "No SSIF IPMI interface found\n"); 90 return (ENXIO); 91 } 92 93 sc->ipmi_dev = dev; 94 95 if (info.irq != 0) { 96 sc->ipmi_irq_rid = 0; 97 sc->ipmi_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, 98 &sc->ipmi_irq_rid, info.irq, info.irq, 1, 99 RF_SHAREABLE | RF_ACTIVE); 100 } 101 102 device_printf(dev, "SSIF mode found at address 0x%llx on %s\n", 103 (long long)info.address, device_get_name(device_get_parent(dev))); 104 error = ipmi_ssif_attach(sc, device_get_parent(dev), info.address); 105 if (error) 106 goto bad; 107 108 error = ipmi_attach(dev); 109 if (error) 110 goto bad; 111 112 return (0); 113 bad: 114 ipmi_release_resources(dev); 115 return (error); 116 } 117 118 static device_method_t ipmi_methods[] = { 119 /* Device interface */ 120 DEVMETHOD(device_identify, ipmi_smbus_identify), 121 DEVMETHOD(device_probe, ipmi_smbus_probe), 122 DEVMETHOD(device_attach, ipmi_smbus_attach), 123 DEVMETHOD(device_detach, ipmi_detach), 124 { 0, 0 } 125 }; 126 127 static driver_t ipmi_smbus_driver = { 128 "ipmi", 129 ipmi_methods, 130 sizeof(struct ipmi_softc) 131 }; 132 133 DRIVER_MODULE(ipmi_smbus, smbus, ipmi_smbus_driver, ipmi_devclass, 0, 0); 134 MODULE_DEPEND(ipmi_smbus, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER); 135 #ifdef ARCH_MAY_USE_EFI 136 MODULE_DEPEND(ipmi_smbus, efirt, 1, 1, 1); 137 #endif 138