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/kernel.h> 37 #include <sys/module.h> 38 #include <sys/rman.h> 39 #include <sys/selinfo.h> 40 41 #include <contrib/dev/acpica/include/acpi.h> 42 43 #include <dev/acpica/acpivar.h> 44 45 /* Hooks for the ACPI CA debugging infrastructure */ 46 #define _COMPONENT ACPI_BUTTON 47 ACPI_MODULE_NAME("IPMI") 48 49 #ifdef LOCAL_MODULE 50 #include <ipmi.h> 51 #include <ipmivars.h> 52 #else 53 #include <sys/ipmi.h> 54 #include <dev/ipmi/ipmivars.h> 55 #endif 56 57 static int ipmi_acpi_probe(device_t); 58 static int ipmi_acpi_attach(device_t); 59 60 int 61 ipmi_acpi_probe(device_t dev) 62 { 63 static char *ipmi_ids[] = {"IPI0001", NULL}; 64 int rv; 65 66 if (ipmi_attached) 67 return (EBUSY); 68 69 if (acpi_disabled("ipmi")) 70 return (ENXIO); 71 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ipmi_ids, NULL); 72 if (rv <= 0) 73 device_set_desc(dev, "IPMI System Interface"); 74 75 return (rv); 76 } 77 78 static int 79 ipmi_acpi_attach(device_t dev) 80 { 81 ACPI_HANDLE devh; 82 const char *mode; 83 struct ipmi_softc *sc = device_get_softc(dev); 84 int count, error, i, type; 85 int interface_type = 0, interface_version = 0; 86 87 error = 0; 88 devh = acpi_get_handle(dev); 89 if (ACPI_FAILURE(acpi_GetInteger(devh, "_IFT", &interface_type))) 90 return (ENXIO); 91 92 if (ACPI_FAILURE(acpi_GetInteger(devh, "_SRV", &interface_version))) 93 return (ENXIO); 94 95 switch (interface_type) { 96 case KCS_MODE: 97 count = 2; 98 mode = "KCS"; 99 break; 100 case SMIC_MODE: 101 count = 3; 102 mode = "SMIC"; 103 break; 104 case BT_MODE: 105 device_printf(dev, "BT interface not supported\n"); 106 return (ENXIO); 107 case SSIF_MODE: 108 device_printf(dev, "SSIF interface not supported on ACPI\n"); 109 return (0); 110 default: 111 return (ENXIO); 112 } 113 114 if (bus_get_resource(dev, SYS_RES_IOPORT, 0, NULL, NULL) == 0) 115 type = SYS_RES_IOPORT; 116 else if (bus_get_resource(dev, SYS_RES_MEMORY, 0, NULL, NULL) == 0) 117 type = SYS_RES_MEMORY; 118 else { 119 device_printf(dev, "unknown resource type\n"); 120 return (ENXIO); 121 } 122 123 sc->ipmi_io_rid = 0; 124 sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type, 125 &sc->ipmi_io_rid, RF_ACTIVE); 126 sc->ipmi_io_type = type; 127 sc->ipmi_io_spacing = 1; 128 if (sc->ipmi_io_res[0] == NULL) { 129 device_printf(dev, "couldn't configure I/O resource\n"); 130 return (ENXIO); 131 } 132 133 /* If we have multiple resources, allocate up to MAX_RES. */ 134 for (i = 1; i < MAX_RES; i++) { 135 sc->ipmi_io_rid = i; 136 sc->ipmi_io_res[i] = bus_alloc_resource_any(dev, type, 137 &sc->ipmi_io_rid, RF_ACTIVE); 138 if (sc->ipmi_io_res[i] == NULL) 139 break; 140 } 141 sc->ipmi_io_rid = 0; 142 143 /* If we have multiple resources, make sure we have enough of them. */ 144 if (sc->ipmi_io_res[1] != NULL && sc->ipmi_io_res[count - 1] == NULL) { 145 device_printf(dev, "too few I/O resources\n"); 146 error = ENXIO; 147 goto bad; 148 } 149 150 device_printf(dev, "%s mode found at %s 0x%jx on %s\n", 151 mode, type == SYS_RES_IOPORT ? "io" : "mem", 152 (uintmax_t)rman_get_start(sc->ipmi_io_res[0]), 153 device_get_name(device_get_parent(dev))); 154 155 sc->ipmi_dev = dev; 156 157 /* 158 * Setup an interrupt if we have an interrupt resource. We 159 * don't support GPE interrupts via _GPE yet. 160 */ 161 sc->ipmi_irq_rid = 0; 162 sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 163 &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE); 164 165 /* Warn if _GPE exists. */ 166 if (ACPI_SUCCESS(AcpiEvaluateObject(devh, "_GPE", NULL, NULL))) 167 device_printf(dev, "_GPE support not implemented\n"); 168 169 /* 170 * We assume an alignment of 1 byte as currently the IPMI spec 171 * doesn't provide any way to determine the alignment via ACPI. 172 */ 173 switch (interface_type) { 174 case KCS_MODE: 175 error = ipmi_kcs_attach(sc); 176 if (error) 177 goto bad; 178 break; 179 case SMIC_MODE: 180 error = ipmi_smic_attach(sc); 181 if (error) 182 goto bad; 183 break; 184 } 185 error = ipmi_attach(dev); 186 if (error) 187 goto bad; 188 189 return (0); 190 bad: 191 ipmi_release_resources(dev); 192 return (error); 193 } 194 195 static device_method_t ipmi_methods[] = { 196 /* Device interface */ 197 DEVMETHOD(device_probe, ipmi_acpi_probe), 198 DEVMETHOD(device_attach, ipmi_acpi_attach), 199 DEVMETHOD(device_detach, ipmi_detach), 200 { 0, 0 } 201 }; 202 203 static driver_t ipmi_acpi_driver = { 204 "ipmi", 205 ipmi_methods, 206 sizeof(struct ipmi_softc), 207 }; 208 209 DRIVER_MODULE(ipmi_acpi, acpi, ipmi_acpi_driver, 0, 0); 210 MODULE_DEPEND(ipmi_acpi, acpi, 1, 1, 1); 211