1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/bus.h> 33 #include <sys/condvar.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/rman.h> 37 #include <sys/selinfo.h> 38 39 #include <contrib/dev/acpica/include/acpi.h> 40 41 #include <dev/acpica/acpivar.h> 42 43 /* Hooks for the ACPI CA debugging infrastructure */ 44 #define _COMPONENT ACPI_BUTTON 45 ACPI_MODULE_NAME("IPMI") 46 47 #ifdef LOCAL_MODULE 48 #include <ipmi.h> 49 #include <ipmivars.h> 50 #else 51 #include <sys/ipmi.h> 52 #include <dev/ipmi/ipmivars.h> 53 #endif 54 55 static int ipmi_acpi_probe(device_t); 56 static int ipmi_acpi_attach(device_t); 57 58 int 59 ipmi_acpi_probe(device_t dev) 60 { 61 static char *ipmi_ids[] = {"IPI0001", NULL}; 62 int rv; 63 64 if (ipmi_attached) 65 return (EBUSY); 66 67 if (acpi_disabled("ipmi")) 68 return (ENXIO); 69 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ipmi_ids, NULL); 70 if (rv <= 0) 71 device_set_desc(dev, "IPMI System Interface"); 72 73 return (rv); 74 } 75 76 static int 77 ipmi_acpi_attach(device_t dev) 78 { 79 ACPI_HANDLE devh; 80 const char *mode; 81 struct ipmi_softc *sc = device_get_softc(dev); 82 int count, error, i, type; 83 int interface_type = 0, interface_version = 0; 84 85 error = 0; 86 devh = acpi_get_handle(dev); 87 if (ACPI_FAILURE(acpi_GetInteger(devh, "_IFT", &interface_type))) 88 return (ENXIO); 89 90 if (ACPI_FAILURE(acpi_GetInteger(devh, "_SRV", &interface_version))) 91 return (ENXIO); 92 93 switch (interface_type) { 94 case KCS_MODE: 95 count = IPMI_IF_KCS_NRES; 96 mode = "KCS"; 97 break; 98 case SMIC_MODE: 99 count = IPMI_IF_SMIC_NRES; 100 mode = "SMIC"; 101 break; 102 case BT_MODE: 103 count = IPMI_IF_BT_NRES; 104 mode = "BT"; 105 break; 106 case SSIF_MODE: 107 device_printf(dev, "SSIF interface not supported on ACPI\n"); 108 return (0); 109 default: 110 return (ENXIO); 111 } 112 113 if (bus_get_resource(dev, SYS_RES_IOPORT, 0, NULL, NULL) == 0) 114 type = SYS_RES_IOPORT; 115 else if (bus_get_resource(dev, SYS_RES_MEMORY, 0, NULL, NULL) == 0) 116 type = SYS_RES_MEMORY; 117 else { 118 device_printf(dev, "unknown resource type\n"); 119 return (ENXIO); 120 } 121 122 sc->ipmi_io_rid = 0; 123 sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type, 124 &sc->ipmi_io_rid, RF_ACTIVE); 125 sc->ipmi_io_type = type; 126 sc->ipmi_io_spacing = 1; 127 if (sc->ipmi_io_res[0] == NULL) { 128 device_printf(dev, "couldn't configure I/O resource\n"); 129 return (ENXIO); 130 } 131 132 /* If we have multiple resources, allocate up to MAX_RES. */ 133 for (i = 1; i < MAX_RES; i++) { 134 sc->ipmi_io_rid = i; 135 sc->ipmi_io_res[i] = bus_alloc_resource_any(dev, type, 136 &sc->ipmi_io_rid, RF_ACTIVE); 137 if (sc->ipmi_io_res[i] == NULL) 138 break; 139 } 140 sc->ipmi_io_rid = 0; 141 142 /* If we have multiple resources, make sure we have enough of them. */ 143 if (sc->ipmi_io_res[1] != NULL && sc->ipmi_io_res[count - 1] == NULL) { 144 device_printf(dev, "too few I/O resources\n"); 145 error = ENXIO; 146 goto bad; 147 } 148 149 device_printf(dev, "%s mode found at %s 0x%jx on %s\n", 150 mode, type == SYS_RES_IOPORT ? "io" : "mem", 151 (uintmax_t)rman_get_start(sc->ipmi_io_res[0]), 152 device_get_name(device_get_parent(dev))); 153 154 sc->ipmi_dev = dev; 155 156 /* 157 * Setup an interrupt if we have an interrupt resource. We 158 * don't support GPE interrupts via _GPE yet. 159 */ 160 sc->ipmi_irq_rid = 0; 161 sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 162 &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE); 163 164 /* Warn if _GPE exists. */ 165 if (ACPI_SUCCESS(AcpiEvaluateObject(devh, "_GPE", NULL, NULL))) 166 device_printf(dev, "_GPE support not implemented\n"); 167 168 /* 169 * We assume an alignment of 1 byte as currently the IPMI spec 170 * doesn't provide any way to determine the alignment via ACPI. 171 */ 172 error = ENXIO; 173 switch (interface_type) { 174 case KCS_MODE: 175 error = ipmi_kcs_attach(sc); 176 break; 177 case SMIC_MODE: 178 error = ipmi_smic_attach(sc); 179 break; 180 case BT_MODE: 181 error = ipmi_bt_attach(sc); 182 break; 183 } 184 if (error) 185 goto bad; 186 error = ipmi_attach(dev); 187 if (error) 188 goto bad; 189 190 return (0); 191 bad: 192 ipmi_release_resources(dev); 193 return (error); 194 } 195 196 static device_method_t ipmi_methods[] = { 197 /* Device interface */ 198 DEVMETHOD(device_probe, ipmi_acpi_probe), 199 DEVMETHOD(device_attach, ipmi_acpi_attach), 200 DEVMETHOD(device_detach, ipmi_detach), 201 { 0, 0 } 202 }; 203 204 static driver_t ipmi_acpi_driver = { 205 "ipmi", 206 ipmi_methods, 207 sizeof(struct ipmi_softc), 208 }; 209 210 DRIVER_MODULE(ipmi_acpi, acpi, ipmi_acpi_driver, 0, 0); 211 MODULE_DEPEND(ipmi_acpi, acpi, 1, 1, 1); 212