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/param.h> 30 #include <sys/systm.h> 31 #include <sys/bus.h> 32 #include <sys/condvar.h> 33 #include <sys/kernel.h> 34 #include <sys/module.h> 35 #include <sys/rman.h> 36 #include <sys/selinfo.h> 37 38 #include <contrib/dev/acpica/include/acpi.h> 39 40 #include <dev/acpica/acpivar.h> 41 42 /* Hooks for the ACPI CA debugging infrastructure */ 43 #define _COMPONENT ACPI_BUTTON 44 ACPI_MODULE_NAME("IPMI") 45 46 #ifdef LOCAL_MODULE 47 #include <ipmi.h> 48 #include <ipmivars.h> 49 #else 50 #include <sys/ipmi.h> 51 #include <dev/ipmi/ipmivars.h> 52 #endif 53 54 static int ipmi_acpi_probe(device_t); 55 static int ipmi_acpi_attach(device_t); 56 57 int 58 ipmi_acpi_probe(device_t dev) 59 { 60 static char *ipmi_ids[] = {"IPI0001", NULL}; 61 int rv; 62 63 if (ipmi_attached) 64 return (EBUSY); 65 66 if (acpi_disabled("ipmi")) 67 return (ENXIO); 68 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ipmi_ids, NULL); 69 if (rv <= 0) 70 device_set_desc(dev, "IPMI System Interface"); 71 72 return (rv); 73 } 74 75 static int 76 ipmi_acpi_attach(device_t dev) 77 { 78 ACPI_HANDLE devh; 79 const char *mode; 80 struct ipmi_softc *sc = device_get_softc(dev); 81 int count, error, i, type; 82 int interface_type = 0, interface_version = 0; 83 84 error = 0; 85 devh = acpi_get_handle(dev); 86 if (ACPI_FAILURE(acpi_GetInteger(devh, "_IFT", &interface_type))) 87 return (ENXIO); 88 89 if (ACPI_FAILURE(acpi_GetInteger(devh, "_SRV", &interface_version))) 90 return (ENXIO); 91 92 switch (interface_type) { 93 case KCS_MODE: 94 count = IPMI_IF_KCS_NRES; 95 mode = "KCS"; 96 break; 97 case SMIC_MODE: 98 count = IPMI_IF_SMIC_NRES; 99 mode = "SMIC"; 100 break; 101 case BT_MODE: 102 count = IPMI_IF_BT_NRES; 103 mode = "BT"; 104 break; 105 case SSIF_MODE: 106 device_printf(dev, "SSIF interface not supported on ACPI\n"); 107 return (0); 108 default: 109 return (ENXIO); 110 } 111 112 if (bus_get_resource(dev, SYS_RES_IOPORT, 0, NULL, NULL) == 0) 113 type = SYS_RES_IOPORT; 114 else if (bus_get_resource(dev, SYS_RES_MEMORY, 0, NULL, NULL) == 0) 115 type = SYS_RES_MEMORY; 116 else { 117 device_printf(dev, "unknown resource type\n"); 118 return (ENXIO); 119 } 120 121 sc->ipmi_io_rid = 0; 122 sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type, 123 &sc->ipmi_io_rid, RF_ACTIVE); 124 sc->ipmi_io_type = type; 125 sc->ipmi_io_spacing = 1; 126 if (sc->ipmi_io_res[0] == NULL) { 127 device_printf(dev, "couldn't configure I/O resource\n"); 128 return (ENXIO); 129 } 130 131 /* If we have multiple resources, allocate up to MAX_RES. */ 132 for (i = 1; i < MAX_RES; i++) { 133 sc->ipmi_io_rid = i; 134 sc->ipmi_io_res[i] = bus_alloc_resource_any(dev, type, 135 &sc->ipmi_io_rid, RF_ACTIVE); 136 if (sc->ipmi_io_res[i] == NULL) 137 break; 138 } 139 sc->ipmi_io_rid = 0; 140 141 /* If we have multiple resources, make sure we have enough of them. */ 142 if (sc->ipmi_io_res[1] != NULL && sc->ipmi_io_res[count - 1] == NULL) { 143 device_printf(dev, "too few I/O resources\n"); 144 error = ENXIO; 145 goto bad; 146 } 147 148 device_printf(dev, "%s mode found at %s 0x%jx on %s\n", 149 mode, type == SYS_RES_IOPORT ? "io" : "mem", 150 (uintmax_t)rman_get_start(sc->ipmi_io_res[0]), 151 device_get_name(device_get_parent(dev))); 152 153 sc->ipmi_dev = dev; 154 155 /* 156 * Setup an interrupt if we have an interrupt resource. We 157 * don't support GPE interrupts via _GPE yet. 158 */ 159 sc->ipmi_irq_rid = 0; 160 sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 161 &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE); 162 163 /* Warn if _GPE exists. */ 164 if (ACPI_SUCCESS(AcpiEvaluateObject(devh, "_GPE", NULL, NULL))) 165 device_printf(dev, "_GPE support not implemented\n"); 166 167 /* 168 * We assume an alignment of 1 byte as currently the IPMI spec 169 * doesn't provide any way to determine the alignment via ACPI. 170 */ 171 error = ENXIO; 172 switch (interface_type) { 173 case KCS_MODE: 174 error = ipmi_kcs_attach(sc); 175 break; 176 case SMIC_MODE: 177 error = ipmi_smic_attach(sc); 178 break; 179 case BT_MODE: 180 error = ipmi_bt_attach(sc); 181 break; 182 } 183 if (error) 184 goto bad; 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