ipmi_acpi.c revision 331722
1/*- 2 * Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: stable/11/sys/dev/ipmi/ipmi_acpi.c 331722 2018-03-29 02:50:57Z eadler $"); 29 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 45ACPI_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 55static int ipmi_acpi_probe(device_t); 56static int ipmi_acpi_attach(device_t); 57 58int 59ipmi_acpi_probe(device_t dev) 60{ 61 static char *ipmi_ids[] = {"IPI0001", NULL}; 62 63 if (ipmi_attached) 64 return (EBUSY); 65 66 if (acpi_disabled("ipmi") || 67 ACPI_ID_PROBE(device_get_parent(dev), dev, ipmi_ids) == NULL) 68 return (ENXIO); 69 70 device_set_desc(dev, "IPMI System Interface"); 71 72 return (0); 73} 74 75static int 76ipmi_acpi_attach(device_t dev) 77{ 78 ACPI_HANDLE devh; 79 const char *mode; 80 struct ipmi_get_info info; 81 struct ipmi_softc *sc = device_get_softc(dev); 82 int count, error, flags, 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 = 2; 96 mode = "KCS"; 97 break; 98 case SMIC_MODE: 99 count = 3; 100 mode = "SMIC"; 101 break; 102 case BT_MODE: 103 device_printf(dev, "BT interface not supported\n"); 104 return (ENXIO); 105 case SSIF_MODE: 106 if (ACPI_FAILURE(acpi_GetInteger(devh, "_ADR", &flags))) 107 return (ENXIO); 108 info.address = flags; 109 device_printf(dev, "SSIF interface not supported on ACPI\n"); 110 return (0); 111 default: 112 return (ENXIO); 113 } 114 115 if (bus_get_resource(dev, SYS_RES_IOPORT, 0, NULL, NULL) == 0) 116 type = SYS_RES_IOPORT; 117 else if (bus_get_resource(dev, SYS_RES_MEMORY, 0, NULL, NULL) == 0) 118 type = SYS_RES_MEMORY; 119 else { 120 device_printf(dev, "unknown resource type\n"); 121 return (ENXIO); 122 } 123 124 sc->ipmi_io_rid = 0; 125 sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type, 126 &sc->ipmi_io_rid, RF_ACTIVE); 127 sc->ipmi_io_type = type; 128 sc->ipmi_io_spacing = 1; 129 if (sc->ipmi_io_res[0] == NULL) { 130 device_printf(dev, "couldn't configure I/O resource\n"); 131 return (ENXIO); 132 } 133 134 /* If we have multiple resources, allocate up to MAX_RES. */ 135 for (i = 1; i < MAX_RES; i++) { 136 sc->ipmi_io_rid = i; 137 sc->ipmi_io_res[i] = bus_alloc_resource_any(dev, type, 138 &sc->ipmi_io_rid, RF_ACTIVE); 139 if (sc->ipmi_io_res[i] == NULL) 140 break; 141 } 142 sc->ipmi_io_rid = 0; 143 144 /* If we have multiple resources, make sure we have enough of them. */ 145 if (sc->ipmi_io_res[1] != NULL && sc->ipmi_io_res[count - 1] == NULL) { 146 device_printf(dev, "too few I/O resources\n"); 147 error = ENXIO; 148 goto bad; 149 } 150 151 device_printf(dev, "%s mode found at %s 0x%jx on %s\n", 152 mode, type == SYS_RES_IOPORT ? "io" : "mem", 153 (uintmax_t)rman_get_start(sc->ipmi_io_res[0]), 154 device_get_name(device_get_parent(dev))); 155 156 sc->ipmi_dev = dev; 157 158 /* 159 * Setup an interrupt if we have an interrupt resource. We 160 * don't support GPE interrupts via _GPE yet. 161 */ 162 sc->ipmi_irq_rid = 0; 163 sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 164 &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE); 165 166 /* Warn if _GPE exists. */ 167 if (ACPI_SUCCESS(AcpiEvaluateObject(devh, "_GPE", NULL, NULL))) 168 device_printf(dev, "_GPE support not implemented\n"); 169 170 /* 171 * We assume an alignment of 1 byte as currently the IPMI spec 172 * doesn't provide any way to determine the alignment via ACPI. 173 */ 174 switch (interface_type) { 175 case KCS_MODE: 176 error = ipmi_kcs_attach(sc); 177 if (error) 178 goto bad; 179 break; 180 case SMIC_MODE: 181 error = ipmi_smic_attach(sc); 182 if (error) 183 goto bad; 184 break; 185 } 186 error = ipmi_attach(dev); 187 if (error) 188 goto bad; 189 190 return (0); 191bad: 192 ipmi_release_resources(dev); 193 return (error); 194} 195 196static 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 204static driver_t ipmi_acpi_driver = { 205 "ipmi", 206 ipmi_methods, 207 sizeof(struct ipmi_softc), 208}; 209 210DRIVER_MODULE(ipmi_acpi, acpi, ipmi_acpi_driver, ipmi_devclass, 0, 0); 211MODULE_DEPEND(ipmi_acpi, acpi, 1, 1, 1); 212