ipmi_acpi.c revision 188078
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: head/sys/dev/ipmi/ipmi_acpi.c 188078 2009-02-03 16:39:51Z jhb $"); 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/acpi.h> 40#include <dev/acpica/acpivar.h> 41 42/* Hooks for the ACPI CA debugging infrastructure */ 43#define _COMPONENT ACPI_BUTTON 44ACPI_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 54static int ipmi_acpi_probe(device_t); 55static int ipmi_acpi_attach(device_t); 56 57int 58ipmi_acpi_probe(device_t dev) 59{ 60 static char *ipmi_ids[] = {"IPI0001", NULL}; 61 62 if (ipmi_attached) 63 return (EBUSY); 64 65 if (acpi_disabled("ipmi") || 66 ACPI_ID_PROBE(device_get_parent(dev), dev, ipmi_ids) == NULL) 67 return (ENXIO); 68 69 device_set_desc(dev, "IPMI System Interface"); 70 71 return (0); 72} 73 74static int 75ipmi_acpi_attach(device_t dev) 76{ 77 ACPI_HANDLE devh; 78 const char *mode; 79 struct ipmi_get_info info; 80 struct ipmi_softc *sc = device_get_softc(dev); 81 int count, error, flags, 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 = 2; 95 mode = "KCS"; 96 break; 97 case SMIC_MODE: 98 count = 3; 99 mode = "SMIC"; 100 break; 101 case BT_MODE: 102 device_printf(dev, "BT interface not supported\n"); 103 return (ENXIO); 104 case SSIF_MODE: 105 if (ACPI_FAILURE(acpi_GetInteger(devh, "_ADR", &flags))) 106 return (ENXIO); 107 info.address = flags; 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); 190bad: 191 ipmi_release_resources(dev); 192 return (error); 193} 194 195static 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 203static driver_t ipmi_acpi_driver = { 204 "ipmi", 205 ipmi_methods, 206 sizeof(struct ipmi_softc), 207}; 208 209DRIVER_MODULE(ipmi_acpi, acpi, ipmi_acpi_driver, ipmi_devclass, 0, 0); 210MODULE_DEPEND(ipmi_acpi, acpi, 1, 1, 1); 211