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("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/bus.h> 33 #include <sys/condvar.h> 34 #include <sys/eventhandler.h> 35 #include <sys/kernel.h> 36 #include <sys/module.h> 37 #include <sys/rman.h> 38 #include <sys/selinfo.h> 39 40 #include <machine/pci_cfgreg.h> 41 #include <dev/pci/pcireg.h> 42 43 #include <isa/isavar.h> 44 45 #ifdef LOCAL_MODULE 46 #include <ipmi.h> 47 #include <ipmivars.h> 48 #else 49 #include <sys/ipmi.h> 50 #include <dev/ipmi/ipmivars.h> 51 #endif 52 53 static void 54 ipmi_isa_identify(driver_t *driver, device_t parent) 55 { 56 struct ipmi_get_info info; 57 uint32_t devid; 58 59 if (ipmi_smbios_identify(&info) && info.iface_type != SSIF_MODE && 60 device_find_child(parent, "ipmi", -1) == NULL) { 61 /* 62 * XXX: Hack alert. On some broken systems, the IPMI 63 * interface is described via SMBIOS, but the actual 64 * IO resource is in a PCI device BAR, so we have to let 65 * the PCI device attach ipmi instead. In that case don't 66 * create an isa ipmi device. For now we hardcode the list 67 * of bus, device, function tuples. 68 */ 69 devid = pci_cfgregread(0, 4, 2, PCIR_DEVVENDOR, 4); 70 if (devid != 0xffffffff && 71 ipmi_pci_match(devid & 0xffff, devid >> 16) != NULL) 72 return; 73 BUS_ADD_CHILD(parent, 0, "ipmi", -1); 74 } 75 } 76 77 static int 78 ipmi_isa_probe(device_t dev) 79 { 80 81 /* 82 * Give other drivers precedence. Unfortunately, this doesn't 83 * work if we have an SMBIOS table that duplicates a PCI device 84 * that's later on the bus than the PCI-ISA bridge. 85 */ 86 if (ipmi_attached) 87 return (ENXIO); 88 89 /* Skip any PNP devices. */ 90 if (isa_get_logicalid(dev) != 0) 91 return (ENXIO); 92 93 device_set_desc(dev, "IPMI System Interface"); 94 return (BUS_PROBE_DEFAULT); 95 } 96 97 static int 98 ipmi_hint_identify(device_t dev, struct ipmi_get_info *info) 99 { 100 const char *mode, *name; 101 int i, unit, val; 102 103 /* We require at least a "mode" hint. */ 104 name = device_get_name(dev); 105 unit = device_get_unit(dev); 106 if (resource_string_value(name, unit, "mode", &mode) != 0) 107 return (0); 108 109 /* Set the mode and default I/O resources for each mode. */ 110 bzero(info, sizeof(struct ipmi_get_info)); 111 if (strcasecmp(mode, "KCS") == 0) { 112 info->iface_type = KCS_MODE; 113 info->address = 0xca2; 114 info->io_mode = 1; 115 info->offset = 1; 116 } else if (strcasecmp(mode, "SMIC") == 0) { 117 info->iface_type = SMIC_MODE; 118 info->address = 0xca9; 119 info->io_mode = 1; 120 info->offset = 1; 121 } else if (strcasecmp(mode, "BT") == 0) { 122 info->iface_type = BT_MODE; 123 info->address = 0xe4; 124 info->io_mode = 1; 125 info->offset = 1; 126 } else { 127 device_printf(dev, "Invalid mode %s\n", mode); 128 return (0); 129 } 130 131 /* 132 * Kill any resources that isahint.c might have setup for us 133 * since it will conflict with how we do resources. 134 */ 135 for (i = 0; i < 2; i++) { 136 bus_delete_resource(dev, SYS_RES_MEMORY, i); 137 bus_delete_resource(dev, SYS_RES_IOPORT, i); 138 } 139 140 /* Allow the I/O address to be overriden via hints. */ 141 if (resource_int_value(name, unit, "port", &val) == 0 && val != 0) { 142 info->address = val; 143 info->io_mode = 1; 144 } else if (resource_int_value(name, unit, "maddr", &val) == 0 && 145 val != 0) { 146 info->address = val; 147 info->io_mode = 0; 148 } 149 150 /* Allow the spacing to be overriden. */ 151 if (resource_int_value(name, unit, "spacing", &val) == 0) { 152 switch (val) { 153 case 8: 154 info->offset = 1; 155 break; 156 case 16: 157 info->offset = 2; 158 break; 159 case 32: 160 info->offset = 4; 161 break; 162 default: 163 device_printf(dev, "Invalid register spacing\n"); 164 return (0); 165 } 166 } 167 return (1); 168 } 169 170 static int 171 ipmi_isa_attach(device_t dev) 172 { 173 struct ipmi_softc *sc = device_get_softc(dev); 174 struct ipmi_get_info info; 175 const char *mode; 176 int count, error, i, type; 177 178 /* 179 * Pull info out of the SMBIOS table. If that doesn't work, use 180 * hints to enumerate a device. 181 */ 182 if (!ipmi_smbios_identify(&info) && 183 !ipmi_hint_identify(dev, &info)) 184 return (ENXIO); 185 186 switch (info.iface_type) { 187 case KCS_MODE: 188 count = 2; 189 mode = "KCS"; 190 break; 191 case SMIC_MODE: 192 count = 3; 193 mode = "SMIC"; 194 break; 195 case BT_MODE: 196 device_printf(dev, "BT mode is unsupported\n"); 197 return (ENXIO); 198 default: 199 return (ENXIO); 200 } 201 error = 0; 202 sc->ipmi_dev = dev; 203 204 device_printf(dev, "%s mode found at %s 0x%jx alignment 0x%x on %s\n", 205 mode, info.io_mode ? "io" : "mem", 206 (uintmax_t)info.address, info.offset, 207 device_get_name(device_get_parent(dev))); 208 if (info.io_mode) 209 type = SYS_RES_IOPORT; 210 else 211 type = SYS_RES_MEMORY; 212 213 sc->ipmi_io_type = type; 214 sc->ipmi_io_spacing = info.offset; 215 if (info.offset == 1) { 216 sc->ipmi_io_rid = 0; 217 sc->ipmi_io_res[0] = bus_alloc_resource(dev, type, 218 &sc->ipmi_io_rid, info.address, info.address + count - 1, 219 count, RF_ACTIVE); 220 if (sc->ipmi_io_res[0] == NULL) { 221 device_printf(dev, "couldn't configure I/O resource\n"); 222 return (ENXIO); 223 } 224 } else { 225 for (i = 0; i < count; i++) { 226 sc->ipmi_io_rid = i; 227 sc->ipmi_io_res[i] = bus_alloc_resource(dev, type, 228 &sc->ipmi_io_rid, info.address + i * info.offset, 229 info.address + i * info.offset, 1, RF_ACTIVE); 230 if (sc->ipmi_io_res[i] == NULL) { 231 device_printf(dev, 232 "couldn't configure I/O resource\n"); 233 error = ENXIO; 234 sc->ipmi_io_rid = 0; 235 goto bad; 236 } 237 } 238 sc->ipmi_io_rid = 0; 239 } 240 241 if (info.irq != 0) { 242 sc->ipmi_irq_rid = 0; 243 sc->ipmi_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, 244 &sc->ipmi_irq_rid, info.irq, info.irq, 1, 245 RF_SHAREABLE | RF_ACTIVE); 246 } 247 248 switch (info.iface_type) { 249 case KCS_MODE: 250 error = ipmi_kcs_attach(sc); 251 if (error) 252 goto bad; 253 break; 254 case SMIC_MODE: 255 error = ipmi_smic_attach(sc); 256 if (error) 257 goto bad; 258 break; 259 } 260 261 error = ipmi_attach(dev); 262 if (error) 263 goto bad; 264 265 return (0); 266 bad: 267 ipmi_release_resources(dev); 268 return (error); 269 } 270 271 static device_method_t ipmi_methods[] = { 272 /* Device interface */ 273 DEVMETHOD(device_identify, ipmi_isa_identify), 274 DEVMETHOD(device_probe, ipmi_isa_probe), 275 DEVMETHOD(device_attach, ipmi_isa_attach), 276 DEVMETHOD(device_detach, ipmi_detach), 277 { 0, 0 } 278 }; 279 280 static driver_t ipmi_isa_driver = { 281 "ipmi", 282 ipmi_methods, 283 sizeof(struct ipmi_softc), 284 }; 285 286 DRIVER_MODULE(ipmi_isa, isa, ipmi_isa_driver, ipmi_devclass, 0, 0); 287