1 /* $OpenBSD: if_ep_isa.c,v 1.25 2008/02/18 16:24:13 krw Exp $ */ 2 /* $NetBSD: if_ep_isa.c,v 1.5 1996/05/12 23:52:36 mycroft Exp $ */ 3 4 /* 5 * Copyright (c) 1996 Jason R. Thorpe <thorpej@beer.org> 6 * Copyright (c) 1994 Herb Peyerl <hpeyerl@beer.org> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Herb Peyerl. 20 * 4. The name of Herb Peyerl may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * Note: Most of the code here was written by Theo de Raadt originally, 35 * ie. all the mechanics of probing for all cards on first call and then 36 * searching for matching devices on subsequent calls. 37 */ 38 39 #include "bpfilter.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/mbuf.h> 44 #include <sys/socket.h> 45 #include <sys/ioctl.h> 46 #include <sys/errno.h> 47 #include <sys/syslog.h> 48 #include <sys/selinfo.h> 49 #include <sys/timeout.h> 50 #include <sys/device.h> 51 #include <sys/queue.h> 52 53 #include <net/if.h> 54 #include <net/if_dl.h> 55 #include <net/if_types.h> 56 #include <net/netisr.h> 57 #include <net/if_media.h> 58 59 #ifdef INET 60 #include <netinet/in.h> 61 #include <netinet/in_systm.h> 62 #include <netinet/in_var.h> 63 #include <netinet/ip.h> 64 #include <netinet/if_ether.h> 65 #endif 66 67 #if NBPFILTER > 0 68 #include <net/bpf.h> 69 #endif 70 71 #include <machine/cpu.h> 72 #include <machine/bus.h> 73 #include <machine/intr.h> 74 75 #include <dev/mii/mii.h> 76 #include <dev/mii/miivar.h> 77 78 #include <dev/ic/elink3var.h> 79 #include <dev/ic/elink3reg.h> 80 81 #include <dev/isa/isavar.h> 82 #include <dev/isa/elink.h> 83 84 int ep_isa_probe(struct device *, void *, void *); 85 void ep_isa_attach(struct device *, struct device *, void *); 86 87 struct cfattach ep_isa_ca = { 88 sizeof(struct ep_softc), ep_isa_probe, ep_isa_attach 89 }; 90 91 static void epaddcard(int, int, int, u_short); 92 93 /* 94 * This keeps track of which ISAs have been through an ep probe sequence. 95 * A simple static variable isn't enough, since it's conceivable that 96 * a system might have more than one ISA bus. 97 * 98 * The "er_bus" member is the unit number of the parent ISA bus, e.g. "0" 99 * for "isa0". 100 */ 101 struct ep_isa_done_probe { 102 LIST_ENTRY(ep_isa_done_probe) er_link; 103 int er_bus; 104 }; 105 static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes; 106 static int ep_isa_probes_initialized; 107 108 #define MAXEPCARDS 20 /* if you have more than 20, you lose */ 109 110 static struct epcard { 111 int bus; 112 int iobase; 113 int irq; 114 char available; 115 u_short model; 116 } epcards[MAXEPCARDS]; 117 static int nepcards; 118 119 static void 120 epaddcard(bus, iobase, irq, model) 121 int bus, iobase, irq; 122 u_short model; 123 { 124 125 if (nepcards >= MAXEPCARDS) 126 return; 127 epcards[nepcards].bus = bus; 128 epcards[nepcards].iobase = iobase; 129 epcards[nepcards].irq = (irq == 2) ? 9 : irq; 130 epcards[nepcards].available = 1; 131 epcards[nepcards].model = model; 132 nepcards++; 133 } 134 135 /* 136 * 3c509 cards on the ISA bus are probed in ethernet address order. 137 * The probe sequence requires careful orchestration, and we'd like 138 * to allow the irq and base address to be wildcarded. So, we 139 * probe all the cards the first time epprobe() is called. On subsequent 140 * calls we look for matching cards. 141 */ 142 int 143 ep_isa_probe(parent, match, aux) 144 struct device *parent; 145 void *match, *aux; 146 { 147 struct isa_attach_args *ia = aux; 148 bus_space_tag_t iot = ia->ia_iot; 149 bus_space_handle_t ioh; 150 int slot, iobase, irq, i, pnp; 151 u_int16_t vendor, model; 152 struct ep_isa_done_probe *er; 153 int bus = parent->dv_unit; 154 155 if (ep_isa_probes_initialized == 0) { 156 LIST_INIT(&ep_isa_all_probes); 157 ep_isa_probes_initialized = 1; 158 } 159 160 /* 161 * Probe this bus if we haven't done so already. 162 */ 163 LIST_FOREACH(er, &ep_isa_all_probes, er_link) 164 if (er->er_bus == parent->dv_unit) 165 goto bus_probed; 166 167 /* 168 * Mark this bus so we don't probe it again. 169 */ 170 er = (struct ep_isa_done_probe *) 171 malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT); 172 if (er == NULL) 173 panic("ep_isa_probe: can't allocate state storage"); 174 175 er->er_bus = bus; 176 LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link); 177 178 /* 179 * Map the Etherlink ID port for the probe sequence. 180 */ 181 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 182 printf("ep_isa_probe: can't map Etherlink ID port\n"); 183 return 0; 184 } 185 186 for (slot = 0; slot < MAXEPCARDS; slot++) { 187 elink_reset(iot, ioh, parent->dv_unit); 188 elink_idseq(iot, ioh, ELINK_509_POLY); 189 190 /* Untag all the adapters so they will talk to us. */ 191 if (slot == 0) 192 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0); 193 194 vendor = htons(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); 195 if (vendor != MFG_ID) 196 continue; 197 198 model = htons(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); 199 if ((model & 0xfff0) != PROD_ID_3C509) { 200 #ifndef trusted 201 printf("ep_isa_probe: ignoring model %04x\n", 202 model); 203 #endif 204 continue; 205 } 206 207 iobase = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); 208 iobase = (iobase & 0x1f) * 0x10 + 0x200; 209 210 irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); 211 irq >>= 12; 212 213 pnp = epreadeeprom(iot, ioh, EEPROM_PNP) & 8; 214 215 /* so card will not respond to contention again */ 216 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); 217 218 if ((model & 0xfff0) == PROD_ID_3C509 && pnp != 0) 219 continue; 220 221 /* 222 * XXX: this should probably not be done here 223 * because it enables the drq/irq lines from 224 * the board. Perhaps it should be done after 225 * we have checked for irq/drq collisions? 226 */ 227 bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); 228 epaddcard(bus, iobase, irq, model); 229 } 230 /* XXX should we sort by ethernet address? */ 231 232 bus_space_unmap(iot, ioh, 1); 233 234 bus_probed: 235 236 for (i = 0; i < nepcards; i++) { 237 if (epcards[i].bus != bus) 238 continue; 239 if (epcards[i].available == 0) 240 continue; 241 if (ia->ia_iobase != IOBASEUNK && 242 ia->ia_iobase != epcards[i].iobase) 243 continue; 244 if (ia->ia_irq != IRQUNK && 245 ia->ia_irq != epcards[i].irq) 246 continue; 247 goto good; 248 } 249 return 0; 250 251 good: 252 epcards[i].available = 0; 253 ia->ia_iobase = epcards[i].iobase; 254 ia->ia_irq = epcards[i].irq; 255 ia->ia_iosize = 0x10; 256 ia->ia_msize = 0; 257 ia->ia_aux = (void *)(long)(epcards[i].model); 258 return 1; 259 } 260 261 void 262 ep_isa_attach(parent, self, aux) 263 struct device *parent, *self; 264 void *aux; 265 { 266 struct ep_softc *sc = (void *)self; 267 struct isa_attach_args *ia = aux; 268 bus_space_tag_t iot = ia->ia_iot; 269 bus_space_handle_t ioh; 270 int chipset; 271 272 /* Map i/o space. */ 273 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) 274 panic("ep_isa_attach: can't map i/o space"); 275 276 sc->sc_iot = iot; 277 sc->sc_ioh = ioh; 278 sc->bustype = EP_BUS_ISA; 279 280 printf(":"); 281 282 chipset = (int)(long)ia->ia_aux; 283 if ((chipset & 0xfff0) == PROD_ID_3C509) { 284 epconfig(sc, EP_CHIPSET_3C509, NULL); 285 } else { 286 /* 287 * XXX: Maybe a 3c515, but the check in ep_isa_probe looks 288 * at the moment only for a 3c509. 289 */ 290 epconfig(sc, EP_CHIPSET_UNKNOWN, NULL); 291 } 292 293 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 294 IPL_NET, epintr, sc, sc->sc_dev.dv_xname); 295 } 296