1 /* $OpenBSD: if_ep_isa.c,v 1.27 2013/11/15 16:46:27 brad 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/ip.h> 63 #include <netinet/if_ether.h> 64 #endif 65 66 #if NBPFILTER > 0 67 #include <net/bpf.h> 68 #endif 69 70 #include <machine/cpu.h> 71 #include <machine/bus.h> 72 #include <machine/intr.h> 73 74 #include <dev/mii/mii.h> 75 #include <dev/mii/miivar.h> 76 77 #include <dev/ic/elink3var.h> 78 #include <dev/ic/elink3reg.h> 79 80 #include <dev/isa/isavar.h> 81 #include <dev/isa/elink.h> 82 83 int ep_isa_probe(struct device *, void *, void *); 84 void ep_isa_attach(struct device *, struct device *, void *); 85 86 struct cfattach ep_isa_ca = { 87 sizeof(struct ep_softc), ep_isa_probe, ep_isa_attach 88 }; 89 90 static void epaddcard(int, int, int, u_short); 91 92 /* 93 * This keeps track of which ISAs have been through an ep probe sequence. 94 * A simple static variable isn't enough, since it's conceivable that 95 * a system might have more than one ISA bus. 96 * 97 * The "er_bus" member is the unit number of the parent ISA bus, e.g. "0" 98 * for "isa0". 99 */ 100 struct ep_isa_done_probe { 101 LIST_ENTRY(ep_isa_done_probe) er_link; 102 int er_bus; 103 }; 104 static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes; 105 static int ep_isa_probes_initialized; 106 107 #define MAXEPCARDS 20 /* if you have more than 20, you lose */ 108 109 static struct epcard { 110 int bus; 111 int iobase; 112 int irq; 113 char available; 114 u_short model; 115 } epcards[MAXEPCARDS]; 116 static int nepcards; 117 118 static void 119 epaddcard(int bus, int iobase, int irq, u_short model) 120 { 121 if (nepcards >= MAXEPCARDS) 122 return; 123 epcards[nepcards].bus = bus; 124 epcards[nepcards].iobase = iobase; 125 epcards[nepcards].irq = (irq == 2) ? 9 : irq; 126 epcards[nepcards].available = 1; 127 epcards[nepcards].model = model; 128 nepcards++; 129 } 130 131 /* 132 * 3c509 cards on the ISA bus are probed in ethernet address order. 133 * The probe sequence requires careful orchestration, and we'd like 134 * to allow the irq and base address to be wildcarded. So, we 135 * probe all the cards the first time epprobe() is called. On subsequent 136 * calls we look for matching cards. 137 */ 138 int 139 ep_isa_probe(struct device *parent, void *match, void *aux) 140 { 141 struct isa_attach_args *ia = aux; 142 bus_space_tag_t iot = ia->ia_iot; 143 bus_space_handle_t ioh; 144 int slot, iobase, irq, i, pnp; 145 u_int16_t vendor, model; 146 struct ep_isa_done_probe *er; 147 int bus = parent->dv_unit; 148 149 if (ep_isa_probes_initialized == 0) { 150 LIST_INIT(&ep_isa_all_probes); 151 ep_isa_probes_initialized = 1; 152 } 153 154 /* 155 * Probe this bus if we haven't done so already. 156 */ 157 LIST_FOREACH(er, &ep_isa_all_probes, er_link) 158 if (er->er_bus == parent->dv_unit) 159 goto bus_probed; 160 161 /* 162 * Mark this bus so we don't probe it again. 163 */ 164 er = (struct ep_isa_done_probe *) 165 malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT); 166 if (er == NULL) 167 panic("ep_isa_probe: can't allocate state storage"); 168 169 er->er_bus = bus; 170 LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link); 171 172 /* 173 * Map the Etherlink ID port for the probe sequence. 174 */ 175 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 176 printf("ep_isa_probe: can't map Etherlink ID port\n"); 177 return 0; 178 } 179 180 for (slot = 0; slot < MAXEPCARDS; slot++) { 181 elink_reset(iot, ioh, parent->dv_unit); 182 elink_idseq(iot, ioh, ELINK_509_POLY); 183 184 /* Untag all the adapters so they will talk to us. */ 185 if (slot == 0) 186 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0); 187 188 vendor = htons(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); 189 if (vendor != MFG_ID) 190 continue; 191 192 model = htons(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); 193 if ((model & 0xfff0) != PROD_ID_3C509) { 194 #ifndef trusted 195 printf("ep_isa_probe: ignoring model %04x\n", 196 model); 197 #endif 198 continue; 199 } 200 201 iobase = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); 202 iobase = (iobase & 0x1f) * 0x10 + 0x200; 203 204 irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); 205 irq >>= 12; 206 207 pnp = epreadeeprom(iot, ioh, EEPROM_PNP) & 8; 208 209 /* so card will not respond to contention again */ 210 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); 211 212 if ((model & 0xfff0) == PROD_ID_3C509 && pnp != 0) 213 continue; 214 215 /* 216 * XXX: this should probably not be done here 217 * because it enables the drq/irq lines from 218 * the board. Perhaps it should be done after 219 * we have checked for irq/drq collisions? 220 */ 221 bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); 222 epaddcard(bus, iobase, irq, model); 223 } 224 /* XXX should we sort by ethernet address? */ 225 226 bus_space_unmap(iot, ioh, 1); 227 228 bus_probed: 229 230 for (i = 0; i < nepcards; i++) { 231 if (epcards[i].bus != bus) 232 continue; 233 if (epcards[i].available == 0) 234 continue; 235 if (ia->ia_iobase != IOBASEUNK && 236 ia->ia_iobase != epcards[i].iobase) 237 continue; 238 if (ia->ia_irq != IRQUNK && 239 ia->ia_irq != epcards[i].irq) 240 continue; 241 goto good; 242 } 243 return 0; 244 245 good: 246 epcards[i].available = 0; 247 ia->ia_iobase = epcards[i].iobase; 248 ia->ia_irq = epcards[i].irq; 249 ia->ia_iosize = 0x10; 250 ia->ia_msize = 0; 251 ia->ia_aux = (void *)(long)(epcards[i].model); 252 return 1; 253 } 254 255 void 256 ep_isa_attach(struct device *parent, struct device *self, void *aux) 257 { 258 struct ep_softc *sc = (void *)self; 259 struct isa_attach_args *ia = aux; 260 bus_space_tag_t iot = ia->ia_iot; 261 bus_space_handle_t ioh; 262 int chipset; 263 264 /* Map i/o space. */ 265 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) 266 panic("ep_isa_attach: can't map i/o space"); 267 268 sc->sc_iot = iot; 269 sc->sc_ioh = ioh; 270 sc->bustype = EP_BUS_ISA; 271 272 printf(":"); 273 274 chipset = (int)(long)ia->ia_aux; 275 if ((chipset & 0xfff0) == PROD_ID_3C509) { 276 epconfig(sc, EP_CHIPSET_3C509, NULL); 277 } else { 278 /* 279 * XXX: Maybe a 3c515, but the check in ep_isa_probe looks 280 * at the moment only for a 3c509. 281 */ 282 epconfig(sc, EP_CHIPSET_UNKNOWN, NULL); 283 } 284 285 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 286 IPL_NET, epintr, sc, sc->sc_dev.dv_xname); 287 } 288