1 /* $OpenBSD: if_ep_isa.c,v 1.33 2023/09/11 08:41:26 mvs 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/timeout.h> 49 #include <sys/device.h> 50 #include <sys/queue.h> 51 52 #include <net/if.h> 53 #include <net/if_media.h> 54 55 #include <netinet/in.h> 56 #include <netinet/if_ether.h> 57 58 #if NBPFILTER > 0 59 #include <net/bpf.h> 60 #endif 61 62 #include <machine/cpu.h> 63 #include <machine/bus.h> 64 #include <machine/intr.h> 65 66 #include <dev/mii/mii.h> 67 #include <dev/mii/miivar.h> 68 69 #include <dev/ic/elink3var.h> 70 #include <dev/ic/elink3reg.h> 71 72 #include <dev/isa/isavar.h> 73 #include <dev/isa/elink.h> 74 75 int ep_isa_probe(struct device *, void *, void *); 76 void ep_isa_attach(struct device *, struct device *, void *); 77 78 const struct cfattach ep_isa_ca = { 79 sizeof(struct ep_softc), ep_isa_probe, ep_isa_attach 80 }; 81 82 static void epaddcard(int, int, int, u_short); 83 84 /* 85 * This keeps track of which ISAs have been through an ep probe sequence. 86 * A simple static variable isn't enough, since it's conceivable that 87 * a system might have more than one ISA bus. 88 * 89 * The "er_bus" member is the unit number of the parent ISA bus, e.g. "0" 90 * for "isa0". 91 */ 92 struct ep_isa_done_probe { 93 LIST_ENTRY(ep_isa_done_probe) er_link; 94 int er_bus; 95 }; 96 static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes; 97 static int ep_isa_probes_initialized; 98 99 #define MAXEPCARDS 20 /* if you have more than 20, you lose */ 100 101 static struct epcard { 102 int bus; 103 int iobase; 104 int irq; 105 char available; 106 u_short model; 107 } epcards[MAXEPCARDS]; 108 static int nepcards; 109 110 static void 111 epaddcard(int bus, int iobase, int irq, u_short model) 112 { 113 if (nepcards >= MAXEPCARDS) 114 return; 115 epcards[nepcards].bus = bus; 116 epcards[nepcards].iobase = iobase; 117 epcards[nepcards].irq = (irq == 2) ? 9 : irq; 118 epcards[nepcards].available = 1; 119 epcards[nepcards].model = model; 120 nepcards++; 121 } 122 123 /* 124 * 3c509 cards on the ISA bus are probed in ethernet address order. 125 * The probe sequence requires careful orchestration, and we'd like 126 * to allow the irq and base address to be wildcarded. So, we 127 * probe all the cards the first time epprobe() is called. On subsequent 128 * calls we look for matching cards. 129 */ 130 int 131 ep_isa_probe(struct device *parent, void *match, void *aux) 132 { 133 struct isa_attach_args *ia = aux; 134 bus_space_tag_t iot = ia->ia_iot; 135 bus_space_handle_t ioh; 136 int slot, iobase, irq, i, pnp; 137 u_int16_t vendor, model; 138 struct ep_isa_done_probe *er; 139 int bus = parent->dv_unit; 140 141 if (ep_isa_probes_initialized == 0) { 142 LIST_INIT(&ep_isa_all_probes); 143 ep_isa_probes_initialized = 1; 144 } 145 146 /* 147 * Probe this bus if we haven't done so already. 148 */ 149 LIST_FOREACH(er, &ep_isa_all_probes, er_link) 150 if (er->er_bus == parent->dv_unit) 151 goto bus_probed; 152 153 /* 154 * Mark this bus so we don't probe it again. 155 */ 156 er = (struct ep_isa_done_probe *) 157 malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT); 158 if (er == NULL) 159 panic("ep_isa_probe: can't allocate state storage"); 160 161 er->er_bus = bus; 162 LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link); 163 164 /* 165 * Map the Etherlink ID port for the probe sequence. 166 */ 167 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 168 printf("ep_isa_probe: can't map Etherlink ID port\n"); 169 return 0; 170 } 171 172 for (slot = 0; slot < MAXEPCARDS; slot++) { 173 elink_reset(iot, ioh, parent->dv_unit); 174 elink_idseq(iot, ioh, ELINK_509_POLY); 175 176 /* Untag all the adapters so they will talk to us. */ 177 if (slot == 0) 178 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0); 179 180 vendor = htons(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); 181 if (vendor != MFG_ID) 182 continue; 183 184 model = htons(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); 185 if ((model & 0xfff0) != PROD_ID_3C509) { 186 #ifndef trusted 187 printf("ep_isa_probe: ignoring model %04x\n", 188 model); 189 #endif 190 continue; 191 } 192 193 iobase = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); 194 iobase = (iobase & 0x1f) * 0x10 + 0x200; 195 196 irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); 197 irq >>= 12; 198 199 pnp = epreadeeprom(iot, ioh, EEPROM_PNP) & 8; 200 201 /* so card will not respond to contention again */ 202 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); 203 204 if ((model & 0xfff0) == PROD_ID_3C509 && pnp != 0) 205 continue; 206 207 /* 208 * XXX: this should probably not be done here 209 * because it enables the drq/irq lines from 210 * the board. Perhaps it should be done after 211 * we have checked for irq/drq collisions? 212 */ 213 bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); 214 epaddcard(bus, iobase, irq, model); 215 } 216 /* XXX should we sort by ethernet address? */ 217 218 bus_space_unmap(iot, ioh, 1); 219 220 bus_probed: 221 222 for (i = 0; i < nepcards; i++) { 223 if (epcards[i].bus != bus) 224 continue; 225 if (epcards[i].available == 0) 226 continue; 227 if (ia->ia_iobase != IOBASEUNK && 228 ia->ia_iobase != epcards[i].iobase) 229 continue; 230 if (ia->ia_irq != IRQUNK && 231 ia->ia_irq != epcards[i].irq) 232 continue; 233 goto good; 234 } 235 return 0; 236 237 good: 238 epcards[i].available = 0; 239 ia->ia_iobase = epcards[i].iobase; 240 ia->ia_irq = epcards[i].irq; 241 ia->ia_iosize = 0x10; 242 ia->ia_msize = 0; 243 ia->ia_aux = (void *)(long)(epcards[i].model); 244 return 1; 245 } 246 247 void 248 ep_isa_attach(struct device *parent, struct device *self, void *aux) 249 { 250 struct ep_softc *sc = (void *)self; 251 struct isa_attach_args *ia = aux; 252 bus_space_tag_t iot = ia->ia_iot; 253 bus_space_handle_t ioh; 254 int chipset; 255 256 /* Map i/o space. */ 257 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) 258 panic("ep_isa_attach: can't map i/o space"); 259 260 sc->sc_iot = iot; 261 sc->sc_ioh = ioh; 262 sc->bustype = EP_BUS_ISA; 263 264 printf(":"); 265 266 chipset = (int)(long)ia->ia_aux; 267 if ((chipset & 0xfff0) == PROD_ID_3C509) { 268 epconfig(sc, EP_CHIPSET_3C509, NULL); 269 } else { 270 /* 271 * XXX: Maybe a 3c515, but the check in ep_isa_probe looks 272 * at the moment only for a 3c509. 273 */ 274 epconfig(sc, EP_CHIPSET_UNKNOWN, NULL); 275 } 276 277 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 278 IPL_NET, epintr, sc, sc->sc_dev.dv_xname); 279 } 280