1 /* $OpenBSD: if_ep_isa.c,v 1.31 2015/11/25 11:20:38 mpi 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_media.h> 55 56 #include <netinet/in.h> 57 #include <netinet/if_ether.h> 58 59 #if NBPFILTER > 0 60 #include <net/bpf.h> 61 #endif 62 63 #include <machine/cpu.h> 64 #include <machine/bus.h> 65 #include <machine/intr.h> 66 67 #include <dev/mii/mii.h> 68 #include <dev/mii/miivar.h> 69 70 #include <dev/ic/elink3var.h> 71 #include <dev/ic/elink3reg.h> 72 73 #include <dev/isa/isavar.h> 74 #include <dev/isa/elink.h> 75 76 int ep_isa_probe(struct device *, void *, void *); 77 void ep_isa_attach(struct device *, struct device *, void *); 78 79 struct cfattach ep_isa_ca = { 80 sizeof(struct ep_softc), ep_isa_probe, ep_isa_attach 81 }; 82 83 static void epaddcard(int, int, int, u_short); 84 85 /* 86 * This keeps track of which ISAs have been through an ep probe sequence. 87 * A simple static variable isn't enough, since it's conceivable that 88 * a system might have more than one ISA bus. 89 * 90 * The "er_bus" member is the unit number of the parent ISA bus, e.g. "0" 91 * for "isa0". 92 */ 93 struct ep_isa_done_probe { 94 LIST_ENTRY(ep_isa_done_probe) er_link; 95 int er_bus; 96 }; 97 static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes; 98 static int ep_isa_probes_initialized; 99 100 #define MAXEPCARDS 20 /* if you have more than 20, you lose */ 101 102 static struct epcard { 103 int bus; 104 int iobase; 105 int irq; 106 char available; 107 u_short model; 108 } epcards[MAXEPCARDS]; 109 static int nepcards; 110 111 static void 112 epaddcard(int bus, int iobase, int irq, u_short model) 113 { 114 if (nepcards >= MAXEPCARDS) 115 return; 116 epcards[nepcards].bus = bus; 117 epcards[nepcards].iobase = iobase; 118 epcards[nepcards].irq = (irq == 2) ? 9 : irq; 119 epcards[nepcards].available = 1; 120 epcards[nepcards].model = model; 121 nepcards++; 122 } 123 124 /* 125 * 3c509 cards on the ISA bus are probed in ethernet address order. 126 * The probe sequence requires careful orchestration, and we'd like 127 * to allow the irq and base address to be wildcarded. So, we 128 * probe all the cards the first time epprobe() is called. On subsequent 129 * calls we look for matching cards. 130 */ 131 int 132 ep_isa_probe(struct device *parent, void *match, void *aux) 133 { 134 struct isa_attach_args *ia = aux; 135 bus_space_tag_t iot = ia->ia_iot; 136 bus_space_handle_t ioh; 137 int slot, iobase, irq, i, pnp; 138 u_int16_t vendor, model; 139 struct ep_isa_done_probe *er; 140 int bus = parent->dv_unit; 141 142 if (ep_isa_probes_initialized == 0) { 143 LIST_INIT(&ep_isa_all_probes); 144 ep_isa_probes_initialized = 1; 145 } 146 147 /* 148 * Probe this bus if we haven't done so already. 149 */ 150 LIST_FOREACH(er, &ep_isa_all_probes, er_link) 151 if (er->er_bus == parent->dv_unit) 152 goto bus_probed; 153 154 /* 155 * Mark this bus so we don't probe it again. 156 */ 157 er = (struct ep_isa_done_probe *) 158 malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT); 159 if (er == NULL) 160 panic("ep_isa_probe: can't allocate state storage"); 161 162 er->er_bus = bus; 163 LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link); 164 165 /* 166 * Map the Etherlink ID port for the probe sequence. 167 */ 168 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 169 printf("ep_isa_probe: can't map Etherlink ID port\n"); 170 return 0; 171 } 172 173 for (slot = 0; slot < MAXEPCARDS; slot++) { 174 elink_reset(iot, ioh, parent->dv_unit); 175 elink_idseq(iot, ioh, ELINK_509_POLY); 176 177 /* Untag all the adapters so they will talk to us. */ 178 if (slot == 0) 179 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0); 180 181 vendor = htons(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); 182 if (vendor != MFG_ID) 183 continue; 184 185 model = htons(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); 186 if ((model & 0xfff0) != PROD_ID_3C509) { 187 #ifndef trusted 188 printf("ep_isa_probe: ignoring model %04x\n", 189 model); 190 #endif 191 continue; 192 } 193 194 iobase = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); 195 iobase = (iobase & 0x1f) * 0x10 + 0x200; 196 197 irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); 198 irq >>= 12; 199 200 pnp = epreadeeprom(iot, ioh, EEPROM_PNP) & 8; 201 202 /* so card will not respond to contention again */ 203 bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); 204 205 if ((model & 0xfff0) == PROD_ID_3C509 && pnp != 0) 206 continue; 207 208 /* 209 * XXX: this should probably not be done here 210 * because it enables the drq/irq lines from 211 * the board. Perhaps it should be done after 212 * we have checked for irq/drq collisions? 213 */ 214 bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); 215 epaddcard(bus, iobase, irq, model); 216 } 217 /* XXX should we sort by ethernet address? */ 218 219 bus_space_unmap(iot, ioh, 1); 220 221 bus_probed: 222 223 for (i = 0; i < nepcards; i++) { 224 if (epcards[i].bus != bus) 225 continue; 226 if (epcards[i].available == 0) 227 continue; 228 if (ia->ia_iobase != IOBASEUNK && 229 ia->ia_iobase != epcards[i].iobase) 230 continue; 231 if (ia->ia_irq != IRQUNK && 232 ia->ia_irq != epcards[i].irq) 233 continue; 234 goto good; 235 } 236 return 0; 237 238 good: 239 epcards[i].available = 0; 240 ia->ia_iobase = epcards[i].iobase; 241 ia->ia_irq = epcards[i].irq; 242 ia->ia_iosize = 0x10; 243 ia->ia_msize = 0; 244 ia->ia_aux = (void *)(long)(epcards[i].model); 245 return 1; 246 } 247 248 void 249 ep_isa_attach(struct device *parent, struct device *self, void *aux) 250 { 251 struct ep_softc *sc = (void *)self; 252 struct isa_attach_args *ia = aux; 253 bus_space_tag_t iot = ia->ia_iot; 254 bus_space_handle_t ioh; 255 int chipset; 256 257 /* Map i/o space. */ 258 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) 259 panic("ep_isa_attach: can't map i/o space"); 260 261 sc->sc_iot = iot; 262 sc->sc_ioh = ioh; 263 sc->bustype = EP_BUS_ISA; 264 265 printf(":"); 266 267 chipset = (int)(long)ia->ia_aux; 268 if ((chipset & 0xfff0) == PROD_ID_3C509) { 269 epconfig(sc, EP_CHIPSET_3C509, NULL); 270 } else { 271 /* 272 * XXX: Maybe a 3c515, but the check in ep_isa_probe looks 273 * at the moment only for a 3c509. 274 */ 275 epconfig(sc, EP_CHIPSET_UNKNOWN, NULL); 276 } 277 278 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 279 IPL_NET, epintr, sc, sc->sc_dev.dv_xname); 280 } 281