/* $OpenBSD: if_ep_isa.c,v 1.25 2008/02/18 16:24:13 krw Exp $ */ /* $NetBSD: if_ep_isa.c,v 1.5 1996/05/12 23:52:36 mycroft Exp $ */ /* * Copyright (c) 1996 Jason R. Thorpe * Copyright (c) 1994 Herb Peyerl * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Herb Peyerl. * 4. The name of Herb Peyerl may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Note: Most of the code here was written by Theo de Raadt originally, * ie. all the mechanics of probing for all cards on first call and then * searching for matching devices on subsequent calls. */ #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #include #include #include #endif #if NBPFILTER > 0 #include #endif #include #include #include #include #include #include #include #include #include int ep_isa_probe(struct device *, void *, void *); void ep_isa_attach(struct device *, struct device *, void *); struct cfattach ep_isa_ca = { sizeof(struct ep_softc), ep_isa_probe, ep_isa_attach }; static void epaddcard(int, int, int, u_short); /* * This keeps track of which ISAs have been through an ep probe sequence. * A simple static variable isn't enough, since it's conceivable that * a system might have more than one ISA bus. * * The "er_bus" member is the unit number of the parent ISA bus, e.g. "0" * for "isa0". */ struct ep_isa_done_probe { LIST_ENTRY(ep_isa_done_probe) er_link; int er_bus; }; static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes; static int ep_isa_probes_initialized; #define MAXEPCARDS 20 /* if you have more than 20, you lose */ static struct epcard { int bus; int iobase; int irq; char available; u_short model; } epcards[MAXEPCARDS]; static int nepcards; static void epaddcard(bus, iobase, irq, model) int bus, iobase, irq; u_short model; { if (nepcards >= MAXEPCARDS) return; epcards[nepcards].bus = bus; epcards[nepcards].iobase = iobase; epcards[nepcards].irq = (irq == 2) ? 9 : irq; epcards[nepcards].available = 1; epcards[nepcards].model = model; nepcards++; } /* * 3c509 cards on the ISA bus are probed in ethernet address order. * The probe sequence requires careful orchestration, and we'd like * to allow the irq and base address to be wildcarded. So, we * probe all the cards the first time epprobe() is called. On subsequent * calls we look for matching cards. */ int ep_isa_probe(parent, match, aux) struct device *parent; void *match, *aux; { struct isa_attach_args *ia = aux; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; int slot, iobase, irq, i, pnp; u_int16_t vendor, model; struct ep_isa_done_probe *er; int bus = parent->dv_unit; if (ep_isa_probes_initialized == 0) { LIST_INIT(&ep_isa_all_probes); ep_isa_probes_initialized = 1; } /* * Probe this bus if we haven't done so already. */ LIST_FOREACH(er, &ep_isa_all_probes, er_link) if (er->er_bus == parent->dv_unit) goto bus_probed; /* * Mark this bus so we don't probe it again. */ er = (struct ep_isa_done_probe *) malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT); if (er == NULL) panic("ep_isa_probe: can't allocate state storage"); er->er_bus = bus; LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link); /* * Map the Etherlink ID port for the probe sequence. */ if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { printf("ep_isa_probe: can't map Etherlink ID port\n"); return 0; } for (slot = 0; slot < MAXEPCARDS; slot++) { elink_reset(iot, ioh, parent->dv_unit); elink_idseq(iot, ioh, ELINK_509_POLY); /* Untag all the adapters so they will talk to us. */ if (slot == 0) bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0); vendor = htons(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); if (vendor != MFG_ID) continue; model = htons(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); if ((model & 0xfff0) != PROD_ID_3C509) { #ifndef trusted printf("ep_isa_probe: ignoring model %04x\n", model); #endif continue; } iobase = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); iobase = (iobase & 0x1f) * 0x10 + 0x200; irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); irq >>= 12; pnp = epreadeeprom(iot, ioh, EEPROM_PNP) & 8; /* so card will not respond to contention again */ bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); if ((model & 0xfff0) == PROD_ID_3C509 && pnp != 0) continue; /* * XXX: this should probably not be done here * because it enables the drq/irq lines from * the board. Perhaps it should be done after * we have checked for irq/drq collisions? */ bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG); epaddcard(bus, iobase, irq, model); } /* XXX should we sort by ethernet address? */ bus_space_unmap(iot, ioh, 1); bus_probed: for (i = 0; i < nepcards; i++) { if (epcards[i].bus != bus) continue; if (epcards[i].available == 0) continue; if (ia->ia_iobase != IOBASEUNK && ia->ia_iobase != epcards[i].iobase) continue; if (ia->ia_irq != IRQUNK && ia->ia_irq != epcards[i].irq) continue; goto good; } return 0; good: epcards[i].available = 0; ia->ia_iobase = epcards[i].iobase; ia->ia_irq = epcards[i].irq; ia->ia_iosize = 0x10; ia->ia_msize = 0; ia->ia_aux = (void *)(long)(epcards[i].model); return 1; } void ep_isa_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct ep_softc *sc = (void *)self; struct isa_attach_args *ia = aux; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; int chipset; /* Map i/o space. */ if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) panic("ep_isa_attach: can't map i/o space"); sc->sc_iot = iot; sc->sc_ioh = ioh; sc->bustype = EP_BUS_ISA; printf(":"); chipset = (int)(long)ia->ia_aux; if ((chipset & 0xfff0) == PROD_ID_3C509) { epconfig(sc, EP_CHIPSET_3C509, NULL); } else { /* * XXX: Maybe a 3c515, but the check in ep_isa_probe looks * at the moment only for a 3c509. */ epconfig(sc, EP_CHIPSET_UNKNOWN, NULL); } sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, IPL_NET, epintr, sc, sc->sc_dev.dv_xname); }