/* $NetBSD: if_ep_isa.c,v 1.45 2016/07/14 10:19:06 msaitoh Exp $ */ /*- * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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. */ /* * Copyright (c) 1997 Jonathan Stone * 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. */ #include __KERNEL_RCSID(0, "$NetBSD: if_ep_isa.c,v 1.45 2016/07/14 10:19:06 msaitoh Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include int ep_isa_probe(device_t , cfdata_t , void *); void ep_isa_attach(device_t , device_t , void *); CFATTACH_DECL_NEW(ep_isa, sizeof(struct ep_softc), ep_isa_probe, ep_isa_attach, NULL, NULL); static void epaddcard(int, int, int, int); /* * 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; long model; } epcards[MAXEPCARDS]; static int nepcards; static void epaddcard(int bus, int iobase, int irq, int model) { if (nepcards >= MAXEPCARDS) return; epcards[nepcards].bus = bus; epcards[nepcards].iobase = iobase; epcards[nepcards].irq = (irq == 2) ? 9 : irq; epcards[nepcards].model = model; epcards[nepcards].available = 1; nepcards++; } /* * 3c509 cards on the ISA bus are probed in ethernet address order. * The probe sequence requires careful orchestration, and we'd like * 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(device_t parent, cfdata_t match, void *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; u_int16_t vendor, model, eeprom_addr_cfg; struct ep_isa_done_probe *er; int bus = device_unit(parent); if (ISA_DIRECT_CONFIG(ia)) return (0); 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. */ for (er = ep_isa_all_probes.lh_first; er != NULL; er = er->er_link.le_next) if (er->er_bus == device_unit(parent)) 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, device_unit(parent)); 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 = bswap16(epreadeeprom(iot, ioh, EEPROM_MFG_ID)); if (vendor != MFG_ID) continue; model = bswap16(epreadeeprom(iot, ioh, EEPROM_PROD_ID)); /* * XXX: Add a new product id to check for other cards * (3c515?) and fix the check in ep_isa_attach. */ if ((model & 0xfff0) != PROD_ID_3C509) { #ifndef trusted printf( "ep_isa_probe: ignoring model %04x\n", model); #endif continue; } eeprom_addr_cfg = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG); iobase = (eeprom_addr_cfg & 0x1f) * 0x10 + 0x200; irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG); irq >>= 12; /* XXX Should ignore card if non-ISA(EISA) io address? -chb */ /* * Don't attach a 3c509 in PnP mode. * PnP mode was added with the 3C509B. * Check some EEPROM registers to make sure this is really * a 3C509B and test whether it is in PnP mode. */ if ((model & 0xfff0) == PROD_ID_3C509) { u_int16_t cksum, eepromrev, eeprom_cap, eeprom_hi; /* * Fetch all the info we need to ascertain whether * the card is PnP capable and in PnP mode. * Skip over PnP cards. */ /* secondary configurable data checksum */ cksum = epreadeeprom(iot, ioh, EEPROM_CHECKSUM_EL3) & 0xFF; for (i = EEPROM_CONFIG_HIGH; i < EEPROM_CHECKSUM_EL3; i++) { cksum ^= epreadeeprom(iot, ioh, i); } cksum = (cksum & 0xFF) ^ ((cksum >> 8) & 0xFF); eepromrev = epreadeeprom(iot, ioh, EEPROM_SSI); eeprom_hi = epreadeeprom(iot, ioh, EEPROM_CONFIG_HIGH); eeprom_cap = epreadeeprom(iot, ioh, EEPROM_CAP); /* * Stop card responding to contention in future. * (NB: stops rsponse to all reads from ID port.) */ bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1); if (cksum != 0) { #if 0 printf("ep_isa_probe: cksum mismatch 0x%02x\n", (int)cksum); #endif } else if ((eepromrev & 0xF) < 1) { /* 3C509B is adapter revision level 1. */ #if 0 printf("ep_isa_probe: revision level 0\n"); #endif } else if (eeprom_cap != 0x2083) { #if 0 printf("ep_isa_probe: capabilities word mismatch0x%03x\n", (int)epreadeeprom(iot, ioh, EEPROM_CAP)); #endif } else /* * we have a 3c509B with PnP capabilities. * Test partly documented bits which toggle when * in PnP mode. */ if ((eeprom_hi & 0x8) != 0 || ((eeprom_hi & 0xc) == 0 && (eeprom_addr_cfg & 0x80) != 0)) { printf("3COM 3C509B Ethernet card in PnP mode\n"); 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? * * According to the 3COM docs, this does not enable * the irq lines. -chb */ 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: if (ia->ia_nio < 1) return (0); if (ia->ia_nirq < 1) return (0); for (i = 0; i < nepcards; i++) { if (epcards[i].bus != bus) continue; if (epcards[i].available == 0) continue; if (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT && ia->ia_io[0].ir_addr != epcards[i].iobase) continue; if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && ia->ia_irq[0].ir_irq != epcards[i].irq) continue; goto good; } return 0; good: epcards[i].available = 0; ia->ia_nio = 1; ia->ia_io[0].ir_addr = epcards[i].iobase; ia->ia_io[0].ir_size = 0x10; ia->ia_nirq = 1; ia->ia_irq[0].ir_irq = epcards[i].irq; ia->ia_niomem = 0; ia->ia_ndrq = 0; ia->ia_aux = (void *)epcards[i].model; return 1; } void ep_isa_attach(device_t parent, device_t self, void *aux) { struct ep_softc *sc = device_private(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_io[0].ir_addr, 0x10, 0, &ioh)) { aprint_error(": can't map i/o space\n"); return; } sc->sc_dev = self; sc->sc_iot = iot; sc->sc_ioh = ioh; sc->bustype = ELINK_BUS_ISA; sc->enable = NULL; sc->disable = NULL; sc->enabled = 1; chipset = (int)(long)ia->ia_aux; if ((chipset & 0xfff0) == PROD_ID_3C509) { aprint_normal(": 3Com 3C509 Ethernet\n"); epconfig(sc, ELINK_CHIPSET_3C509, NULL); } else { /* * XXX: Maybe a 3c515, but the check in ep_isa_probe looks * at the moment only for a 3c509. */ aprint_error(": unknown 3Com Ethernet card: %04x\n", chipset); return; } sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, IST_EDGE, IPL_NET, epintr, sc); }