1 /* $OpenBSD: if_lc_isa.c,v 1.13 2021/03/07 06:17:03 jsg Exp $ */ 2 /* $NetBSD: if_lc_isa.c,v 1.10 2001/06/13 10:46:03 wiz Exp $ */ 3 4 /*- 5 * Copyright (c) 1994, 1995, 1997 Matt Thomas <matt@3am-software.com> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * DEC EtherWORKS 3 Ethernet Controllers 30 * 31 * Written by Matt Thomas 32 * 33 * This driver supports the LEMAC (DE203, DE204, and DE205) cards. 34 */ 35 36 #include "bpfilter.h" 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/mbuf.h> 41 #include <sys/socket.h> 42 #include <sys/ioctl.h> 43 #include <sys/errno.h> 44 #include <sys/syslog.h> 45 #include <sys/selinfo.h> 46 #include <sys/device.h> 47 #include <sys/queue.h> 48 49 #include <net/if.h> 50 #include <net/if_media.h> 51 52 #include <netinet/in.h> 53 #include <netinet/if_ether.h> 54 55 #if NBPFILTER > 0 56 #include <net/bpf.h> 57 #endif 58 59 #include <machine/cpu.h> 60 #include <machine/bus.h> 61 #include <machine/intr.h> 62 63 #include <dev/ic/lemacreg.h> 64 #include <dev/ic/lemacvar.h> 65 66 #include <dev/isa/isavar.h> 67 68 extern struct cfdriver lc_cd; 69 70 int lemac_isa_find(struct lemac_softc *, struct isa_attach_args *, 71 int); 72 int lemac_isa_probe(struct device *, void *, void *); 73 void lemac_isa_attach(struct device *, struct device *, void *); 74 75 struct cfattach lc_isa_ca = { 76 sizeof(struct lemac_softc), lemac_isa_probe, lemac_isa_attach 77 }; 78 79 int 80 lemac_isa_find(struct lemac_softc *sc, struct isa_attach_args *ia, int attach) 81 { 82 bus_addr_t maddr; 83 bus_size_t msize; 84 int rv = 0, irq; 85 86 /* 87 * Disallow wildcarded i/o addresses. 88 */ 89 if (ia->ia_iobase == IOBASEUNK) 90 return 0; 91 92 /* 93 * Make sure this is a valid LEMAC address. 94 */ 95 if (ia->ia_iobase & (LEMAC_IOSIZE - 1)) 96 return 0; 97 98 sc->sc_iot = ia->ia_iot; 99 100 /* 101 * Map the LEMAC's port space for the probe sequence. 102 */ 103 ia->ia_iosize = LEMAC_IOSIZE; 104 105 if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0, 106 &sc->sc_ioh)) { 107 if (attach) 108 printf(": can't map i/o space\n"); 109 return (0); 110 } 111 112 /* 113 * Read the Ethernet address from the EEPROM. 114 * It must start with one of the DEC OUIs and pass the 115 * DEC ethernet checksum test. 116 */ 117 if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0) 118 goto outio; 119 120 /* 121 * Get information about memory space and attempt to map it. 122 */ 123 lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msize, &irq); 124 125 if (ia->ia_maddr != maddr && ia->ia_maddr != MADDRUNK) 126 goto outio; 127 128 if (maddr != 0 && msize != 0) { 129 sc->sc_memt = ia->ia_memt; 130 if (bus_space_map(ia->ia_memt, maddr, msize, 0, 131 &sc->sc_memh)) { 132 if (attach) 133 printf(": can't map mem space\n"); 134 goto outio; 135 } 136 } 137 138 /* 139 * Double-check IRQ configuration. 140 */ 141 if (ia->ia_irq != irq && ia->ia_irq != IRQUNK) 142 printf("%s: overriding IRQ %d to %d\n", sc->sc_dv.dv_xname, 143 ia->ia_irq, irq); 144 145 if (attach) { 146 lemac_ifattach(sc); 147 148 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE, 149 IPL_NET, lemac_intr, sc, sc->sc_dv.dv_xname); 150 } 151 152 /* 153 * I guess we've found one. 154 */ 155 rv = 1; 156 157 ia->ia_maddr = maddr; 158 ia->ia_msize = msize; 159 ia->ia_irq = irq; 160 161 if (maddr != 0 && msize != 0 && (rv == 0 || !attach)) 162 bus_space_unmap(sc->sc_memt, sc->sc_memh, msize); 163 outio: 164 if (rv == 0 || !attach) 165 bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE); 166 return (rv); 167 } 168 169 int 170 lemac_isa_probe(struct device *parent, void *match, void *aux) 171 { 172 struct isa_attach_args *ia = aux; 173 struct cfdata *cf = ((struct device *)match)->dv_cfdata; 174 struct lemac_softc sc; 175 176 snprintf(sc.sc_dv.dv_xname, sizeof sc.sc_dv.dv_xname, "%s%d", 177 lc_cd.cd_name, cf->cf_unit); 178 179 return (lemac_isa_find(&sc, ia, 0)); 180 } 181 182 void 183 lemac_isa_attach(struct device *parent, struct device *self, void *aux) 184 { 185 struct lemac_softc *sc = (void *)self; 186 struct isa_attach_args *ia = aux; 187 188 lemac_isa_find(sc, ia, 1); 189 } 190