1 /* $NetBSD: if_lc_isa.c,v 1.11 2001/07/08 17:55:50 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1994, 1995, 1997 Matt Thomas <matt@3am-software.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 /* 28 * DEC EtherWORKS 3 Ethernet Controllers 29 * 30 * Written by Matt Thomas 31 * 32 * This driver supports the LEMAC (DE203, DE204, and DE205) cards. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/mbuf.h> 38 #include <sys/socket.h> 39 #include <sys/ioctl.h> 40 #include <sys/errno.h> 41 #include <sys/syslog.h> 42 #include <sys/select.h> 43 #include <sys/device.h> 44 #include <sys/queue.h> 45 46 #include <net/if.h> 47 #include <net/if_dl.h> 48 #include <net/if_ether.h> 49 #include <net/if_media.h> 50 51 #include <machine/cpu.h> 52 #include <machine/bus.h> 53 #include <machine/intr.h> 54 55 #include <dev/ic/lemacreg.h> 56 #include <dev/ic/lemacvar.h> 57 58 #include <dev/isa/isavar.h> 59 60 extern struct cfdriver lc_cd; 61 62 static int lemac_isa_find __P((lemac_softc_t *, struct isa_attach_args *, 63 int)); 64 static int lemac_isa_probe __P((struct device *, struct cfdata *, void *)); 65 static void lemac_isa_attach __P((struct device *, struct device *, void *)); 66 67 struct cfattach lc_isa_ca = { 68 sizeof(lemac_softc_t), lemac_isa_probe, lemac_isa_attach 69 }; 70 71 static int 72 lemac_isa_find(sc, ia, attach) 73 lemac_softc_t *sc; 74 struct isa_attach_args *ia; 75 int attach; 76 { 77 bus_addr_t maddr; 78 bus_addr_t msize; 79 int rv = 0, irq; 80 81 /* 82 * Disallow wildcarded i/o addresses. 83 */ 84 if (ia->ia_iobase == IOBASEUNK) 85 return 0; 86 87 /* 88 * Make sure this is a valid LEMAC address. 89 */ 90 if (ia->ia_iobase & (LEMAC_IOSIZE - 1)) 91 return 0; 92 93 sc->sc_iot = ia->ia_iot; 94 95 /* 96 * Map the LEMAC's port space for the probe sequence. 97 */ 98 ia->ia_iosize = LEMAC_IOSIZE; 99 100 if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0, 101 &sc->sc_ioh)) { 102 if (attach) 103 printf(": can't map i/o space\n"); 104 return 0; 105 } 106 107 /* 108 * Read the Ethernet address from the EEPROM. 109 * It must start with one of the DEC OUIs and pass the 110 * DEC ethernet checksum test. 111 */ 112 if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0) 113 goto outio; 114 115 /* 116 * Get information about memory space and attempt to map it. 117 */ 118 lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msize, &irq); 119 120 if (ia->ia_maddr != maddr && ia->ia_maddr != MADDRUNK) 121 goto outio; 122 123 sc->sc_memt = ia->ia_memt; 124 if (bus_space_map(ia->ia_memt, maddr, msize, 0, &sc->sc_memh)) { 125 if (attach) 126 printf(": can't map mem space\n"); 127 goto outio; 128 } 129 130 131 /* 132 * Double-check IRQ configuration. 133 */ 134 if (ia->ia_irq != irq && ia->ia_irq != IRQUNK) 135 printf("%s: overriding IRQ %d to %d\n", sc->sc_dv.dv_xname, 136 ia->ia_irq, irq); 137 138 if (attach) { 139 sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc); 140 if (sc->sc_ats == NULL) 141 printf("\n%s: warning: can't establish shutdown hook\n", 142 sc->sc_dv.dv_xname); 143 144 lemac_ifattach(sc); 145 146 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE, 147 IPL_NET, lemac_intr, sc); 148 } 149 150 /* 151 * I guess we've found one. 152 */ 153 rv = 1; 154 155 ia->ia_maddr = maddr; 156 ia->ia_msize = msize; 157 ia->ia_irq = irq; 158 159 if (rv == 0 || !attach) 160 bus_space_unmap(sc->sc_memt, sc->sc_memh, msize); 161 outio: 162 if (rv == 0 || !attach) 163 bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE); 164 return rv; 165 } 166 167 static int 168 lemac_isa_probe(parent, match, aux) 169 struct device *parent; 170 struct cfdata *match; 171 void *aux; 172 { 173 struct isa_attach_args *ia = aux; 174 struct cfdata *cf = match; 175 lemac_softc_t sc; 176 (void)sprintf(sc.sc_dv.dv_xname, "%s%d", lc_cd.cd_name, cf->cf_unit); 177 178 return lemac_isa_find(&sc, ia, 0); 179 } 180 181 static void 182 lemac_isa_attach(parent, self, aux) 183 struct device *parent; 184 struct device *self; 185 void *aux; 186 { 187 lemac_softc_t *sc = (void *)self; 188 struct isa_attach_args *ia = aux; 189 190 (void) lemac_isa_find(sc, ia, 1); 191 } 192