1 /* $NetBSD: if_lc_isa.c,v 1.13 2002/01/07 21:47:08 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/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: if_lc_isa.c,v 1.13 2002/01/07 21:47:08 thorpej Exp $"); 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/select.h> 46 #include <sys/device.h> 47 #include <sys/queue.h> 48 49 #include <net/if.h> 50 #include <net/if_dl.h> 51 #include <net/if_ether.h> 52 #include <net/if_media.h> 53 54 #include <machine/cpu.h> 55 #include <machine/bus.h> 56 #include <machine/intr.h> 57 58 #include <dev/ic/lemacreg.h> 59 #include <dev/ic/lemacvar.h> 60 61 #include <dev/isa/isavar.h> 62 63 extern struct cfdriver lc_cd; 64 65 static int lemac_isa_find __P((lemac_softc_t *, struct isa_attach_args *, 66 int)); 67 static int lemac_isa_probe __P((struct device *, struct cfdata *, void *)); 68 static void lemac_isa_attach __P((struct device *, struct device *, void *)); 69 70 struct cfattach lc_isa_ca = { 71 sizeof(lemac_softc_t), lemac_isa_probe, lemac_isa_attach 72 }; 73 74 static int 75 lemac_isa_find(sc, ia, attach) 76 lemac_softc_t *sc; 77 struct isa_attach_args *ia; 78 int attach; 79 { 80 bus_addr_t maddr; 81 bus_addr_t msize; 82 int rv = 0, irq; 83 84 if (ia->ia_nio < 1) 85 return (0); 86 if (ia->ia_niomem < 1) 87 return (0); 88 if (ia->ia_nirq < 1) 89 return (0); 90 91 if (ISA_DIRECT_CONFIG(ia)) 92 return (0); 93 94 /* 95 * Disallow wildcarded i/o addresses. 96 */ 97 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 98 return 0; 99 100 /* 101 * Make sure this is a valid LEMAC address. 102 */ 103 if (ia->ia_io[0].ir_addr & (LEMAC_IOSIZE - 1)) 104 return 0; 105 106 sc->sc_iot = ia->ia_iot; 107 108 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, LEMAC_IOSIZE, 0, 109 &sc->sc_ioh)) { 110 if (attach) 111 printf(": can't map i/o space\n"); 112 return 0; 113 } 114 115 /* 116 * Read the Ethernet address from the EEPROM. 117 * It must start with one of the DEC OUIs and pass the 118 * DEC ethernet checksum test. 119 */ 120 if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0) 121 goto outio; 122 123 /* 124 * Get information about memory space and attempt to map it. 125 */ 126 lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msize, &irq); 127 128 if (ia->ia_iomem[0].ir_addr != ISACF_IOMEM_DEFAULT && 129 ia->ia_iomem[0].ir_addr != maddr) 130 goto outio; 131 132 sc->sc_memt = ia->ia_memt; 133 if (bus_space_map(ia->ia_memt, maddr, msize, 0, &sc->sc_memh)) { 134 if (attach) 135 printf(": can't map mem space\n"); 136 goto outio; 137 } 138 139 140 /* 141 * Double-check IRQ configuration. 142 */ 143 if (ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT && 144 ia->ia_irq[0].ir_irq != irq) 145 printf("%s: overriding IRQ %d to %d\n", sc->sc_dv.dv_xname, 146 ia->ia_irq[0].ir_irq, irq); 147 148 if (attach) { 149 sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc); 150 if (sc->sc_ats == NULL) 151 printf("\n%s: warning: can't establish shutdown hook\n", 152 sc->sc_dv.dv_xname); 153 154 lemac_ifattach(sc); 155 156 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE, 157 IPL_NET, lemac_intr, sc); 158 } 159 160 /* 161 * I guess we've found one. 162 */ 163 rv = 1; 164 165 ia->ia_nio = 1; 166 ia->ia_io[0].ir_size = LEMAC_IOSIZE; 167 168 ia->ia_niomem = 1; 169 ia->ia_iomem[0].ir_addr = maddr; 170 ia->ia_iomem[0].ir_size = msize; 171 172 ia->ia_nirq = 1; 173 ia->ia_irq[0].ir_irq = irq; 174 175 ia->ia_ndrq = 0; 176 177 if (rv == 0 || !attach) 178 bus_space_unmap(sc->sc_memt, sc->sc_memh, msize); 179 outio: 180 if (rv == 0 || !attach) 181 bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE); 182 return rv; 183 } 184 185 static int 186 lemac_isa_probe(parent, match, aux) 187 struct device *parent; 188 struct cfdata *match; 189 void *aux; 190 { 191 struct isa_attach_args *ia = aux; 192 struct cfdata *cf = match; 193 lemac_softc_t sc; 194 (void)sprintf(sc.sc_dv.dv_xname, "%s%d", lc_cd.cd_name, cf->cf_unit); 195 196 return lemac_isa_find(&sc, ia, 0); 197 } 198 199 static void 200 lemac_isa_attach(parent, self, aux) 201 struct device *parent; 202 struct device *self; 203 void *aux; 204 { 205 lemac_softc_t *sc = (void *)self; 206 struct isa_attach_args *ia = aux; 207 208 (void) lemac_isa_find(sc, ia, 1); 209 } 210