1 /* $NetBSD: if_lc_isa.c,v 1.33 2009/05/12 09:10:15 cegger 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 1.33 2009/05/12 09:10:15 cegger 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 <sys/cpu.h> 55 #include <sys/bus.h> 56 #include <sys/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(lemac_softc_t *, struct isa_attach_args *, int); 66 static int lemac_isa_probe(device_t, cfdata_t, void *); 67 static void lemac_isa_attach(device_t, device_t, void *); 68 69 CFATTACH_DECL(lc_isa, sizeof(lemac_softc_t), 70 lemac_isa_probe, lemac_isa_attach, NULL, NULL); 71 72 static int 73 lemac_isa_find(lemac_softc_t *sc, struct isa_attach_args *ia, int attach) 74 { 75 bus_addr_t maddr; 76 bus_size_t msiz; 77 int rv = 0, irq; 78 79 if (ia->ia_nio < 1) 80 return (0); 81 if (ia->ia_niomem < 1) 82 return (0); 83 if (ia->ia_nirq < 1) 84 return (0); 85 86 if (ISA_DIRECT_CONFIG(ia)) 87 return (0); 88 89 /* 90 * Disallow wildcarded i/o addresses. 91 */ 92 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 93 return 0; 94 95 /* 96 * Make sure this is a valid LEMAC address. 97 */ 98 if (ia->ia_io[0].ir_addr & (LEMAC_IOSIZE - 1)) 99 return 0; 100 101 sc->sc_iot = ia->ia_iot; 102 103 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, LEMAC_IOSIZE, 0, 104 &sc->sc_ioh)) { 105 if (attach) 106 printf(": can't map i/o space\n"); 107 return 0; 108 } 109 110 /* 111 * Read the Ethernet address from the EEPROM. 112 * It must start with one of the DEC OUIs and pass the 113 * DEC ethernet checksum test. 114 */ 115 if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0) 116 goto outio; 117 118 /* 119 * Get information about memory space and attempt to map it. 120 */ 121 lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msiz, &irq); 122 123 if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM && 124 ia->ia_iomem[0].ir_addr != maddr) 125 goto outio; 126 127 if (attach) { 128 if (msiz == 0) { 129 printf(": memory configuration is invalid\n"); 130 goto outio; 131 } 132 133 sc->sc_memt = ia->ia_memt; 134 if (bus_space_map(ia->ia_memt, maddr, msiz, 0, &sc->sc_memh)) { 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 != ISA_UNKNOWN_IRQ && 144 ia->ia_irq[0].ir_irq != irq) 145 printf("%s: overriding IRQ %d to %d\n", device_xname(&sc->sc_dv), 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 aprint_normal("\n"); 152 aprint_error_dev(&sc->sc_dv, "warning: can't establish shutdown hook\n"); 153 } 154 155 lemac_ifattach(sc); 156 157 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE, 158 IPL_NET, lemac_intr, sc); 159 } 160 161 /* 162 * I guess we've found one. 163 */ 164 rv = 1; 165 166 ia->ia_nio = 1; 167 ia->ia_io[0].ir_size = LEMAC_IOSIZE; 168 169 ia->ia_niomem = 1; 170 ia->ia_iomem[0].ir_addr = maddr; 171 ia->ia_iomem[0].ir_size = msiz; 172 173 ia->ia_nirq = 1; 174 ia->ia_irq[0].ir_irq = irq; 175 176 ia->ia_ndrq = 0; 177 178 outio: 179 if (rv == 0 || !attach) 180 bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE); 181 return rv; 182 } 183 184 static int 185 lemac_isa_probe(device_t parent, cfdata_t match, void *aux) 186 { 187 struct isa_attach_args *ia = aux; 188 cfdata_t cf = match; 189 lemac_softc_t sc; 190 snprintf(sc.sc_dv.dv_xname, sizeof(sc.sc_dv.dv_xname), "%s%d", 191 lc_cd.cd_name, cf->cf_unit); 192 193 return lemac_isa_find(&sc, ia, 0); 194 } 195 196 static void 197 lemac_isa_attach(device_t parent, device_t self, void *aux) 198 { 199 lemac_softc_t *sc = (void *)self; 200 struct isa_attach_args *ia = aux; 201 202 (void) lemac_isa_find(sc, ia, 1); 203 } 204