1 /* $NetBSD: if_lc_isa.c,v 1.35 2016/07/11 11:31:50 msaitoh Exp $ */ 2 3 /*- 4 * Copyright (c) 1994, 1995, 1997 Matt Thomas <matt (at) 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 1.35 2016/07/11 11:31:50 msaitoh 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 *, const char *, 66 struct isa_attach_args *, int); 67 static int lemac_isa_probe(device_t, cfdata_t, void *); 68 static void lemac_isa_attach(device_t, device_t, void *); 69 70 CFATTACH_DECL_NEW(lc_isa, sizeof(lemac_softc_t), 71 lemac_isa_probe, lemac_isa_attach, NULL, NULL); 72 73 static int 74 lemac_isa_find(lemac_softc_t *sc, const char *xname, 75 struct isa_attach_args *ia, int attach) 76 { 77 bus_addr_t maddr; 78 bus_size_t msiz; 79 int rv = 0, irq; 80 81 if (ia->ia_nio < 1) 82 return (0); 83 if (ia->ia_niomem < 1) 84 return (0); 85 if (ia->ia_nirq < 1) 86 return (0); 87 88 if (ISA_DIRECT_CONFIG(ia)) 89 return (0); 90 91 /* 92 * Disallow wildcarded i/o addresses. 93 */ 94 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 95 return 0; 96 97 /* 98 * Make sure this is a valid LEMAC address. 99 */ 100 if (ia->ia_io[0].ir_addr & (LEMAC_IOSIZE - 1)) 101 return 0; 102 103 sc->sc_iot = ia->ia_iot; 104 105 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, LEMAC_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, &msiz, &irq); 124 125 if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM && 126 ia->ia_iomem[0].ir_addr != maddr) 127 goto outio; 128 129 if (attach) { 130 if (msiz == 0) { 131 printf(": memory configuration is invalid\n"); 132 goto outio; 133 } 134 135 sc->sc_memt = ia->ia_memt; 136 if (bus_space_map(ia->ia_memt, maddr, msiz, 0, &sc->sc_memh)) { 137 printf(": can't map mem space\n"); 138 goto outio; 139 } 140 } 141 142 /* 143 * Double-check IRQ configuration. 144 */ 145 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 146 ia->ia_irq[0].ir_irq != irq) 147 printf("%s: overriding IRQ %d to %d\n", xname, 148 ia->ia_irq[0].ir_irq, irq); 149 150 if (attach) { 151 sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc); 152 if (sc->sc_ats == NULL) { 153 aprint_normal("\n"); 154 aprint_error( 155 "%s: warning: can't establish shutdown hook\n", 156 xname); 157 } 158 159 lemac_ifattach(sc); 160 161 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE, 162 IPL_NET, lemac_intr, sc); 163 } 164 165 /* 166 * I guess we've found one. 167 */ 168 rv = 1; 169 170 ia->ia_nio = 1; 171 ia->ia_io[0].ir_size = LEMAC_IOSIZE; 172 173 ia->ia_niomem = 1; 174 ia->ia_iomem[0].ir_addr = maddr; 175 ia->ia_iomem[0].ir_size = msiz; 176 177 ia->ia_nirq = 1; 178 ia->ia_irq[0].ir_irq = irq; 179 180 ia->ia_ndrq = 0; 181 182 outio: 183 if (rv == 0 || !attach) 184 bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE); 185 return rv; 186 } 187 188 static int 189 lemac_isa_probe(device_t parent, cfdata_t match, void *aux) 190 { 191 struct isa_attach_args *ia = aux; 192 cfdata_t cf = match; 193 lemac_softc_t sc; 194 char xname[16]; 195 196 snprintf(xname, sizeof(xname), "%s%d", lc_cd.cd_name, cf->cf_unit); 197 198 return lemac_isa_find(&sc, xname, ia, 0); 199 } 200 201 static void 202 lemac_isa_attach(device_t parent, device_t self, void *aux) 203 { 204 lemac_softc_t *sc = device_private(self); 205 struct isa_attach_args *ia = aux; 206 207 sc->sc_dev = self; 208 (void) lemac_isa_find(sc, device_xname(self), ia, 1); 209 } 210
Indexes created Thu Oct 23 22:10:10 GMT 2025