1 /* $NetBSD: if_le_dec.c,v 1.19 2008/04/04 12:25:07 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell and Rick Macklem. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 35 */ 36 37 /*- 38 * Copyright (c) 1997 Jonathan Stone. All rights reserved. 39 * Copyright (c) 1995 Charles M. Hannum. All rights reserved. 40 * 41 * This code is derived from software contributed to Berkeley by 42 * Ralph Campbell and Rick Macklem. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by the University of 55 * California, Berkeley and its contributors. 56 * 4. Neither the name of the University nor the names of its contributors 57 * may be used to endorse or promote products derived from this software 58 * without specific prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 61 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 62 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 63 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 64 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 65 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 66 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 70 * SUCH DAMAGE. 71 * 72 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 73 */ 74 75 #include <sys/cdefs.h> 76 __KERNEL_RCSID(0, "$NetBSD: if_le_dec.c,v 1.19 2008/04/04 12:25:07 tsutsui Exp $"); 77 78 #include "opt_inet.h" 79 #include "bpfilter.h" 80 81 #include <sys/param.h> 82 #include <sys/systm.h> 83 #include <sys/mbuf.h> 84 #include <sys/syslog.h> 85 #include <sys/socket.h> 86 #include <sys/device.h> 87 88 #include <net/if.h> 89 #include <net/if_ether.h> 90 #include <net/if_media.h> 91 92 #ifdef INET 93 #include <netinet/in.h> 94 #include <netinet/if_inarp.h> 95 #endif 96 97 #include <dev/ic/lancereg.h> 98 #include <dev/ic/lancevar.h> 99 #include <dev/ic/am7990reg.h> 100 #include <dev/ic/am7990var.h> 101 102 #include <dev/tc/if_levar.h> 103 #include <dev/tc/tcvar.h> 104 105 #include <sys/bus.h> 106 107 /* access LANCE registers */ 108 void le_dec_writereg(volatile uint16_t *regptr, uint16_t val); 109 #define LERDWR(cntl, src, dst) { (dst) = (src); tc_mb(); } 110 #define LEWREG(src, dst) le_dec_writereg(&(dst), (src)) 111 112 #if defined(_KERNEL_OPT) 113 #include "opt_ddb.h" 114 #endif 115 116 #ifdef DDB 117 #define integrate 118 #define hide 119 #else 120 #define integrate static inline 121 #define hide static 122 #endif 123 124 hide void le_dec_wrcsr(struct lance_softc *, uint16_t, uint16_t); 125 hide uint16_t le_dec_rdcsr(struct lance_softc *, uint16_t); 126 127 void 128 dec_le_common_attach(struct am7990_softc *sc, uint8_t *eap) 129 { 130 int i; 131 132 sc->lsc.sc_rdcsr = le_dec_rdcsr; 133 sc->lsc.sc_wrcsr = le_dec_wrcsr; 134 sc->lsc.sc_hwinit = NULL; 135 136 sc->lsc.sc_conf3 = 0; 137 sc->lsc.sc_addr = 0; 138 sc->lsc.sc_memsize = 65536; 139 140 /* 141 * Get the ethernet address out of rom 142 */ 143 for (i = 0; i < sizeof(sc->lsc.sc_enaddr); i++) { 144 sc->lsc.sc_enaddr[i] = *eap; 145 eap += 4; 146 } 147 148 am7990_config(sc); 149 } 150 151 hide void 152 le_dec_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 153 { 154 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 155 156 LEWREG(port, ler1->ler1_rap); 157 LERDWR(port, val, ler1->ler1_rdp); 158 } 159 160 hide uint16_t 161 le_dec_rdcsr(struct lance_softc *sc, uint16_t port) 162 { 163 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 164 uint16_t val; 165 166 LEWREG(port, ler1->ler1_rap); 167 LERDWR(0, ler1->ler1_rdp, val); 168 return (val); 169 } 170 171 /* 172 * Write a lance register port, reading it back to ensure success. This seems 173 * to be necessary during initialization, since the chip appears to be a bit 174 * pokey sometimes. 175 */ 176 void 177 le_dec_writereg(volatile uint16_t *regptr, uint16_t val) 178 { 179 int i = 0; 180 181 while (*regptr != val) { 182 *regptr = val; 183 tc_mb(); 184 if (++i > 10000) { 185 printf("le: Reg did not settle (to x%x): x%x\n", val, 186 *regptr); 187 return; 188 } 189 DELAY(100); 190 } 191 } 192 193 /* 194 * Routines for accessing the transmit and receive buffers are provided 195 * by am7990.c, because of the LE_NEED_BUF_* macros defined above. 196 * Unfortunately, CPU addressing of these buffers is done in one of 197 * 3 ways: 198 * - contiguous (for the 3max and turbochannel option card) 199 * - gap2, which means shorts (2 bytes) interspersed with short (2 byte) 200 * spaces (for the pmax, vax 3400, and ioasic LANCE descriptors) 201 * - gap16, which means 16bytes interspersed with 16byte spaces 202 * for buffers which must begin on a 32byte boundary (for 3min, maxine, 203 * and alpha) 204 * The buffer offset is the logical byte offset, assuming contiguous storage. 205 */ 206