if_le_dec.c revision 1.17
1 /* $NetBSD: if_le_dec.c,v 1.17 2005/12/24 20:27:29 perry 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 1.17 2005/12/24 20:27:29 perry 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 <machine/bus.h> 106 107 /* access LANCE registers */ 108 void le_dec_writereg(volatile u_short *regptr, u_short 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 *, u_int16_t, u_int16_t); 125 hide u_int16_t le_dec_rdcsr(struct lance_softc *, u_int16_t); 126 127 void 128 dec_le_common_attach(sc, eap) 129 struct am7990_softc *sc; 130 u_char *eap; 131 { 132 int i; 133 134 sc->lsc.sc_rdcsr = le_dec_rdcsr; 135 sc->lsc.sc_wrcsr = le_dec_wrcsr; 136 sc->lsc.sc_hwinit = NULL; 137 138 sc->lsc.sc_conf3 = 0; 139 sc->lsc.sc_addr = 0; 140 sc->lsc.sc_memsize = 65536; 141 142 /* 143 * Get the ethernet address out of rom 144 */ 145 for (i = 0; i < sizeof(sc->lsc.sc_enaddr); i++) { 146 sc->lsc.sc_enaddr[i] = *eap; 147 eap += 4; 148 } 149 150 am7990_config(sc); 151 } 152 153 hide void 154 le_dec_wrcsr(sc, port, val) 155 struct lance_softc *sc; 156 u_int16_t port, val; 157 { 158 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 159 160 LEWREG(port, ler1->ler1_rap); 161 LERDWR(port, val, ler1->ler1_rdp); 162 } 163 164 hide u_int16_t 165 le_dec_rdcsr(sc, port) 166 struct lance_softc *sc; 167 u_int16_t port; 168 { 169 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 170 u_int16_t val; 171 172 LEWREG(port, ler1->ler1_rap); 173 LERDWR(0, ler1->ler1_rdp, val); 174 return (val); 175 } 176 177 /* 178 * Write a lance register port, reading it back to ensure success. This seems 179 * to be necessary during initialization, since the chip appears to be a bit 180 * pokey sometimes. 181 */ 182 void 183 le_dec_writereg(regptr, val) 184 register volatile u_short *regptr; 185 register u_short val; 186 { 187 register int i = 0; 188 189 while (*regptr != val) { 190 *regptr = val; 191 tc_mb(); 192 if (++i > 10000) { 193 printf("le: Reg did not settle (to x%x): x%x\n", val, 194 *regptr); 195 return; 196 } 197 DELAY(100); 198 } 199 } 200 201 /* 202 * Routines for accessing the transmit and receive buffers are provided 203 * by am7990.c, because of the LE_NEED_BUF_* macros defined above. 204 * Unfortunately, CPU addressing of these buffers is done in one of 205 * 3 ways: 206 * - contiguous (for the 3max and turbochannel option card) 207 * - gap2, which means shorts (2 bytes) interspersed with short (2 byte) 208 * spaces (for the pmax, vax 3400, and ioasic LANCE descriptors) 209 * - gap16, which means 16bytes interspersed with 16byte spaces 210 * for buffers which must begin on a 32byte boundary (for 3min, maxine, 211 * and alpha) 212 * The buffer offset is the logical byte offset, assuming contiguous storage. 213 */ 214
Indexes created Mon Sep 22 21:09:42 GMT 2025