1 /* $NetBSD: if_le_dec.c,v 1.21 2017/06/22 16:46:53 flxd 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 1.21 2017/06/22 16:46:53 flxd Exp $"); 77 78 #include "opt_inet.h" 79 80 #include <sys/param.h> 81 #include <sys/systm.h> 82 #include <sys/mbuf.h> 83 #include <sys/syslog.h> 84 #include <sys/socket.h> 85 #include <sys/device.h> 86 87 #include <net/if.h> 88 #include <net/if_ether.h> 89 #include <net/if_media.h> 90 91 #ifdef INET 92 #include <netinet/in.h> 93 #include <netinet/if_inarp.h> 94 #endif 95 96 #include <dev/ic/lancereg.h> 97 #include <dev/ic/lancevar.h> 98 #include <dev/ic/am7990reg.h> 99 #include <dev/ic/am7990var.h> 100 101 #include <dev/tc/if_levar.h> 102 #include <dev/tc/tcvar.h> 103 104 #include <sys/bus.h> 105 106 /* access LANCE registers */ 107 void le_dec_writereg(volatile uint16_t *regptr, uint16_t val); 108 #define LERDWR(cntl, src, dst) { (dst) = (src); tc_mb(); } 109 #define LEWREG(src, dst) le_dec_writereg(&(dst), (src)) 110 111 #if defined(_KERNEL_OPT) 112 #include "opt_ddb.h" 113 #endif 114 115 #ifdef DDB 116 #define integrate 117 #define hide 118 #else 119 #define integrate static inline 120 #define hide static 121 #endif 122 123 hide void le_dec_wrcsr(struct lance_softc *, uint16_t, uint16_t); 124 hide uint16_t le_dec_rdcsr(struct lance_softc *, uint16_t); 125 126 void 127 dec_le_common_attach(struct am7990_softc *sc, uint8_t *eap) 128 { 129 int i; 130 131 sc->lsc.sc_rdcsr = le_dec_rdcsr; 132 sc->lsc.sc_wrcsr = le_dec_wrcsr; 133 sc->lsc.sc_hwinit = NULL; 134 135 sc->lsc.sc_conf3 = 0; 136 sc->lsc.sc_addr = 0; 137 sc->lsc.sc_memsize = 65536; 138 139 /* 140 * Get the ethernet address out of rom 141 */ 142 for (i = 0; i < sizeof(sc->lsc.sc_enaddr); i++) { 143 sc->lsc.sc_enaddr[i] = *eap; 144 eap += 4; 145 } 146 147 am7990_config(sc); 148 } 149 150 hide void 151 le_dec_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 152 { 153 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 154 155 LEWREG(port, ler1->ler1_rap); 156 LERDWR(port, val, ler1->ler1_rdp); 157 } 158 159 hide uint16_t 160 le_dec_rdcsr(struct lance_softc *sc, uint16_t port) 161 { 162 struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 163 uint16_t val; 164 165 LEWREG(port, ler1->ler1_rap); 166 LERDWR(0, ler1->ler1_rdp, val); 167 return (val); 168 } 169 170 /* 171 * Write a lance register port, reading it back to ensure success. This seems 172 * to be necessary during initialization, since the chip appears to be a bit 173 * pokey sometimes. 174 */ 175 void 176 le_dec_writereg(volatile uint16_t *regptr, uint16_t val) 177 { 178 int i = 0; 179 180 while (*regptr != val) { 181 *regptr = val; 182 tc_mb(); 183 if (++i > 10000) { 184 printf("le: Reg did not settle (to x%x): x%x\n", val, 185 *regptr); 186 return; 187 } 188 DELAY(100); 189 } 190 } 191 192 /* 193 * Routines for accessing the transmit and receive buffers are provided 194 * by am7990.c, because of the LE_NEED_BUF_* macros defined above. 195 * Unfortunately, CPU addressing of these buffers is done in one of 196 * 3 ways: 197 * - contiguous (for the 3max and TURBOchannel option card) 198 * - gap2, which means shorts (2 bytes) interspersed with short (2 byte) 199 * spaces (for the pmax, vax 3400, and ioasic LANCE descriptors) 200 * - gap16, which means 16bytes interspersed with 16byte spaces 201 * for buffers which must begin on a 32byte boundary (for 3min, maxine, 202 * and alpha) 203 * The buffer offset is the logical byte offset, assuming contiguous storage. 204 */ 205
Indexes created Sat Sep 20 22:09:52 GMT 2025