if_le_lebuffer.c revision 1.3
1 /* $NetBSD: if_le_lebuffer.c,v 1.3 1998/08/29 20:32:11 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace 9 * Simulation Facility, NASA Ames Research Center; Paul Kranenburg. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 41 #include "opt_inet.h" 42 #include "bpfilter.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/mbuf.h> 47 #include <sys/syslog.h> 48 #include <sys/socket.h> 49 #include <sys/device.h> 50 #include <sys/malloc.h> 51 52 #include <net/if.h> 53 #include <net/if_ether.h> 54 #include <net/if_media.h> 55 56 #ifdef INET 57 #include <netinet/in.h> 58 #include <netinet/if_inarp.h> 59 #endif 60 61 #include <machine/autoconf.h> 62 #include <machine/cpu.h> 63 64 #include <dev/sbus/sbusvar.h> 65 #include <dev/sbus/lebuffervar.h> 66 67 #include <dev/ic/lancereg.h> 68 #include <dev/ic/lancevar.h> 69 #include <dev/ic/am7990reg.h> 70 #include <dev/ic/am7990var.h> 71 72 /* 73 * LANCE registers. 74 */ 75 #define LEREG1_RDP 0 /* Register Data port */ 76 #define LEREG1_RAP 2 /* Register Address port */ 77 78 struct le_softc { 79 struct am7990_softc sc_am7990; /* glue to MI code */ 80 struct sbusdev sc_sd; /* sbus device */ 81 bus_space_tag_t sc_bustag; 82 bus_dma_tag_t sc_dmatag; 83 bus_space_handle_t sc_reg; /* LANCE registers */ 84 }; 85 86 87 int lematch_lebuffer __P((struct device *, struct cfdata *, void *)); 88 void leattach_lebuffer __P((struct device *, struct device *, void *)); 89 90 /* 91 * Media types supported. 92 */ 93 static int lemedia[] = { 94 IFM_ETHER|IFM_10_T, 95 }; 96 #define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0])) 97 98 struct cfattach le_lebuffer_ca = { 99 sizeof(struct le_softc), lematch_lebuffer, leattach_lebuffer 100 }; 101 102 extern struct cfdriver le_cd; 103 104 #if defined(_KERNEL) && !defined(_LKM) 105 #include "opt_ddb.h" 106 #endif 107 108 #ifdef DDB 109 #define integrate 110 #define hide 111 #else 112 #define integrate static __inline 113 #define hide static 114 #endif 115 116 static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t)); 117 static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t)); 118 119 static void 120 lewrcsr(sc, port, val) 121 struct lance_softc *sc; 122 u_int16_t port, val; 123 { 124 struct le_softc *lesc = (struct le_softc *)sc; 125 126 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 127 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val); 128 129 #if defined(SUN4M) 130 /* 131 * We need to flush the Sbus->Mbus write buffers. This can most 132 * easily be accomplished by reading back the register that we 133 * just wrote (thanks to Chris Torek for this solution). 134 */ 135 if (CPU_ISSUN4M) { 136 volatile u_int16_t discard; 137 discard = bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, 138 LEREG1_RDP); 139 } 140 #endif 141 } 142 143 static u_int16_t 144 lerdcsr(sc, port) 145 struct lance_softc *sc; 146 u_int16_t port; 147 { 148 struct le_softc *lesc = (struct le_softc *)sc; 149 150 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 151 return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP)); 152 } 153 154 int 155 lematch_lebuffer(parent, cf, aux) 156 struct device *parent; 157 struct cfdata *cf; 158 void *aux; 159 { 160 struct sbus_attach_args *sa = aux; 161 162 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 163 } 164 165 166 #define SAME_LANCE(bp, sa) \ 167 (bp->val[0] == sa->sa_slot && bp->val[1] == sa->sa_offset) 168 169 170 void 171 leattach_lebuffer(parent, self, aux) 172 struct device *parent, *self; 173 void *aux; 174 { 175 struct sbus_attach_args *sa = aux; 176 struct le_softc *lesc = (struct le_softc *)self; 177 struct lance_softc *sc = &lesc->sc_am7990.lsc; 178 struct lebuf_softc *lebuf = (struct lebuf_softc *)parent; 179 /* XXX the following declarations should be elsewhere */ 180 extern void myetheraddr __P((u_char *)); 181 182 lesc->sc_bustag = sa->sa_bustag; 183 lesc->sc_dmatag = sa->sa_dmatag; 184 185 if (bus_space_map2(sa->sa_bustag, 186 sa->sa_slot, 187 sa->sa_offset, 188 sa->sa_size, 189 BUS_SPACE_MAP_LINEAR, 190 0, &lesc->sc_reg)) { 191 printf("%s @ lebuffer: cannot map registers\n", self->dv_xname); 192 return; 193 } 194 195 sc->sc_mem = lebuf->sc_buffer; 196 sc->sc_memsize = lebuf->sc_bufsiz; 197 sc->sc_addr = 0; /* Lance view is offset by buffer location */ 198 lebuf->attached = 1; 199 200 /* That old black magic... */ 201 sc->sc_conf3 = getpropint(sa->sa_node, "busmaster-regval", 202 LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON); 203 204 /* Assume SBus is grandparent */ 205 lesc->sc_sd.sd_reset = (void *)lance_reset; 206 sbus_establish(&lesc->sc_sd, parent); 207 208 if (sa->sa_bp != NULL && strcmp(sa->sa_bp->name, le_cd.cd_name) == 0 && 209 SAME_LANCE(sa->sa_bp, sa)) 210 sa->sa_bp->dev = &sc->sc_dev; 211 212 sc->sc_supmedia = lemedia; 213 sc->sc_nsupmedia = NLEMEDIA; 214 sc->sc_defaultmedia = lemedia[0]; 215 216 myetheraddr(sc->sc_enaddr); 217 218 sc->sc_copytodesc = lance_copytobuf_contig; 219 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 220 sc->sc_copytobuf = lance_copytobuf_contig; 221 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 222 sc->sc_zerobuf = lance_zerobuf_contig; 223 224 sc->sc_rdcsr = lerdcsr; 225 sc->sc_wrcsr = lewrcsr; 226 227 am7990_config(&lesc->sc_am7990); 228 229 (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 0, 230 am7990_intr, sc); 231 } 232
Indexes created Wed Sep 24 05:09:52 GMT 2025