if_le_lebuffer.c revision 1.12
1 /* $NetBSD: if_le_lebuffer.c,v 1.12 2002/09/27 02:24:32 thorpej 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 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: if_le_lebuffer.c,v 1.12 2002/09/27 02:24:32 thorpej Exp $"); 42 43 #include "opt_inet.h" 44 #include "bpfilter.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/mbuf.h> 49 #include <sys/syslog.h> 50 #include <sys/socket.h> 51 #include <sys/device.h> 52 #include <sys/malloc.h> 53 54 #include <net/if.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 58 #ifdef INET 59 #include <netinet/in.h> 60 #include <netinet/if_inarp.h> 61 #endif 62 63 #include <machine/bus.h> 64 #include <machine/intr.h> 65 #include <machine/autoconf.h> 66 67 #include <dev/sbus/sbusvar.h> 68 #include <dev/sbus/lebuffervar.h> 69 70 #include <dev/ic/lancereg.h> 71 #include <dev/ic/lancevar.h> 72 #include <dev/ic/am7990reg.h> 73 #include <dev/ic/am7990var.h> 74 75 /* 76 * LANCE registers. 77 */ 78 #define LEREG1_RDP 0 /* Register Data port */ 79 #define LEREG1_RAP 2 /* Register Address port */ 80 81 struct le_softc { 82 struct am7990_softc sc_am7990; /* glue to MI code */ 83 struct sbusdev sc_sd; /* sbus device */ 84 bus_space_tag_t sc_bustag; 85 bus_dma_tag_t sc_dmatag; 86 bus_space_handle_t sc_reg; /* LANCE registers */ 87 }; 88 89 90 int lematch_lebuffer __P((struct device *, struct cfdata *, void *)); 91 void leattach_lebuffer __P((struct device *, struct device *, void *)); 92 93 /* 94 * Media types supported. 95 */ 96 static int lemedia[] = { 97 IFM_ETHER|IFM_10_T, 98 }; 99 #define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0])) 100 101 struct cfattach le_lebuffer_ca = { 102 sizeof(struct le_softc), lematch_lebuffer, leattach_lebuffer 103 }; 104 105 extern struct cfdriver le_cd; 106 107 #if defined(_KERNEL_OPT) 108 #include "opt_ddb.h" 109 #endif 110 111 #ifdef DDB 112 #define integrate 113 #define hide 114 #else 115 #define integrate static __inline 116 #define hide static 117 #endif 118 119 static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t)); 120 static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t)); 121 122 static void 123 lewrcsr(sc, port, val) 124 struct lance_softc *sc; 125 u_int16_t port, val; 126 { 127 struct le_softc *lesc = (struct le_softc *)sc; 128 129 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 130 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val); 131 132 #if defined(SUN4M) 133 /* 134 * We need to flush the Sbus->Mbus write buffers. This can most 135 * easily be accomplished by reading back the register that we 136 * just wrote (thanks to Chris Torek for this solution). 137 */ 138 if (CPU_ISSUN4M) { 139 volatile u_int16_t discard; 140 discard = bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, 141 LEREG1_RDP); 142 } 143 #endif 144 } 145 146 static u_int16_t 147 lerdcsr(sc, port) 148 struct lance_softc *sc; 149 u_int16_t port; 150 { 151 struct le_softc *lesc = (struct le_softc *)sc; 152 153 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 154 return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP)); 155 } 156 157 int 158 lematch_lebuffer(parent, cf, aux) 159 struct device *parent; 160 struct cfdata *cf; 161 void *aux; 162 { 163 struct sbus_attach_args *sa = aux; 164 165 return (strcmp(cf->cf_name, sa->sa_name) == 0); 166 } 167 168 169 void 170 leattach_lebuffer(parent, self, aux) 171 struct device *parent, *self; 172 void *aux; 173 { 174 struct sbus_attach_args *sa = aux; 175 struct le_softc *lesc = (struct le_softc *)self; 176 struct lance_softc *sc = &lesc->sc_am7990.lsc; 177 struct lebuf_softc *lebuf = (struct lebuf_softc *)parent; 178 /* XXX the following declarations should be elsewhere */ 179 extern void myetheraddr __P((u_char *)); 180 181 lesc->sc_bustag = sa->sa_bustag; 182 lesc->sc_dmatag = sa->sa_dmatag; 183 184 if (sbus_bus_map(sa->sa_bustag, 185 sa->sa_slot, 186 sa->sa_offset, 187 sa->sa_size, 188 0, &lesc->sc_reg)) { 189 printf("%s @ lebuffer: cannot map registers\n", self->dv_xname); 190 return; 191 } 192 193 sc->sc_mem = lebuf->sc_buffer; 194 sc->sc_memsize = lebuf->sc_bufsiz; 195 sc->sc_addr = 0; /* Lance view is offset by buffer location */ 196 lebuf->attached = 1; 197 198 /* That old black magic... */ 199 sc->sc_conf3 = PROM_getpropint(sa->sa_node, "busmaster-regval", 200 LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON); 201 202 /* Assume SBus is grandparent */ 203 lesc->sc_sd.sd_reset = (void *)lance_reset; 204 sbus_establish(&lesc->sc_sd, parent); 205 206 sc->sc_supmedia = lemedia; 207 sc->sc_nsupmedia = NLEMEDIA; 208 sc->sc_defaultmedia = lemedia[0]; 209 210 myetheraddr(sc->sc_enaddr); 211 212 sc->sc_copytodesc = lance_copytobuf_contig; 213 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 214 sc->sc_copytobuf = lance_copytobuf_contig; 215 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 216 sc->sc_zerobuf = lance_zerobuf_contig; 217 218 sc->sc_rdcsr = lerdcsr; 219 sc->sc_wrcsr = lewrcsr; 220 221 am7990_config(&lesc->sc_am7990); 222 223 /* Establish interrupt handler */ 224 if (sa->sa_nintr != 0) 225 (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 226 IPL_NET, 0, am7990_intr, sc); 227 } 228
Indexes created Tue Sep 23 14:10:03 GMT 2025