1 /* $NetBSD: if_le_lebuffer.c,v 1.19 2004/03/17 17:04:58 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 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: if_le_lebuffer.c,v 1.19 2004/03/17 17:04:58 pk 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 CFATTACH_DECL(le_lebuffer, sizeof(struct le_softc), 102 lematch_lebuffer, leattach_lebuffer, NULL, NULL); 103 104 extern struct cfdriver le_cd; 105 106 #if defined(_KERNEL_OPT) 107 #include "opt_ddb.h" 108 #endif 109 110 static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t)); 111 static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t)); 112 113 static void 114 lewrcsr(sc, port, val) 115 struct lance_softc *sc; 116 u_int16_t port, val; 117 { 118 struct le_softc *lesc = (struct le_softc *)sc; 119 bus_space_tag_t t = lesc->sc_bustag; 120 bus_space_handle_t h = lesc->sc_reg; 121 122 bus_space_write_2(t, h, LEREG1_RAP, port); 123 bus_space_write_2(t, h, LEREG1_RDP, val); 124 125 #if defined(SUN4M) 126 /* 127 * We need to flush the Sbus->Mbus write buffers. This can most 128 * easily be accomplished by reading back the register that we 129 * just wrote (thanks to Chris Torek for this solution). 130 */ 131 (void)bus_space_read_2(t, h, LEREG1_RDP); 132 #endif 133 } 134 135 static u_int16_t 136 lerdcsr(sc, port) 137 struct lance_softc *sc; 138 u_int16_t port; 139 { 140 struct le_softc *lesc = (struct le_softc *)sc; 141 bus_space_tag_t t = lesc->sc_bustag; 142 bus_space_handle_t h = lesc->sc_reg; 143 144 bus_space_write_2(t, h, LEREG1_RAP, port); 145 return (bus_space_read_2(t, h, LEREG1_RDP)); 146 } 147 148 int 149 lematch_lebuffer(parent, cf, aux) 150 struct device *parent; 151 struct cfdata *cf; 152 void *aux; 153 { 154 struct sbus_attach_args *sa = aux; 155 156 return (strcmp(cf->cf_name, sa->sa_name) == 0); 157 } 158 159 160 void 161 leattach_lebuffer(parent, self, aux) 162 struct device *parent, *self; 163 void *aux; 164 { 165 struct sbus_attach_args *sa = aux; 166 struct le_softc *lesc = (struct le_softc *)self; 167 struct lance_softc *sc = &lesc->sc_am7990.lsc; 168 struct lebuf_softc *lebuf = (struct lebuf_softc *)parent; 169 170 lesc->sc_bustag = sa->sa_bustag; 171 lesc->sc_dmatag = sa->sa_dmatag; 172 173 if (sbus_bus_map(sa->sa_bustag, 174 sa->sa_slot, 175 sa->sa_offset, 176 sa->sa_size, 177 0, &lesc->sc_reg)) { 178 printf("%s @ lebuffer: cannot map registers\n", self->dv_xname); 179 return; 180 } 181 182 sc->sc_mem = lebuf->sc_buffer; 183 sc->sc_memsize = lebuf->sc_bufsiz; 184 sc->sc_addr = 0; /* Lance view is offset by buffer location */ 185 lebuf->attached = 1; 186 187 /* That old black magic... */ 188 sc->sc_conf3 = prom_getpropint(sa->sa_node, "busmaster-regval", 189 LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON); 190 191 /* Assume SBus is grandparent */ 192 lesc->sc_sd.sd_reset = (void *)lance_reset; 193 sbus_establish(&lesc->sc_sd, parent); 194 195 sc->sc_supmedia = lemedia; 196 sc->sc_nsupmedia = NLEMEDIA; 197 sc->sc_defaultmedia = lemedia[0]; 198 199 prom_getether(sa->sa_node, sc->sc_enaddr); 200 201 sc->sc_copytodesc = lance_copytobuf_contig; 202 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 203 sc->sc_copytobuf = lance_copytobuf_contig; 204 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 205 sc->sc_zerobuf = lance_zerobuf_contig; 206 207 sc->sc_rdcsr = lerdcsr; 208 sc->sc_wrcsr = lewrcsr; 209 210 am7990_config(&lesc->sc_am7990); 211 212 /* Establish interrupt handler */ 213 if (sa->sa_nintr != 0) 214 (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 215 IPL_NET, am7990_intr, sc); 216 } 217