if_le.c revision 1.3
1 /* $NetBSD: if_le.c,v 1.3 2001/05/30 12:28:46 mrg Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Adam Glass, Gordon W. Ross and Wayne Knowles 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include "opt_inet.h" 40 #include "bpfilter.h" 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/mbuf.h> 45 #include <sys/syslog.h> 46 #include <sys/socket.h> 47 #include <sys/device.h> 48 49 #include <net/if.h> 50 #include <net/if_ether.h> 51 #include <net/if_media.h> 52 53 #ifdef INET 54 #include <netinet/in.h> 55 #include <netinet/if_inarp.h> 56 #endif 57 58 #include <machine/cpu.h> 59 #include <machine/mainboard.h> 60 #include <machine/autoconf.h> 61 #include <machine/bus.h> 62 63 #include <dev/ic/lancereg.h> 64 #include <dev/ic/lancevar.h> 65 #include <dev/ic/am7990reg.h> 66 #include <dev/ic/am7990var.h> 67 68 /* 69 * LANCE registers. 70 */ 71 72 #define LEREG1_RDP 2 /* Offset to LANCE data register */ 73 #define LEREG1_RAP 6 /* Offset to LANCE address register */ 74 75 /* 76 * Ethernet software status per interface. 77 * The real stuff is in dev/ic/am7990var.h 78 */ 79 struct le_softc { 80 struct am7990_softc sc_am7990; /* glue to MI code */ 81 bus_space_tag_t sc_bustag; 82 bus_dma_tag_t sc_dmatag; 83 bus_space_handle_t sc_reg; /* LANCE registers */ 84 bus_dmamap_t sc_dmamap; 85 struct evcnt sc_intrcnt; /* Interrupt event counter */ 86 }; 87 88 static int le_match __P((struct device *, struct cfdata *, void *)); 89 static void le_attach __P((struct device *, struct device *, void *)); 90 91 struct cfattach le_ca = { 92 sizeof(struct le_softc), le_match, le_attach 93 }; 94 95 #if defined(_KERNEL_OPT) 96 #include "opt_ddb.h" 97 #endif 98 99 #ifdef DDB 100 #define integrate 101 #define hide 102 #else 103 #define integrate static __inline 104 #define hide static 105 #endif 106 107 int le_intr __P((void *)); 108 109 hide void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t)); 110 hide u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t)); 111 112 hide void 113 lewrcsr(sc, port, val) 114 struct lance_softc *sc; 115 u_int16_t port, val; 116 { 117 struct le_softc *lesc = (struct le_softc *)sc; 118 119 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 120 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val); 121 } 122 123 hide u_int16_t 124 lerdcsr(sc, port) 125 struct lance_softc *sc; 126 u_int16_t port; 127 { 128 struct le_softc *lesc = (struct le_softc *)sc; 129 130 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 131 return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP)); 132 } 133 134 int 135 le_match(parent, cf, aux) 136 struct device *parent; 137 struct cfdata *cf; 138 void *aux; 139 { 140 struct confargs *ca = aux; 141 int addr; 142 143 if (strcmp(ca->ca_name, "le")) 144 return 0; 145 146 switch(cf->cf_unit) { 147 148 case 0: 149 addr = LANCE_PORT; 150 break; 151 default: 152 return 0; 153 } 154 155 if (badaddr((void *)addr, 1)) 156 return 0; 157 158 return 1; 159 } 160 161 #define LE_MEMSIZE (32*1024) 162 163 void 164 le_attach(parent, self, aux) 165 struct device *parent, *self; 166 void *aux; 167 { 168 struct le_softc *lesc = (struct le_softc *)self; 169 struct lance_softc *sc = &lesc->sc_am7990.lsc; 170 struct confargs *ca = aux; 171 172 bus_dma_tag_t dmat; 173 bus_dma_segment_t seg; 174 int rseg; 175 176 /*struct confargs *ca = aux;*/ 177 u_char *id; 178 int i; 179 caddr_t kvaddr; 180 181 switch (sc->sc_dev.dv_unit) { 182 case 0: 183 id = (u_char *)(ETHER_ID); 184 break; 185 default: 186 panic("le_attach"); 187 } 188 189 lesc->sc_bustag = ca->ca_bustag; 190 dmat = lesc->sc_dmatag = ca->ca_dmatag; 191 192 if (bus_space_map(ca->ca_bustag, ca->ca_addr, 193 8, /* size */ 194 BUS_SPACE_MAP_LINEAR, 195 &lesc->sc_reg) != 0) { 196 printf(": cannot map registers\n"); 197 return; 198 } 199 200 /* 201 * Allocate a physically contiguous DMA area for the chip. 202 */ 203 if (bus_dmamem_alloc(dmat, LE_MEMSIZE, 0, 0, &seg, 1, 204 &rseg, BUS_DMA_NOWAIT)) { 205 printf(": can't allocate DMA area\n"); 206 return; 207 } 208 /* Map pages into kernel memory */ 209 if (bus_dmamem_map(dmat, &seg, rseg, LE_MEMSIZE, 210 &kvaddr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 211 printf(": can't map DMA area\n"); 212 bus_dmamem_free(dmat, &seg, rseg); 213 return; 214 } 215 /* Build DMA map so we can get physical address */ 216 if (bus_dmamap_create(dmat, LE_MEMSIZE, 1, LE_MEMSIZE, 217 0, BUS_DMA_NOWAIT, &lesc->sc_dmamap)) { 218 printf(": can't create DMA map\n"); 219 goto bad; 220 } 221 if (bus_dmamap_load(dmat, lesc->sc_dmamap, kvaddr, LE_MEMSIZE, 222 NULL, BUS_DMA_NOWAIT)) { 223 printf(": can't load DMA map\n"); 224 goto bad; 225 } 226 227 sc->sc_memsize = LE_MEMSIZE; /* 16K Buffer space*/ 228 sc->sc_mem = (void *) MIPS_PHYS_TO_KSEG1(kvaddr); 229 sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr; 230 231 sc->sc_conf3 = LE_C3_BSWP; 232 233 /* Copy Ethernet hardware address from NVRAM */ 234 for (i=0; i < 6; i++) 235 sc->sc_enaddr[i] = id[i*4+3]; /* XXX */ 236 237 sc->sc_copytodesc = lance_copytobuf_contig; 238 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 239 sc->sc_copytobuf = lance_copytobuf_contig; 240 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 241 sc->sc_zerobuf = lance_zerobuf_contig; 242 243 sc->sc_rdcsr = lerdcsr; 244 sc->sc_wrcsr = lewrcsr; 245 sc->sc_hwinit = NULL; 246 247 evcnt_attach_dynamic(&lesc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 248 self->dv_xname, "intr"); 249 bus_intr_establish(lesc->sc_bustag, SYS_INTR_ETHER, 0, 0, 250 le_intr, lesc); 251 252 am7990_config(&lesc->sc_am7990); 253 return; 254 255 bad: 256 bus_dmamem_unmap(dmat, kvaddr, LE_MEMSIZE); 257 bus_dmamem_free(dmat, &seg, rseg); 258 } 259 260 int 261 le_intr(arg) 262 void *arg; 263 { 264 struct le_softc *lesc = arg; 265 266 lesc->sc_intrcnt.ev_count++; 267 return am7990_intr(&lesc->sc_am7990); 268 } 269
Indexes created Mon Sep 29 03:10:08 GMT 2025