if_le.c revision 1.6
1 /* $NetBSD: if_le.c,v 1.6 2003/07/15 02:43:43 lukem 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 <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: if_le.c,v 1.6 2003/07/15 02:43:43 lukem Exp $"); 41 42 #include "opt_inet.h" 43 #include "bpfilter.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/mbuf.h> 48 #include <sys/syslog.h> 49 #include <sys/socket.h> 50 #include <sys/device.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/cpu.h> 62 #include <machine/mainboard.h> 63 #include <machine/autoconf.h> 64 #include <machine/bus.h> 65 66 #include <dev/ic/lancereg.h> 67 #include <dev/ic/lancevar.h> 68 #include <dev/ic/am7990reg.h> 69 #include <dev/ic/am7990var.h> 70 71 /* 72 * LANCE registers. 73 */ 74 75 #define LEREG1_RDP 2 /* Offset to LANCE data register */ 76 #define LEREG1_RAP 6 /* Offset to LANCE address register */ 77 78 /* 79 * Ethernet software status per interface. 80 * The real stuff is in dev/ic/am7990var.h 81 */ 82 struct le_softc { 83 struct am7990_softc sc_am7990; /* glue to MI code */ 84 bus_space_tag_t sc_bustag; 85 bus_dma_tag_t sc_dmatag; 86 bus_space_handle_t sc_reg; /* LANCE registers */ 87 bus_dmamap_t sc_dmamap; 88 struct evcnt sc_intrcnt; /* Interrupt event counter */ 89 }; 90 91 static int le_match __P((struct device *, struct cfdata *, void *)); 92 static void le_attach __P((struct device *, struct device *, void *)); 93 94 CFATTACH_DECL(le, sizeof(struct le_softc), 95 le_match, le_attach, NULL, NULL); 96 97 #if defined(_KERNEL_OPT) 98 #include "opt_ddb.h" 99 #endif 100 101 #ifdef DDB 102 #define integrate 103 #define hide 104 #else 105 #define integrate static __inline 106 #define hide static 107 #endif 108 109 int le_intr __P((void *)); 110 111 hide void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t)); 112 hide u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t)); 113 114 hide void 115 lewrcsr(sc, port, val) 116 struct lance_softc *sc; 117 u_int16_t port, val; 118 { 119 struct le_softc *lesc = (struct le_softc *)sc; 120 121 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 122 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val); 123 } 124 125 hide u_int16_t 126 lerdcsr(sc, port) 127 struct lance_softc *sc; 128 u_int16_t port; 129 { 130 struct le_softc *lesc = (struct le_softc *)sc; 131 132 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 133 return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP)); 134 } 135 136 int 137 le_match(parent, cf, aux) 138 struct device *parent; 139 struct cfdata *cf; 140 void *aux; 141 { 142 struct confargs *ca = aux; 143 int addr; 144 145 if (strcmp(ca->ca_name, "le")) 146 return 0; 147 148 switch(cf->cf_unit) { 149 150 case 0: 151 addr = LANCE_PORT; 152 break; 153 default: 154 return 0; 155 } 156 157 if (badaddr((void *)addr, 1)) 158 return 0; 159 160 return 1; 161 } 162 163 #define LE_MEMSIZE (32*1024) 164 165 void 166 le_attach(parent, self, aux) 167 struct device *parent, *self; 168 void *aux; 169 { 170 struct le_softc *lesc = (struct le_softc *)self; 171 struct lance_softc *sc = &lesc->sc_am7990.lsc; 172 struct confargs *ca = aux; 173 174 bus_dma_tag_t dmat; 175 bus_dma_segment_t seg; 176 int rseg; 177 178 /*struct confargs *ca = aux;*/ 179 u_char *id; 180 int i; 181 caddr_t kvaddr; 182 183 switch (sc->sc_dev.dv_unit) { 184 case 0: 185 id = (u_char *)(ETHER_ID); 186 break; 187 default: 188 panic("le_attach"); 189 } 190 191 lesc->sc_bustag = ca->ca_bustag; 192 dmat = lesc->sc_dmatag = ca->ca_dmatag; 193 194 if (bus_space_map(ca->ca_bustag, ca->ca_addr, 195 8, /* size */ 196 BUS_SPACE_MAP_LINEAR, 197 &lesc->sc_reg) != 0) { 198 printf(": cannot map registers\n"); 199 return; 200 } 201 202 /* 203 * Allocate a physically contiguous DMA area for the chip. 204 */ 205 if (bus_dmamem_alloc(dmat, LE_MEMSIZE, 0, 0, &seg, 1, 206 &rseg, BUS_DMA_NOWAIT)) { 207 printf(": can't allocate DMA area\n"); 208 return; 209 } 210 /* Map pages into kernel memory */ 211 if (bus_dmamem_map(dmat, &seg, rseg, LE_MEMSIZE, 212 &kvaddr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 213 printf(": can't map DMA area\n"); 214 bus_dmamem_free(dmat, &seg, rseg); 215 return; 216 } 217 /* Build DMA map so we can get physical address */ 218 if (bus_dmamap_create(dmat, LE_MEMSIZE, 1, LE_MEMSIZE, 219 0, BUS_DMA_NOWAIT, &lesc->sc_dmamap)) { 220 printf(": can't create DMA map\n"); 221 goto bad; 222 } 223 if (bus_dmamap_load(dmat, lesc->sc_dmamap, kvaddr, LE_MEMSIZE, 224 NULL, BUS_DMA_NOWAIT)) { 225 printf(": can't load DMA map\n"); 226 goto bad; 227 } 228 229 sc->sc_memsize = LE_MEMSIZE; /* 16K Buffer space*/ 230 sc->sc_mem = (void *) MIPS_PHYS_TO_KSEG1(kvaddr); 231 sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr; 232 233 sc->sc_conf3 = LE_C3_BSWP; 234 235 /* Copy Ethernet hardware address from NVRAM */ 236 for (i=0; i < 6; i++) 237 sc->sc_enaddr[i] = id[i*4+3]; /* XXX */ 238 239 sc->sc_copytodesc = lance_copytobuf_contig; 240 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 241 sc->sc_copytobuf = lance_copytobuf_contig; 242 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 243 sc->sc_zerobuf = lance_zerobuf_contig; 244 245 sc->sc_rdcsr = lerdcsr; 246 sc->sc_wrcsr = lewrcsr; 247 sc->sc_hwinit = NULL; 248 249 evcnt_attach_dynamic(&lesc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 250 self->dv_xname, "intr"); 251 bus_intr_establish(lesc->sc_bustag, SYS_INTR_ETHER, 0, 0, 252 le_intr, lesc); 253 254 am7990_config(&lesc->sc_am7990); 255 return; 256 257 bad: 258 bus_dmamem_unmap(dmat, kvaddr, LE_MEMSIZE); 259 bus_dmamem_free(dmat, &seg, rseg); 260 } 261 262 int 263 le_intr(arg) 264 void *arg; 265 { 266 struct le_softc *lesc = arg; 267 268 lesc->sc_intrcnt.ev_count++; 269 return am7990_intr(&lesc->sc_am7990); 270 } 271
Indexes created Mon Sep 29 21:09:56 GMT 2025