if_le.c revision 1.5
1 /* $NetBSD: if_le.c,v 1.5 2002/10/02 05:38:10 thorpej 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 CFATTACH_DECL(le, sizeof(struct le_softc), 92 le_match, le_attach, NULL, NULL); 93 94 #if defined(_KERNEL_OPT) 95 #include "opt_ddb.h" 96 #endif 97 98 #ifdef DDB 99 #define integrate 100 #define hide 101 #else 102 #define integrate static __inline 103 #define hide static 104 #endif 105 106 int le_intr __P((void *)); 107 108 hide void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t)); 109 hide u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t)); 110 111 hide void 112 lewrcsr(sc, port, val) 113 struct lance_softc *sc; 114 u_int16_t port, val; 115 { 116 struct le_softc *lesc = (struct le_softc *)sc; 117 118 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 119 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val); 120 } 121 122 hide u_int16_t 123 lerdcsr(sc, port) 124 struct lance_softc *sc; 125 u_int16_t port; 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 return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP)); 131 } 132 133 int 134 le_match(parent, cf, aux) 135 struct device *parent; 136 struct cfdata *cf; 137 void *aux; 138 { 139 struct confargs *ca = aux; 140 int addr; 141 142 if (strcmp(ca->ca_name, "le")) 143 return 0; 144 145 switch(cf->cf_unit) { 146 147 case 0: 148 addr = LANCE_PORT; 149 break; 150 default: 151 return 0; 152 } 153 154 if (badaddr((void *)addr, 1)) 155 return 0; 156 157 return 1; 158 } 159 160 #define LE_MEMSIZE (32*1024) 161 162 void 163 le_attach(parent, self, aux) 164 struct device *parent, *self; 165 void *aux; 166 { 167 struct le_softc *lesc = (struct le_softc *)self; 168 struct lance_softc *sc = &lesc->sc_am7990.lsc; 169 struct confargs *ca = aux; 170 171 bus_dma_tag_t dmat; 172 bus_dma_segment_t seg; 173 int rseg; 174 175 /*struct confargs *ca = aux;*/ 176 u_char *id; 177 int i; 178 caddr_t kvaddr; 179 180 switch (sc->sc_dev.dv_unit) { 181 case 0: 182 id = (u_char *)(ETHER_ID); 183 break; 184 default: 185 panic("le_attach"); 186 } 187 188 lesc->sc_bustag = ca->ca_bustag; 189 dmat = lesc->sc_dmatag = ca->ca_dmatag; 190 191 if (bus_space_map(ca->ca_bustag, ca->ca_addr, 192 8, /* size */ 193 BUS_SPACE_MAP_LINEAR, 194 &lesc->sc_reg) != 0) { 195 printf(": cannot map registers\n"); 196 return; 197 } 198 199 /* 200 * Allocate a physically contiguous DMA area for the chip. 201 */ 202 if (bus_dmamem_alloc(dmat, LE_MEMSIZE, 0, 0, &seg, 1, 203 &rseg, BUS_DMA_NOWAIT)) { 204 printf(": can't allocate DMA area\n"); 205 return; 206 } 207 /* Map pages into kernel memory */ 208 if (bus_dmamem_map(dmat, &seg, rseg, LE_MEMSIZE, 209 &kvaddr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 210 printf(": can't map DMA area\n"); 211 bus_dmamem_free(dmat, &seg, rseg); 212 return; 213 } 214 /* Build DMA map so we can get physical address */ 215 if (bus_dmamap_create(dmat, LE_MEMSIZE, 1, LE_MEMSIZE, 216 0, BUS_DMA_NOWAIT, &lesc->sc_dmamap)) { 217 printf(": can't create DMA map\n"); 218 goto bad; 219 } 220 if (bus_dmamap_load(dmat, lesc->sc_dmamap, kvaddr, LE_MEMSIZE, 221 NULL, BUS_DMA_NOWAIT)) { 222 printf(": can't load DMA map\n"); 223 goto bad; 224 } 225 226 sc->sc_memsize = LE_MEMSIZE; /* 16K Buffer space*/ 227 sc->sc_mem = (void *) MIPS_PHYS_TO_KSEG1(kvaddr); 228 sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr; 229 230 sc->sc_conf3 = LE_C3_BSWP; 231 232 /* Copy Ethernet hardware address from NVRAM */ 233 for (i=0; i < 6; i++) 234 sc->sc_enaddr[i] = id[i*4+3]; /* XXX */ 235 236 sc->sc_copytodesc = lance_copytobuf_contig; 237 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 238 sc->sc_copytobuf = lance_copytobuf_contig; 239 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 240 sc->sc_zerobuf = lance_zerobuf_contig; 241 242 sc->sc_rdcsr = lerdcsr; 243 sc->sc_wrcsr = lewrcsr; 244 sc->sc_hwinit = NULL; 245 246 evcnt_attach_dynamic(&lesc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 247 self->dv_xname, "intr"); 248 bus_intr_establish(lesc->sc_bustag, SYS_INTR_ETHER, 0, 0, 249 le_intr, lesc); 250 251 am7990_config(&lesc->sc_am7990); 252 return; 253 254 bad: 255 bus_dmamem_unmap(dmat, kvaddr, LE_MEMSIZE); 256 bus_dmamem_free(dmat, &seg, rseg); 257 } 258 259 int 260 le_intr(arg) 261 void *arg; 262 { 263 struct le_softc *lesc = arg; 264 265 lesc->sc_intrcnt.ev_count++; 266 return am7990_intr(&lesc->sc_am7990); 267 } 268
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