if_le.c revision 1.11
1 /* $NetBSD: if_le.c,v 1.11 2008/04/04 12:25:06 tsutsui 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 1.11 2008/04/04 12:25:06 tsutsui 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(device_t, cfdata_t, void *); 92 static void le_attach(device_t, device_t, void *); 93 94 CFATTACH_DECL_NEW(le, sizeof(struct le_softc), 95 le_match, le_attach, NULL, NULL); 96 97 static int le_attached; 98 99 #if defined(_KERNEL_OPT) 100 #include "opt_ddb.h" 101 #endif 102 103 #ifdef DDB 104 #define integrate 105 #define hide 106 #else 107 #define integrate static inline 108 #define hide static 109 #endif 110 111 int le_intr(void *); 112 113 hide void lewrcsr(struct lance_softc *, uint16_t, uint16_t); 114 hide uint16_t lerdcsr(struct lance_softc *, uint16_t); 115 116 hide void 117 lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t 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 uint16_t 126 lerdcsr(struct lance_softc *sc, uint16_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(device_t parent, cfdata_t cf, void *aux) 136 { 137 struct confargs *ca = aux; 138 int addr; 139 140 if (strcmp(ca->ca_name, "le")) 141 return 0; 142 143 if (le_attached) 144 return 0; 145 146 addr = LANCE_PORT; 147 if (badaddr((void *)addr, 1)) 148 return 0; 149 150 return 1; 151 } 152 153 #define LE_MEMSIZE (32*1024) 154 155 void 156 le_attach(device_t parent, device_t self, void *aux) 157 { 158 struct le_softc *lesc = device_private(self); 159 struct lance_softc *sc = &lesc->sc_am7990.lsc; 160 struct confargs *ca = aux; 161 162 bus_dma_tag_t dmat; 163 bus_dma_segment_t seg; 164 int rseg; 165 uint8_t *id; 166 int i; 167 void *kvaddr; 168 169 sc->sc_dev = self; 170 id = (uint8_t *)ETHER_ID; 171 lesc->sc_bustag = ca->ca_bustag; 172 dmat = lesc->sc_dmatag = ca->ca_dmatag; 173 174 if (bus_space_map(ca->ca_bustag, ca->ca_addr, 175 8, /* size */ 176 BUS_SPACE_MAP_LINEAR, 177 &lesc->sc_reg) != 0) { 178 aprint_error(": cannot map registers\n"); 179 return; 180 } 181 182 /* 183 * Allocate a physically contiguous DMA area for the chip. 184 */ 185 if (bus_dmamem_alloc(dmat, LE_MEMSIZE, 0, 0, &seg, 1, 186 &rseg, BUS_DMA_NOWAIT)) { 187 aprint_error(": can't allocate DMA area\n"); 188 return; 189 } 190 /* Map pages into kernel memory */ 191 if (bus_dmamem_map(dmat, &seg, rseg, LE_MEMSIZE, 192 &kvaddr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 193 aprint_error(": can't map DMA area\n"); 194 bus_dmamem_free(dmat, &seg, rseg); 195 return; 196 } 197 /* Build DMA map so we can get physical address */ 198 if (bus_dmamap_create(dmat, LE_MEMSIZE, 1, LE_MEMSIZE, 199 0, BUS_DMA_NOWAIT, &lesc->sc_dmamap)) { 200 aprint_error(": can't create DMA map\n"); 201 goto bad; 202 } 203 if (bus_dmamap_load(dmat, lesc->sc_dmamap, kvaddr, LE_MEMSIZE, 204 NULL, BUS_DMA_NOWAIT)) { 205 aprint_error(": can't load DMA map\n"); 206 goto bad; 207 } 208 209 sc->sc_memsize = LE_MEMSIZE; /* 16K Buffer space*/ 210 sc->sc_mem = (void *)MIPS_PHYS_TO_KSEG1(kvaddr); 211 sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr; 212 213 sc->sc_conf3 = LE_C3_BSWP; 214 215 /* Copy Ethernet hardware address from NVRAM */ 216 for (i = 0; i < ETHER_ADDR_LEN; i++) 217 sc->sc_enaddr[i] = id[i * 4 + 3]; /* XXX */ 218 219 sc->sc_copytodesc = lance_copytobuf_contig; 220 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 221 sc->sc_copytobuf = lance_copytobuf_contig; 222 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 223 sc->sc_zerobuf = lance_zerobuf_contig; 224 225 sc->sc_rdcsr = lerdcsr; 226 sc->sc_wrcsr = lewrcsr; 227 sc->sc_hwinit = NULL; 228 229 evcnt_attach_dynamic(&lesc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 230 device_xname(self), "intr"); 231 bus_intr_establish(lesc->sc_bustag, SYS_INTR_ETHER, 0, 0, 232 le_intr, lesc); 233 234 am7990_config(&lesc->sc_am7990); 235 return; 236 237 bad: 238 bus_dmamem_unmap(dmat, kvaddr, LE_MEMSIZE); 239 bus_dmamem_free(dmat, &seg, rseg); 240 } 241 242 int 243 le_intr(void *arg) 244 { 245 struct le_softc *lesc = arg; 246 247 lesc->sc_intrcnt.ev_count++; 248 return am7990_intr(&lesc->sc_am7990); 249 } 250
Indexes created Mon Sep 29 21:09:56 GMT 2025