if_le.c revision 1.10.40.1
1 /* $NetBSD: if_le.c,v 1.10.40.1 2008/06/02 13:22:25 mjf 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: if_le.c,v 1.10.40.1 2008/06/02 13:22:25 mjf Exp $"); 34 35 #include "opt_inet.h" 36 #include "bpfilter.h" 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/mbuf.h> 41 #include <sys/syslog.h> 42 #include <sys/socket.h> 43 #include <sys/device.h> 44 45 #include <net/if.h> 46 #include <net/if_ether.h> 47 #include <net/if_media.h> 48 49 #ifdef INET 50 #include <netinet/in.h> 51 #include <netinet/if_inarp.h> 52 #endif 53 54 #include <machine/cpu.h> 55 #include <machine/mainboard.h> 56 #include <machine/autoconf.h> 57 #include <machine/bus.h> 58 59 #include <dev/ic/lancereg.h> 60 #include <dev/ic/lancevar.h> 61 #include <dev/ic/am7990reg.h> 62 #include <dev/ic/am7990var.h> 63 64 /* 65 * LANCE registers. 66 */ 67 68 #define LEREG1_RDP 2 /* Offset to LANCE data register */ 69 #define LEREG1_RAP 6 /* Offset to LANCE address register */ 70 71 /* 72 * Ethernet software status per interface. 73 * The real stuff is in dev/ic/am7990var.h 74 */ 75 struct le_softc { 76 struct am7990_softc sc_am7990; /* glue to MI code */ 77 bus_space_tag_t sc_bustag; 78 bus_dma_tag_t sc_dmatag; 79 bus_space_handle_t sc_reg; /* LANCE registers */ 80 bus_dmamap_t sc_dmamap; 81 struct evcnt sc_intrcnt; /* Interrupt event counter */ 82 }; 83 84 static int le_match(device_t, cfdata_t, void *); 85 static void le_attach(device_t, device_t, void *); 86 87 CFATTACH_DECL_NEW(le, sizeof(struct le_softc), 88 le_match, le_attach, NULL, NULL); 89 90 static int le_attached; 91 92 #if defined(_KERNEL_OPT) 93 #include "opt_ddb.h" 94 #endif 95 96 #ifdef DDB 97 #define integrate 98 #define hide 99 #else 100 #define integrate static inline 101 #define hide static 102 #endif 103 104 int le_intr(void *); 105 106 hide void lewrcsr(struct lance_softc *, uint16_t, uint16_t); 107 hide uint16_t lerdcsr(struct lance_softc *, uint16_t); 108 109 hide void 110 lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 111 { 112 struct le_softc *lesc = (struct le_softc *)sc; 113 114 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 115 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val); 116 } 117 118 hide uint16_t 119 lerdcsr(struct lance_softc *sc, uint16_t port) 120 { 121 struct le_softc *lesc = (struct le_softc *)sc; 122 123 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 124 return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP)); 125 } 126 127 int 128 le_match(device_t parent, cfdata_t cf, void *aux) 129 { 130 struct confargs *ca = aux; 131 int addr; 132 133 if (strcmp(ca->ca_name, "le")) 134 return 0; 135 136 if (le_attached) 137 return 0; 138 139 addr = LANCE_PORT; 140 if (badaddr((void *)addr, 1)) 141 return 0; 142 143 return 1; 144 } 145 146 #define LE_MEMSIZE (32*1024) 147 148 void 149 le_attach(device_t parent, device_t self, void *aux) 150 { 151 struct le_softc *lesc = device_private(self); 152 struct lance_softc *sc = &lesc->sc_am7990.lsc; 153 struct confargs *ca = aux; 154 155 bus_dma_tag_t dmat; 156 bus_dma_segment_t seg; 157 int rseg; 158 uint8_t *id; 159 int i; 160 void *kvaddr; 161 162 sc->sc_dev = self; 163 id = (uint8_t *)ETHER_ID; 164 lesc->sc_bustag = ca->ca_bustag; 165 dmat = lesc->sc_dmatag = ca->ca_dmatag; 166 167 if (bus_space_map(ca->ca_bustag, ca->ca_addr, 168 8, /* size */ 169 BUS_SPACE_MAP_LINEAR, 170 &lesc->sc_reg) != 0) { 171 aprint_error(": cannot map registers\n"); 172 return; 173 } 174 175 /* 176 * Allocate a physically contiguous DMA area for the chip. 177 */ 178 if (bus_dmamem_alloc(dmat, LE_MEMSIZE, 0, 0, &seg, 1, 179 &rseg, BUS_DMA_NOWAIT)) { 180 aprint_error(": can't allocate DMA area\n"); 181 return; 182 } 183 /* Map pages into kernel memory */ 184 if (bus_dmamem_map(dmat, &seg, rseg, LE_MEMSIZE, 185 &kvaddr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 186 aprint_error(": can't map DMA area\n"); 187 bus_dmamem_free(dmat, &seg, rseg); 188 return; 189 } 190 /* Build DMA map so we can get physical address */ 191 if (bus_dmamap_create(dmat, LE_MEMSIZE, 1, LE_MEMSIZE, 192 0, BUS_DMA_NOWAIT, &lesc->sc_dmamap)) { 193 aprint_error(": can't create DMA map\n"); 194 goto bad; 195 } 196 if (bus_dmamap_load(dmat, lesc->sc_dmamap, kvaddr, LE_MEMSIZE, 197 NULL, BUS_DMA_NOWAIT)) { 198 aprint_error(": can't load DMA map\n"); 199 goto bad; 200 } 201 202 sc->sc_memsize = LE_MEMSIZE; /* 16K Buffer space*/ 203 sc->sc_mem = (void *)MIPS_PHYS_TO_KSEG1(kvaddr); 204 sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr; 205 206 sc->sc_conf3 = LE_C3_BSWP; 207 208 /* Copy Ethernet hardware address from NVRAM */ 209 for (i = 0; i < ETHER_ADDR_LEN; i++) 210 sc->sc_enaddr[i] = id[i * 4 + 3]; /* XXX */ 211 212 sc->sc_copytodesc = lance_copytobuf_contig; 213 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 214 sc->sc_copytobuf = lance_copytobuf_contig; 215 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 216 sc->sc_zerobuf = lance_zerobuf_contig; 217 218 sc->sc_rdcsr = lerdcsr; 219 sc->sc_wrcsr = lewrcsr; 220 sc->sc_hwinit = NULL; 221 222 evcnt_attach_dynamic(&lesc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 223 device_xname(self), "intr"); 224 bus_intr_establish(lesc->sc_bustag, SYS_INTR_ETHER, 0, 0, 225 le_intr, lesc); 226 227 am7990_config(&lesc->sc_am7990); 228 return; 229 230 bad: 231 bus_dmamem_unmap(dmat, kvaddr, LE_MEMSIZE); 232 bus_dmamem_free(dmat, &seg, rseg); 233 } 234 235 int 236 le_intr(void *arg) 237 { 238 struct le_softc *lesc = arg; 239 240 lesc->sc_intrcnt.ev_count++; 241 return am7990_intr(&lesc->sc_am7990); 242 } 243
Indexes created Mon Oct 20 11:09:49 GMT 2025