1 /* $NetBSD: if_le_obio.c,v 1.13 2002/03/11 16:27:02 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace 9 * Simulation Facility, NASA Ames Research Center; Paul Kranenburg. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #include "opt_inet.h" 41 #include "bpfilter.h" 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 #include <sys/malloc.h> 47 #include <sys/socket.h> 48 49 #include <net/if.h> 50 #include <net/if_ether.h> 51 #include <net/if_media.h> 52 53 #include <machine/bus.h> 54 #include <machine/intr.h> 55 #include <machine/autoconf.h> 56 57 #include <dev/ic/lancereg.h> 58 #include <dev/ic/lancevar.h> 59 #include <dev/ic/am7990reg.h> 60 #include <dev/ic/am7990var.h> 61 62 /* 63 * LANCE registers. 64 */ 65 #define LEREG1_RDP 0 /* Register Data port */ 66 #define LEREG1_RAP 2 /* Register Address port */ 67 68 struct le_softc { 69 struct am7990_softc sc_am7990; /* glue to MI code */ 70 bus_space_tag_t sc_bustag; 71 bus_dma_tag_t sc_dmatag; 72 bus_dmamap_t sc_dmamap; 73 bus_space_handle_t sc_reg; /* LANCE registers */ 74 }; 75 76 #define MEMSIZE 0x4000 /* LANCE memory size */ 77 78 int lematch_obio __P((struct device *, struct cfdata *, void *)); 79 void leattach_obio __P((struct device *, struct device *, void *)); 80 81 /* 82 * Media types supported. 83 */ 84 static int lemedia[] = { 85 IFM_ETHER|IFM_10_T, 86 }; 87 #define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0])) 88 89 struct cfattach le_obio_ca = { 90 sizeof(struct le_softc), lematch_obio, leattach_obio 91 }; 92 93 extern struct cfdriver le_cd; 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 static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t)); 108 static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t)); 109 110 static void 111 lewrcsr(sc, port, val) 112 struct lance_softc *sc; 113 u_int16_t port, val; 114 { 115 struct le_softc *lesc = (struct le_softc *)sc; 116 117 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 118 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val); 119 } 120 121 static u_int16_t 122 lerdcsr(sc, port) 123 struct lance_softc *sc; 124 u_int16_t port; 125 { 126 struct le_softc *lesc = (struct le_softc *)sc; 127 128 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 129 return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP)); 130 } 131 132 int 133 lematch_obio(parent, cf, aux) 134 struct device *parent; 135 struct cfdata *cf; 136 void *aux; 137 { 138 union obio_attach_args *uoba = aux; 139 struct obio4_attach_args *oba; 140 141 if (uoba->uoba_isobio4 == 0) 142 return (0); 143 144 oba = &uoba->uoba_oba4; 145 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 146 2, /* probe size */ 147 0, /* offset */ 148 0, /* flags */ 149 NULL, NULL)); 150 } 151 152 void 153 leattach_obio(parent, self, aux) 154 struct device *parent, *self; 155 void *aux; 156 { 157 union obio_attach_args *uoba = aux; 158 struct obio4_attach_args *oba = &uoba->uoba_oba4; 159 struct le_softc *lesc = (struct le_softc *)self; 160 struct lance_softc *sc = &lesc->sc_am7990.lsc; 161 bus_dma_segment_t seg; 162 bus_dma_tag_t dmatag; 163 int rseg; 164 int error; 165 /* XXX the following declarations should be elsewhere */ 166 extern void myetheraddr __P((u_char *)); 167 168 lesc->sc_bustag = oba->oba_bustag; 169 lesc->sc_dmatag = dmatag = oba->oba_dmatag; 170 171 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 172 2 * sizeof(u_int16_t), 173 0, &lesc->sc_reg) != 0) { 174 printf("%s @ obio: cannot map registers\n", self->dv_xname); 175 return; 176 } 177 178 /* Get a DMA handle */ 179 if ((error = bus_dmamap_create(dmatag, MEMSIZE, 1, MEMSIZE, 0, 180 BUS_DMA_NOWAIT|BUS_DMA_24BIT, 181 &lesc->sc_dmamap)) != 0) { 182 printf("%s: DMA map create error %d\n", 183 self->dv_xname, error); 184 return; 185 } 186 187 /* Allocate DMA buffer */ 188 if ((error = bus_dmamem_alloc(dmatag, MEMSIZE, NBPG, 0, 189 &seg, 1, &rseg, 190 BUS_DMA_NOWAIT | BUS_DMA_24BIT)) != 0) { 191 printf("%s: DMA memory allocation error %d\n", 192 self->dv_xname, error); 193 return; 194 } 195 /* Map DMA buffer into kernel space */ 196 if ((error = bus_dmamem_map(dmatag, &seg, rseg, MEMSIZE, 197 (caddr_t *)&sc->sc_mem, 198 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 199 printf("%s: DMA memory map error %d\n", self->dv_xname, error); 200 bus_dmamem_free(lesc->sc_dmatag, &seg, rseg); 201 return; 202 } 203 /* Load DMA buffer */ 204 if ((error = bus_dmamap_load(dmatag, lesc->sc_dmamap, 205 sc->sc_mem, MEMSIZE, NULL, 206 BUS_DMA_NOWAIT)) != 0) { 207 printf("%s: DMA buffer map load error %d\n", 208 self->dv_xname, error); 209 bus_dmamem_unmap(dmatag, (caddr_t)sc->sc_mem, MEMSIZE); 210 bus_dmamem_free(dmatag, &seg, rseg); 211 return; 212 } 213 214 sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr & 0xffffff; 215 sc->sc_memsize = MEMSIZE; 216 sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON; 217 218 sc->sc_supmedia = lemedia; 219 sc->sc_nsupmedia = NLEMEDIA; 220 sc->sc_defaultmedia = lemedia[0]; 221 222 myetheraddr(sc->sc_enaddr); 223 224 sc->sc_copytodesc = lance_copytobuf_contig; 225 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 226 sc->sc_copytobuf = lance_copytobuf_contig; 227 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 228 sc->sc_zerobuf = lance_zerobuf_contig; 229 230 sc->sc_rdcsr = lerdcsr; 231 sc->sc_wrcsr = lewrcsr; 232 233 am7990_config(&lesc->sc_am7990); 234 235 /* Install interrupt */ 236 (void)bus_intr_establish(lesc->sc_bustag, oba->oba_pri, IPL_NET, 0, 237 am7990_intr, sc); 238 } 239