if_le_obio.c revision 1.21
1 /* $NetBSD: if_le_obio.c,v 1.21 2004/03/15 23:51:12 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 <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: if_le_obio.c,v 1.21 2004/03/15 23:51:12 pk Exp $"); 42 43 #include "opt_inet.h" 44 #include "bpfilter.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/device.h> 49 #include <sys/malloc.h> 50 #include <sys/socket.h> 51 52 #include <uvm/uvm_extern.h> 53 54 #include <net/if.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 58 #include <machine/bus.h> 59 #include <machine/intr.h> 60 #include <machine/autoconf.h> 61 62 #include <dev/ic/lancereg.h> 63 #include <dev/ic/lancevar.h> 64 #include <dev/ic/am7990reg.h> 65 #include <dev/ic/am7990var.h> 66 67 /* 68 * LANCE registers. 69 */ 70 #define LEREG1_RDP 0 /* Register Data port */ 71 #define LEREG1_RAP 2 /* Register Address port */ 72 73 struct le_softc { 74 struct am7990_softc sc_am7990; /* glue to MI code */ 75 bus_space_tag_t sc_bustag; 76 bus_dma_tag_t sc_dmatag; 77 bus_dmamap_t sc_dmamap; 78 bus_space_handle_t sc_reg; /* LANCE registers */ 79 }; 80 81 #define MEMSIZE 0x4000 /* LANCE memory size */ 82 83 int lematch_obio __P((struct device *, struct cfdata *, void *)); 84 void leattach_obio __P((struct device *, struct device *, void *)); 85 86 /* 87 * Media types supported. 88 */ 89 static int lemedia[] = { 90 IFM_ETHER|IFM_10_T, 91 }; 92 #define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0])) 93 94 CFATTACH_DECL(le_obio, sizeof(struct le_softc), 95 lematch_obio, leattach_obio, NULL, NULL); 96 97 extern struct cfdriver le_cd; 98 99 #if defined(_KERNEL_OPT) 100 #include "opt_ddb.h" 101 #endif 102 103 static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t)); 104 static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t)); 105 106 static void 107 lewrcsr(sc, port, val) 108 struct lance_softc *sc; 109 u_int16_t port, val; 110 { 111 struct le_softc *lesc = (struct le_softc *)sc; 112 bus_space_tag_t t = lesc->sc_bustag; 113 bus_space_handle_t h = lesc->sc_reg; 114 115 bus_space_write_2(t, h, LEREG1_RAP, port); 116 bus_space_write_2(t, h, LEREG1_RDP, val); 117 } 118 119 static u_int16_t 120 lerdcsr(sc, port) 121 struct lance_softc *sc; 122 u_int16_t port; 123 { 124 struct le_softc *lesc = (struct le_softc *)sc; 125 bus_space_tag_t t = lesc->sc_bustag; 126 bus_space_handle_t h = lesc->sc_reg; 127 128 bus_space_write_2(t, h, LEREG1_RAP, port); 129 return (bus_space_read_2(t, h, 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; 165 166 lesc->sc_bustag = oba->oba_bustag; 167 lesc->sc_dmatag = dmatag = oba->oba_dmatag; 168 169 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 170 2 * sizeof(u_int16_t), 171 0, &lesc->sc_reg) != 0) { 172 printf("%s @ obio: cannot map registers\n", self->dv_xname); 173 return; 174 } 175 176 /* Get a DMA handle */ 177 if ((error = bus_dmamap_create(dmatag, MEMSIZE, 1, MEMSIZE, 0, 178 BUS_DMA_NOWAIT|BUS_DMA_24BIT, 179 &lesc->sc_dmamap)) != 0) { 180 printf("%s: DMA map create error %d\n", 181 self->dv_xname, error); 182 return; 183 } 184 185 /* Allocate DMA buffer */ 186 if ((error = bus_dmamem_alloc(dmatag, MEMSIZE, PAGE_SIZE, 0, 187 &seg, 1, &rseg, 188 BUS_DMA_NOWAIT | BUS_DMA_24BIT)) != 0) { 189 printf("%s: DMA memory allocation error %d\n", 190 self->dv_xname, error); 191 return; 192 } 193 /* Map DMA buffer into kernel space */ 194 if ((error = bus_dmamem_map(dmatag, &seg, rseg, MEMSIZE, 195 (caddr_t *)&sc->sc_mem, 196 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 197 printf("%s: DMA memory map error %d\n", self->dv_xname, error); 198 bus_dmamem_free(lesc->sc_dmatag, &seg, rseg); 199 return; 200 } 201 /* Load DMA buffer */ 202 if ((error = bus_dmamap_load(dmatag, lesc->sc_dmamap, 203 sc->sc_mem, MEMSIZE, NULL, 204 BUS_DMA_NOWAIT)) != 0) { 205 printf("%s: DMA buffer map load error %d\n", 206 self->dv_xname, error); 207 bus_dmamem_unmap(dmatag, (caddr_t)sc->sc_mem, MEMSIZE); 208 bus_dmamem_free(dmatag, &seg, rseg); 209 return; 210 } 211 212 sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr & 0xffffff; 213 sc->sc_memsize = MEMSIZE; 214 sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON; 215 216 sc->sc_supmedia = lemedia; 217 sc->sc_nsupmedia = NLEMEDIA; 218 sc->sc_defaultmedia = lemedia[0]; 219 220 prom_getether(0, sc->sc_enaddr); 221 222 sc->sc_copytodesc = lance_copytobuf_contig; 223 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 224 sc->sc_copytobuf = lance_copytobuf_contig; 225 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 226 sc->sc_zerobuf = lance_zerobuf_contig; 227 228 sc->sc_rdcsr = lerdcsr; 229 sc->sc_wrcsr = lewrcsr; 230 231 am7990_config(&lesc->sc_am7990); 232 233 /* Install interrupt */ 234 (void)bus_intr_establish(lesc->sc_bustag, oba->oba_pri, IPL_NET, 235 am7990_intr, sc); 236 } 237
Indexes created Thu Sep 25 16:09:42 GMT 2025