if_le_obio.c revision 1.23
1 /* $NetBSD: if_le_obio.c,v 1.23 2005/11/16 01:09:49 uwe 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 1.23 2005/11/16 01:09:49 uwe Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 47 #include <uvm/uvm_extern.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 /* 79 * Media types supported. 80 */ 81 static int lemedia[] = { 82 IFM_ETHER|IFM_10_T, 83 }; 84 #define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0])) 85 86 static int lematch_obio(struct device *, struct cfdata *, void *); 87 static void leattach_obio(struct device *, struct device *, void *); 88 89 CFATTACH_DECL(le_obio, sizeof(struct le_softc), 90 lematch_obio, leattach_obio, NULL, NULL); 91 92 93 static void lewrcsr(struct lance_softc *, uint16_t, uint16_t); 94 static uint16_t lerdcsr(struct lance_softc *, uint16_t); 95 96 static void 97 lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 98 { 99 struct le_softc *lesc = (struct le_softc *)sc; 100 bus_space_tag_t t = lesc->sc_bustag; 101 bus_space_handle_t h = lesc->sc_reg; 102 103 bus_space_write_2(t, h, LEREG1_RAP, port); 104 bus_space_write_2(t, h, LEREG1_RDP, val); 105 } 106 107 static uint16_t 108 lerdcsr(struct lance_softc *sc, uint16_t port) 109 { 110 struct le_softc *lesc = (struct le_softc *)sc; 111 bus_space_tag_t t = lesc->sc_bustag; 112 bus_space_handle_t h = lesc->sc_reg; 113 114 bus_space_write_2(t, h, LEREG1_RAP, port); 115 return (bus_space_read_2(t, h, LEREG1_RDP)); 116 } 117 118 static int 119 lematch_obio(struct device *parent, struct cfdata *cf, void *aux) 120 { 121 union obio_attach_args *uoba = aux; 122 struct obio4_attach_args *oba; 123 124 if (uoba->uoba_isobio4 == 0) 125 return (0); 126 127 oba = &uoba->uoba_oba4; 128 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 129 2, /* probe size */ 130 0, /* offset */ 131 0, /* flags */ 132 NULL, NULL)); 133 } 134 135 static void 136 leattach_obio(struct device *parent, struct device *self, void *aux) 137 { 138 union obio_attach_args *uoba = aux; 139 struct obio4_attach_args *oba = &uoba->uoba_oba4; 140 struct le_softc *lesc = (struct le_softc *)self; 141 struct lance_softc *sc = &lesc->sc_am7990.lsc; 142 bus_dma_segment_t seg; 143 bus_dma_tag_t dmatag; 144 int rseg; 145 int error; 146 147 lesc->sc_bustag = oba->oba_bustag; 148 lesc->sc_dmatag = dmatag = oba->oba_dmatag; 149 150 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 151 2 * sizeof(uint16_t), 152 0, &lesc->sc_reg) != 0) { 153 printf("%s @ obio: cannot map registers\n", self->dv_xname); 154 return; 155 } 156 157 /* Get a DMA handle */ 158 if ((error = bus_dmamap_create(dmatag, MEMSIZE, 1, MEMSIZE, 0, 159 BUS_DMA_NOWAIT|BUS_DMA_24BIT, 160 &lesc->sc_dmamap)) != 0) { 161 printf("%s: DMA map create error %d\n", 162 self->dv_xname, error); 163 return; 164 } 165 166 /* Allocate DMA buffer */ 167 if ((error = bus_dmamem_alloc(dmatag, MEMSIZE, PAGE_SIZE, 0, 168 &seg, 1, &rseg, 169 BUS_DMA_NOWAIT | BUS_DMA_24BIT)) != 0) { 170 printf("%s: DMA memory allocation error %d\n", 171 self->dv_xname, error); 172 return; 173 } 174 /* Map DMA buffer into kernel space */ 175 if ((error = bus_dmamem_map(dmatag, &seg, rseg, MEMSIZE, 176 (caddr_t *)&sc->sc_mem, 177 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 178 printf("%s: DMA memory map error %d\n", self->dv_xname, error); 179 bus_dmamem_free(lesc->sc_dmatag, &seg, rseg); 180 return; 181 } 182 /* Load DMA buffer */ 183 if ((error = bus_dmamap_load(dmatag, lesc->sc_dmamap, 184 sc->sc_mem, MEMSIZE, NULL, 185 BUS_DMA_NOWAIT)) != 0) { 186 printf("%s: DMA buffer map load error %d\n", 187 self->dv_xname, error); 188 bus_dmamem_unmap(dmatag, (caddr_t)sc->sc_mem, MEMSIZE); 189 bus_dmamem_free(dmatag, &seg, rseg); 190 return; 191 } 192 193 sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr & 0xffffff; 194 sc->sc_memsize = MEMSIZE; 195 sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON; 196 197 sc->sc_supmedia = lemedia; 198 sc->sc_nsupmedia = NLEMEDIA; 199 sc->sc_defaultmedia = lemedia[0]; 200 201 prom_getether(0, sc->sc_enaddr); 202 203 sc->sc_copytodesc = lance_copytobuf_contig; 204 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 205 sc->sc_copytobuf = lance_copytobuf_contig; 206 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 207 sc->sc_zerobuf = lance_zerobuf_contig; 208 209 sc->sc_rdcsr = lerdcsr; 210 sc->sc_wrcsr = lewrcsr; 211 212 am7990_config(&lesc->sc_am7990); 213 214 /* Install interrupt */ 215 (void)bus_intr_establish(lesc->sc_bustag, oba->oba_pri, IPL_NET, 216 am7990_intr, sc); 217 } 218
Indexes created Wed Sep 24 15:09:51 GMT 2025