1 /* $NetBSD: if_le_obio.c,v 1.25 2008/04/04 12:25:06 tsutsui 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 1.25 2008/04/04 12:25:06 tsutsui 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(device_t, cfdata_t, void *); 87 static void leattach_obio(device_t, device_t, void *); 88 89 CFATTACH_DECL_NEW(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(device_t parent, cfdata_t 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(device_t parent, device_t 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 = device_private(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 sc->sc_dev = self; 148 lesc->sc_bustag = oba->oba_bustag; 149 lesc->sc_dmatag = dmatag = oba->oba_dmatag; 150 151 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 152 2 * sizeof(uint16_t), 153 0, &lesc->sc_reg) != 0) { 154 aprint_error(": cannot map registers\n"); 155 return; 156 } 157 158 /* Get a DMA handle */ 159 if ((error = bus_dmamap_create(dmatag, MEMSIZE, 1, MEMSIZE, 0, 160 BUS_DMA_NOWAIT|BUS_DMA_24BIT, 161 &lesc->sc_dmamap)) != 0) { 162 aprint_error(": DMA map create error %d\n", 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 aprint_error(": DMA memory allocation error %d\n", error); 171 return; 172 } 173 /* Map DMA buffer into kernel space */ 174 if ((error = bus_dmamem_map(dmatag, &seg, rseg, MEMSIZE, 175 (void **)&sc->sc_mem, 176 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 177 aprint_error(": DMA memory map error %d\n", error); 178 bus_dmamem_free(lesc->sc_dmatag, &seg, rseg); 179 return; 180 } 181 /* Load DMA buffer */ 182 if ((error = bus_dmamap_load(dmatag, lesc->sc_dmamap, 183 sc->sc_mem, MEMSIZE, NULL, 184 BUS_DMA_NOWAIT)) != 0) { 185 aprint_error(": DMA buffer map load error %d\n", error); 186 bus_dmamem_unmap(dmatag, (void *)sc->sc_mem, MEMSIZE); 187 bus_dmamem_free(dmatag, &seg, rseg); 188 return; 189 } 190 191 sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr & 0xffffff; 192 sc->sc_memsize = MEMSIZE; 193 sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON; 194 195 sc->sc_supmedia = lemedia; 196 sc->sc_nsupmedia = NLEMEDIA; 197 sc->sc_defaultmedia = lemedia[0]; 198 199 prom_getether(0, sc->sc_enaddr); 200 201 sc->sc_copytodesc = lance_copytobuf_contig; 202 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 203 sc->sc_copytobuf = lance_copytobuf_contig; 204 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 205 sc->sc_zerobuf = lance_zerobuf_contig; 206 207 sc->sc_rdcsr = lerdcsr; 208 sc->sc_wrcsr = lewrcsr; 209 210 am7990_config(&lesc->sc_am7990); 211 212 /* Install interrupt */ 213 (void)bus_intr_establish(lesc->sc_bustag, oba->oba_pri, IPL_NET, 214 am7990_intr, sc); 215 } 216