1 /* $NetBSD: if_le_obio.c,v 1.29 2022/05/29 10:45:05 rin 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: if_le_obio.c,v 1.29 2022/05/29 10:45:05 rin Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/device.h> 39 40 #include <uvm/uvm_extern.h> 41 42 #include <net/if.h> 43 #include <net/if_ether.h> 44 #include <net/if_media.h> 45 46 #include <sys/bus.h> 47 #include <machine/intr.h> 48 #include <machine/autoconf.h> 49 50 #include <dev/ic/lancereg.h> 51 #include <dev/ic/lancevar.h> 52 #include <dev/ic/am7990reg.h> 53 #include <dev/ic/am7990var.h> 54 55 /* 56 * LANCE registers. 57 */ 58 #define LEREG1_RDP 0 /* Register Data port */ 59 #define LEREG1_RAP 2 /* Register Address port */ 60 61 struct le_softc { 62 struct am7990_softc sc_am7990; /* glue to MI code */ 63 bus_space_tag_t sc_bustag; 64 bus_dma_tag_t sc_dmatag; 65 bus_dmamap_t sc_dmamap; 66 bus_space_handle_t sc_reg; /* LANCE registers */ 67 }; 68 69 #define MEMSIZE 0x4000 /* LANCE memory size */ 70 71 /* 72 * Media types supported. 73 */ 74 static int lemedia[] = { 75 IFM_ETHER | IFM_10_T, 76 }; 77 #define NLEMEDIA __arraycount(lemedia) 78 79 static int lematch_obio(device_t, cfdata_t, void *); 80 static void leattach_obio(device_t, device_t, void *); 81 82 CFATTACH_DECL_NEW(le_obio, sizeof(struct le_softc), 83 lematch_obio, leattach_obio, NULL, NULL); 84 85 86 static void lewrcsr(struct lance_softc *, uint16_t, uint16_t); 87 static uint16_t lerdcsr(struct lance_softc *, uint16_t); 88 89 static void 90 lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 91 { 92 struct le_softc *lesc = (struct le_softc *)sc; 93 bus_space_tag_t t = lesc->sc_bustag; 94 bus_space_handle_t h = lesc->sc_reg; 95 96 bus_space_write_2(t, h, LEREG1_RAP, port); 97 bus_space_write_2(t, h, LEREG1_RDP, val); 98 } 99 100 static uint16_t 101 lerdcsr(struct lance_softc *sc, uint16_t port) 102 { 103 struct le_softc *lesc = (struct le_softc *)sc; 104 bus_space_tag_t t = lesc->sc_bustag; 105 bus_space_handle_t h = lesc->sc_reg; 106 107 bus_space_write_2(t, h, LEREG1_RAP, port); 108 return bus_space_read_2(t, h, LEREG1_RDP); 109 } 110 111 static int 112 lematch_obio(device_t parent, cfdata_t cf, void *aux) 113 { 114 union obio_attach_args *uoba = aux; 115 struct obio4_attach_args *oba; 116 117 if (uoba->uoba_isobio4 == 0) 118 return 0; 119 120 oba = &uoba->uoba_oba4; 121 return bus_space_probe(oba->oba_bustag, oba->oba_paddr, 122 2, /* probe size */ 123 0, /* offset */ 124 0, /* flags */ 125 NULL, NULL); 126 } 127 128 static void 129 leattach_obio(device_t parent, device_t self, void *aux) 130 { 131 union obio_attach_args *uoba = aux; 132 struct obio4_attach_args *oba = &uoba->uoba_oba4; 133 struct le_softc *lesc = device_private(self); 134 struct lance_softc *sc = &lesc->sc_am7990.lsc; 135 bus_dma_segment_t seg; 136 bus_dma_tag_t dmatag; 137 int rseg; 138 int error; 139 140 sc->sc_dev = self; 141 lesc->sc_bustag = oba->oba_bustag; 142 lesc->sc_dmatag = dmatag = oba->oba_dmatag; 143 144 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 145 2 * sizeof(uint16_t), 0, &lesc->sc_reg) != 0) { 146 aprint_error(": cannot map registers\n"); 147 return; 148 } 149 150 /* Get a DMA handle */ 151 if ((error = bus_dmamap_create(dmatag, MEMSIZE, 1, MEMSIZE, 0, 152 BUS_DMA_NOWAIT|BUS_DMA_24BIT, &lesc->sc_dmamap)) != 0) { 153 aprint_error(": DMA map create error %d\n", error); 154 goto bad_bsunmap; 155 } 156 157 /* Allocate DMA buffer */ 158 if ((error = bus_dmamem_alloc(dmatag, MEMSIZE, PAGE_SIZE, 0, 159 &seg, 1, &rseg, BUS_DMA_NOWAIT | BUS_DMA_24BIT)) != 0) { 160 aprint_error(": DMA memory allocation error %d\n", error); 161 goto bad_destroy; 162 } 163 /* Map DMA buffer into kernel space */ 164 if ((error = bus_dmamem_map(dmatag, &seg, rseg, MEMSIZE, 165 (void **)&sc->sc_mem, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 166 aprint_error(": DMA memory map error %d\n", error); 167 goto bad_free; 168 } 169 /* Load DMA buffer */ 170 if ((error = bus_dmamap_load(dmatag, lesc->sc_dmamap, 171 sc->sc_mem, MEMSIZE, NULL, BUS_DMA_NOWAIT)) != 0) { 172 aprint_error(": DMA buffer map load error %d\n", error); 173 goto bad_unmap; 174 } 175 176 sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr & 0xffffff; 177 sc->sc_memsize = MEMSIZE; 178 sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON; 179 180 sc->sc_supmedia = lemedia; 181 sc->sc_nsupmedia = NLEMEDIA; 182 sc->sc_defaultmedia = lemedia[0]; 183 184 prom_getether(0, sc->sc_enaddr); 185 186 sc->sc_copytodesc = lance_copytobuf_contig; 187 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 188 sc->sc_copytobuf = lance_copytobuf_contig; 189 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 190 sc->sc_zerobuf = lance_zerobuf_contig; 191 192 sc->sc_rdcsr = lerdcsr; 193 sc->sc_wrcsr = lewrcsr; 194 195 am7990_config(&lesc->sc_am7990); 196 197 /* Install interrupt */ 198 (void)bus_intr_establish(lesc->sc_bustag, oba->oba_pri, IPL_NET, 199 am7990_intr, sc); 200 201 return; 202 203 bad_unmap: 204 bus_dmamem_unmap(dmatag, (void *)sc->sc_mem, MEMSIZE); 205 bad_free: 206 bus_dmamem_free(lesc->sc_dmatag, &seg, rseg); 207 bad_destroy: 208 bus_dmamap_destroy(dmatag, lesc->sc_dmamap); 209 bad_bsunmap: 210 bus_space_unmap(oba->oba_bustag, lesc->sc_reg, 2 * sizeof(uint16_t)); 211 } 212
Indexes created Sat Sep 20 22:09:52 GMT 2025