1 /* $NetBSD: if_le_lebuffer.c,v 1.30 2022/09/25 18:03:04 thorpej 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_lebuffer.c,v 1.30 2022/09/25 18:03:04 thorpej Exp $"); 35 36 #include "opt_inet.h" 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/mbuf.h> 41 #include <sys/syslog.h> 42 #include <sys/socket.h> 43 #include <sys/device.h> 44 45 #include <net/if.h> 46 #include <net/if_ether.h> 47 #include <net/if_media.h> 48 49 #ifdef INET 50 #include <netinet/in.h> 51 #include <netinet/if_inarp.h> 52 #endif 53 54 #include <sys/bus.h> 55 #include <sys/intr.h> 56 #include <machine/autoconf.h> 57 58 #include <dev/sbus/sbusvar.h> 59 #include <dev/sbus/lebuffervar.h> 60 61 #include <dev/ic/lancereg.h> 62 #include <dev/ic/lancevar.h> 63 #include <dev/ic/am7990reg.h> 64 #include <dev/ic/am7990var.h> 65 66 #include "ioconf.h" 67 68 /* 69 * LANCE registers. 70 */ 71 #define LEREG1_RDP 0 /* Register Data port */ 72 #define LEREG1_RAP 2 /* Register Address port */ 73 74 struct le_softc { 75 struct am7990_softc sc_am7990; /* glue to MI code */ 76 bus_space_tag_t sc_bustag; 77 bus_dma_tag_t sc_dmatag; 78 bus_space_handle_t sc_reg; /* LANCE registers */ 79 }; 80 81 82 int lematch_lebuffer(device_t, cfdata_t, void *); 83 void leattach_lebuffer(device_t, device_t, void *); 84 85 /* 86 * Media types supported. 87 */ 88 static int lemedia[] = { 89 IFM_ETHER | IFM_10_T, 90 }; 91 #define NLEMEDIA __arraycount(lemedia) 92 93 CFATTACH_DECL_NEW(le_lebuffer, sizeof(struct le_softc), 94 lematch_lebuffer, leattach_lebuffer, NULL, NULL); 95 96 #if defined(_KERNEL_OPT) 97 #include "opt_ddb.h" 98 #endif 99 100 static void lewrcsr(struct lance_softc *, uint16_t, uint16_t); 101 static uint16_t lerdcsr(struct lance_softc *, uint16_t); 102 103 static void 104 lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 105 { 106 struct le_softc *lesc = (struct le_softc *)sc; 107 bus_space_tag_t t = lesc->sc_bustag; 108 bus_space_handle_t h = lesc->sc_reg; 109 110 bus_space_write_2(t, h, LEREG1_RAP, port); 111 bus_space_write_2(t, h, LEREG1_RDP, val); 112 113 #if defined(SUN4M) 114 /* 115 * We need to flush the Sbus->Mbus write buffers. This can most 116 * easily be accomplished by reading back the register that we 117 * just wrote (thanks to Chris Torek for this solution). 118 */ 119 (void)bus_space_read_2(t, h, LEREG1_RDP); 120 #endif 121 } 122 123 static uint16_t 124 lerdcsr(struct lance_softc *sc, uint16_t port) 125 { 126 struct le_softc *lesc = (struct le_softc *)sc; 127 bus_space_tag_t t = lesc->sc_bustag; 128 bus_space_handle_t h = lesc->sc_reg; 129 130 bus_space_write_2(t, h, LEREG1_RAP, port); 131 return (bus_space_read_2(t, h, LEREG1_RDP)); 132 } 133 134 int 135 lematch_lebuffer(device_t parent, cfdata_t cf, void *aux) 136 { 137 struct sbus_attach_args *sa = aux; 138 139 return (strcmp(cf->cf_name, sa->sa_name) == 0); 140 } 141 142 143 void 144 leattach_lebuffer(device_t parent, device_t self, void *aux) 145 { 146 struct le_softc *lesc = device_private(self); 147 struct lance_softc *sc = &lesc->sc_am7990.lsc; 148 struct lebuf_softc *lebuf = device_private(parent); 149 struct sbus_attach_args *sa = aux; 150 151 sc->sc_dev = self; 152 lesc->sc_bustag = sa->sa_bustag; 153 lesc->sc_dmatag = sa->sa_dmatag; 154 155 if (sbus_bus_map(sa->sa_bustag, 156 sa->sa_slot, 157 sa->sa_offset, 158 sa->sa_size, 159 0, &lesc->sc_reg)) { 160 aprint_error(": cannot map registers\n"); 161 return; 162 } 163 164 sc->sc_mem = lebuf->sc_buffer; 165 sc->sc_memsize = lebuf->sc_bufsiz; 166 sc->sc_addr = 0; /* Lance view is offset by buffer location */ 167 lebuf->attached = 1; 168 169 /* That old black magic... */ 170 sc->sc_conf3 = prom_getpropint(sa->sa_node, "busmaster-regval", 171 LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON); 172 173 sc->sc_supmedia = lemedia; 174 sc->sc_nsupmedia = NLEMEDIA; 175 sc->sc_defaultmedia = lemedia[0]; 176 177 prom_getether(sa->sa_node, sc->sc_enaddr); 178 179 sc->sc_copytodesc = lance_copytobuf_contig; 180 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 181 sc->sc_copytobuf = lance_copytobuf_contig; 182 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 183 sc->sc_zerobuf = lance_zerobuf_contig; 184 185 sc->sc_rdcsr = lerdcsr; 186 sc->sc_wrcsr = lewrcsr; 187 188 am7990_config(&lesc->sc_am7990); 189 190 /* Establish interrupt handler */ 191 if (sa->sa_nintr != 0) 192 (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 193 IPL_NET, am7990_intr, sc); 194 } 195
Indexes created Sun Sep 21 20:09:37 GMT 2025