1 /* $NetBSD: if_le_lebuffer.c,v 1.28 2010/01/19 22:07:43 pooka 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 1.28 2010/01/19 22:07:43 pooka 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 #include <sys/malloc.h> 45 46 #include <net/if.h> 47 #include <net/if_ether.h> 48 #include <net/if_media.h> 49 50 #ifdef INET 51 #include <netinet/in.h> 52 #include <netinet/if_inarp.h> 53 #endif 54 55 #include <sys/bus.h> 56 #include <sys/intr.h> 57 #include <machine/autoconf.h> 58 59 #include <dev/sbus/sbusvar.h> 60 #include <dev/sbus/lebuffervar.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 #include "ioconf.h" 68 69 /* 70 * LANCE registers. 71 */ 72 #define LEREG1_RDP 0 /* Register Data port */ 73 #define LEREG1_RAP 2 /* Register Address port */ 74 75 struct le_softc { 76 struct am7990_softc sc_am7990; /* glue to MI code */ 77 bus_space_tag_t sc_bustag; 78 bus_dma_tag_t sc_dmatag; 79 bus_space_handle_t sc_reg; /* LANCE registers */ 80 }; 81 82 83 int lematch_lebuffer(device_t, cfdata_t, void *); 84 void leattach_lebuffer(device_t, device_t, void *); 85 86 /* 87 * Media types supported. 88 */ 89 static int lemedia[] = { 90 IFM_ETHER|IFM_10_T, 91 }; 92 #define NLEMEDIA __arraycount(lemedia) 93 94 CFATTACH_DECL_NEW(le_lebuffer, sizeof(struct le_softc), 95 lematch_lebuffer, leattach_lebuffer, NULL, NULL); 96 97 #if defined(_KERNEL_OPT) 98 #include "opt_ddb.h" 99 #endif 100 101 static void lewrcsr(struct lance_softc *, uint16_t, uint16_t); 102 static uint16_t lerdcsr(struct lance_softc *, uint16_t); 103 104 static void 105 lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 106 { 107 struct le_softc *lesc = (struct le_softc *)sc; 108 bus_space_tag_t t = lesc->sc_bustag; 109 bus_space_handle_t h = lesc->sc_reg; 110 111 bus_space_write_2(t, h, LEREG1_RAP, port); 112 bus_space_write_2(t, h, LEREG1_RDP, val); 113 114 #if defined(SUN4M) 115 /* 116 * We need to flush the Sbus->Mbus write buffers. This can most 117 * easily be accomplished by reading back the register that we 118 * just wrote (thanks to Chris Torek for this solution). 119 */ 120 (void)bus_space_read_2(t, h, LEREG1_RDP); 121 #endif 122 } 123 124 static uint16_t 125 lerdcsr(struct lance_softc *sc, uint16_t port) 126 { 127 struct le_softc *lesc = (struct le_softc *)sc; 128 bus_space_tag_t t = lesc->sc_bustag; 129 bus_space_handle_t h = lesc->sc_reg; 130 131 bus_space_write_2(t, h, LEREG1_RAP, port); 132 return (bus_space_read_2(t, h, LEREG1_RDP)); 133 } 134 135 int 136 lematch_lebuffer(device_t parent, cfdata_t cf, void *aux) 137 { 138 struct sbus_attach_args *sa = aux; 139 140 return (strcmp(cf->cf_name, sa->sa_name) == 0); 141 } 142 143 144 void 145 leattach_lebuffer(device_t parent, device_t self, void *aux) 146 { 147 struct le_softc *lesc = device_private(self); 148 struct lance_softc *sc = &lesc->sc_am7990.lsc; 149 struct lebuf_softc *lebuf = device_private(parent); 150 struct sbus_attach_args *sa = aux; 151 152 sc->sc_dev = self; 153 lesc->sc_bustag = sa->sa_bustag; 154 lesc->sc_dmatag = sa->sa_dmatag; 155 156 if (sbus_bus_map(sa->sa_bustag, 157 sa->sa_slot, 158 sa->sa_offset, 159 sa->sa_size, 160 0, &lesc->sc_reg)) { 161 aprint_error(": cannot map registers\n"); 162 return; 163 } 164 165 sc->sc_mem = lebuf->sc_buffer; 166 sc->sc_memsize = lebuf->sc_bufsiz; 167 sc->sc_addr = 0; /* Lance view is offset by buffer location */ 168 lebuf->attached = 1; 169 170 /* That old black magic... */ 171 sc->sc_conf3 = prom_getpropint(sa->sa_node, "busmaster-regval", 172 LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON); 173 174 sc->sc_supmedia = lemedia; 175 sc->sc_nsupmedia = NLEMEDIA; 176 sc->sc_defaultmedia = lemedia[0]; 177 178 prom_getether(sa->sa_node, sc->sc_enaddr); 179 180 sc->sc_copytodesc = lance_copytobuf_contig; 181 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 182 sc->sc_copytobuf = lance_copytobuf_contig; 183 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 184 sc->sc_zerobuf = lance_zerobuf_contig; 185 186 sc->sc_rdcsr = lerdcsr; 187 sc->sc_wrcsr = lewrcsr; 188 189 am7990_config(&lesc->sc_am7990); 190 191 /* Establish interrupt handler */ 192 if (sa->sa_nintr != 0) 193 (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 194 IPL_NET, am7990_intr, sc); 195 } 196