if_le_lebuffer.c revision 1.23
1 /* $NetBSD: if_le_lebuffer.c,v 1.23 2008/04/04 12:25:07 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_lebuffer.c,v 1.23 2008/04/04 12:25:07 tsutsui Exp $"); 42 43 #include "opt_inet.h" 44 #include "bpfilter.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/mbuf.h> 49 #include <sys/syslog.h> 50 #include <sys/socket.h> 51 #include <sys/device.h> 52 #include <sys/malloc.h> 53 54 #include <net/if.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 58 #ifdef INET 59 #include <netinet/in.h> 60 #include <netinet/if_inarp.h> 61 #endif 62 63 #include <sys/bus.h> 64 #include <sys/intr.h> 65 #include <machine/autoconf.h> 66 67 #include <dev/sbus/sbusvar.h> 68 #include <dev/sbus/lebuffervar.h> 69 70 #include <dev/ic/lancereg.h> 71 #include <dev/ic/lancevar.h> 72 #include <dev/ic/am7990reg.h> 73 #include <dev/ic/am7990var.h> 74 75 #include "ioconf.h" 76 77 /* 78 * LANCE registers. 79 */ 80 #define LEREG1_RDP 0 /* Register Data port */ 81 #define LEREG1_RAP 2 /* Register Address port */ 82 83 struct le_softc { 84 struct am7990_softc sc_am7990; /* glue to MI code */ 85 struct sbusdev sc_sd; /* sbus device */ 86 bus_space_tag_t sc_bustag; 87 bus_dma_tag_t sc_dmatag; 88 bus_space_handle_t sc_reg; /* LANCE registers */ 89 }; 90 91 92 int lematch_lebuffer(device_t, cfdata_t, void *); 93 void leattach_lebuffer(device_t, device_t, void *); 94 95 /* 96 * Media types supported. 97 */ 98 static int lemedia[] = { 99 IFM_ETHER|IFM_10_T, 100 }; 101 #define NLEMEDIA __arraycount(lemedia) 102 103 CFATTACH_DECL_NEW(le_lebuffer, sizeof(struct le_softc), 104 lematch_lebuffer, leattach_lebuffer, NULL, NULL); 105 106 #if defined(_KERNEL_OPT) 107 #include "opt_ddb.h" 108 #endif 109 110 static void lewrcsr(struct lance_softc *, uint16_t, uint16_t); 111 static uint16_t lerdcsr(struct lance_softc *, uint16_t); 112 113 static void 114 lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 115 { 116 struct le_softc *lesc = (struct le_softc *)sc; 117 bus_space_tag_t t = lesc->sc_bustag; 118 bus_space_handle_t h = lesc->sc_reg; 119 120 bus_space_write_2(t, h, LEREG1_RAP, port); 121 bus_space_write_2(t, h, LEREG1_RDP, val); 122 123 #if defined(SUN4M) 124 /* 125 * We need to flush the Sbus->Mbus write buffers. This can most 126 * easily be accomplished by reading back the register that we 127 * just wrote (thanks to Chris Torek for this solution). 128 */ 129 (void)bus_space_read_2(t, h, LEREG1_RDP); 130 #endif 131 } 132 133 static uint16_t 134 lerdcsr(struct lance_softc *sc, uint16_t port) 135 { 136 struct le_softc *lesc = (struct le_softc *)sc; 137 bus_space_tag_t t = lesc->sc_bustag; 138 bus_space_handle_t h = lesc->sc_reg; 139 140 bus_space_write_2(t, h, LEREG1_RAP, port); 141 return (bus_space_read_2(t, h, LEREG1_RDP)); 142 } 143 144 int 145 lematch_lebuffer(device_t parent, cfdata_t cf, void *aux) 146 { 147 struct sbus_attach_args *sa = aux; 148 149 return (strcmp(cf->cf_name, sa->sa_name) == 0); 150 } 151 152 153 void 154 leattach_lebuffer(device_t parent, device_t self, void *aux) 155 { 156 struct le_softc *lesc = device_private(self); 157 struct lance_softc *sc = &lesc->sc_am7990.lsc; 158 struct lebuf_softc *lebuf = device_private(parent); 159 struct sbus_attach_args *sa = aux; 160 161 sc->sc_dev = self; 162 lesc->sc_bustag = sa->sa_bustag; 163 lesc->sc_dmatag = sa->sa_dmatag; 164 165 if (sbus_bus_map(sa->sa_bustag, 166 sa->sa_slot, 167 sa->sa_offset, 168 sa->sa_size, 169 0, &lesc->sc_reg)) { 170 aprint_error(": cannot map registers\n"); 171 return; 172 } 173 174 sc->sc_mem = lebuf->sc_buffer; 175 sc->sc_memsize = lebuf->sc_bufsiz; 176 sc->sc_addr = 0; /* Lance view is offset by buffer location */ 177 lebuf->attached = 1; 178 179 /* That old black magic... */ 180 sc->sc_conf3 = prom_getpropint(sa->sa_node, "busmaster-regval", 181 LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON); 182 183 /* Assume SBus is grandparent */ 184 lesc->sc_sd.sd_reset = (void *)lance_reset; 185 sbus_establish(&lesc->sc_sd, parent); 186 187 sc->sc_supmedia = lemedia; 188 sc->sc_nsupmedia = NLEMEDIA; 189 sc->sc_defaultmedia = lemedia[0]; 190 191 prom_getether(sa->sa_node, sc->sc_enaddr); 192 193 sc->sc_copytodesc = lance_copytobuf_contig; 194 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 195 sc->sc_copytobuf = lance_copytobuf_contig; 196 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 197 sc->sc_zerobuf = lance_zerobuf_contig; 198 199 sc->sc_rdcsr = lerdcsr; 200 sc->sc_wrcsr = lewrcsr; 201 202 am7990_config(&lesc->sc_am7990); 203 204 /* Establish interrupt handler */ 205 if (sa->sa_nintr != 0) 206 (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 207 IPL_NET, am7990_intr, sc); 208 } 209
Indexes created Wed Sep 24 14:09:57 GMT 2025