1 /* $OpenBSD: if_le_lebuffer.c,v 1.5 2003/07/25 03:50:56 jason Exp $ */ 2 /* $NetBSD: if_le_lebuffer.c,v 1.10 2002/03/11 16:00:56 pk Exp $ */ 3 4 /*- 5 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace 10 * Simulation Facility, NASA Ames Research Center; Paul Kranenburg. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 #include "bpfilter.h" 42 43 #include <sys/cdefs.h> 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/mbuf.h> 47 #include <sys/syslog.h> 48 #include <sys/socket.h> 49 #include <sys/device.h> 50 #include <sys/malloc.h> 51 52 #include <net/if.h> 53 #include <net/if_media.h> 54 55 #ifdef INET 56 #include <netinet/in.h> 57 #include <netinet/if_ether.h> 58 #endif 59 60 #include <machine/bus.h> 61 #include <machine/intr.h> 62 #include <machine/autoconf.h> 63 64 #include <dev/sbus/sbusvar.h> 65 #include <dev/sbus/lebuffervar.h> 66 67 #include <dev/ic/am7990reg.h> 68 #include <dev/ic/am7990var.h> 69 70 /* 71 * LANCE registers. 72 */ 73 #define LEREG1_RDP 0 /* Register Data port */ 74 #define LEREG1_RAP 2 /* Register Address port */ 75 76 struct le_softc { 77 struct am7990_softc sc_am7990; /* glue to MI code */ 78 struct sbusdev sc_sd; /* sbus device */ 79 bus_space_tag_t sc_bustag; 80 bus_dma_tag_t sc_dmatag; 81 bus_space_handle_t sc_reg; /* LANCE registers */ 82 }; 83 84 85 int lematch_lebuffer(struct device *, void *, void *); 86 void leattach_lebuffer(struct device *, struct device *, void *); 87 88 struct cfattach le_lebuffer_ca = { 89 sizeof(struct le_softc), lematch_lebuffer, leattach_lebuffer 90 }; 91 92 extern struct cfdriver le_cd; 93 94 struct cfdriver lebuffer_cd = { 95 NULL, "lebuffer", DV_DULL 96 }; 97 98 void le_lebuffer_wrcsr(struct am7990_softc *, u_int16_t, u_int16_t); 99 u_int16_t le_lebuffer_rdcsr(struct am7990_softc *, u_int16_t); 100 101 void 102 le_lebuffer_wrcsr(struct am7990_softc *sc, u_int16_t port, u_int16_t val) 103 { 104 struct le_softc *lesc = (struct le_softc *)sc; 105 106 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 107 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val); 108 109 #if defined(SUN4M) 110 /* 111 * We need to flush the Sbus->Mbus write buffers. This can most 112 * easily be accomplished by reading back the register that we 113 * just wrote (thanks to Chris Torek for this solution). 114 */ 115 if (CPU_ISSUN4M) { 116 volatile u_int16_t discard; 117 discard = bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, 118 LEREG1_RDP); 119 } 120 #endif 121 } 122 123 u_int16_t 124 le_lebuffer_rdcsr(struct am7990_softc *sc, u_int16_t port) 125 { 126 struct le_softc *lesc = (struct le_softc *)sc; 127 128 bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); 129 return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP)); 130 } 131 132 int 133 lematch_lebuffer(struct device *parent, void *vcf, void *aux) 134 { 135 struct sbus_attach_args *sa = aux; 136 struct cfdata *cf = vcf; 137 138 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 139 } 140 141 142 void 143 leattach_lebuffer(struct device *parent, struct device *self, void *aux) 144 { 145 struct sbus_attach_args *sa = aux; 146 struct le_softc *lesc = (struct le_softc *)self; 147 struct am7990_softc *sc = &lesc->sc_am7990; 148 struct lebuf_softc *lebuf = (struct lebuf_softc *)parent; 149 /* XXX the following declarations should be elsewhere */ 150 extern void myetheraddr(u_char *); 151 152 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, sa->sa_offset, sa->sa_size, 157 0, 0, &lesc->sc_reg)) { 158 printf(": cannot map registers\n"); 159 return; 160 } 161 162 sc->sc_mem = lebuf->sc_buffer; 163 sc->sc_memsize = lebuf->sc_bufsiz; 164 sc->sc_addr = 0; /* Lance view is offset by buffer location */ 165 lebuf->attached = 1; 166 167 /* That old black magic... */ 168 sc->sc_conf3 = getpropint(sa->sa_node, "busmaster-regval", 169 LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON); 170 171 /* Assume SBus is grandparent */ 172 lesc->sc_sd.sd_reset = (void *)am7990_reset; 173 sbus_establish(&lesc->sc_sd, parent); 174 175 myetheraddr(sc->sc_arpcom.ac_enaddr); 176 177 sc->sc_copytodesc = am7990_copytobuf_contig; 178 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 179 sc->sc_copytobuf = am7990_copytobuf_contig; 180 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 181 sc->sc_zerobuf = am7990_zerobuf_contig; 182 183 sc->sc_rdcsr = le_lebuffer_rdcsr; 184 sc->sc_wrcsr = le_lebuffer_wrcsr; 185 186 am7990_config(&lesc->sc_am7990); 187 188 /* Establish interrupt handler */ 189 if (sa->sa_nintr != 0) 190 (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 191 IPL_NET, 0, am7990_intr, sc, self->dv_xname); 192 } 193