1 /* $NetBSD: if_ie_obio.c,v 1.12 1997/12/08 21:49:50 gwr Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Gordon W. Ross. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Machine-dependent glue for the Intel Ethernet (ie) driver. 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 #include <sys/protosw.h> 47 #include <sys/socket.h> 48 #include <net/if.h> 49 #include <net/if_ether.h> 50 51 #ifdef INET 52 #include <netinet/in.h> 53 #include <netinet/in_systm.h> 54 #include <netinet/in_var.h> 55 #include <netinet/ip.h> 56 #include <netinet/if_inarp.h> 57 #endif 58 59 #include <machine/autoconf.h> 60 #include <machine/cpu.h> 61 #include <machine/dvma.h> 62 #include <machine/obio.h> 63 #include <machine/idprom.h> 64 #include <machine/vmparam.h> 65 66 #include "i82586.h" 67 #include "if_iereg.h" 68 #include "if_ievar.h" 69 70 static void ie_obreset __P((struct ie_softc *)); 71 static void ie_obattend __P((struct ie_softc *)); 72 static void ie_obrun __P((struct ie_softc *)); 73 74 /* 75 * New-style autoconfig attachment 76 */ 77 78 static int ie_obio_match __P((struct device *, struct cfdata *, void *)); 79 static void ie_obio_attach __P((struct device *, struct device *, void *)); 80 81 struct cfattach ie_obio_ca = { 82 sizeof(struct ie_softc), ie_obio_match, ie_obio_attach 83 }; 84 85 86 static int 87 ie_obio_match(parent, cf, args) 88 struct device *parent; 89 struct cfdata *cf; 90 void *args; 91 { 92 struct confargs *ca = args; 93 94 /* We use obio_mapin(), so require OBIO. */ 95 if (ca->ca_bustype != BUS_OBIO) 96 return (0); 97 98 /* Make sure there is something there... */ 99 if (bus_peek(ca->ca_bustype, ca->ca_paddr, 1) == -1) 100 return (0); 101 102 /* Default interrupt priority. */ 103 if (ca->ca_intpri == -1) 104 ca->ca_intpri = 3; 105 106 return (1); 107 } 108 109 void 110 ie_obio_attach(parent, self, args) 111 struct device *parent; 112 struct device *self; 113 void *args; 114 { 115 struct ie_softc *sc = (void *) self; 116 struct confargs *ca = args; 117 118 sc->hard_type = IE_OBIO; 119 sc->reset_586 = ie_obreset; 120 sc->chan_attn = ie_obattend; 121 sc->run_586 = ie_obrun; 122 sc->sc_bcopy = bcopy; 123 sc->sc_bzero = bzero; 124 125 /* Map in the control registers. */ 126 sc->sc_reg = obio_mapin(ca->ca_paddr, sizeof(struct ieob)); 127 128 /* 129 * The on-board "ie" is wired-up such that its 130 * memory access goes to the high 16 megabytes 131 * of the on-board memory space (on-board DVMA). 132 */ 133 sc->sc_iobase = (caddr_t)DVMA_OBIO_SLAVE_BASE; 134 135 /* 136 * The on-board "ie" just uses main memory, so 137 * we can choose how much memory to give it. 138 * XXX: Would like to use less than 64K... 139 */ 140 sc->sc_msize = 0x8000; /* MEMSIZE 32K */ 141 142 /* Allocate "shared" memory (in DVMA space). */ 143 sc->sc_maddr = dvma_malloc(sc->sc_msize); 144 if (sc->sc_maddr == NULL) 145 panic(": not enough dvma space"); 146 147 /* 148 * Set the System Configuration Pointer (SCP). 149 * Its location is system-dependent because the 150 * i82586 reads it from a fixed physical address. 151 * On this hardware, the i82586 address maps to 152 * a 24-bit offset in on-board DVMA space. The 153 * SCP happens to fall in a page used by the 154 * PROM monitor, which the PROM knows about. 155 */ 156 sc->scp = (volatile void *) (sc->sc_iobase + IE_SCP_ADDR); 157 158 /* 159 * The rest of ram is used for buffers. 160 */ 161 sc->buf_area = sc->sc_maddr; 162 sc->buf_area_sz = sc->sc_msize; 163 164 /* Install interrupt handler. */ 165 isr_add_autovect(ie_intr, (void *)sc, ca->ca_intpri); 166 167 /* Set the ethernet address. */ 168 idprom_etheraddr(sc->sc_addr); 169 170 /* Do machine-independent parts of attach. */ 171 ie_attach(sc); 172 } 173 174 175 /* 176 * onboard ie support 177 */ 178 179 /* Whack the "channel attetion" line. */ 180 void 181 ie_obattend(sc) 182 struct ie_softc *sc; 183 { 184 volatile struct ieob *ieo = (struct ieob *) sc->sc_reg; 185 186 ieo->obctrl |= IEOB_ATTEN; /* flag! */ 187 ieo->obctrl &= ~IEOB_ATTEN; /* down. */ 188 } 189 190 /* 191 * This is called during driver attach. 192 * Reset and initialize. 193 */ 194 void 195 ie_obreset(sc) 196 struct ie_softc *sc; 197 { 198 volatile struct ieob *ieo = (struct ieob *) sc->sc_reg; 199 ieo->obctrl = 0; 200 delay(20); 201 ieo->obctrl = (IEOB_NORSET | IEOB_ONAIR | IEOB_IENAB); 202 } 203 204 /* 205 * This is called at the end of ieinit(). 206 * optional. 207 */ 208 void 209 ie_obrun(sc) 210 struct ie_softc *sc; 211 { 212 /* do it all in reset */ 213 } 214 215