1 /* $NetBSD: if_ie_obio.c,v 1.13 1998/02/05 04:56:41 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/idprom.h> 63 #include <machine/vmparam.h> 64 65 #include "i82586.h" 66 #include "if_iereg.h" 67 #include "if_ievar.h" 68 69 static void ie_obreset __P((struct ie_softc *)); 70 static void ie_obattend __P((struct ie_softc *)); 71 static void ie_obrun __P((struct ie_softc *)); 72 73 /* 74 * New-style autoconfig attachment 75 */ 76 77 static int ie_obio_match __P((struct device *, struct cfdata *, void *)); 78 static void ie_obio_attach __P((struct device *, struct device *, void *)); 79 80 struct cfattach ie_obio_ca = { 81 sizeof(struct ie_softc), ie_obio_match, ie_obio_attach 82 }; 83 84 85 static int 86 ie_obio_match(parent, cf, args) 87 struct device *parent; 88 struct cfdata *cf; 89 void *args; 90 { 91 struct confargs *ca = args; 92 93 /* Make sure there is something there... */ 94 if (bus_peek(ca->ca_bustype, ca->ca_paddr, 1) == -1) 95 return (0); 96 97 /* Default interrupt priority. */ 98 if (ca->ca_intpri == -1) 99 ca->ca_intpri = 3; 100 101 return (1); 102 } 103 104 void 105 ie_obio_attach(parent, self, args) 106 struct device *parent; 107 struct device *self; 108 void *args; 109 { 110 struct ie_softc *sc = (void *) self; 111 struct confargs *ca = args; 112 113 sc->hard_type = IE_OBIO; 114 sc->reset_586 = ie_obreset; 115 sc->chan_attn = ie_obattend; 116 sc->run_586 = ie_obrun; 117 sc->sc_bcopy = bcopy; 118 sc->sc_bzero = bzero; 119 120 /* Map in the control registers. */ 121 sc->sc_reg = bus_mapin(ca->ca_bustype, 122 ca->ca_paddr, sizeof(struct ieob)); 123 124 /* 125 * The on-board "ie" is wired-up such that its 126 * memory access goes to the high 16 megabytes 127 * of the on-board memory space (on-board DVMA). 128 */ 129 sc->sc_iobase = (caddr_t)DVMA_OBIO_SLAVE_BASE; 130 131 /* 132 * The on-board "ie" just uses main memory, so 133 * we can choose how much memory to give it. 134 * XXX: Would like to use less than 64K... 135 */ 136 sc->sc_msize = 0x8000; /* MEMSIZE 32K */ 137 138 /* Allocate "shared" memory (in DVMA space). */ 139 sc->sc_maddr = dvma_malloc(sc->sc_msize); 140 if (sc->sc_maddr == NULL) 141 panic(": not enough dvma space"); 142 143 /* 144 * Set the System Configuration Pointer (SCP). 145 * Its location is system-dependent because the 146 * i82586 reads it from a fixed physical address. 147 * On this hardware, the i82586 address maps to 148 * a 24-bit offset in on-board DVMA space. The 149 * SCP happens to fall in a page used by the 150 * PROM monitor, which the PROM knows about. 151 */ 152 sc->scp = (volatile void *) (sc->sc_iobase + IE_SCP_ADDR); 153 154 /* 155 * The rest of ram is used for buffers. 156 */ 157 sc->buf_area = sc->sc_maddr; 158 sc->buf_area_sz = sc->sc_msize; 159 160 /* Install interrupt handler. */ 161 isr_add_autovect(ie_intr, (void *)sc, ca->ca_intpri); 162 163 /* Set the ethernet address. */ 164 idprom_etheraddr(sc->sc_addr); 165 166 /* Do machine-independent parts of attach. */ 167 ie_attach(sc); 168 } 169 170 171 /* 172 * onboard ie support 173 */ 174 175 /* Whack the "channel attetion" line. */ 176 void 177 ie_obattend(sc) 178 struct ie_softc *sc; 179 { 180 volatile struct ieob *ieo = (struct ieob *) sc->sc_reg; 181 182 ieo->obctrl |= IEOB_ATTEN; /* flag! */ 183 ieo->obctrl &= ~IEOB_ATTEN; /* down. */ 184 } 185 186 /* 187 * This is called during driver attach. 188 * Reset and initialize. 189 */ 190 void 191 ie_obreset(sc) 192 struct ie_softc *sc; 193 { 194 volatile struct ieob *ieo = (struct ieob *) sc->sc_reg; 195 ieo->obctrl = 0; 196 delay(20); 197 ieo->obctrl = (IEOB_NORSET | IEOB_ONAIR | IEOB_IENAB); 198 } 199 200 /* 201 * This is called at the end of ieinit(). 202 * optional. 203 */ 204 void 205 ie_obrun(sc) 206 struct ie_softc *sc; 207 { 208 /* do it all in reset */ 209 } 210 211