1 /* $NetBSD: if_ie_obio.c,v 1.18 2002/10/02 16:02:25 thorpej 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 #include "opt_inet.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/device.h> 47 #include <sys/protosw.h> 48 #include <sys/socket.h> 49 #include <net/if.h> 50 #include <net/if_ether.h> 51 52 #ifdef INET 53 #include <netinet/in.h> 54 #include <netinet/in_systm.h> 55 #include <netinet/in_var.h> 56 #include <netinet/ip.h> 57 #include <netinet/if_inarp.h> 58 #endif 59 60 #include <machine/autoconf.h> 61 #include <machine/cpu.h> 62 #include <machine/dvma.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 CFATTACH_DECL(ie_obio, sizeof(struct ie_softc), 82 ie_obio_match, ie_obio_attach, NULL, NULL); 83 84 static int 85 ie_obio_match(parent, cf, args) 86 struct device *parent; 87 struct cfdata *cf; 88 void *args; 89 { 90 struct confargs *ca = args; 91 92 /* Make sure there is something there... */ 93 if (bus_peek(ca->ca_bustype, ca->ca_paddr, 1) == -1) 94 return (0); 95 96 /* Default interrupt priority. */ 97 if (ca->ca_intpri == -1) 98 ca->ca_intpri = 3; 99 100 return (1); 101 } 102 103 void 104 ie_obio_attach(parent, self, args) 105 struct device *parent; 106 struct device *self; 107 void *args; 108 { 109 struct ie_softc *sc = (void *) self; 110 struct confargs *ca = args; 111 112 sc->hard_type = IE_OBIO; 113 sc->reset_586 = ie_obreset; 114 sc->chan_attn = ie_obattend; 115 sc->run_586 = ie_obrun; 116 sc->sc_memcpy = memcpy; 117 sc->sc_memset = memset; 118 119 /* Map in the control registers. */ 120 sc->sc_reg = bus_mapin(ca->ca_bustype, 121 ca->ca_paddr, sizeof(struct ieob)); 122 123 /* 124 * The on-board "ie" is wired-up such that its 125 * memory access goes to the high 16 megabytes 126 * of the on-board memory space (on-board DVMA). 127 */ 128 sc->sc_iobase = (caddr_t)DVMA_OBIO_SLAVE_BASE; 129 130 /* 131 * The on-board "ie" just uses main memory, so 132 * we can choose how much memory to give it. 133 * XXX: Would like to use less than 64K... 134 */ 135 sc->sc_msize = 0x8000; /* MEMSIZE 32K */ 136 137 /* Allocate "shared" memory (in DVMA space). */ 138 sc->sc_maddr = dvma_malloc(sc->sc_msize); 139 if (sc->sc_maddr == NULL) 140 panic(": not enough dvma space"); 141 142 /* 143 * Set the System Configuration Pointer (SCP). 144 * Its location is system-dependent because the 145 * i82586 reads it from a fixed physical address. 146 * On this hardware, the i82586 address maps to 147 * a 24-bit offset in on-board DVMA space. The 148 * SCP happens to fall in a page used by the 149 * PROM monitor, which the PROM knows about. 150 */ 151 sc->scp = (volatile void *) (sc->sc_iobase + IE_SCP_ADDR); 152 153 /* 154 * The rest of ram is used for buffers. 155 */ 156 sc->buf_area = sc->sc_maddr; 157 sc->buf_area_sz = sc->sc_msize; 158 159 /* Install interrupt handler. */ 160 isr_add_autovect(ie_intr, (void *)sc, ca->ca_intpri); 161 162 /* Set the ethernet address. */ 163 idprom_etheraddr(sc->sc_addr); 164 165 /* Do machine-independent parts of attach. */ 166 ie_attach(sc); 167 } 168 169 170 /* 171 * onboard ie support 172 */ 173 174 /* Whack the "channel attetion" line. */ 175 void 176 ie_obattend(sc) 177 struct ie_softc *sc; 178 { 179 volatile struct ieob *ieo = (struct ieob *) sc->sc_reg; 180 181 ieo->obctrl |= IEOB_ATTEN; /* flag! */ 182 ieo->obctrl &= ~IEOB_ATTEN; /* down. */ 183 } 184 185 /* 186 * This is called during driver attach. 187 * Reset and initialize. 188 */ 189 void 190 ie_obreset(sc) 191 struct ie_softc *sc; 192 { 193 volatile struct ieob *ieo = (struct ieob *) sc->sc_reg; 194 ieo->obctrl = 0; 195 delay(20); 196 ieo->obctrl = (IEOB_NORSET | IEOB_ONAIR | IEOB_IENAB); 197 } 198 199 /* 200 * This is called at the end of ieinit(). 201 * optional. 202 */ 203 void 204 ie_obrun(sc) 205 struct ie_softc *sc; 206 { 207 /* do it all in reset */ 208 } 209 210