if_ie_obio.c revision 1.5
1 /* $NetBSD: if_ie_obio.c,v 1.5 1996/10/30 00:24:34 gwr Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Gordon W. Ross 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Gordon Ross 18 * 4. The name of the Author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Machine-dependent glue for the Intel Ethernet (ie) driver. 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 #include <sys/protosw.h> 41 #include <sys/socket.h> 42 #include <net/if.h> 43 44 #ifdef INET 45 #include <netinet/in.h> 46 #include <netinet/in_systm.h> 47 #include <netinet/in_var.h> 48 #include <netinet/ip.h> 49 #include <netinet/if_ether.h> 50 #endif 51 52 #include <machine/autoconf.h> 53 #include <machine/cpu.h> 54 #include <machine/dvma.h> 55 #include <machine/isr.h> 56 #include <machine/obio.h> 57 #include <machine/idprom.h> 58 #include <machine/vmparam.h> 59 60 #include "i82586.h" 61 #include "if_iereg.h" 62 #include "if_ievar.h" 63 64 static void ie_obreset __P((struct ie_softc *)); 65 static void ie_obattend __P((struct ie_softc *)); 66 static void ie_obrun __P((struct ie_softc *)); 67 68 /* 69 * New-style autoconfig attachment 70 */ 71 72 static int ie_obio_match __P((struct device *, void *, void *)); 73 static void ie_obio_attach __P((struct device *, struct device *, void *)); 74 75 struct cfattach ie_obio_ca = { 76 sizeof(struct ie_softc), ie_obio_match, ie_obio_attach 77 }; 78 79 80 static int 81 ie_obio_match(parent, vcf, args) 82 struct device *parent; 83 void *vcf, *args; 84 { 85 struct cfdata *cf = vcf; 86 struct confargs *ca = args; 87 88 /* Make sure there is something there... */ 89 if (bus_peek(ca->ca_bustype, ca->ca_paddr, 1) == -1) 90 return (0); 91 92 /* Default interrupt priority. */ 93 if (ca->ca_intpri == -1) 94 ca->ca_intpri = 3; 95 96 return (1); 97 } 98 99 void 100 ie_obio_attach(parent, self, args) 101 struct device *parent; 102 struct device *self; 103 void *args; 104 { 105 struct ie_softc *sc = (void *) self; 106 struct cfdata *cf = self->dv_cfdata; 107 struct confargs *ca = args; 108 109 sc->hard_type = IE_OBIO; 110 sc->reset_586 = ie_obreset; 111 sc->chan_attn = ie_obattend; 112 sc->run_586 = ie_obrun; 113 sc->sc_bcopy = bcopy; 114 sc->sc_bzero = bzero; 115 116 /* 117 * The on-board "ie" just uses main memory, so 118 * we can choose how much memory to give it. 119 * XXX: Would like to use less than 64K... 120 */ 121 sc->sc_msize = 0x8000; /* MEMSIZE 32K */ 122 123 /* Map in the control registers. */ 124 sc->sc_reg = obio_alloc(ca->ca_paddr, OBIO_INTEL_ETHER_SIZE); 125 126 /* Allocate "shared" memory (in DVMA space). */ 127 sc->sc_maddr = dvma_malloc(sc->sc_msize); 128 if (sc->sc_maddr == NULL) 129 panic(": not enough dvma space"); 130 131 /* 132 * The on-board "ie" is wired-up such that its 133 * memory access goes to the high 16 megabytes 134 * of the on-board memory space (on-board DVMA). 135 */ 136 sc->sc_iobase = (caddr_t)DVMA_OBIO_SLAVE_BASE; 137 138 /* 139 * Set the System Configuration Pointer (SCP). 140 * Its location is system-dependent because the 141 * i82586 reads it from a fixed physical address. 142 * On this hardware, the i82586 address maps to 143 * a 24-bit offset in on-board DVMA space. The 144 * SCP happens to fall in a page used by the 145 * PROM monitor, which the PROM knows about. 146 */ 147 sc->scp = (volatile void *) (sc->sc_iobase + IE_SCP_ADDR); 148 149 /* 150 * The rest of ram is used for buffers. 151 */ 152 sc->buf_area = sc->sc_maddr; 153 sc->buf_area_sz = sc->sc_msize; 154 155 /* Set the ethernet address. */ 156 idprom_etheraddr(sc->sc_addr); 157 158 /* Do machine-independent parts of attach. */ 159 ie_attach(sc); 160 161 /* Install interrupt handler. */ 162 isr_add_autovect(ie_intr, (void *)sc, ca->ca_intpri); 163 } 164 165 166 /* 167 * onboard ie support 168 */ 169 void 170 ie_obreset(sc) 171 struct ie_softc *sc; 172 { 173 volatile struct ieob *ieo = (struct ieob *) sc->sc_reg; 174 ieo->obctrl = 0; 175 delay(100); /* XXX could be shorter? */ 176 ieo->obctrl = IEOB_NORSET; 177 } 178 void 179 ie_obattend(sc) 180 struct ie_softc *sc; 181 { 182 volatile struct ieob *ieo = (struct ieob *) sc->sc_reg; 183 184 ieo->obctrl |= IEOB_ATTEN; /* flag! */ 185 ieo->obctrl &= ~IEOB_ATTEN; /* down. */ 186 } 187 188 void 189 ie_obrun(sc) 190 struct ie_softc *sc; 191 { 192 volatile struct ieob *ieo = (struct ieob *) sc->sc_reg; 193 194 ieo->obctrl |= (IEOB_ONAIR|IEOB_IENAB|IEOB_NORSET); 195 } 196 197
Indexes created Thu Sep 25 16:09:42 GMT 2025