1 /* $NetBSD: if_ie_obio.c,v 1.21 2005/12/11 12:19:20 christos 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/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: if_ie_obio.c,v 1.21 2005/12/11 12:19:20 christos Exp $"); 45 46 #include "opt_inet.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/device.h> 51 #include <sys/protosw.h> 52 #include <sys/socket.h> 53 #include <net/if.h> 54 #include <net/if_ether.h> 55 56 #ifdef INET 57 #include <netinet/in.h> 58 #include <netinet/in_systm.h> 59 #include <netinet/in_var.h> 60 #include <netinet/ip.h> 61 #include <netinet/if_inarp.h> 62 #endif 63 64 #include <machine/autoconf.h> 65 #include <machine/cpu.h> 66 #include <machine/dvma.h> 67 #include <machine/idprom.h> 68 #include <machine/vmparam.h> 69 70 #include "i82586.h" 71 #include "if_iereg.h" 72 #include "if_ievar.h" 73 74 static void ie_obreset(struct ie_softc *); 75 static void ie_obattend(struct ie_softc *); 76 static void ie_obrun(struct ie_softc *); 77 78 /* 79 * New-style autoconfig attachment 80 */ 81 82 static int ie_obio_match(struct device *, struct cfdata *, void *); 83 static void ie_obio_attach(struct device *, struct device *, void *); 84 85 CFATTACH_DECL(ie_obio, sizeof(struct ie_softc), 86 ie_obio_match, ie_obio_attach, NULL, NULL); 87 88 static int 89 ie_obio_match(struct device *parent, struct cfdata *cf, 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(struct device *parent, struct device *self, void *args) 106 { 107 struct ie_softc *sc = (void *) self; 108 struct confargs *ca = args; 109 110 sc->hard_type = IE_OBIO; 111 sc->reset_586 = ie_obreset; 112 sc->chan_attn = ie_obattend; 113 sc->run_586 = ie_obrun; 114 sc->sc_memcpy = memcpy; 115 sc->sc_memset = memset; 116 117 /* Map in the control registers. */ 118 sc->sc_reg = bus_mapin(ca->ca_bustype, 119 ca->ca_paddr, sizeof(struct ieob)); 120 121 /* 122 * The on-board "ie" is wired-up such that its 123 * memory access goes to the high 16 megabytes 124 * of the on-board memory space (on-board DVMA). 125 */ 126 sc->sc_iobase = (caddr_t)DVMA_OBIO_SLAVE_BASE; 127 128 /* 129 * The on-board "ie" just uses main memory, so 130 * we can choose how much memory to give it. 131 * XXX: Would like to use less than 64K... 132 */ 133 sc->sc_msize = 0x8000; /* MEMSIZE 32K */ 134 135 /* Allocate "shared" memory (in DVMA space). */ 136 sc->sc_maddr = dvma_malloc(sc->sc_msize); 137 if (sc->sc_maddr == NULL) 138 panic(": not enough dvma space"); 139 140 /* 141 * Set the System Configuration Pointer (SCP). 142 * Its location is system-dependent because the 143 * i82586 reads it from a fixed physical address. 144 * On this hardware, the i82586 address maps to 145 * a 24-bit offset in on-board DVMA space. The 146 * SCP happens to fall in a page used by the 147 * PROM monitor, which the PROM knows about. 148 */ 149 sc->scp = (volatile void *) (sc->sc_iobase + IE_SCP_ADDR); 150 151 /* 152 * The rest of ram is used for buffers. 153 */ 154 sc->buf_area = sc->sc_maddr; 155 sc->buf_area_sz = sc->sc_msize; 156 157 /* Install interrupt handler. */ 158 isr_add_autovect(ie_intr, (void *)sc, ca->ca_intpri); 159 160 /* Set the ethernet address. */ 161 idprom_etheraddr(sc->sc_addr); 162 163 /* Do machine-independent parts of attach. */ 164 ie_attach(sc); 165 } 166 167 168 /* 169 * onboard ie support 170 */ 171 172 /* Whack the "channel attetion" line. */ 173 void 174 ie_obattend(struct ie_softc *sc) 175 { 176 volatile struct ieob *ieo = (struct ieob *) sc->sc_reg; 177 178 ieo->obctrl |= IEOB_ATTEN; /* flag! */ 179 ieo->obctrl &= ~IEOB_ATTEN; /* down. */ 180 } 181 182 /* 183 * This is called during driver attach. 184 * Reset and initialize. 185 */ 186 void 187 ie_obreset(struct ie_softc *sc) 188 { 189 volatile struct ieob *ieo = (struct ieob *) sc->sc_reg; 190 ieo->obctrl = 0; 191 delay(20); 192 ieo->obctrl = (IEOB_NORSET | IEOB_ONAIR | IEOB_IENAB); 193 } 194 195 /* 196 * This is called at the end of ieinit(). 197 * optional. 198 */ 199 void 200 ie_obrun(struct ie_softc *sc) 201 { 202 /* do it all in reset */ 203 } 204 205