1 /* $NetBSD: if_ie_obio.c,v 1.26 2024/12/20 23:52:00 tsutsui 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Machine-dependent glue for the Intel Ethernet (ie) driver. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: if_ie_obio.c,v 1.26 2024/12/20 23:52:00 tsutsui Exp $"); 38 39 #include "opt_inet.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/device.h> 44 #include <sys/protosw.h> 45 #include <sys/socket.h> 46 #include <net/if.h> 47 #include <net/if_ether.h> 48 49 #ifdef INET 50 #include <netinet/in.h> 51 #include <netinet/in_systm.h> 52 #include <netinet/in_var.h> 53 #include <netinet/ip.h> 54 #include <netinet/if_inarp.h> 55 #endif 56 57 #include <machine/autoconf.h> 58 #include <machine/cpu.h> 59 #include <machine/dvma.h> 60 #include <machine/idprom.h> 61 #include <machine/vmparam.h> 62 63 #include "i82586.h" 64 #include "if_iereg.h" 65 #include "if_ievar.h" 66 67 static void ie_obreset(struct ie_softc *); 68 static void ie_obattend(struct ie_softc *); 69 static void ie_obrun(struct ie_softc *); 70 71 /* 72 * New-style autoconfig attachment 73 */ 74 75 static int ie_obio_match(device_t, cfdata_t, void *); 76 static void ie_obio_attach(device_t, device_t, void *); 77 78 CFATTACH_DECL_NEW(ie_obio, sizeof(struct ie_softc), 79 ie_obio_match, ie_obio_attach, NULL, NULL); 80 81 static int 82 ie_obio_match(device_t parent, cfdata_t cf, void *args) 83 { 84 struct confargs *ca = args; 85 86 /* Make sure there is something there... */ 87 if (bus_peek(ca->ca_bustype, ca->ca_paddr, 1) == -1) 88 return 0; 89 90 /* Default interrupt priority. */ 91 if (ca->ca_intpri == -1) 92 ca->ca_intpri = 3; 93 94 return 1; 95 } 96 97 void 98 ie_obio_attach(device_t parent, device_t self, void *args) 99 { 100 struct ie_softc *sc = device_private(self); 101 struct confargs *ca = args; 102 103 sc->sc_dev = self; 104 sc->hard_type = IE_OBIO; 105 sc->reset_586 = ie_obreset; 106 sc->chan_attn = ie_obattend; 107 sc->run_586 = ie_obrun; 108 sc->sc_memcpy = memcpy; 109 sc->sc_memset = memset; 110 111 /* Map in the control registers. */ 112 sc->sc_reg = bus_mapin(ca->ca_bustype, 113 ca->ca_paddr, sizeof(struct ieob)); 114 115 /* 116 * The on-board "ie" is wired-up such that its 117 * memory access goes to the high 16 megabytes 118 * of the on-board memory space (on-board DVMA). 119 */ 120 sc->sc_iobase = (void *)DVMA_OBIO_SLAVE_BASE; 121 122 /* 123 * The on-board "ie" just uses main memory, so 124 * we can choose how much memory to give it. 125 * XXX: Would like to use less than 64K... 126 */ 127 sc->sc_msize = 0x8000; /* MEMSIZE 32K */ 128 129 /* Allocate "shared" memory (in DVMA space). */ 130 sc->sc_maddr = dvma_malloc(sc->sc_msize); 131 if (sc->sc_maddr == NULL) 132 panic(": not enough dvma space"); 133 134 /* 135 * Set the System Configuration Pointer (SCP). 136 * Its location is system-dependent because the 137 * i82586 reads it from a fixed physical address. 138 * On this hardware, the i82586 address maps to 139 * a 24-bit offset in on-board DVMA space. The 140 * SCP happens to fall in a page used by the 141 * PROM monitor, which the PROM knows about. 142 */ 143 sc->scp = (volatile void *)((char *)sc->sc_iobase + IE_SCP_ADDR); 144 145 /* 146 * The rest of ram is used for buffers. 147 */ 148 sc->buf_area = sc->sc_maddr; 149 sc->buf_area_sz = sc->sc_msize; 150 151 /* Install interrupt handler. */ 152 isr_add_autovect(ie_intr, sc, ca->ca_intpri); 153 154 /* Set the ethernet address. */ 155 idprom_etheraddr(sc->sc_addr); 156 157 /* Do machine-independent parts of attach. */ 158 ie_attach(sc); 159 } 160 161 162 /* 163 * onboard ie support 164 */ 165 166 /* Whack the "channel attetion" line. */ 167 void 168 ie_obattend(struct ie_softc *sc) 169 { 170 volatile struct ieob *ieo = (struct ieob *)sc->sc_reg; 171 172 ieo->obctrl |= IEOB_ATTEN; /* flag! */ 173 ieo->obctrl &= ~IEOB_ATTEN; /* down. */ 174 } 175 176 /* 177 * This is called during driver attach. 178 * Reset and initialize. 179 */ 180 void 181 ie_obreset(struct ie_softc *sc) 182 { 183 volatile struct ieob *ieo = (struct ieob *)sc->sc_reg; 184 ieo->obctrl = 0; 185 delay(20); 186 ieo->obctrl = (IEOB_NORSET | IEOB_ONAIR | IEOB_IENAB); 187 } 188 189 /* 190 * This is called at the end of ieinit(). 191 * optional. 192 */ 193 void 194 ie_obrun(struct ie_softc *sc) 195 { 196 197 /* do it all in reset */ 198 } 199
Indexes created Mon Sep 22 05:09:51 GMT 2025