1 /* $NetBSD: if_le.c,v 1.34 1996/10/14 07:14:17 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1995 Charles M. Hannum. All rights reserved. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Ralph Campbell and Rick Macklem. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 40 */ 41 42 #include "bpfilter.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/mbuf.h> 47 #include <sys/syslog.h> 48 #include <sys/socket.h> 49 #include <sys/device.h> 50 51 #include <net/if.h> 52 53 #ifdef INET 54 #include <netinet/in.h> 55 #include <netinet/if_ether.h> 56 #endif 57 58 #include <machine/cpu.h> 59 #include <machine/mtpr.h> 60 61 #include <hp300/hp300/isr.h> 62 63 #ifdef USELEDS 64 #include <hp300/hp300/led.h> 65 #endif 66 67 #include <hp300/dev/device.h> 68 69 #include <dev/ic/am7990reg.h> 70 #include <dev/ic/am7990var.h> 71 72 #include <hp300/dev/if_lereg.h> 73 #include <hp300/dev/if_levar.h> 74 75 #include "le.h" 76 struct le_softc le_softc[NLE]; 77 78 int lematch __P((struct hp_device *)); 79 void leattach __P((struct hp_device *)); 80 int leintr __P((void *)); 81 82 struct driver ledriver = { 83 lematch, leattach, "le", 84 }; 85 86 /* offsets for: ID, REGS, MEM, NVRAM */ 87 int lestd[] = { 0, 0x4000, 0x8000, 0xC008 }; 88 89 hide void lewrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); 90 hide u_int16_t lerdcsr __P((struct am7990_softc *, u_int16_t)); 91 92 hide void 93 lewrcsr(sc, port, val) 94 struct am7990_softc *sc; 95 u_int16_t port, val; 96 { 97 register struct lereg0 *ler0 = ((struct le_softc *)sc)->sc_r0; 98 register struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 99 100 do { 101 ler1->ler1_rap = port; 102 } while ((ler0->ler0_status & LE_ACK) == 0); 103 do { 104 ler1->ler1_rdp = val; 105 } while ((ler0->ler0_status & LE_ACK) == 0); 106 } 107 108 hide u_int16_t 109 lerdcsr(sc, port) 110 struct am7990_softc *sc; 111 u_int16_t port; 112 { 113 register struct lereg0 *ler0 = ((struct le_softc *)sc)->sc_r0; 114 register struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1; 115 u_int16_t val; 116 117 do { 118 ler1->ler1_rap = port; 119 } while ((ler0->ler0_status & LE_ACK) == 0); 120 do { 121 val = ler1->ler1_rdp; 122 } while ((ler0->ler0_status & LE_ACK) == 0); 123 return (val); 124 } 125 126 int 127 lematch(hd) 128 struct hp_device *hd; 129 { 130 register struct lereg0 *ler0; 131 struct le_softc *lesc = &le_softc[hd->hp_unit]; 132 133 ler0 = (struct lereg0 *)(lestd[0] + (int)hd->hp_addr); 134 if (ler0->ler0_id != LEID) 135 return (0); 136 137 hd->hp_ipl = LE_IPL(ler0->ler0_status); 138 lesc->sc_hd = hd; 139 140 return (1); 141 } 142 143 /* 144 * Interface exists: make available by filling in network interface 145 * record. System will initialize the interface when it is ready 146 * to accept packets. 147 */ 148 void 149 leattach(hd) 150 struct hp_device *hd; 151 { 152 register struct lereg0 *ler0; 153 struct le_softc *lesc = &le_softc[hd->hp_unit]; 154 struct am7990_softc *sc = &lesc->sc_am7990; 155 char *cp; 156 int i; 157 158 ler0 = lesc->sc_r0 = (struct lereg0 *)(lestd[0] + (int)hd->hp_addr); 159 ler0->ler0_id = 0xFF; 160 DELAY(100); 161 162 /* XXXX kluge for now */ 163 sc->sc_dev.dv_unit = hd->hp_unit; 164 sprintf(sc->sc_dev.dv_xname, "%s%d", le_cd.cd_name, hd->hp_unit); 165 hd->hp_dev.dv_class = DV_IFNET; 166 167 lesc->sc_r1 = (struct lereg1 *)(lestd[1] + (int)hd->hp_addr); 168 sc->sc_mem = (void *)(lestd[2] + (int)hd->hp_addr); 169 sc->sc_conf3 = LE_C3_BSWP; 170 sc->sc_addr = 0; 171 sc->sc_memsize = 16384; 172 173 /* 174 * Read the ethernet address off the board, one nibble at a time. 175 */ 176 cp = (char *)(lestd[3] + (int)hd->hp_addr); 177 for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++) { 178 sc->sc_arpcom.ac_enaddr[i] = (*++cp & 0xF) << 4; 179 cp++; 180 sc->sc_arpcom.ac_enaddr[i] |= *++cp & 0xF; 181 cp++; 182 } 183 184 sc->sc_copytodesc = am7990_copytobuf_contig; 185 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 186 sc->sc_copytobuf = am7990_copytobuf_contig; 187 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 188 sc->sc_zerobuf = am7990_zerobuf_contig; 189 190 sc->sc_rdcsr = lerdcsr; 191 sc->sc_wrcsr = lewrcsr; 192 sc->sc_hwinit = NULL; 193 194 am7990_config(sc); 195 196 /* Establish the interrupt handler. */ 197 isrlink(leintr, sc, hd->hp_ipl, ISRPRI_NET); 198 ler0->ler0_status = LE_IE; 199 } 200 201 int 202 leintr(arg) 203 void *arg; 204 { 205 struct am7990_softc *sc = arg; 206 u_int16_t isr; 207 208 #ifdef USELEDS 209 isr = lerdcsr(sc, LE_CSR0); 210 211 if ((isr & LE_C0_INTR) == 0) 212 return (0); 213 214 if (isr & LE_C0_RINT) 215 if (inledcontrol == 0) 216 ledcontrol(0, 0, LED_LANRCV); 217 218 if (isr & LE_C0_TINT) 219 if (inledcontrol == 0) 220 ledcontrol(0, 0, LED_LANXMT); 221 #endif /* USELEDS */ 222 223 return (am7990_intr(sc)); 224 } 225