if_le_ibus.c revision 1.3
1 1.3 chs /* $NetBSD: if_le_ibus.c,v 1.3 2002/01/08 17:10:28 chs Exp $ */ 2 1.2 simonb 3 1.2 simonb /* 4 1.2 simonb * Copyright 1996 The Board of Trustees of The Leland Stanford 5 1.2 simonb * Junior University. All Rights Reserved. 6 1.2 simonb * 7 1.2 simonb * Permission to use, copy, modify, and distribute this 8 1.2 simonb * software and its documentation for any purpose and without 9 1.2 simonb * fee is hereby granted, provided that the above copyright 10 1.2 simonb * notice appear in all copies. Stanford University 11 1.2 simonb * makes no representations about the suitability of this 12 1.2 simonb * software for any purpose. It is provided "as is" without 13 1.2 simonb * express or implied warranty. 14 1.2 simonb * 15 1.2 simonb * This driver was contributed by Jonathan Stone. 16 1.2 simonb */ 17 1.2 simonb 18 1.2 simonb /* 19 1.2 simonb * LANCE on Decstation kn01/kn220(?) baseboard. 20 1.2 simonb */ 21 1.2 simonb #include "opt_inet.h" 22 1.2 simonb 23 1.2 simonb #include <sys/param.h> 24 1.2 simonb #include <sys/socket.h> 25 1.3 chs #include <sys/systm.h> 26 1.2 simonb 27 1.2 simonb #include <net/if.h> 28 1.2 simonb #include <net/if_ether.h> 29 1.2 simonb #include <net/if_media.h> 30 1.2 simonb 31 1.2 simonb #ifdef INET 32 1.2 simonb #include <netinet/in.h> 33 1.2 simonb #include <netinet/if_inarp.h> 34 1.2 simonb #endif 35 1.2 simonb 36 1.2 simonb #include <dev/ic/lancevar.h> 37 1.2 simonb #include <dev/ic/am7990var.h> 38 1.2 simonb 39 1.2 simonb #include <dev/tc/if_levar.h> 40 1.2 simonb #include <pmax/ibus/ibusvar.h> 41 1.2 simonb #include <pmax/pmax/kn01.h> 42 1.2 simonb 43 1.2 simonb static void le_dec_copyfrombuf_gap2(struct lance_softc *, void *, int, int); 44 1.2 simonb static void le_dec_copytobuf_gap2(struct lance_softc *, void *, int, int); 45 1.2 simonb static void le_dec_zerobuf_gap2(struct lance_softc *, int, int); 46 1.2 simonb 47 1.2 simonb 48 1.2 simonb static int le_pmax_match(struct device *, struct cfdata *, void *); 49 1.2 simonb static void le_pmax_attach(struct device *, struct device *, void *); 50 1.2 simonb 51 1.2 simonb struct cfattach le_pmax_ca = { 52 1.2 simonb sizeof(struct le_softc), le_pmax_match, le_pmax_attach 53 1.2 simonb }; 54 1.2 simonb extern struct cfdriver ibus_cd; 55 1.2 simonb 56 1.2 simonb int 57 1.2 simonb le_pmax_match(struct device *parent, struct cfdata *match, void *aux) 58 1.2 simonb { 59 1.2 simonb struct ibus_attach_args *d = aux; 60 1.2 simonb 61 1.2 simonb if (parent->dv_cfdata->cf_driver != &ibus_cd) 62 1.2 simonb return (0); 63 1.2 simonb 64 1.2 simonb if (strcmp("lance", d->ia_name) != 0) 65 1.2 simonb return (0); 66 1.2 simonb return (1); 67 1.2 simonb } 68 1.2 simonb 69 1.2 simonb void 70 1.2 simonb le_pmax_attach(struct device *parent, struct device *self, void *aux) 71 1.2 simonb { 72 1.2 simonb struct le_softc *lesc = (void *)self; 73 1.2 simonb struct lance_softc *sc = &lesc->sc_am7990.lsc; 74 1.2 simonb u_char *cp; 75 1.2 simonb struct ibus_attach_args *ia = aux; 76 1.2 simonb 77 1.2 simonb /* 78 1.2 simonb * It's on the baseboard, with a dedicated interrupt line. 79 1.2 simonb */ 80 1.2 simonb lesc->sc_r1 = (struct lereg1 *)(ia->ia_addr); 81 1.2 simonb sc->sc_mem = (void *)MIPS_PHYS_TO_KSEG1(KN01_SYS_LANCE_B_START); 82 1.2 simonb cp = (u_char *)(MIPS_PHYS_TO_KSEG1(KN01_SYS_CLOCK) + 1); 83 1.2 simonb 84 1.2 simonb sc->sc_copytodesc = le_dec_copytobuf_gap2; 85 1.2 simonb sc->sc_copyfromdesc = le_dec_copyfrombuf_gap2; 86 1.2 simonb sc->sc_copytobuf = le_dec_copytobuf_gap2; 87 1.2 simonb sc->sc_copyfrombuf = le_dec_copyfrombuf_gap2; 88 1.2 simonb sc->sc_zerobuf = le_dec_zerobuf_gap2; 89 1.2 simonb 90 1.2 simonb dec_le_common_attach(&lesc->sc_am7990, cp); 91 1.2 simonb 92 1.2 simonb ibus_intr_establish(parent, (void*)ia->ia_cookie, IPL_NET, 93 1.2 simonb am7990_intr, sc); 94 1.2 simonb } 95 1.2 simonb 96 1.2 simonb /* 97 1.2 simonb * gap2: two bytes of data followed by two bytes of pad. 98 1.2 simonb * 99 1.2 simonb * Buffers must be 4-byte aligned. The code doesn't worry about 100 1.2 simonb * doing an extra byte. 101 1.2 simonb */ 102 1.2 simonb 103 1.2 simonb void 104 1.2 simonb le_dec_copytobuf_gap2(struct lance_softc *sc, void *fromv, int boff, int len) 105 1.2 simonb { 106 1.2 simonb volatile caddr_t buf = sc->sc_mem; 107 1.2 simonb caddr_t from = fromv; 108 1.2 simonb volatile u_int16_t *bptr; 109 1.2 simonb 110 1.2 simonb if (boff & 0x1) { 111 1.2 simonb /* handle unaligned first byte */ 112 1.2 simonb bptr = ((volatile u_int16_t *)buf) + (boff - 1); 113 1.2 simonb *bptr = (*from++ << 8) | (*bptr & 0xff); 114 1.2 simonb bptr += 2; 115 1.2 simonb len--; 116 1.2 simonb } else 117 1.2 simonb bptr = ((volatile u_int16_t *)buf) + boff; 118 1.2 simonb while (len > 1) { 119 1.2 simonb *bptr = (from[1] << 8) | (from[0] & 0xff); 120 1.2 simonb bptr += 2; 121 1.2 simonb from += 2; 122 1.2 simonb len -= 2; 123 1.2 simonb } 124 1.2 simonb if (len == 1) 125 1.2 simonb *bptr = (u_int16_t)*from; 126 1.2 simonb } 127 1.2 simonb 128 1.2 simonb void 129 1.2 simonb le_dec_copyfrombuf_gap2(struct lance_softc *sc, void *tov, int boff, int len) 130 1.2 simonb { 131 1.2 simonb volatile caddr_t buf = sc->sc_mem; 132 1.2 simonb caddr_t to = tov; 133 1.2 simonb volatile u_int16_t *bptr; 134 1.2 simonb u_int16_t tmp; 135 1.2 simonb 136 1.2 simonb if (boff & 0x1) { 137 1.2 simonb /* handle unaligned first byte */ 138 1.2 simonb bptr = ((volatile u_int16_t *)buf) + (boff - 1); 139 1.2 simonb *to++ = (*bptr >> 8) & 0xff; 140 1.2 simonb bptr += 2; 141 1.2 simonb len--; 142 1.2 simonb } else 143 1.2 simonb bptr = ((volatile u_int16_t *)buf) + boff; 144 1.2 simonb while (len > 1) { 145 1.2 simonb tmp = *bptr; 146 1.2 simonb *to++ = tmp & 0xff; 147 1.2 simonb *to++ = (tmp >> 8) & 0xff; 148 1.2 simonb bptr += 2; 149 1.2 simonb len -= 2; 150 1.2 simonb } 151 1.2 simonb if (len == 1) 152 1.2 simonb *to = *bptr & 0xff; 153 1.2 simonb } 154 1.2 simonb 155 1.2 simonb static void 156 1.2 simonb le_dec_zerobuf_gap2(struct lance_softc *sc, int boff, int len) 157 1.2 simonb { 158 1.2 simonb volatile caddr_t buf = sc->sc_mem; 159 1.2 simonb volatile u_int16_t *bptr; 160 1.2 simonb 161 1.2 simonb if ((unsigned)boff & 0x1) { 162 1.2 simonb bptr = ((volatile u_int16_t *)buf) + (boff - 1); 163 1.2 simonb *bptr &= 0xff; 164 1.2 simonb bptr += 2; 165 1.2 simonb len--; 166 1.2 simonb } else 167 1.2 simonb bptr = ((volatile u_int16_t *)buf) + boff; 168 1.2 simonb while (len > 0) { 169 1.2 simonb *bptr = 0; 170 1.2 simonb bptr += 2; 171 1.2 simonb len -= 2; 172 1.2 simonb } 173 1.2 simonb } 174
Indexes created Thu Sep 25 16:09:42 GMT 2025