if_le_ibus.c revision 1.7
1 1.7 thorpej /* $NetBSD: if_le_ibus.c,v 1.7 2002/10/02 04:15:09 thorpej 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 1.7 thorpej CFATTACH_DECL(le_pmax, sizeof(struct le_softc), 52 1.7 thorpej le_pmax_match, le_pmax_attach, NULL, NULL); 53 1.2 simonb 54 1.2 simonb int 55 1.2 simonb le_pmax_match(struct device *parent, struct cfdata *match, void *aux) 56 1.2 simonb { 57 1.2 simonb struct ibus_attach_args *d = aux; 58 1.2 simonb 59 1.2 simonb if (strcmp("lance", d->ia_name) != 0) 60 1.2 simonb return (0); 61 1.2 simonb return (1); 62 1.2 simonb } 63 1.2 simonb 64 1.2 simonb void 65 1.2 simonb le_pmax_attach(struct device *parent, struct device *self, void *aux) 66 1.2 simonb { 67 1.2 simonb struct le_softc *lesc = (void *)self; 68 1.2 simonb struct lance_softc *sc = &lesc->sc_am7990.lsc; 69 1.2 simonb u_char *cp; 70 1.2 simonb struct ibus_attach_args *ia = aux; 71 1.2 simonb 72 1.2 simonb /* 73 1.2 simonb * It's on the baseboard, with a dedicated interrupt line. 74 1.2 simonb */ 75 1.2 simonb lesc->sc_r1 = (struct lereg1 *)(ia->ia_addr); 76 1.2 simonb sc->sc_mem = (void *)MIPS_PHYS_TO_KSEG1(KN01_SYS_LANCE_B_START); 77 1.2 simonb cp = (u_char *)(MIPS_PHYS_TO_KSEG1(KN01_SYS_CLOCK) + 1); 78 1.2 simonb 79 1.2 simonb sc->sc_copytodesc = le_dec_copytobuf_gap2; 80 1.2 simonb sc->sc_copyfromdesc = le_dec_copyfrombuf_gap2; 81 1.2 simonb sc->sc_copytobuf = le_dec_copytobuf_gap2; 82 1.2 simonb sc->sc_copyfrombuf = le_dec_copyfrombuf_gap2; 83 1.2 simonb sc->sc_zerobuf = le_dec_zerobuf_gap2; 84 1.2 simonb 85 1.2 simonb dec_le_common_attach(&lesc->sc_am7990, cp); 86 1.2 simonb 87 1.2 simonb ibus_intr_establish(parent, (void*)ia->ia_cookie, IPL_NET, 88 1.2 simonb am7990_intr, sc); 89 1.2 simonb } 90 1.2 simonb 91 1.2 simonb /* 92 1.2 simonb * gap2: two bytes of data followed by two bytes of pad. 93 1.2 simonb * 94 1.2 simonb * Buffers must be 4-byte aligned. The code doesn't worry about 95 1.2 simonb * doing an extra byte. 96 1.2 simonb */ 97 1.2 simonb 98 1.2 simonb void 99 1.2 simonb le_dec_copytobuf_gap2(struct lance_softc *sc, void *fromv, int boff, int len) 100 1.2 simonb { 101 1.2 simonb volatile caddr_t buf = sc->sc_mem; 102 1.2 simonb caddr_t from = fromv; 103 1.2 simonb volatile u_int16_t *bptr; 104 1.2 simonb 105 1.2 simonb if (boff & 0x1) { 106 1.2 simonb /* handle unaligned first byte */ 107 1.2 simonb bptr = ((volatile u_int16_t *)buf) + (boff - 1); 108 1.2 simonb *bptr = (*from++ << 8) | (*bptr & 0xff); 109 1.2 simonb bptr += 2; 110 1.2 simonb len--; 111 1.2 simonb } else 112 1.2 simonb bptr = ((volatile u_int16_t *)buf) + boff; 113 1.2 simonb while (len > 1) { 114 1.2 simonb *bptr = (from[1] << 8) | (from[0] & 0xff); 115 1.2 simonb bptr += 2; 116 1.2 simonb from += 2; 117 1.2 simonb len -= 2; 118 1.2 simonb } 119 1.2 simonb if (len == 1) 120 1.2 simonb *bptr = (u_int16_t)*from; 121 1.2 simonb } 122 1.2 simonb 123 1.2 simonb void 124 1.2 simonb le_dec_copyfrombuf_gap2(struct lance_softc *sc, void *tov, int boff, int len) 125 1.2 simonb { 126 1.2 simonb volatile caddr_t buf = sc->sc_mem; 127 1.2 simonb caddr_t to = tov; 128 1.2 simonb volatile u_int16_t *bptr; 129 1.2 simonb u_int16_t tmp; 130 1.2 simonb 131 1.2 simonb if (boff & 0x1) { 132 1.2 simonb /* handle unaligned first byte */ 133 1.2 simonb bptr = ((volatile u_int16_t *)buf) + (boff - 1); 134 1.2 simonb *to++ = (*bptr >> 8) & 0xff; 135 1.2 simonb bptr += 2; 136 1.2 simonb len--; 137 1.2 simonb } else 138 1.2 simonb bptr = ((volatile u_int16_t *)buf) + boff; 139 1.2 simonb while (len > 1) { 140 1.2 simonb tmp = *bptr; 141 1.2 simonb *to++ = tmp & 0xff; 142 1.2 simonb *to++ = (tmp >> 8) & 0xff; 143 1.2 simonb bptr += 2; 144 1.2 simonb len -= 2; 145 1.2 simonb } 146 1.2 simonb if (len == 1) 147 1.2 simonb *to = *bptr & 0xff; 148 1.2 simonb } 149 1.2 simonb 150 1.2 simonb static void 151 1.2 simonb le_dec_zerobuf_gap2(struct lance_softc *sc, int boff, int len) 152 1.2 simonb { 153 1.2 simonb volatile caddr_t buf = sc->sc_mem; 154 1.2 simonb volatile u_int16_t *bptr; 155 1.2 simonb 156 1.2 simonb if ((unsigned)boff & 0x1) { 157 1.2 simonb bptr = ((volatile u_int16_t *)buf) + (boff - 1); 158 1.2 simonb *bptr &= 0xff; 159 1.2 simonb bptr += 2; 160 1.2 simonb len--; 161 1.2 simonb } else 162 1.2 simonb bptr = ((volatile u_int16_t *)buf) + boff; 163 1.2 simonb while (len > 0) { 164 1.2 simonb *bptr = 0; 165 1.2 simonb bptr += 2; 166 1.2 simonb len -= 2; 167 1.2 simonb } 168 1.2 simonb } 169
Indexes created Fri Sep 26 20:09:58 GMT 2025