if_le_ibus.c revision 1.2
1 1.2 simonb /* $NetBSD: if_le_ibus.c,v 1.2 2001/10/01 11:42:18 simonb 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 1.2 simonb 26 1.2 simonb #include <net/if.h> 27 1.2 simonb #include <net/if_ether.h> 28 1.2 simonb #include <net/if_media.h> 29 1.2 simonb 30 1.2 simonb #ifdef INET 31 1.2 simonb #include <netinet/in.h> 32 1.2 simonb #include <netinet/if_inarp.h> 33 1.2 simonb #endif 34 1.2 simonb 35 1.2 simonb #include <dev/ic/lancevar.h> 36 1.2 simonb #include <dev/ic/am7990var.h> 37 1.2 simonb 38 1.2 simonb #include <dev/tc/if_levar.h> 39 1.2 simonb #include <pmax/ibus/ibusvar.h> 40 1.2 simonb #include <pmax/pmax/kn01.h> 41 1.2 simonb 42 1.2 simonb static void le_dec_copyfrombuf_gap2(struct lance_softc *, void *, int, int); 43 1.2 simonb static void le_dec_copytobuf_gap2(struct lance_softc *, void *, int, int); 44 1.2 simonb static void le_dec_zerobuf_gap2(struct lance_softc *, int, int); 45 1.2 simonb 46 1.2 simonb 47 1.2 simonb static int le_pmax_match(struct device *, struct cfdata *, void *); 48 1.2 simonb static void le_pmax_attach(struct device *, struct device *, void *); 49 1.2 simonb 50 1.2 simonb struct cfattach le_pmax_ca = { 51 1.2 simonb sizeof(struct le_softc), le_pmax_match, le_pmax_attach 52 1.2 simonb }; 53 1.2 simonb extern struct cfdriver ibus_cd; 54 1.2 simonb 55 1.2 simonb int 56 1.2 simonb le_pmax_match(struct device *parent, struct cfdata *match, void *aux) 57 1.2 simonb { 58 1.2 simonb struct ibus_attach_args *d = aux; 59 1.2 simonb 60 1.2 simonb if (parent->dv_cfdata->cf_driver != &ibus_cd) 61 1.2 simonb return (0); 62 1.2 simonb 63 1.2 simonb if (strcmp("lance", d->ia_name) != 0) 64 1.2 simonb return (0); 65 1.2 simonb return (1); 66 1.2 simonb } 67 1.2 simonb 68 1.2 simonb void 69 1.2 simonb le_pmax_attach(struct device *parent, struct device *self, void *aux) 70 1.2 simonb { 71 1.2 simonb struct le_softc *lesc = (void *)self; 72 1.2 simonb struct lance_softc *sc = &lesc->sc_am7990.lsc; 73 1.2 simonb u_char *cp; 74 1.2 simonb struct ibus_attach_args *ia = aux; 75 1.2 simonb 76 1.2 simonb /* 77 1.2 simonb * It's on the baseboard, with a dedicated interrupt line. 78 1.2 simonb */ 79 1.2 simonb lesc->sc_r1 = (struct lereg1 *)(ia->ia_addr); 80 1.2 simonb sc->sc_mem = (void *)MIPS_PHYS_TO_KSEG1(KN01_SYS_LANCE_B_START); 81 1.2 simonb cp = (u_char *)(MIPS_PHYS_TO_KSEG1(KN01_SYS_CLOCK) + 1); 82 1.2 simonb 83 1.2 simonb sc->sc_copytodesc = le_dec_copytobuf_gap2; 84 1.2 simonb sc->sc_copyfromdesc = le_dec_copyfrombuf_gap2; 85 1.2 simonb sc->sc_copytobuf = le_dec_copytobuf_gap2; 86 1.2 simonb sc->sc_copyfrombuf = le_dec_copyfrombuf_gap2; 87 1.2 simonb sc->sc_zerobuf = le_dec_zerobuf_gap2; 88 1.2 simonb 89 1.2 simonb dec_le_common_attach(&lesc->sc_am7990, cp); 90 1.2 simonb 91 1.2 simonb ibus_intr_establish(parent, (void*)ia->ia_cookie, IPL_NET, 92 1.2 simonb am7990_intr, sc); 93 1.2 simonb } 94 1.2 simonb 95 1.2 simonb /* 96 1.2 simonb * gap2: two bytes of data followed by two bytes of pad. 97 1.2 simonb * 98 1.2 simonb * Buffers must be 4-byte aligned. The code doesn't worry about 99 1.2 simonb * doing an extra byte. 100 1.2 simonb */ 101 1.2 simonb 102 1.2 simonb void 103 1.2 simonb le_dec_copytobuf_gap2(struct lance_softc *sc, void *fromv, int boff, int len) 104 1.2 simonb { 105 1.2 simonb volatile caddr_t buf = sc->sc_mem; 106 1.2 simonb caddr_t from = fromv; 107 1.2 simonb volatile u_int16_t *bptr; 108 1.2 simonb 109 1.2 simonb if (boff & 0x1) { 110 1.2 simonb /* handle unaligned first byte */ 111 1.2 simonb bptr = ((volatile u_int16_t *)buf) + (boff - 1); 112 1.2 simonb *bptr = (*from++ << 8) | (*bptr & 0xff); 113 1.2 simonb bptr += 2; 114 1.2 simonb len--; 115 1.2 simonb } else 116 1.2 simonb bptr = ((volatile u_int16_t *)buf) + boff; 117 1.2 simonb while (len > 1) { 118 1.2 simonb *bptr = (from[1] << 8) | (from[0] & 0xff); 119 1.2 simonb bptr += 2; 120 1.2 simonb from += 2; 121 1.2 simonb len -= 2; 122 1.2 simonb } 123 1.2 simonb if (len == 1) 124 1.2 simonb *bptr = (u_int16_t)*from; 125 1.2 simonb } 126 1.2 simonb 127 1.2 simonb void 128 1.2 simonb le_dec_copyfrombuf_gap2(struct lance_softc *sc, void *tov, int boff, int len) 129 1.2 simonb { 130 1.2 simonb volatile caddr_t buf = sc->sc_mem; 131 1.2 simonb caddr_t to = tov; 132 1.2 simonb volatile u_int16_t *bptr; 133 1.2 simonb u_int16_t tmp; 134 1.2 simonb 135 1.2 simonb if (boff & 0x1) { 136 1.2 simonb /* handle unaligned first byte */ 137 1.2 simonb bptr = ((volatile u_int16_t *)buf) + (boff - 1); 138 1.2 simonb *to++ = (*bptr >> 8) & 0xff; 139 1.2 simonb bptr += 2; 140 1.2 simonb len--; 141 1.2 simonb } else 142 1.2 simonb bptr = ((volatile u_int16_t *)buf) + boff; 143 1.2 simonb while (len > 1) { 144 1.2 simonb tmp = *bptr; 145 1.2 simonb *to++ = tmp & 0xff; 146 1.2 simonb *to++ = (tmp >> 8) & 0xff; 147 1.2 simonb bptr += 2; 148 1.2 simonb len -= 2; 149 1.2 simonb } 150 1.2 simonb if (len == 1) 151 1.2 simonb *to = *bptr & 0xff; 152 1.2 simonb } 153 1.2 simonb 154 1.2 simonb static void 155 1.2 simonb le_dec_zerobuf_gap2(struct lance_softc *sc, int boff, int len) 156 1.2 simonb { 157 1.2 simonb volatile caddr_t buf = sc->sc_mem; 158 1.2 simonb volatile u_int16_t *bptr; 159 1.2 simonb 160 1.2 simonb if ((unsigned)boff & 0x1) { 161 1.2 simonb bptr = ((volatile u_int16_t *)buf) + (boff - 1); 162 1.2 simonb *bptr &= 0xff; 163 1.2 simonb bptr += 2; 164 1.2 simonb len--; 165 1.2 simonb } else 166 1.2 simonb bptr = ((volatile u_int16_t *)buf) + boff; 167 1.2 simonb while (len > 0) { 168 1.2 simonb *bptr = 0; 169 1.2 simonb bptr += 2; 170 1.2 simonb len -= 2; 171 1.2 simonb } 172 1.2 simonb } 173
Indexes created Fri Sep 26 20:09:58 GMT 2025