/* $OpenBSD: if_le_ibus.c,v 1.2 1997/11/07 08:07:48 niklas Exp $ */ /* $NetBSD: if_le_ibus.c,v 1.3 1996/05/20 23:19:16 jonathan Exp $ */ /* * Copyright 1996 The Board of Trustees of The Leland Stanford * Junior University. All Rights Reserved. * * Permission to use, copy, modify, and distribute this * software and its documentation for any purpose and without * fee is hereby granted, provided that the above copyright * notice appear in all copies. Stanford University * makes no representations about the suitability of this * software for any purpose. It is provided "as is" without * express or implied warranty. * * This driver was contributed by Jonathan Stone. */ /* * LANCE on Decstation kn01/kn220(?) baseboard. */ #include #include #include #include #include #include #include #ifdef INET #include #include #endif #include #include #include #include #include #include #include extern struct cfdriver mainbus_cd; /* should be in header but where? */ extern void le_dec_copytobuf_gap2 __P((struct am7990_softc *, void *, int, int)); extern void le_dec_copyfrombuf_gap2 __P((struct am7990_softc *, void *, int, int)); hide void le_dec_zerobuf_gap2 __P((struct am7990_softc *, int, int)); int le_pmax_match __P((struct device *, void *, void *)); void le_pmax_attach __P((struct device *, struct device *, void *)); struct cfattach le_pmax_ca = { sizeof(struct le_softc), le_pmax_match, le_pmax_attach }; int le_pmax_match(parent, match, aux) struct device *parent; void *match, *aux; { if (parent->dv_cfdata->cf_driver == &mainbus_cd) { struct confargs *d = aux; if (strcmp("lance", d->ca_name) == 0) return (1); } return (0); } void le_pmax_attach(parent, self, aux) struct device *parent, *self; void *aux; { register struct le_softc *lesc = (void *)self; register struct am7990_softc *sc = &lesc->sc_am7990; register u_char *cp; register struct confargs *ca = aux; /* * It's on the baseboard, with a dedicated interrupt line. */ lesc->sc_r1 = (struct lereg1 *)(ca->ca_addr); /*XXX*/ sc->sc_mem = (void *)TC_PHYS_TO_UNCACHED(0x19000000); /*XXX*/ cp = (u_char *)(TC_PHYS_TO_UNCACHED(KN01_SYS_CLOCK) + 1); sc->sc_copytodesc = le_dec_copytobuf_gap2; sc->sc_copyfromdesc = le_dec_copyfrombuf_gap2; sc->sc_copytobuf = le_dec_copytobuf_gap2; sc->sc_copyfrombuf = le_dec_copyfrombuf_gap2; sc->sc_zerobuf = le_dec_zerobuf_gap2; dec_le_common_attach(sc, cp); /* XXX more thought about ca->slotpri */ kn01_intr_establish(parent, (void*)ca->ca_slotpri, TC_IPL_NET, am7990_intr, sc); } /* * gap2: two bytes of data followed by two bytes of pad. * * Buffers must be 4-byte aligned. The code doesn't worry about * doing an extra byte. */ void le_dec_copytobuf_gap2(sc, fromv, boff, len) struct am7990_softc *sc; void *fromv; int boff; register int len; { volatile caddr_t buf = sc->sc_mem; register caddr_t from = fromv; register volatile u_int16_t *bptr; if (boff & 0x1) { /* handle unaligned first byte */ bptr = ((volatile u_int16_t *)buf) + (boff - 1); *bptr = (*from++ << 8) | (*bptr & 0xff); bptr += 2; len--; } else bptr = ((volatile u_int16_t *)buf) + boff; while (len > 1) { *bptr = (from[1] << 8) | (from[0] & 0xff); bptr += 2; from += 2; len -= 2; } if (len == 1) *bptr = (u_int16_t)*from; } void le_dec_copyfrombuf_gap2(sc, tov, boff, len) struct am7990_softc *sc; void *tov; int boff, len; { volatile caddr_t buf = sc->sc_mem; register caddr_t to = tov; register volatile u_int16_t *bptr; register u_int16_t tmp; if (boff & 0x1) { /* handle unaligned first byte */ bptr = ((volatile u_int16_t *)buf) + (boff - 1); *to++ = (*bptr >> 8) & 0xff; bptr += 2; len--; } else bptr = ((volatile u_int16_t *)buf) + boff; while (len > 1) { tmp = *bptr; *to++ = tmp & 0xff; *to++ = (tmp >> 8) & 0xff; bptr += 2; len -= 2; } if (len == 1) *to = *bptr & 0xff; } void le_dec_zerobuf_gap2(sc, boff, len) struct am7990_softc *sc; int boff, len; { volatile caddr_t buf = sc->sc_mem; register volatile u_int16_t *bptr; if ((unsigned)boff & 0x1) { bptr = ((volatile u_int16_t *)buf) + (boff - 1); *bptr &= 0xff; bptr += 2; len--; } else bptr = ((volatile u_int16_t *)buf) + boff; while (len > 0) { *bptr = 0; bptr += 2; len -= 2; } }