/* $OpenBSD: if_le_ioasic.c,v 1.4 1998/09/16 22:41:22 jason Exp $ */ /* $NetBSD: if_le_ioasic.c,v 1.2 1996/05/07 02:24:56 thorpej Exp $ */ /* * Copyright (c) 1996 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ /* * LANCE on DEC IOCTL ASIC. */ #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #include #include #include #include #include extern caddr_t le_iomem; int le_ioasic_match __P((struct device *, void *, void *)); void le_ioasic_attach __P((struct device *, struct device *, void *)); hide void le_ioasic_copytobuf_gap2 __P((struct am7990_softc *, void *, int, int)); hide void le_ioasic_copyfrombuf_gap2 __P((struct am7990_softc *, void *, int, int)); hide void le_ioasic_copytobuf_gap16 __P((struct am7990_softc *, void *, int, int)); hide void le_ioasic_copyfrombuf_gap16 __P((struct am7990_softc *, void *, int, int)); hide void le_ioasic_zerobuf_gap16 __P((struct am7990_softc *, int, int)); struct cfattach le_ioasic_ca = { sizeof(struct le_softc), le_ioasic_match, le_ioasic_attach }; int le_ioasic_match(parent, match, aux) struct device *parent; void *match, *aux; { struct ioasicdev_attach_args *d = aux; if (!ioasic_submatch(match, aux)) return (0); if (strncmp("lance", d->iada_modname, TC_ROM_LLEN)) return (0); return (1); } void le_ioasic_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct ioasicdev_attach_args *d = aux; register struct le_softc *lesc = (void *)self; register struct am7990_softc *sc = &lesc->sc_am7990; lesc->sc_r1 = (struct lereg1 *) TC_DENSE_TO_SPARSE(TC_PHYS_TO_UNCACHED(d->iada_addr)); sc->sc_mem = (void *)TC_PHYS_TO_UNCACHED(le_iomem); sc->sc_copytodesc = le_ioasic_copytobuf_gap2; sc->sc_copyfromdesc = le_ioasic_copyfrombuf_gap2; sc->sc_copytobuf = le_ioasic_copytobuf_gap16; sc->sc_copyfrombuf = le_ioasic_copyfrombuf_gap16; sc->sc_zerobuf = le_ioasic_zerobuf_gap16; ioasic_lance_dma_setup(le_iomem); /* XXX more thought */ dec_le_common_attach(sc, ioasic_lance_ether_address()); ioasic_intr_establish(parent, d->iada_cookie, TC_IPL_NET, am7990_intr, sc); } /* * Special memory access functions needed by ioasic-attached LANCE * chips. */ /* * 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_ioasic_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_ioasic_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; } /* * gap16: 16 bytes of data followed by 16 bytes of pad. * * Buffers must be 32-byte aligned. */ void le_ioasic_copytobuf_gap16(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 caddr_t bptr; register int xfer; bptr = buf + ((boff << 1) & ~0x1f); boff &= 0xf; xfer = min(len, 16 - boff); while (len > 0) { bcopy(from, bptr + boff, xfer); from += xfer; bptr += 32; boff = 0; len -= xfer; xfer = min(len, 16); } } void le_ioasic_copyfrombuf_gap16(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 caddr_t bptr; register int xfer; bptr = buf + ((boff << 1) & ~0x1f); boff &= 0xf; xfer = min(len, 16 - boff); while (len > 0) { bcopy(bptr + boff, to, xfer); to += xfer; bptr += 32; boff = 0; len -= xfer; xfer = min(len, 16); } } void le_ioasic_zerobuf_gap16(sc, boff, len) struct am7990_softc *sc; int boff, len; { volatile caddr_t buf = sc->sc_mem; register caddr_t bptr; register int xfer; bptr = buf + ((boff << 1) & ~0x1f); boff &= 0xf; xfer = min(len, 16 - boff); while (len > 0) { bzero(bptr + boff, xfer); bptr += 32; boff = 0; len -= xfer; xfer = min(len, 16); } }