sync 0521

1 files changed, 191 insertions, 0 deletions

diff --git a/sys/dev/tc/if_le_ibus.c b/sys/dev/tc/if_le_ibus.c
new file mode 100644
index 00000000000..904e472bcf9
--- /dev/null
+++ b/sys/dev/tc/if_le_ibus.c
@@ -0,0 +1,191 @@
+/*	$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 <sys/param.h>
+#include <sys/systm.h>
+#include <sys/mbuf.h>
+#include <sys/syslog.h>
+#include <sys/socket.h>
+#include <sys/device.h>
+
+#include <net/if.h>
+
+#ifdef INET
+#include <netinet/in.h>
+#include <netinet/if_ether.h>
+#endif
+
+#include <dev/ic/am7990reg.h>
+#include <dev/ic/am7990var.h>
+
+#include <dev/tc/if_levar.h>
+#include <dev/tc/tcvar.h>
+#include <machine/autoconf.h>
+#include <pmax/pmax/kn01.h>
+#include <pmax/pmax/kn01var.h>
+
+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;
+	}
+}