Token ring driver for Tropic based boards; from NetBSD.

This is as is in NetBSD. I've some mods in my tree ready to be merged.

For the records:
* This driver needs massive work to be ready for production (people is
invited to help, don't be shy). Rewrite part/whole is my list.
* IP isn't working at the moment. ARP handling needs several changes.
(remember this guys? maybe this time...)
* This only handle SNAP frames. IPX using IPX frames doesn't work (you
could receive but not transmit to be exact). In order to do that, dsap
needs to be changed. I don't know how to setup multiple dsap's at the
moment (don't worry about it now, our IPX code is going to be replaced
soon since the current implementation is buggy).
* Source routing is missing.
* tcpdump needs some hacking too (in my tree too).
* More things I'm probably forgetting now (haven't worked on this for
a while).

  Our networking code needs some cleanup and rearrangement (specially
the headers). net/if_ether.h is an example; arp is not ether specific.

1 files changed, 256 insertions, 0 deletions

diff --git a/sys/dev/isa/if_tr_isa.c b/sys/dev/isa/if_tr_isa.c
new file mode 100644
index 00000000000..bfd9bcfe485
--- /dev/null
+++ b/sys/dev/isa/if_tr_isa.c
@@ -0,0 +1,256 @@
+/*	$OpenBSD: if_tr_isa.c,v 1.1 1999/12/27 21:51:35 fgsch Exp $	*/
+/*	$NetBSD: if_tr_isa.c,v 1.4 1999/04/30 15:29:24 bad Exp $	*/
+
+#undef TRISADEBUG
+/*
+ * Copyright (c) 1999 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Onno van der Linden.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by The NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its 
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/socket.h>
+#include <sys/device.h>
+
+#include <net/if.h>
+#include <net/if_media.h>
+#include <netinet/in.h>
+#include <netinet/if_ether.h>
+
+#include <machine/cpu.h>
+#include <machine/bus.h>
+#include <machine/intr.h>
+
+#include <dev/isa/isavar.h>
+
+#include <dev/ic/tropicreg.h>
+#include <dev/ic/tropicvar.h>
+
+
+int	tr_isa_probe __P((struct device *, void *, void *));
+int	trtcm_isa_probe __P((struct device *, void *, void *));
+int	tribm_isa_probe __P((struct device *, void *, void *));
+void	tr_isa_attach __P((struct device *, struct device *, void *));
+int	tr_isa_map_io __P((struct isa_attach_args *, bus_space_handle_t *,
+	    bus_space_handle_t *));
+void	tr_isa_unmap_io __P((struct isa_attach_args *, bus_space_handle_t,
+	    bus_space_handle_t));
+int	trtcm_isa_mediachange __P((struct tr_softc *));
+void	trtcm_isa_mediastatus __P((struct tr_softc *, struct ifmediareq *));
+#ifdef TRISADEBUG
+void	tr_isa_dumpaip __P((bus_space_tag_t, bus_space_handle_t));
+#endif
+
+/*
+ * List of manufacturer specific probe routines.  Order is important.
+ */
+int	(*tr_isa_probe_list[])(struct device *, void *, void *) = {
+		trtcm_isa_probe,
+		tribm_isa_probe,
+		0
+	};
+
+struct cfattach tr_isa_ca = {
+	sizeof(struct tr_softc), tr_isa_probe, tr_isa_attach
+};
+
+int
+tr_isa_map_io(ia, pioh, mmioh)
+struct isa_attach_args *ia;
+bus_space_handle_t *pioh, *mmioh;
+{
+	bus_size_t mmio;
+	u_int8_t s;
+
+	if (bus_space_map(ia->ia_iot, ia->ia_iobase, ia->ia_iosize, 0, pioh)) {
+		printf("tr_isa_map_io: can't map PIO ports\n");
+		return 1;
+	}
+
+	/* Read adapter switches and calculate addresses of MMIO. */
+	s = bus_space_read_1(ia->ia_iot, *pioh, TR_SWITCH);
+
+	if ((s & 0xfc) < ((TR_MMIO_MINADDR - TR_MMIO_OFFSET) >> 11) ||
+	    (s & 0xfc) > ((TR_MMIO_MAXADDR - TR_MMIO_OFFSET) >> 11)) {
+		bus_space_unmap(ia->ia_iot, *pioh, ia->ia_iosize);
+		return 1;
+	}
+
+	mmio = ((s & 0xfc) << 11) + TR_MMIO_OFFSET;
+	if (bus_space_map(ia->ia_memt, mmio, TR_MMIO_SIZE, 0, mmioh)) {
+		printf("tr_isa_map_io: can't map MMIO region 0x%05lx/%d\n",
+			mmio, TR_MMIO_SIZE);
+		bus_space_unmap(ia->ia_iot, *pioh, ia->ia_iosize);
+		return 1;
+	}
+	return 0;
+}
+
+void
+tr_isa_unmap_io(ia, pioh, mmioh)
+struct isa_attach_args *ia;
+bus_space_handle_t pioh, mmioh;
+{
+	bus_space_unmap(ia->ia_memt, mmioh, TR_MMIO_SIZE);
+	bus_space_unmap(ia->ia_iot, pioh, ia->ia_iosize);
+}
+
+static u_char tr_isa_id[] = {
+	5, 0, 4, 9, 4, 3, 4, 15, 3, 6, 3, 1, 3, 1, 3, 0, 3, 9, 3, 9, 3, 0, 2, 0
+};
+
+/*
+ * XXX handle multiple IBM TR cards (sram mapping !!)
+ */
+
+int
+tr_isa_probe(parent, match, aux)
+	struct device *parent;
+	void *match, *aux;
+{
+	struct isa_attach_args *ia = aux;
+	int	i;
+	bus_size_t	tr_id;
+	bus_space_handle_t sramh, pioh, mmioh;
+	int probecode;
+	int matched = 0;
+
+	for (i = 0; tr_isa_probe_list[i] != 0; i++) {
+		probecode = tr_isa_probe_list[i](parent, match, aux);
+		if (probecode < 0)
+			return 0;	/* Fail instantly. */
+		if (probecode > 0)
+			break;		/* We have a match. */
+	}
+	if (tr_isa_probe_list[i] == 0)
+		return 0;		/* Nothing matched. */
+	if (tr_isa_map_io(ia, &pioh, &mmioh))
+		return 0;
+	tr_id = TR_ID_OFFSET;
+	matched = 1;
+	for (i = 0; i < sizeof(tr_isa_id); i++) {
+		if (bus_space_read_1(ia->ia_memt, mmioh, tr_id) !=
+		    tr_isa_id[i])
+			matched = 0;
+		tr_id += 2;
+	}
+#ifdef TRISADEBUG
+	tr_isa_dumpaip(ia->ia_memt, mmioh);
+#endif
+	tr_isa_unmap_io(ia, pioh, mmioh);
+	if (!matched) {
+		return 0;
+	}
+	if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 0, &sramh)) {
+		printf("tr_isa_probe: can't map shared ram\n");
+		return 0;
+	}
+	bus_space_unmap(ia->ia_memt, sramh, ia->ia_msize);
+	return 1;
+}
+
+int trtcm_setspeed(struct tr_softc *, int);
+
+void
+tr_isa_attach(parent, self, aux)
+	struct device *parent, *self;
+	void	*aux;
+{
+	struct tr_softc *sc = (void *) self;
+	struct isa_attach_args *ia = aux;
+
+	sc->sc_piot = ia->ia_iot;
+	sc->sc_memt = ia->ia_memt;
+	if (tr_isa_map_io(ia, &sc->sc_pioh, &sc->sc_mmioh)) {
+		printf("tr_isa_attach: IO space vanished\n");
+		return;
+	}
+	if (bus_space_map(sc->sc_memt, ia->ia_maddr, ia->ia_msize, 0,
+	    &sc->sc_sramh)) {
+		printf("tr_isa_attach: shared ram space vanished\n");
+		return;
+	}
+	/* set ACA offset */
+	sc->sc_aca = TR_ACA_OFFSET;
+	sc->sc_memwinsz = ia->ia_msize;
+	sc->sc_maddr = ia->ia_maddr;
+	/*
+	 * Determine total RAM on adapter and decide how much to use.
+	 * XXX Since we don't use RAM paging, use sc_memwinsz for now.
+	 */
+	sc->sc_memsize = sc->sc_memwinsz;
+	sc->sc_memreserved = 0;
+
+	if (tr_reset(sc) != 0)
+		return;
+
+	if (ia->ia_aux != NULL) {
+		sc->sc_mediastatus = trtcm_isa_mediastatus;
+		sc->sc_mediachange = trtcm_isa_mediachange;
+	}
+	else {
+		sc->sc_mediastatus = NULL;
+		sc->sc_mediachange = NULL;
+	}
+
+	if (tr_attach(sc) != 0)
+		return;
+
+/*
+ * XXX 3Com 619 can use LEVEL intr
+ */
+	sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
+	    IPL_NET, tr_intr, sc, sc->sc_dev.dv_xname);
+}
+
+#ifdef TRISADEBUG
+/*
+ * Dump the adapters AIP
+ */
+void
+tr_isa_dumpaip(memt, mmioh)
+	bus_space_tag_t memt;
+	bus_space_handle_t mmioh;
+{
+	unsigned int off, val;
+	printf("AIP contents:");
+	for (off=0; off < 256; off++) {
+		val = bus_space_read_1(memt, mmioh, TR_MAC_OFFSET + off);
+		if ((off % 16) == 0)
+			printf("\n");
+		printf("%02x ", val);
+	}
+	printf("\n");
+}
+#endif