Handle detecting the available media and state of medium selection links
on EtherLan 100 (and presumably 500) boards.
This commit is contained in:
bjh21
parent
f41028779b
commit
4942923809
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@ -1,4 +1,4 @@
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/* $NetBSD: if_eh.c,v 1.2 2000/12/16 18:24:36 bjh21 Exp $ */
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/* $NetBSD: if_eh.c,v 1.3 2000/12/17 22:29:26 bjh21 Exp $ */
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/*-
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* Copyright (c) 2000 Ben Harris
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@ -53,7 +53,7 @@
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#include <sys/param.h>
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__KERNEL_RCSID(0, "$NetBSD: if_eh.c,v 1.2 2000/12/16 18:24:36 bjh21 Exp $");
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__KERNEL_RCSID(0, "$NetBSD: if_eh.c,v 1.3 2000/12/17 22:29:26 bjh21 Exp $");
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#include <sys/systm.h>
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#include <sys/device.h>
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@ -91,15 +91,23 @@ __KERNEL_RCSID(0, "$NetBSD: if_eh.c,v 1.2 2000/12/16 18:24:36 bjh21 Exp $");
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#include <machine/bswap.h>
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#endif
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#define EH_MEDIA_2 0
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#define EH_MEDIA_T 1
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#define EH_MEDIA_2_T 2
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#define EH_MEDIA_FL_T 3
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struct eh_softc {
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struct dp8390_softc sc_dp;
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bus_space_tag_t sc_datat;
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bus_space_handle_t sc_datah;
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bus_space_tag_t sc_ctlt;
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bus_space_handle_t sc_ctlh;
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bus_space_tag_t sc_ctl2t;
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bus_space_handle_t sc_ctl2h;
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struct irq_handler *sc_ih;
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int sc_flags;
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#define EHF_16BIT 0x01
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#define EHF_MAU 0x02
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int sc_type;
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u_int8_t sc_ctrl; /* Current control reg state */
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};
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@ -112,6 +120,7 @@ int eh_test_mem(struct dp8390_softc *);
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void eh_writemem(struct eh_softc *, u_int8_t *, int, size_t);
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void eh_readmem(struct eh_softc *, int, u_int8_t *, size_t);
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static void eh_init_card(struct dp8390_softc *);
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static int eh_availmedia(struct eh_softc *);
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/* if_media glue */
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static int eh_mediachange(struct dp8390_softc *);
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@ -145,18 +154,28 @@ eh_match(struct device *parent, struct cfdata *cf, void *aux)
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static const u_int8_t demo_addr_100[] = { 0x00, 0xc0, 0x32, 0x00, 0x84, 0x57 };
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static const u_int8_t demo_addr_200[] = { 0x00, 0xc0, 0x32, 0x00, 0x17, 0xbf };
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/* XXX 10baseFL on E513 */
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static int media_only2[] = { IFM_ETHER | IFM_10_2 };
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static int media_onlyt[] = { IFM_ETHER | IFM_10_T };
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static int media_2andt[] =
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{ IFM_ETHER | IFM_10_2, IFM_ETHER | IFM_10_T, IFM_ETHER | IFM_AUTO };
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static const struct {
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int nmedia;
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int *media;
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} media_switch[] = {
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{ 1, media_only2 },
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{ 1, media_onlyt },
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{ 3, media_2andt }
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};
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static void
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eh_attach(struct device *parent, struct device *self, void *aux)
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{
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struct podulebus_attach_args *pa = aux;
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struct eh_softc *sc = (struct eh_softc *)self;
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struct dp8390_softc *dsc = &sc->sc_dp;
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/* XXX Not all cards really support all media */
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/* XXX 10baseFL on E513 */
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int media[] =
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{ IFM_ETHER | IFM_AUTO,
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IFM_ETHER | IFM_10_2,
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IFM_ETHER | IFM_10_T};
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int *media;
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int mediaset, nmedia;
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int i;
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/* Canonicalise card type. */
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@ -178,13 +197,15 @@ eh_attach(struct device *parent, struct device *self, void *aux)
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/* Memory size and width varies. */
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dsc->mem_start = 0;
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switch (sc->sc_type) {
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case PODULE_ICUBED_ETHERLAN100:
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case PODULE_ICUBED_ETHERLAN200:
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printf(": 8-bit, 32 KB RAM\n");
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sc->sc_flags |= EHF_MAU;
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/* FALLTHROUGH */
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case PODULE_ICUBED_ETHERLAN100:
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printf(": 8-bit, 32 KB RAM");
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dsc->mem_size = 0x8000;
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break;
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case PODULE_ICUBED_ETHERLAN500:
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printf(": 16-bit, 64 KB RAM\n");
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printf(": 16-bit, 64 KB RAM");
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sc->sc_flags |= EHF_16BIT;
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dsc->mem_size = 0x10000;
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break;
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@ -200,6 +221,9 @@ eh_attach(struct device *parent, struct device *self, void *aux)
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sc->sc_ctlt = pa->pa_fast_t;
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bus_space_subregion(sc->sc_ctlt, pa->pa_fast_h, EH_CTRL, 1,
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&sc->sc_ctlh);
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sc->sc_ctl2t = pa->pa_fast_t;
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bus_space_subregion(sc->sc_ctl2t, pa->pa_fast_h, EH_CTRL2, 1,
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&sc->sc_ctl2h);
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/* dsc->cr_proto? */
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/* dsc->rcr_proto? */
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@ -226,6 +250,26 @@ eh_attach(struct device *parent, struct device *self, void *aux)
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sc->sc_ctrl = 0x00;
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if (!(sc->sc_flags & EHF_MAU))
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mediaset = eh_availmedia(sc);
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else
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/* XXX get MAU type */
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mediaset = EH_MEDIA_2_T;
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switch (mediaset) {
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case EH_MEDIA_2:
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printf(", 10base2 only");
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break;
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case EH_MEDIA_T:
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printf(", 10baseT only");
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break;
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case EH_MEDIA_2_T:
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printf(", combo 10base2/T");
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break;
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}
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media = media_switch[mediaset].media;
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nmedia = media_switch[mediaset].nmedia;
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printf("\n");
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/* XXX XXX XXX Ethernet address */
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switch (sc->sc_type) {
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case PODULE_ICUBED_ETHERLAN100:
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@ -236,9 +280,8 @@ eh_attach(struct device *parent, struct device *self, void *aux)
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break;
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}
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printf("%s: rigged demo mode\n", self->dv_xname);
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dp8390_config(dsc, media, sizeof(media) / sizeof(media[0]),
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IFM_ETHER | IFM_10_2);
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dp8390_config(dsc, media, nmedia, media[0]);
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dp8390_stop(dsc);
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#if 0
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@ -643,6 +686,45 @@ eh_writemem(struct eh_softc *sc, u_int8_t *src, int dst, size_t len)
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bus_space_read_1(nict, nich, ED_P0_CRDA0));
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}
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/*
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* Work out the media types available on the current card.
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*
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* We try to switch to each of 10base2 and 10baseT in turn. If the card
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* only supports one type, the media select line will be tied to select
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* that, so it won't move when we push it.
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*
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* The media select jumpers (at least on the EtherLan 100) have the same
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* effect.
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*/
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int
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eh_availmedia(struct eh_softc *sc)
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{
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/* Set the card to use AUI (10b2 or 10bFL) */
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bus_space_write_1(sc->sc_ctlt, sc->sc_ctlh, 0,
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sc->sc_ctrl & ~EH_CTRL_MEDIA);
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/* Check whether that worked */
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if ((bus_space_read_1(sc->sc_ctl2t, sc->sc_ctl2h, 0) &
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EH_CTRL2_10B2) == 0) {
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bus_space_write_1(sc->sc_ctlt, sc->sc_ctlh, 0, sc->sc_ctrl);
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return EH_MEDIA_T;
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}
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/* Try 10bT and see if that works */
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bus_space_write_1(sc->sc_ctlt, sc->sc_ctlh, 0,
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sc->sc_ctrl | EH_CTRL_MEDIA);
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if ((bus_space_read_1(sc->sc_ctl2t, sc->sc_ctl2h, 0) &
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EH_CTRL2_10B2)) {
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bus_space_write_1(sc->sc_ctlt, sc->sc_ctlh, 0, sc->sc_ctrl);
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return EH_MEDIA_2;
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}
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/* If both of them worked, this is a combo card. */
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bus_space_write_1(sc->sc_ctlt, sc->sc_ctlh, 0, sc->sc_ctrl);
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return EH_MEDIA_2_T;
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}
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/*
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* Medium selection has changed.
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*/
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@ -685,14 +767,18 @@ void
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eh_mediastatus(struct dp8390_softc *dsc, struct ifmediareq *ifmr)
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{
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struct eh_softc *sc = (struct eh_softc *)dsc;
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int ctrl2;
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/* XXX 10baseFL on E513? */
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if (sc->sc_ctrl & EH_CTRL_MEDIA) {
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/* Read the actual medium currently in use. */
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ctrl2 = bus_space_read_1(sc->sc_ctl2t, sc->sc_ctl2h, 0);
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if (ctrl2 & EH_CTRL2_10B2) {
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ifmr->ifm_active = IFM_ETHER | IFM_10_2;
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} else {
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ifmr->ifm_active = IFM_ETHER | IFM_10_T | IFM_AVALID;
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if (bus_space_read_1(sc->sc_ctlt, sc->sc_ctlh, 0) &
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EH_CTRL_LINK)
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ifmr->ifm_active |= IFM_ACTIVE;
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} else
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ifmr->ifm_active = IFM_ETHER | IFM_10_2;
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}
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: if_ehreg.h,v 1.2 2000/12/16 18:23:14 bjh21 Exp $ */
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/* $NetBSD: if_ehreg.h,v 1.3 2000/12/17 22:29:26 bjh21 Exp $ */
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/*
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* This file is in the public domain
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@ -17,6 +17,7 @@
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#define EH_DP8390 0x000 /* MEMC space */
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#define EH_DATA 0x200 /* MEMC space */
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#define EH_CTRL 0x200 /* FAST space */
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#define EH_CTRL2 0xa00 /* FAST space */
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/* Bits of the control register */
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#define EH_CTRL_IE 0x01 /* Interrupt enable (W) */
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@ -24,4 +25,7 @@
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#define EH_CTRL_MEDIA 0x02 /* Media select (0 = 10b2, 1 = 10bT) (W) */
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#define EH_CTRL_LINK 0x02 /* Link beat detect (R) */
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/* Bits of control register 2 */
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#define EH_CTRL2_10B2 0x01 /* Media sense (0 = 10bT, 1 = 10b2) (R) */
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#endif
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