Support for identifying MAUs attached to EtherLan 200-series cards.
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bjh21
parent
8336df62f7
commit
0c0d8f3775
@ -1,4 +1,4 @@
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/* $NetBSD: if_eh.c,v 1.8 2000/12/20 23:08:44 bjh21 Exp $ */
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/* $NetBSD: if_eh.c,v 1.9 2000/12/22 22:21:37 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 1.8 2000/12/20 23:08:44 bjh21 Exp $");
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__KERNEL_RCSID(0, "$NetBSD: if_eh.c,v 1.9 2000/12/22 22:21:37 bjh21 Exp $");
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#include <sys/systm.h>
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#include <sys/device.h>
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@ -121,6 +121,7 @@ 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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/*static*/ int eh_identifymau(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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@ -172,7 +173,7 @@ eh_attach(struct device *parent, struct device *self, void *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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int *media;
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int mediaset, nmedia;
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int mediaset, mautype, nmedia;
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int i;
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char *ptr;
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u_int8_t *myaddr;
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@ -249,21 +250,35 @@ 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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if (sc->sc_flags & EHF_MAU) {
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mautype = eh_identifymau(sc);
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switch (mautype) {
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case EH200_MAUID_10_2:
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printf(", 10base2 MAU");
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mediaset = EH_MEDIA_2;
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break;
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case EH200_MAUID_10_T:
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printf(", 10baseT MAU");
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mediaset = EH_MEDIA_T;
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break;
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default:
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printf(", unknown MAU id %d", mautype);
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mediaset = EH_MEDIA_2; /* XXX */
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break;
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}
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} else {
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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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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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}
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media = media_switch[mediaset].media;
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nmedia = media_switch[mediaset].nmedia;
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@ -719,6 +734,40 @@ eh_availmedia(struct eh_softc *sc)
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return EH_MEDIA_2_T;
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}
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/*
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* Identify the MAU attached to an EtherLan 200-series network slot card.
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*
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* Follows the protocol described at the back of the Acorn A3020 and A4000
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* Network Interface Specification.
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*/
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int
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eh_identifymau(struct eh_softc *sc)
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{
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int id;
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bus_space_tag_t ctlt;
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bus_space_handle_t ctlh;
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ctlt = sc->sc_ctlt;
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ctlh = sc->sc_ctlh;
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/* Reset: Output 1 for 100us. */
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bus_space_write_1(ctlt, ctlh, 0, EH200_CTRL_MAU);
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DELAY(100);
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for (id = 0; id < 128; id++) {
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/* Output 0 for 10us. */
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/* XXX For some reason, a read is necessary between writes. */
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bus_space_read_1(ctlt, ctlh, 0);
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bus_space_write_1(ctlt, ctlh, 0, 0);
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DELAY(10);
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/* Read state. */
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if (bus_space_read_1(ctlt, ctlh, 0) & EH200_CTRL_MAU)
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break;
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/* Output 1 for 10us. */
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bus_space_write_1(ctlt, ctlh, 0, EH200_CTRL_MAU);
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DELAY(10);
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}
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return id;
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}
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/*
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* Medium selection has changed.
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*/
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@ -1,4 +1,4 @@
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/* $NetBSD: if_ehreg.h,v 1.4 2000/12/20 23:08:44 bjh21 Exp $ */
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/* $NetBSD: if_ehreg.h,v 1.5 2000/12/22 22:21:37 bjh21 Exp $ */
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/*
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* This file is in the public domain
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@ -23,8 +23,10 @@
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* AUX1 bits:
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* 0 r Interrupt status
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* 0 w Interrupt enable
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* 1 r Link beat (0 = link, 1 = no link)
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* 1 w Media select (0 = 10b2, 1 = 10bT)
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* 1 r (E100) Link beat (0 = link, 1 = no link)
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* 1 w (E100) Media select (0 = 10b2, 1 = 10bT)
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* 1 r (E200) MAU ID input (from MAU)
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* 1 w (E200) MAU ID output (to MAU)
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*
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* AUX2 bits:
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* 0 r Media sense (0 = 10bT, 1 = 10b2)
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@ -44,7 +46,17 @@
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#define EH_CTRL_MEDIA 0x02 /* Media select (0 = 10b2, 1 = 10bT) (W) */
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#define EH_CTRL_NOLINK 0x02 /* Link beat detect (R) */
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/*
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* The EtherLan 200 is strange. A write to AUX1 following another write has
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* the effect described above, but a write following a read affects this:
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*/
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#define EH200_CTRL_MAU 0x02 /* MAU input/output */
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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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/* EtherLan 200 MAU types */
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#define EH200_MAUID_10_T 2
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#define EH200_MAUID_10_2 3
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#define EH200_MAUID_10_5 4
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#endif
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