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Serious kludge around network timeouts. Network timeouts seem to be

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caused by the VIA missing the ethernet slot interrupt.  If we get a
watchdog, try calling the via's nubus interrupt function.  If that
causes an interrupt, don't reset anything.  If it doesn't, use old
behavior (log timeout and reset).

Yuck.
This commit is contained in:
briggs 1995-03-23 13:00:05 +00:00
parent 990077ba88
commit 129893572f
1 changed files with 26 additions and 6 deletions

32
sys/arch/mac68k/dev/if_ae.c

@ -1,4 +1,4 @@
/* $NetBSD: if_ae.c,v 1.17 1995/03/01 03:47:08 briggs Exp $ */
/* $NetBSD: if_ae.c,v 1.18 1995/03/23 13:00:05 briggs Exp $ */
/*
* Device driver for National Semiconductor DS8390 based ethernet adapters.
@ -22,7 +22,7 @@
*/
/*
* $Id: if_ae.c,v 1.17 1995/03/01 03:47:08 briggs Exp $
* $Id: if_ae.c,v 1.18 1995/03/23 13:00:05 briggs Exp $
*/
#include "ae.h"
@ -61,6 +61,7 @@
#endif
#include <sys/device.h>
#include "../mac68k/via.h"
#include "nubus.h"
#include "if_aereg.h"
@ -108,9 +109,9 @@ struct ae_softc {
u_char next_packet; /* pointer to next unread RX packet */
} ae_softc[NAE];
void ae_find(), ae_attach(), aeintr();
void ae_find(), ae_attach();
int ae_init(), ae_ioctl(), ae_probe(),
ae_start(), ae_reset(), ae_watchdog();
ae_start(), ae_reset(), ae_watchdog(), aeintr();
struct cfdriver aecd =
{ NULL, "ae", ae_probe, ae_attach, DV_IFNET, sizeof(struct ae_device), NULL, 0 };
@ -526,12 +527,29 @@ ae_stop(sc)
* Device timeout/watchdog routine. Entered if the device neglects to
* generate an interrupt after a transmit has been started on it.
*/
static int aeintr_ctr=0;
int
ae_watchdog(unit)
short unit;
{
struct ae_softc *sc = &ae_softc[unit];
#if 1
/*
* This is a kludge! The via code seems to miss slot interrupts
* sometimes. This kludges around that by calling the handler
* by hand if the watchdog is activated. -- XXX (akb)
*/
int i;
i = aeintr_ctr;
(*via2itab[1])(1);
if (i != aeintr_ctr)
return;
#endif
log(LOG_ERR, "ae%d: device timeout\n", unit);
ae_reset(sc);
}
@ -723,7 +741,7 @@ static inline void ae_xmit(ifp)
/*
* Set a timer just in case we never hear from the board again
*/
ifp->if_timer = 4;
ifp->if_timer = 2;
}
/*
@ -979,13 +997,14 @@ ae_rint(unit)
/*
* Ethernet interface interrupt processor
*/
void
int
aeintr(unit)
int unit;
{
struct ae_softc *sc = &ae_softc[unit];
u_char isr;
aeintr_ctr++;
/*
* Set NIC to page 0 registers
*/
@ -1148,6 +1167,7 @@ aeintr(unit)
(void) NIC_GET(sc, AE_P0_CNTR2);
}
}
return 0;
}
/*