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Date: Fri, 10 Apr 1998 20:14:50 +0900
From: shuzo@cis.canon.co.jp
To: FreeBSD-users-jp@jp.freebsd.org
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Subject: [FreeBSD-users-jp 27132] Re: [Q] About transmit underflow
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$BCfB<!w%-%d%N%s$H?=$7$^$9!%(J

> ogiso> > de0: abnormal interrupt: transmit underflow (raising TX threshold to
> ogiso> 96|256)
> ogiso> > de0: abnormal interrupt: transmit underflow (raising TX threshold to
> ogiso> 8|512)
> ogiso> 
> ogiso> $B$3$N%a%C%;!<%8$&$A$G$b=P$^$7$?!#(J

$B$^$:!$$3$N%a%C%;!<%8$N0UL#$G$9$,!$(Jde$B%I%i%$%P$,(J2114x$B$,Aw?.%"%s%@!<%U%m!<(J
$B3d$j9~$_$rH/@8$7$?$3$H$r8!=P$7$?$3$H$r0UL#$7$^$9!%(J

$B7kO@$+$i@h$K8@$&$H!$LdBj$O(J($B$[$H$s$I(J)$B$"$j$^$;$s!%(J

$B$3$N!VAw?.%"%s%@!<%U%m!<3d$j9~$_(J(Transmit Underflow)$B!W$O(J2114x$B$,(J
$BAw?.%G!<%?$r%a%$%s%a%b%j$+$i<h$C$F$-$F!$<+J,$N(JFIFO$B$K<h$j9~$_!$(J
$B%$!<%5%M%C%H$KAw?.$9$k2aDx$G!$<+J,$N(JFIFO$B$K<h$j9~$`%9%T!<%I$h$j$b!$(J
$B%$!<%5%M%C%H$KAw?.$9$k%9%T!<%I$,Aa$$$?$a$K(JFIFO$B$,6u$K$J$k$3$H$K$h$j(J
$BH/@8$7$^$9!%(J

$B$3$l$O!$(JPCI$B%P%9$NE>Aw%9%T!<%I$,CY$/!$%$!<%5%M%C%H$,$9$C$+$i$+$s$N(J
$B$H$-$K82Cx$K$J$j!$(J

> foo $B$O!":G=i(J 8port $B$N%O%V$KD>7k$@$C$?$N$G$9$,!"$b$&0lBf$D$J$.$?$/$J$C$F(J
> $BM>$C$F$$$?(J 4port $B$N%O%V$G$o$1$?$iF0$$$?$N$G!"$=$N$^$^;H$C$F$$$k>u67$G$9!#(J
> $B$=$l$r$d$C$?$N$HF1;~$K!"(Jfoo $B$K(J AAA-133 $B$r$D$1$FF0:n3NG'$H$+$r;O$a$F$^$7$F(J
> AHA-2940U, AAA-133, DE-500AA, Millennium $B$H(J PCI $B%9%m%C%HK~GU$G(J
> $B7k9=Ii2Y$r$+$1$?$j$7$F$$$k$N$G!"$=$&$$$&$3$H$N1F6A$b$"$k$N$+$H;W$C$F$^$7$?!#(J

$B?eED!wK!@/Bg$5$s$N;vNc$O!$(J
$B!&(JPCI$B%9%m%C%H$,0lGU(J -> PCI$B%P%9>e$G(J2114x$B$,E>Aw$G$-$k5!2q$,>/$J$$(J -> PCI$B$,CY$$(J
$B!&%O%V$K$O(J1$BBf$7$+$D$J$,$C$F$$$J$$(J -> $B%$!<%5%M%C%H$,$9$C$+$i$+$s(J
$B$rN"IU$1$k9=@.$H$J$C$F$$$^$9!%(J
($BJ8LL$G$O$o$+$j$^$;$s$,!$$*$=$i$/%9%$%C%A%s%0%O%V$G$7$g$&(J)

> $B:#(J dmesg $B$r$_$?$i(J
> 
> $B%5!<%P!'(J
> de0: receive: 00:00:f8:1e:5b:93: bad crc
> de0: receive: 00:00:f8:1e:5b:93: bad crc
> de0: receive: 00:00:f8:1e:5b:93: bad crc

$B$A$J$_$K!$Aw?.%"%s%@!<%U%m!<$,@8$8$?:]$K$O!$$=$l$^$G(JFIFO$B$K(J
$BN/$^$C$F$$$?%G!<%?$^$G$7$+Aw=P$5$l$^$;$s!%$7$?$,$C$F!$%5!<%PB&$G$O(J
$B%$!<%5%Q%1%C%H$N:G8eHx$KIU2C$5$l$k$Y$-(JCRC(Cyclic Redunduncy Check)$B$,(J
$BIU$$$F$$$J$$>uBV$N%Q%1%C%H$H$_$J$5$l!$(Jbad crc$B$H$N%a%C%;!<%8$,(J
$BI=<($5$l$k$N$G$9!%(J

> de0: abnormal interrupt: transmit underflow (raising TX threshold to 96|256)
> de0: abnormal interrupt: transmit underflow (raising TX threshold to 8|512)
> de0: abnormal interrupt: transmit underflow (raising TX threshold to 1024)

$BAw?.%"%s%@!<%U%m!<3d$j9~$_$,H/@8$7$?>l9g!$$G$-$k$@$1<+J,$N(JFIFO$B$K(J
$B%G!<%?$rN/$a$F$+$iAw?.$r$9$k$h$&$K!$Aw?.%9%l%C%7%g%k%I$r$@$s$@$s(J
$BBg$-$/$7$^$9!%$3$l$,(Jraising TX threshold to xxx$B$N0UL#$G$9!%(J

$B$G!$BP:v$G$9$,!$:,K\E*$J2r7h$K$J$k$+$O$o$+$j$^$;$s$,!$$$$/$D$+$"$j$^$9!%(J
 1$B!%(JBIOS$B$N@_Dj%a%K%e!<$G(JPCI$B%P%9$N%l%$%F%s%7%?%$%^$rBg$-$/$7$F$_$k(J
 2$B!%(JPCI$B%P%9>e$G(J2114x$B$NE>AwM%@h=g0L$r>e$2$k(J(BIOS$B$N2~B$$,I,MW$@$1$I(J)
 3$B!%(JPCI$B%P%9$K@\B3$7$F$$$kITMW$J%G%P%$%9$r8:$i$9(J($B$G$-$l$P(J...$B$@$1$I(J)
 4$B!%(JPCI$B%P%9$NE>AwB.EY$r>e$2$k(J($B5,3J30$N2~B$$,I,MW$@$1$I(J)
 5$B!%%$!<%5%M%C%H$KB>$N5!4o$r@\B3$7$F!$%$!<%5%M%C%H$r:.$^$;$k(J($B%$%_$J$7(J)
 6$B!%;~!9$X$s$J%Q%1%C%H$,%$!<%5%M%C%H>e$KAw?.$5$l$k$,!$5$$K$7$J$$!%(Jf(^^;

$B$^$!!$Aw?.%"%s%@!<%U%m!<$,IQH/$7$J$$$N$G$"$l$P(J6$B$G$$$$$N$G$O$J$$$G$7$g$&$+!)(J
1$B$b5$5Y$aDxEY$N%A%e!<%K%s%0$G$7$+$"$j$^$;$s!%(J

$B!t4V0c$C$?$3$H$r=q$$$F$$$k$D$b$j$O$J$$$G$9$,!$(J
$B!t$3$N2sEz$KBP$9$k<ALd$O8D?ME*$K$O<u$1IU$1$i$l$^$;$s!%(J
$B!t$40U8+!$$4;XE&$O(JML$B$G$I$&$>(J

-----
shuzo
