Date: Sat, 9 Aug 2003 19:40:49 -0700 (PDT) From: Warner Losh <imp@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/pccbb pccbb.c Message-ID: <200308100240.h7A2enM1075040@repoman.freebsd.org>
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imp 2003/08/09 19:40:49 PDT
FreeBSD src repository
Modified files:
sys/dev/pccbb pccbb.c
Log:
Some bridges, like o2 micro and maybe ricoh, have some issues between
the time the card is inserted and the time that the card is
configured. This can lead to interrupt storms. The O2Micro suggested
workaround is to route the card function interrupt to IRQ1. It
appears from my testing that this is an acceptable workaround for most
chipsets (there's still some issue with the ricoh chipset).
Also, only look at the NOT_A_CARD bit when the bridge tells us there's
a card present. At least one test caused this to be true after the
card was removed, but the author couldn't recreate it with the
workaround in place. The change is more conservative than the
previous code, but still has the work around that wasn't present in
the older code.
Revision Changes Path
1.86 +47 -10 src/sys/dev/pccbb/pccbb.c
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