Date: Thu, 02 Jul 1998 21:48:30 -0700 From: Mike Smith <mike@smith.net.au> To: "Larry S. Lile" <lile@stdio.com> Cc: David Greenman <dg@root.com>, Mike Smith <mike@smith.net.au>, hackers@FreeBSD.ORG Subject: Re: Problems with irq 9(2)? Message-ID: <199807030448.VAA04008@antipodes.cdrom.com> In-Reply-To: Your message of "Wed, 01 Jul 1998 23:16:46 EDT." <Pine.SUN.3.91.980701231037.24306A-100000@heathers2.stdio.com>
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> > > On Wed, 1 Jul 1998, David Greenman wrote: > > > >Anyway, the card has a register (isrp) that has a bit that shows whether > > >or not the card can interrrupt the 8259 on its irq line. This works for > > >the first interrupt but as soon as I enter an spl loop that bit goes > > >high, saying he can't interrupt, and never drops even after exiting the > > >spl loop. > > > > Sounds to me like you aren't acking the interrupt in your ISR. > > Could I get you to take a peek at whats going on? The adapter spec is > at (or at least the pages on the status registers) > http://ppdbooks.pok.ibm.com:80/cgi-bin/bookmgr/bookmgr.cmd/BOOKS/BK8R1001 > /1.4.9.4 > and the code for the driver is at http://anarchy.stdio.com (or you can get > to it at http://www.jurai.net/~winter/tr/tr.html). I have been working > from the MACH source and I can't see what i'm doing wrong. > > Whats got me really confused is bit 1 in the ISRP high (even) which > is called User interrupt blocked? And worst is I can't seem to > reset it. When you say this, have you tried writing a 0 to it? Also, how about this snippet: ADAPTER INTERRUPT ENABLE For PC System with PC I/O Bus: An I/O Write (OUT instruction) to X'0A23' (adapter 0) or X'0A27' (adapter 1) resets and re-enables the adapter interrupt generation circuitry. An I/O read to this address is reserved. Apart from that, I would be asking IBM for help... -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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