Date: Sun, 28 Feb 1999 17:12:12 +0100 From: "D. Rock" <rock@cs.uni-sb.de> To: freebsd-isdn@FreeBSD.ORG Subject: Re: HSCX wait for XFW timeout (was Re: error message in the logs - 00.70) Message-ID: <36D96ADC.DCF87A60@cs.uni-sb.de> References: <m10EbGk-00000BC@bert.kts.org>
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I am now also seeing these messages sometimes, just after I swiched from an 1.7GB IDE drive to an 4GB IDE drive. Because of some problems with the new drive, I couldn't turn on DMA (which was enabled on the old drive). I never saw this messages with the old one, with the new drive the first message appeared after a few minutes. Daniel Hellmuth Michaelis schrieb: > > Wolfgang Helbig wrote: > > > > i4b-L1-isic_hscx_waitxfw: HSCX wait for XFW timeout! > > > > > > means, and i forgot to answer that one. This is an indication that an IRQ > > > from the HSCX (the chip handling the B-channel) got lost - most likely > > > > Hmm. This timeout occurs while waiting for the transmit buffer > > to accept another 32 bytes to transmit. I don't see how a lost interrupt > > can cause this timeout. (Even if you have IDE drives) > > My theory is, that while waiting, someone else blocks the interrupt for that > long time, that another HSCX transaction starts immediately (by chance out of > the blocked interrupt in which another HSCX interrupt occurs) which clears > implicitely the flag we are waiting for (perhaps i should introduce a > flag signalling that we are in such a wait status, and see what happenes > and who might clear it, but i'm too lazy to do that right now ....). > > When the system in question was changed from SCSI to IDE (nothing else did > change) those messages started to occur, with SCSI i never saw a single > such message. > > hellmuth > -- > Hellmuth Michaelis hm@kts.org Hamburg, Europe > We all live in a yellow subroutine, yellow subroutine, yellow subroutine ... > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-isdn" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isdn" in the body of the message
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