Date: Mon, 10 Jul 2000 21:11:28 +0000 From: Joy Ganguly <joy@niksun.com> To: freebsd-smp@freebsd.org, freebsd-scsi@freebsd.org Subject: Adaptec 3950 and SMP... Message-ID: <396A3C00.DA8C7D51@falcon.niksun.com>
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hi all, i have a L440GX+ intel server motherboard running 2 P3. The motherboard has an on-board scsi controller aic7896 (ahc0, ahc1). Additionally i have added an "Adaptec 3950 scsi controller" board(ahc2, ahc3). When i boot an uniprocessor kernel everything works fine. However when i boot a multiprocessor kernel everything seems ok till the boot mesg shows "Waiting for scsi devices to settle". But after waiting for some time the boot msg shows a lot of SCB timeouts and hangs. IF i remove the additional scsi controller things start working again (except that the system complains about unable to mount root partition...but it boots). Since things work in a UP kernel i think it is an SMP related problem. The mptable output is :-# Required: options SMP # Symmetric MultiProcessor Kernel options APIC_IO # Symmetric (APIC) I/O # Optional (built-in defaults will work in most cases): #options NCPU=2 # number of CPUs #options NBUS=4 # number of busses #options NAPIC=1 # number of IO APICs #options NINTR=24 # number of INTs dmesg on the UP kernel shows ahc0: <Adaptec aic7896/97 Ultra2 SCSI adapter> rev 0x00 int a irq 11 on pci0.12.0 ahc0: aic7896/97 Wide Channel A, SCSI Id=7, 16/255 SCBs ahc1: <Adaptec aic7896/97 Ultra2 SCSI adapter> rev 0x00 int a irq 11 on pci0.12.1 ahc1: aic7896/97 Wide Channel B, SCSI Id=7, 16/255 SCBs ahc2: <Adaptec 3950B Ultra2 SCSI adapter> rev 0x00 int a irq 10 on pci0.13.0 ahc2: aic7896/97 Wide Channel A, SCSI Id=7, 16/255 SCBs ahc3: <Adaptec 3950B Ultra2 SCSI adapter> rev 0x00 int a irq 10 on pci0.13.1 ahc3: aic7896/97 Wide Channel B, SCSI Id=7, 16/255 SCBs Irq 10 is not used by anything else. What can be the problem ?? thanx in advance joy To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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