Date: Thu, 10 Jul 1997 00:40:02 -0700 (PDT) From: Peter Wemm <peter@spinner.dialix.com.au> To: freebsd-bugs Subject: Re: kern/4071: Writing SCSI tape fails: DMA beyond end of ISA Message-ID: <199707100740.AAA13011@hub.freebsd.org>
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The following reply was made to PR kern/4071; it has been noted by GNATS. From: Peter Wemm <peter@spinner.dialix.com.au> To: koshy@india.hp.com Cc: FreeBSD-gnats-submit@FreeBSD.ORG Subject: Re: kern/4071: Writing SCSI tape fails: DMA beyond end of ISA Date: Thu, 10 Jul 1997 15:27:29 +0800 koshy@india.hp.com wrote: > > Jul 10 12:31:32 krill /kernel: aha0: DMA beyond end Of ISA: 0x1f86d08 > Jul 10 12:31:32 krill /kernel: st0: bad request, must be between 0 and 0 > > The kernel has BOUNCE_BUFFERS configured. The problem was not present in > -current kernels of April 1997 vintage. > > Disk access to SD0 works OK (touch wood). It happens for me too on an old machine, but the only active scsi devices are sd0 and sd1. aha0 at 0x330-0x333 irq 11 drq 7 on isa aha0: waiting for scsi devices to settle scbus0 at aha0 bus 0 sd0 at scbus0 target 0 lun 0 sd0: <QUANTUM MAVERICK 540S 0901> type 0 fixed SCSI 2 sd0: Direct-Access 516MB (1057758 512 byte sectors) sd0: with 2853 cyls, 4 heads, and an average 92 sectors/track sd1 at scbus0 target 1 lun 0 sd1: <QUANTUM FIREBALL_TM2110S 300X> type 0 fixed SCSI 2 sd1: Direct-Access 2014MB (4124736 512 byte sectors) sd1: with 6810 cyls, 4 heads, and an average 151 sectors/track cd0 at scbus0 target 2 lun 0 cd0: <NEC CD-ROM DRIVE:55 1.0> type 5 removable SCSI 1 cd0: CD-ROM cd present [132125 x 2048 byte records] st0 at scbus0 target 4 lun 0 st0: <ARCHIVE VIPER 2525 25462 -007> type 1 removable SCSI 1 st0: Sequential-Access density code 0x0, drive empty npx0 on motherboard npx0: INT 16 interface aha0: DMA beyond end Of ISA: 0x1eafd14 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ It happens once only, I wonder if this is st0 checking for status or something? Cheers, -Peter
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