On Tue, Oct 16 2001, Matias Atria wrote:

Hi,

try compiling your kernel without support for it. I am not even sure
that's the reason. But my machine worked fine for days using just NFS
root (that was, before I recompiled the kernel with SCSI support). I was
able to build a kernel - and that takes some time ;).

Goran

> 
> I was able to boot twice and the system ran fine for about 20 minutes
> until it crashed with what looked like the same error as yours, but I
> didn't write it down and I don't trust my memory too much. In any case, I
> was not doing anything funny, just editing some files with vi, and I was
> using NFS (not using the disk at all).
> 
> BTW I just tried it again, making sure I got to the rom prompt as soon as
> possible, and again it crashed as before the "stray interrupt" error.
> 
> Is there any way of "disabling" SCSI altogether?
> 
> Cheers,
> Matias.
> 
> On Tue, 16 Oct 2001, Goran Koruga wrote:
> 
> > On Tue, Oct 16 2001, Darrin B. Jewell wrote:
> >
> > Hi,
> >
> > I was also getting something similar when trying to access my SCSI disk
> > (using the latest patches that added some sort of SCSI support) :
> >
> > NDMAP: *intrstat = 0x4000000<SCSI_DMA>
> > NDMAP: *intrmask = 0xffffffffbc027648<NMI,TIMER,ENETX_DMA,ENETR_DMA,SCSI_DMA,SCC,DSP_4,DISK|C16_VIDEO,SCSI,ENETX,ENETR,DSP_3,KBD_MOUSE>
> > NDMAP: nd->_nd_map->dm_mapsize = 8160
> > NDMAP: nd->_nd_map->dm_nsegs = 3
> > NDMAP: nd->_nd_map->dm_segs[2].ds_addr = 0x04f85000
> > NDMAP: nd->_nd_map->dm_segs[2].ds_len = 128
> > NDMAP: nd->_nd_map->dm_segs[2].ds_xfer_len = 305446639
> > NDMAP: nd->_nd_map_cont->dm_mapsize = 80
> > NDMAP: nd->_nd_map_cont->dm_nsegs = 1
> > NDMAP: nd->_nd_map_cont->dm_segs[0].ds_addr = 0x0459b760
> > NDMAP: nd->_nd_map_cont->dm_segs[0].ds_len = 80
> > NDMAP: nd->_nd_map_cont->dm_segs[0].ds_xfer_len = 80
> > NDMAP: dd->dd_csr          = 0xa000000<COMPLETE,SUPDATE>
> > NDMAP: dd->dd_saved_next   = 0x04f420a0
> > NDMAP: dd->dd_saved_limit  = 0x04f43000
> > NDMAP: dd->dd_saved_start  = 0x0459b760
> > NDMAP: dd->dd_saved_stop   = 0x0459b7b0
> > NDMAP: dd->dd_next         = 0x04f85080
> > NDMAP: dd->dd_next_initbuf = 0x04f85080
> > NDMAP: dd->dd_limit        = 0x04f85080
> > NDMAP: dd->dd_start        = 0x0459b760
> > NDMAP: dd->dd_stop         = 0x0459b7b0
> > NDMAP: interrupt ipl (6) intr(0x4000000<SCSI_DMA>)
> > panic: DMA Unexpected dma state in interrupt
> > (0xa000000<COMPLETE,SUPDATE>)
> > Stopped at      _cpu_Debugger+0x6:      unlk    a6
> >
> > The rest of the details can be found in my mail in mail archives. But I
> > only received this message when I was trying to play with the disk - if I
> > used NFS root things worked smoothly.
> >
> > BR,
> > Goran
> >
> > >
> > > The stray interrupt is a SCSI interrupt that isn't handled because
> > > there is no SCSI driver in the kernel.  I don't remember exactly
> > > which conditions cause it, but I think it may be that you interrupted
> > > a scsi boot sequence to get the rom prompt.
> > >
> > > I don't have access to a machine right now to experiment on how
> > > to easily access the rom without interrupting an active scsi operation,
> > > but it should be possible.
> > >
> > > Darrin
> > >
> > > Matias Atria <matias@sas.upenn.edu> writes:
> > >
> > > > Hi,
> > > >
> > > > I've been trying to boot NetBSD 1.5.2 on my color (non-turbo) slab, but I
> > > > always get the same error (log below). I was running NEXTSTEP 4.2 without
> > > > problems until I decided to try NetBSD. If you need more info just let me
> > > > know (and if I'm off topic here, let me know too).
> > > >
> > > > Cheers,
> > > > Matias.
> > > >
> > > > ...
> > > > xe0 at intio0
> > > > xe0 at MAX address 00:00:0f:00:ca:02
> > > > nextkbd0 at intio0
> > > > wskbd0 at nextkbd0: console keyboard
> > > > nextdisplay0 at mainbus0: 1152 x 832, 16bpp
> > > > wsdisplay0 at nextdisplay0: console (color, vt100 emulation), using wskbd0
> > > > isrdispatch_autovec: stray level 3 interrupt
> > > >   *intrstat = 0x1000<SCSI>
> > > >   *intrmask = 0xffffffff98027648<NMI,ENETX_DMA,SCC,DSP_4,DISK|C16_VIDEO,
> > > > SCSI,ENETX,ENETR,DSP_3,KYBD_MOUSE>
> > > > ...
> > > > (same thing over and over until I am thrown into the debugger).
> > > >
> > > > Any clues?
> > >
> >
> > --
> >
> > Writing about music is like dancing about architecture.
> >     -- Frank Zappa
> >
> 

Best regards,
Goran

--
_______________________________________________________________
Goran Koruga                            goran.koruga@hermes.si

HERMES Softlab
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