AIC7850 panic (post 2.4.14)

AIC7850 panic (post 2.4.14)

[Carl Scarfoglio]

I had the exact same problem with this chipset (Adaptec 2904), but I 
increased the "Initial bus reset delay" from 150 ms to 250 and solved it.
By the way, do you have cdrom's attached to your scsi card? Beware, 
since 2.5.1-pre8 (at least) the PC will hang solid if I try to mount a 
data cd. Up to 2.5.1-pre11 the problem remains. Can you verify this 
(without mounting any disk, of course)?
Regards,
			Carlo Scarfoglio

Re: AIC7850 panic (post 2.4.14)

[J.P. Morris]

> I had the exact same problem with this chipset (Adaptec 2904), but I 
> increased the "Initial bus reset delay" from 150 ms to 250 and solved it.

I've tried that, and also reducing TCQs to 8 as suggested elsewhere.
Unfortunately it hasn't solved the problem, it just takes longer to die.

> By the way, do you have cdrom's attached to your scsi card? Beware, 
> since 2.5.1-pre8 (at least) the PC will hang solid if I try to mount a 
> data cd. Up to 2.5.1-pre11 the problem remains. Can you verify this 
> (without mounting any disk, of course)?

Yes, the card drives a CDROM unit and a DVD-RAM drive.
However I don't intend to try 2.5 for a good few months yet.

> Regards,

-- 
JP Morris - aka DOUG the Eagle (Dragon) -=UDIC=-  doug@it-he.org
Fun things to do with the Ultima games            http://www.it-he.org
Developing a U6/U7 clone                          http://ire.it-he.org
d+++ e+ N+ T++ Om U1234!56!7'!S'!8!9!KA u++ uC+++ uF+++ uG---- uLB----
uA--- nC+ nR---- nH+++ nP++ nI nPT nS nT wM- wC- y a(YEAR - 1976)

AIC7850 panic (post 2.4.14)

[J.P. Morris]

Here's a more blatant problem with SCSI in 2.4.16 that still exists
in 17-rc1.  As an RC it is probably too late to fix for '17, but
whatever.

(This may have been introduced in 2.4.15, I haven't yet checked)

This problem is that th kernel panics on boot as soon as it reaches
the AIC7xxx module, which is loaded at the end (i.e. not built in).

This only happens from cold; when the machine is rebooted it will
initialise the SCSI card successfully.. just never on the first
attempt.  The aic7xxx_old driver works.

Barring transcription errors, here are the details:

SCSI 0:1:0 attempting to queue an abort message
scsi0 dumping card state in data_out phase at SEQADDR 0x0
ACCUM = 0x0  SINDEX=0x0  DINDEX=0x0  ARG_2=0x0
HCNT = 0x0  SCSISEQ=0x0  SBLKCTL=0xc0
DFCNTRL = 0x0  SCSISIGI = 0x0  SXFRCTL0=0x0
SSTAT0 = 0x0  SSTAT1 = 0x8
STACK = 0x0 0x0 0x0 0x0
SCB count = 4
Kernel NEXTQSCB = 3
Card NEXTQSCB = 0
QINFIFO entries: 3 2
waiting queue entries = 0:255 1:255 2:255
disconnected queue entries = 0:255 1:255 2:255
QOUTFIFO entries:
sequencer free SCB list: 0 1 2
Pending list: 2
Kernel Free SCB list: 1 2
Untagged Q(1): 2
Dev Q(0:1:0) 0 waiting
qinpos = 0, SCB index = 3
Kernel Panic: Loop 1


-- 
JP Morris - aka DOUG the Eagle (Dragon) -=UDIC=-  doug@it-he.org
Fun things to do with the Ultima games            http://www.it-he.org
Developing a U6/U7 clone                          http://ire.it-he.org
d+++ e+ N+ T++ Om U1234!56!7'!S'!8!9!KA u++ uC+++ uF+++ uG---- uLB----
uA--- nC+ nR---- nH+++ nP++ nI nPT nS nT wM- wC- y a(YEAR - 1976)