5.1.0-pre2: tag_info wierdness????

[Doug Ledford]

Carlos Carvalho wrote:
> 
> I've just upgraded to 2.1.108 and 5.1.0-pre2, and the machine seems to
> be running fine. The problem is in the tag_info options. I have two
> aha2940UW, the first one with 3 disks, and the second with two. I want
> the tagged queue depth to be 32 for all except the second disk of the
> first card, which should be 24, so the options passed by lilo are
> 
> aic7xxx=verbose,pci_parity,tag_info:{{32,24,32},{32,32}}
> 
> However, here's what /proc/scsi/aic7xxx/0 says:
> 
> Adaptec AIC7xxx driver version: 5.1.0/3.2.4
> Compile Options:
>   AIC7XXX_RESET_DELAY    : 2
>   AIC7XXX_TAGGED_QUEUEING: Adapter Support Enabled
>                              Check below to see which
>                              devices use tagged queueing
>   AIC7XXX_PAGE_ENABLE    : Enabled (This is no longer an option)
>   AIC7XXX_PROC_STATS     : Disabled
> 
> Adapter Configuration:
>            SCSI Adapter: Adaptec AHA-294X Ultra SCSI host adapter
>                            Ultra Wide Controller
>     Programmed I/O Base: 8000
>       Adaptec SCSI BIOS: Enabled
>                     IRQ: 15
>                    SCBs: Active 0, Max Active 57,
>                          Allocated 60, HW 16, Page 255
>              Interrupts: 1908546
>       BIOS Control Word: 0x0034
>    Adapter Control Word: 0x005b
>    Extended Translation: Disabled
> Disconnect Enable Flags: 0xffff
>      Ultra Enable Flags: 0xfffb
>  Tag Queue Enable Flags: 0x0006
> Ordered Queue Tag Flags: 0x0006
> Default Tag Queue Depth: 24
>     Tagged Queue By Device array for aic7xxx host instance 0:
>       {32,24,32,255,255,255,255,255,255,255,255,255,255,255,255,255}
>     Actual queue depth per device for aic7xxx host instance 0:
>       {1,24,32,1,1,1,1,1,1,1,1,1,1,1,1,1}
> 
> You see that the "Tagged Queue By Device array" matches the lilo
> options, but the "Actual queue depth per device" is quite different!!
> What does this mean?
> 
> The same happens with the second adapter:
> 
>     Tagged Queue By Device array for aic7xxx host instance 1:
>       {32,32,255,255,255,255,255,255,255,255,255,255,255,255,255,255}
>     Actual queue depth per device for aic7xxx host instance 1:
>       {32,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}
> 
> Any ideas?

Drive 0 on bus 0 and drive 1 on bus 1 both report that they can not support
tagged queueing.  This probably means they have the DQue bit set in their
SCSI configuration or else they are older/cheaper drives that don't support
tagged queueing at all.

-- 

 Doug Ledford  <dledford at dialnet.net>
  Opinions expressed are my own, but
     they should be everybody's.

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