lkml.org 
[lkml]   [2005]   [May]   [2]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
From"Ju, Seokmann" <>
SubjectRE: LSI Logic's Ultra320 320-4X RAID adapter
DateMon, 2 May 2005 08:56:10 -0400
On Saturday, April 30, 2005 9:02 PM, Kallol wrote:
> The memory space PCI register access can not be used.
I'm not sure what this means. Can you please add more details on it?

> Question #1: Does 320-4X support IO Space device register access?
No, the controller does not support IO mapped I/O.

> Question #2: Do we have a linux driver for it that supports 
> IO ports also?
Yes, to support LSI MegaRAID controllers (typically old controllers), driver
on the 2.4 kernel supports I/O mapped I/O.

Thank you.

Seokmann
LSI Logic Corporation.

> -----Original Message-----> From: kallol@nucleodyne.com [mailto:kallol@nucleodyne.com] 
> Sent: Saturday, April 30, 2005 9:02 PM> To: linux-scsi@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: LSI Logic's Ultra320 320-4X RAID adapter> > > > Hello,>       We have been evaluting different IO adapters for a 
> storage system vendor.
> 
> LSI logic's 320-4X RAID controller seems to be a good choice.
> 
> There is an issue with the system on which we are measuring 
> performance.
> The memory space PCI register access can not be used.
> 
> Question #1: Does 320-4X support IO Space device register access?
> Question #2: Do we have a linux driver for it that supports 
> IO ports also?
> 
> The megaraid linux driver seems to check the BAR0, if it is 
> memory bar then mem
> space is used otherwise IO space.
> 
> May be the adapter supporting memory space also support IO 
> space access.
> 
> 
> Thanks,
> Kallol
> -
> To unsubscribe from this list: send the line "unsubscribe 
> linux-scsi" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-05-02 15:00    [from the cache]
©2003-2008