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From: Helge Deller <deller@gmx.de>
To: Albert Strasheim <fullung@ilink.nis.za>,
	parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] disks not recognized by new 53c700/53c710 driver (was [parisc-linux-cvs] linux rhirst)
Date: Sat, 13 Oct 2001 17:18:37 +0200	[thread overview]
Message-ID: <20011013151919.75740482A@dsl2.external.hp.com> (raw)
In-Reply-To: <20011013165925.C4317@dogbert.localdomain>

> SCSI subsystem driver Revision: 1.00
> 53c700: consistent memory allocation failed
>
> Is it normal for the consitent memory allocation to fail as indicated
> above? What does this mean?

Hi Albert.

Yes, it's normal that it fails that way on your machine.
It just says, that your machine/CPU needs a "cache-writeback"
command by the cpu before any other chips may access that 
area of memory directly via dma. 
In other words, your machine isn't cache-coherent and this
will be handled automatically by the driver. 
Btw, harmony (sound), lasi_82596 (LAN)  and other drivers have 
the same problem, but mostly don't inform you about that.

Greetings,
Helge

      reply	other threads:[~2001-10-13 15:19 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-10-13 14:21 [parisc-linux] disks not recognized by new 53c700/53c710 driver Albert Strasheim
     [not found] ` <200110082146.PAA00640@puffin.external.hp.com>
2001-10-13 14:27   ` [parisc-linux] disks not recognized by new 53c700/53c710 driver (was [parisc-linux-cvs] linux rhirst) Albert Strasheim
2001-10-13 14:42     ` Helge Deller
2001-10-13 14:59       ` Matthew Wilcox
2001-10-13 15:05         ` Helge Deller
2001-10-13 15:51         ` Albert Strasheim
     [not found]     ` <3BC851AB.7968C3D5@esiee.fr>
2001-10-13 14:44       ` Albert Strasheim
2001-10-13 14:51         ` Thomas Marteau
     [not found]     ` <20011013144315.768285B124@optical.cyberhost.co.za>
2001-10-13 14:45       ` Albert Strasheim
2001-10-13 14:59         ` Albert Strasheim
2001-10-13 15:18           ` Helge Deller [this message]

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