Re: [patch 4/6] ps3: Disk Storage Driver
From: Arnd Bergmann
Date: Fri Jun 15 2007 - 10:41:59 EST
On Friday 15 June 2007, David Woodhouse wrote:
> On Fri, 2007-06-15 at 13:39 +0200, Geert Uytterhoeven wrote:
> > Add a Disk Storage Driver for the PS3:
> > - Implemented as a block device driver with a dynamic major
> > - Disk names (and partitions) are of the format ps3d%c(%u)
> > - Uses software scatter-gather with a 64 KiB bounce buffer as the hypervisor
> > doesn't support scatter-gather
> Any particular reason why this is done as a separate block device driver
> rather than as SCSI?
Because the hypervisor interface is based on tranferring blocks, not based
on SCSI commands like the one for the optical storage drive.
The first version of this driver actually was based on SCSI command emulation,
and in an earlier round of reviews it was decided to rewrite it to use the
simpler block interface directly.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/