CAM framework for FLASH devices

[geoffrey levand]

The interface to the PS3 flash device is NOT like normal NOR/NAND flash interfaces.
The interface to the PS3 FLASH is abstracted by the hypervisor and it looks like HDD to FreeBSD but has several logical units like SCSI devices. The flash device supports write, read and flush operation. Sector size is 512 byte. But it doesn't support any ATA or SCSI commands except flush.


23 сентября 2011, 18:45 от "Daniel O'Connor" <doconnor at gsoft.com.au>:
> 
> On 23/09/2011, at 22:31, geoffrey levand wrote:
> > Could CAM framework be used for devices which do not support SCSI or ATA commands natively, e.g. FLASH devices ?
> > I didn't find any examples for this case.
> > I'm developing PS3 flash device driver. Or is disk framework better in this case ?
> > I used CAM for PS3 CDROM driver but it supports SCSI commands natively and
> > i liked it very much so i would like to use it for FLASH devices too.
> 
> I don't think so - I think you want a GEOM class, e.g...
> http://osdir.com/ml/freebsd-geom/2009-04/msg00008.html
> 
> (I haven't really looked in detail though..)
> 
> --
> Daniel O'Connor software and network engineer
> for Genesis Software - http://www.gsoft.com.au
> "The nice thing about standards is that there
> are so many of them to choose from."
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