RE: DPT I2O RAID and Linux I2O

Patrick Allaire
2001-05-02T21:19:41Z

Its a CompactPCI system from Ziatech. We have 2 computers in it. 1 Master
(host) and 1 Slave (local). The master one is a Ziatech 5502 and the slave
is a Ziatech 5541.

The slave computer is isolated from the pci bus with a non-transparent
pci-to-pci bridge : INTEL (DEC) 21554

Basicly I have to transmit data between the host and the local system by the
pci bus.

> -----Message d'origine-----
> De : Alan Cox [mailto:alan@lxorguk.ukuu.org.uk]
> Envoye : May 2, 2001 5:19 PM
> A : Patrick Allaire
> Cc : Alan Cox; linux-kernel@vger.kernel.org
> Objet : Re: DPT I2O RAID and Linux I2O
>
>
> > If I understand correctly, some vendor would put I2O messaging
> hardware but
> > they would use it in a non-standard way ? So, if they dont
> support the I2O
> > protocol with their hardware, I will have to do it in another way...
> >
> > Is there a simple way to find out if my device support I2O
> protocol ? Maybe
> > its written in the BAR or in the CSR, but does linux find those devices
> > automaticly ? or do I have to do it in my module ? If I must do
> it myself,
> > do you know any device that is doing something like I do ? so I
> could look
> > at the code.
>
> If its running as an I2O device, it will be class I2O PCI and
> it'll have about
> 300K+ of firmware (probably vxworks) loaded onto it and a chunk
> of RAM. WHat
> sort of device is this ?
>
>
>