FW: P1394> connection for Function or Service

FW: P1394> connection for Function or Service

Nagasaka Fumio Nagasaka.Fumio at exc.epson.co.jp
Fri Oct 16 21:40:19 EDT 1998


> Hi Eric,
> 
> If 1394 PWG chooses “connections over multiple LUNs”, does new Mac OS
> support device discovery which has a configuration ROM shown below?
> 
> UnitDir --->[ LUN0, LUN1, LUN2, …]
> 
> And may our driver invoke “Login(s)” to each LUN separately?
> Does Mac OS register each LUN as a separated entity in the name registry?
> Thank you,
> --------------------------------------------
> Fumio Nagasaka
> Epson Software Development Laboratory Inc.
> Tel +81 268 25 4111,  Fax +81 268 25 4627
> E-mail to nagasaka.fumio at exc.epson.co.jp
> 
> -----Original Message-----
> From:	Hitoshi Sekine [SMTP:hitoshis at MICROSOFT.com]
> Sent:	Saturday, October 17, 1998 3:56 AM
> To:	'Greg Shue'; Nagasaka Fumio
> Cc:	p1394 at pwg.org
> Subject:	RE: P1394> connection for Function or Service
> 
> > A larger issue with "current PC OS" implementation may be how
> > many outstanding requests can be supported at once by the SBP-2
> > driver.
> 
> I agree that it is a large issue with the implementation.  But, it is not
> clear to me that the SBP-2 is required to handle multiple logins or
> connections.  Who cases multiple connections per a single login?  I think
> we
> should be able to handle multiple connection on a single login or multiple
> logins.  These implementations are very different.
> 
> Thanks,
> Hitoshi
> 
> -----Original Message-----
> From: Greg Shue [mailto:gregs at sdd.hp.com]
> Sent: Friday, October 16, 1998 8:40 AM
> To: Nagasaka.Fumio at exc.epson.co.jp
> Cc: p1394 at pwg.org
> Subject: Re: P1394> connection for Function or Service
> 
> 
> > However, each service requires a multiplexed connection and
> > each connection requires flow control and send/receive queues.
> 
> Whether we multiplex connections over a login or have separate
> logins, each service is accessed over a connection, and each
> connection requires flow control and send/receive queues.
> This is a non-issue in the decision.
> 
> A larger issue with "current PC OS" implementation may be how
> many outstanding requests can be supported at once by the SBP-2
> driver.
> 
> -- 
> Greg Shue
> Hewlett-Packard Company
> All-in-One Division			        gregs at sdd.hp.com
> ----------------------------------------------------------------



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