RE: Message Signalled Interrupt Support

[Lame Brooks-G14738 <brooks.lame@motorola.com>]

MSI appears extremely useful in applications with many sources of interrupts
in a device and/or many devices on the PCI bus.  It also looks useful in
slave processor applications.  Motorola may use MSI in a new motherboard
peripheral device currently under development.  However, I am a little out
of touch with the current thoughts on MSI with CompactPCI
peripheral/slave/multiple-host processors; so, you may look for some other
PICMG guys to respond.  
--
Brooks Lame'
Crisis/Design Engineer,  Motorola Monterey Design Center
brooks_lame@mcg.mot.com


> -----Original Message-----
> From: Brad Hosler [mailto:brad@pc2.com]
> Sent: Sunday, 20 February, 2000 15:29
> To: pci-sig@znyx.com
> Subject: Message Signalled Interrupt Support
> 
> 
> PCI 2.2 defines a Message Signalled Interrupt (MSI) feature, 
> to allow the
> card
> to issue an interrupt as a PCI write message.
> 
> Its presenting a "who-comes-first" scenario.  There are SW 
> developers that
> want to support this feature; however, they want to know if 
> there are IHV's
> who are adding support to their cards.  If there is no IHV 
> interest, SW
> support
> may be pulled due to lack of validation.
> 
> Are there any cards available or that will be available that 
> will support
> the MSI capability?
> 
> 
> 
>