> > > You should look at recent PCI revisions, however, and the MSI > > (message-signalled interrupt) mechanism which, if implemented widely, > > will solve at least some of the major problems with PCI and interrupts. > > Thanks for the pointer; I haven't been following PCI standards > recently, except for speed and size extensions. It looks like > it's time to look at them yet again. Do you know if this is going > to be mandatory for PCI-X devices? I don't think it will be very > widely used until it's required. 8^(.
MSI isn't mandatory; it requires host chipset support. I've read several new peripherals claiming to support it, but haven't been looking at host chipsets to see if it's been picked up there. <fantasy> What would be *really* nice would be a 'shadow' MSI implementation where the host chipset would emulate MSI for non-MSI peripherals. </fantasy> To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
