Complaints

Posted Dec 2, 2013 11:32 UTC (Mon) by cesarb (subscriber, #6266)
In reply to: Complaints by plugwash
Parent article: ACPI for ARM?

Won't storage and network on servers be behind a PCI bus? Then you only need to find the PCI registers and windows, and these could be described by simple tables. Timers should be similarly simple.

Complaints

Posted Dec 2, 2013 13:21 UTC (Mon) by broonie (subscriber, #7078) [Link]

There's no reason to assume that this would be the case - it's not how existing designs for these integrated SoCs are implemented and there's no pressing reason to do so from an electrical engineering point of view. PCI will be in use and probably will be used for the highest performance devices but for the bog standard integrated option it's less clear.

Complaints

Posted Dec 2, 2013 23:26 UTC (Mon) by plugwash (subscriber, #29694) [Link]

"Won't storage and network on servers be behind a PCI bus?"
The arm server stuff I have seen mostly seems to integrate storage and/or network into the SoC itself with no need for PCI. The arm server market is very much focussed on "lots of small servers" not "one big server".

PCs create "fake" PCI busses for storage and network controllers that are really integrated into the chipset. I guess in theory there is no reason an arm based platform couldn't do the same but i'm not aware of any that do.