On Thursday, December 10, 2015 04:40:38 PM Andrew Turner wrote: > Author: andrew > Date: Thu Dec 10 16:40:38 2015 > New Revision: 292064 > URL: https://svnweb.freebsd.org/changeset/base/292064 > > Log: > Add support for the GICv2M extension to the GICv2 interrupt controller. > This is (oddly) specified in the ARM Server Base System Architecture. It > extends the GICv2 to support MSI and MSI-X interrupts, however only the > latter are currently supported.
MSI and MSI-X only different in the config registers used to configure them in the PCI function. The on-wire format of the PCI transaction is identical, so from a PIC's perspective there should be no difference. They are all just MSI messages. This is why both MSI and MSI-X interrupt resources use the same PCIB_MAP_MSI() method to map a given IRQ to an (address, data) tuple. -- John Baldwin _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "[email protected]"
