On Wed, 2009-03-04 at 13:56 -0700, M. Warner Losh wrote: > In message: <200903041823.n24inmcc049...@svn.freebsd.org> > Robert Noland <rnol...@freebsd.org> writes: > : Author: rnoland > : Date: Wed Mar 4 18:23:48 2009 > : New Revision: 189367 > : URL: http://svn.freebsd.org/changeset/base/189367 > : > : Log: > : Extend the management of PCIM_CMD_INTxDIS. > : > : We now explicitly enable INTx during bus_setup_intr() if it is needed. > : Several of the ata drivers were managing this bit internally. This is > : better handled in pci and it should work for all drivers now. > : > : We also mask INTx during bus_teardown_intr() by setting this bit. > : > : Reviewed by: jhb > : MFC after: 3 days > > Note: the INTxDIS bit is new in PCI 3.0, and has no effect on earlier > devices. This should be highlighted in the comments somewhere...
It is documented in 2.3 as well, I'm not sure about previous versions of the spec though. robert. > Warner -- Robert Noland <rnol...@freebsd.org> FreeBSD
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