svn commit: r189367 - head/sys/dev/pci

[M. Warner Losh]

In message: <1236218572.1384.19.camel at widget.2hip.net>
            Robert Noland <rnoland at FreeBSD.org> writes:
: On Wed, 2009-03-04 at 13:56 -0700, M. Warner Losh wrote:
: > In message: <200903041823.n24INmcc049524 at svn.freebsd.org>
: >             Robert Noland <rnoland at 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.

It isn't in 2.2, and even after 2.3 it is "optional".

Warner