Device probe issue with an em(4) compatible device
From: Brenden Grace (bcg_at_intelli7.com)
Date: 09/29/04
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To: freebsd-hackers@freebsd.org Date: Wed, 29 Sep 2004 12:51:47 -0400
I have a somewhat limited knowledge of FreeBSD's device system, so
forgive (and correct) me if I get any of this wrong.
I am writing a network driver for a em(4) compatible chip. I know the
specific subvendor id and subdevice id, but the em(4) driver seems to
attach to the device before my driver can. Is this because the em_probe
is occurring before my probe AND because the em_probe is allowing for
PCI_ANY_ID for subvendor subdevice ids (the vendor and device ids of my
card are identical to an actual Intel card)? If so the solution then
would be to have the em driver return a number less than zero in
em_probe and my driver's probe to return a number greater than the
em_probes's return?
On a side not, would it also not be more correct for FreeBSD drivers in
the tree to return a negative number for _any_ device that accepts a
PCI_ANY_ID value?
Thanks in advance for the clarification/help.
-- Brenden C. Grace Intelli7 _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"
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