Date: Sat, 14 Oct 2000 23:44:41 -0400 From: Jonathan Chen <jon+fbsd@spock.org> To: hackers@freebsd.org Subject: PCI secondary bus Message-ID: <20001014234441.F78298@spock.org>
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While writing the new cardbus code, I ran into a problem where certain
BIOSes (Dells in particular) does not initialize the pci configuration
space of the pci to cardbus bridge. On a "normal" laptop, the BIOS will
fill in a memory address, irq lines, and the secondary and subordinate bus
numbers. On a dell laptop, those would be left as 0. I could work around
the memory/irq issues, but I have no clue what to fill in for the secondary
and subordinate bus numbers. Is there a magical function (in kernel,
pcibios or otherwise) that would generate these values for me? And if not,
how do I get the numbers? Would it be alright if I assign an arbitrary
number as long as there is no conflict? Any help would be
appreciated. Thanks.
--
(o_ 1-2-1-2-1-2-1-2-1-2-1-2-1-2-1-2-1-2-1-2-1-2-1-2-1-2-1-2-1-2 _o)
\\\_\ Jonathan Chen jon@spock.org /_///
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