FreeBSD ethernet on a Sun Ultra 20
peterjeremy at optushome.com.au
Mon Feb 26 09:46:47 UTC 2007
On 2007-Feb-25 13:40:39 +0100, Lars Tunkrans <lars.tunkrans at bredband.net> wrote:
>On Solaris10/OpenSolaris a file called /etc/driver_aliases is
>created which contains all the known PCI-DEVICE ID's
>known by the software ( devicedrivers ).
There's nothing similar in FreeBSD. Most drivers have a PCI ID table
embedded in them in some form but there's no defined interface for
querying a driver as to what PCI IDs it recognizes. Each driver is
responsible for deciding whether it can support a specific device or
not. That decision can be based on information other than just the
PCI ID. For example the RealTek 8139 and 8139C+ share the same PCI ID
but have different FreeBSD drivers (rl(4) and re(4), respectively).
Note that ISA devices (for example) don't have anything equivalent to
a PCI ID.
>FreeBSD has a very good list of supported Hardware that details
>which chipsets are supported.
That list is auto-generated from the section 4 man pages. If someone
wanted to annotate all the man pages with PCI IDs then the web page
would update automatically.
>Maybe this list now needs to be enhanced with the PCI device codes, as
>a device with the same generic name apperantly
>now can have several PCI Device codes.
This has always been the case. Compaq/HP (and probably other vendors)
regularly put vendor-specific PCI IDs into generic parts in their
systems. Conversely, changing the chips in systems without mentioning
this anywhere is also quite common (WLAN cards are notorious for this)
- this can mean that two cards with identical part numbers and
otherwise indistinguishable from the outside of the box can require
totally different drivers.
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