attached via PCI-Express:
The previous code first checked that the bge ASIC-revision matched the
5750 ASIC-revisoin (the bcm5721 has the same ASIC revision). However, the
bcm5752 is also a PCI-Express device, but has a different ASIC revision.
Thus, we were setting sc->bge_pcie to zero for bcm5752s, which in turn
causes bge_reset() to not perform required PCI-Express setup.
The test for a 5750 ASIC revision may (or may not) have been carried
across from the FreeBSD bge(4) driver. FreeBSD's bge(4) does not
properly detect or handle post-5750 bge devices. Instead, FreeBSD's
bge(4) keeps a sofc copy of the ASIC revision, and for post-5750
devices (5752, 5714, ...) overwrites that softc copy of the
ASIC-revision with the 5750 ASIC revision. Thus, the test (mutatis
mutandis, using FreeBDS's softc asic-revision field), was correct for
FreeBSD; but manifestly incorrect for NetBSD.
Mark Davies (mark at mcs.vuw.ac..nz) has confirmed via private email
that this change fixes PR kern/kern/33509: his bcm5752 now works.
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