freebsd-dev/sys/amd64/pci
Bill Paul ba3af76df7 Modify the pci_cfgdisable() routine to bring it more in line with
other OSes (Solaris, Linux, VxWorks). It's not necessary to write a 0
to the config address register when using config mechanism 1 to turn
off config access. In fact, it can be downright troublesome, since it
seems to confuse the PCI-PCI bridge in the AMD8111 chipset and cause
it to sporadically botch reads from some devices. This is the cause
of the missing USP ports problem I was experiencing with my Sun Opteron
system.

Also correct the case for mechanism 2: it's only necessary to write
a 0 to the ENABLE port.
2005-10-25 04:53:29 +00:00
..
pci_bus.c MFi386: pci attribute allocation fixes. 2005-09-18 01:42:43 +00:00
pci_cfgreg.c Modify the pci_cfgdisable() routine to bring it more in line with 2005-10-25 04:53:29 +00:00