sys_attrs_pci(5)sys_attrs_pci(5)NAMEsys_attrs_pci - pci subsystem attributes
DESCRIPTION
This reference page lists and describes attributes for the PCI (pci)
kernel subsystem. Refer to the sys_attrs(5) reference page for an
introduction to the topic of kernel subsystem attributes.
For this subsytem, users should modify only the following attribute and
do so only for the purpose described. Any other visible attributes can‐
not or should not be modified.
A bit-mask setting that allows the developer of PCI hardware and
softwareto determine the PCI configuration parameters on an
Alpha system based on the PCI bus. By setting PCI_Devel‐
oper_Debug to different values, a variety of hardware-related or
software-related information about all PCI devices on an
AlphaServer are printed out at system bootstrap time. If load‐
able drivers are used, loadable configuration data is also
printed out on execution of the sysconfig -c command.
Refer to the /usr/include/io/dec/pci/pci_debug.h file for valid
bit-field settings for this attribute. The pci_debug.h file
contains macro definitions that state the type of information
that is printed out if PCI_Developer_Debug is set to a particu‐
lar value. Any combination of the bit-flags is valid. For exam‐
ple, the value 0x70 allows the hardware or software developer to
see the PCI configuration header information that the kernel
reads or assigns to PCI devices.
Default value: 0
Minimum value: 0
Maximum value: FFFFFFFF(16)SEE ALSOsys_attrs(5)
Writing PCI Bus Device Drivers
sys_attrs_pci(5)
