46 Sun GigaSwift Ethernet Adapter Installation and User’s Guide • February 2003
PCI Bus Interface Parameters
These parameters allow you to modify PCI interface features to gain better PCI
performance for a given application.
TABLE4-9 PCI Bus Interface Parameters
Parameter Description
tx-dma-weight Determine the multiplication factor for granting creditto the TX
side during a weighted roundrobin arbitration. Values are 0 to 3.
(Default=0) Zeromeans no extra weighting. The other values
are power of 2 extra weighting, on that traffic. For example
of tx-dma-weight = 0 and rx-dma-weight = 3 then as long as
RX trafficis continuously arriving its priority will be 8 times
greater than TX to access the PCI
rx-dma-weight Determine the multiplication factor for granting creditto the RX
side during a weighted roundrobin arbitration. Values are 0 to 3.
(Default=0)
infinite-burst Allows the infiniteburst capability to be utilized. When this is in
effectand the system supports infinite burst, the adapter will not
freethe bus until complete packets are transferred across the bus.
Valuesare 0 or 1. (Default=0)
disable-64bit Switches off64 bit capability of the adapter. In some cases, it is
useful to switch offthis feature.
Valuesare 0 or 1. (Default=0, which enables 64 bit capability)