- Sun GigaSwift Ethernet Adapter Installation and User's Guide (February 2003)

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.
TABLE 4-9 PCI Bus Interface Parameters
Parameter Description
tx-dma-weight Determine the multiplication factor for granting credit to the TX
side during a weighted round robin arbitration. Values are 0 to 3.
(Default=0) Zero
means 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 traffic is continuously arriving its priority will be 8 times
greater than TX to access the PCI
rx-dma-weight Determine the multiplication factor for granting credit to the RX
side during a weighted round robin arbitration. Values are 0 to 3.
(Default=0)
infinite-burst Allows the infinite burst capability to be utilized. When this is in
effect and the system supports infinite burst, the adapter will not
free the bus until complete packets are transferred across the bus.
Values are 0 or 1. (Default=0)
disable-64bit Switches off 64 bit capability of the adapter. In some cases, it is
useful to switch off this feature.
Values are 0 or 1. (Default=0, which enables 64 bit capability)