Datasheet
47
Errata—Intel
®
82599 10 GbE Controller
Workaround:
If RXCTRL.RXEN is clear, set SECRXCTL.RX_DIS and wait for a SECRXSTAT.SECRX_RDY indication
before configuring the flow director filters.
This workaround is implemented in the Intel ixgbe driver 3.8.21
Status: B0=Yes; NoFix
54 PF's MSI TLP Might Contain the Wrong Requester
ID When a VF Uses MSI-X
Problem:
When using IOV, if a PF uses MSI interrupts and one or more VFs use MSI-X interrupts, some of the
MSI TLPs for the PF might contain the wrong Requester ID.
Implication:
There could be missing interrupts on the PF since the incorrect Requester ID could result in the
virtualization mechanism misrouting or dropping TLPs.
Workaround:
If any VFs use MSI-X, all PFs should also use MSI-X.
Status: B0=Yes; NoFix
55 XAUI Interface Might not Be Able to Link After a
Specific Reset Sequence
Problem:
When the 82599 is programmed to XAUI link (AUTOC.LMS = 001b, AUTOC.10G_PMA_PMD_Parallel =
00b), its internal clocks are set to 10 GbE speed mode. If AUTOC.Restart_AN is asserted before link is
achieved (such as when link partner is still in idle) the device is momentarily put in 1 GbE speed and
then returns to 10 GbE. There is an internal mechanism to synchronize this speed switching. Due to a
design issue, a specific circuit in the MAC/PHY interface area might miss this synchronization and the
transmitter might start to transmit unaligned data on one or more lanes. This scenario might occur
when the 82599 software device driver is initialized before enabling the link partner XAUI transmitter.
Even after the previous scenario, the link can be restored by issuing a Link Reset (CTRL.LRST).
The issue does not happen if using one of the following procedures:
1. Assert AUTOC.Restart_AN according to the procedure described in Specification Change - MAC Link
Setup and Auto Negotiation.
2. Enable the link partner XAUI transmitter before enabling the 82599.
3. Hold the Auto Neg internal state machine in idle state at power on from the EEPROM and release it
during software device driver initialization.
Implication:
XAUI interface might not be able to establish a link.