Dell Broadcom NetXtreme Family of Adapters User Manual page 192

User Diagnostics: Broadcom NetXtreme II Network Adapter User Guide
NVM Access
C6 and Reset-
Corruption
Core-Reset
C7
Integrity
C8 DMA Engine
C9 VPD
C11 FIO Events
Group D: Ethernet Traffic Tests
MAC
D1
Loopback
PHY
D2
Loopback
D4 LSO
EMAC
D5
Statistics
D6 RPC
Please read all Restrictions and
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Verifies non-volatile memory (NVM) accesses (both read and write) initiated by one of the internal
CPUs. It tests for appropriate access arbitration among multiple entities (CPUs). It also checks for
possible NVM corruption by issuing a chip reset while the NVM block is servicing data.
Verifies that the chip performs its reset operation correctly by resetting the chip multiple times,
checking that the bootcode and the internal uxdiag driver loads/unloads correctly.
Verifies the functionality of the DMA engine block by performing numerous DMA read and write
operations to various system and internal memory locations (and byte boundaries) with varying
lengths (from 1 byte to over 4 KB, crossing the physical page boundary) and different data patterns
(incremental, fixed, and random). CRC checks are performed to ensure data integrity. The DMA
write test also verifies that DMA writes do not corrupt the neighboring host memory.
Exercises the Vital Product Data (VPD) interface using PCI configuration cycles and requires a proper
bootcode to be programmed into the non-volatile memory. If no VPD data is present (i.e., the VPD
NVM area is all 0s), the test first initializes the VPD data area with non-zero data before starting the
test and restores the original data after the test completes.
Verifies that the event bits in the CPU's Fast IO (FIO) interface are triggering correctly when a
particular chip events occur, such as a VPD request initiated by the host, an expansion ROM request
initiated by the host, a timer event generated internally, toggling any GPIO bits, or accessing NVM.
Enables MAC loopback mode in the adapter and transmits 5000 Layer 2 packets of various sizes. As
the packets are received back by Broadcom NetXtreme II User Diagnostics, they are checked for
errors. Packets are returned through the MAC receive path and never reach the PHY. The adapter
should not be connected to a network.
Enables PHY loopback mode in the adapter and transmits 5000 Layer 2 packets of various sizes. As
the packets are received back by Broadcom NetXtreme II User Diagnostics, they are checked for
errors. Packets are returned through the PHY receive path and never reach the wire. The adapter
should not be connected to a network.
Verifies the functionality of the adapter's Large Send Offload (LSO) support by enabling MAC
loopback mode and transmitting large TCP packets. As the packets are received back by Broadcom
NetXtreme II User Diagnostics, they are checked for proper segmentation (according to the selected
MSS size) and any other errors. The adapter should not be connected to a network.
Verifies that the basic statistics information maintained by the chip is correct by enabling MAC
loopback mode and sending Layer 2 packets of various sizes. The adapter should not be connected
to a network.
Verifies the Receive Path Catch-up (RPC) block by sending packets to different transmit chains. The
packets traverse the RPC logic (though not the entire MAC block) and return to the receive buffers
as received packets. This is another loopback path that is used by Layer 4 and Layer 5 traffic within
the MAC block. As packets are received back by Broadcom NetXtreme II User Diagnostics, they are
checked for errors. The adapter should not be connected to a network.
Disclaimers.