Qlogic FastLinQ 3400 Series, Руководство пользователя, Страница: 274 / 287

17–User Diagnostics in DOS
Diagnostic Test Descriptions
246 83840-546-00 E
C8 DMA Engine Verifies 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 per-
formed to ensure data integrity. The DMA write test also
verifies that DMA writes do not corrupt the neighboring
host memory.
C9 VPD Exercises the Vital Product Data (VPD) interface using
PCI configuration cycles and requires a proper boot-
code to be programmed into the non-volatile memory. If
no VPD data is present (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.
C11 FIO Events 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.
Group D: Ethernet Traffic Tests
D1 MAC Loopback Enables MAC loopback mode in the adapter and trans-
mits 5000 Layer 2 packets of various sizes. As the
packets are received back by QLogic 8400/3400 Series
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.
D2 PHY Loopback Enables PHY loopback mode in the adapter and trans-
mits 5000 Layer 2 packets of various sizes. As the
packets are received back by QLogic 8400/3400 Series
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.
Table 17-2. Diagnostic Tests (Continued)
Test
Description
Number Name