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If a node does not come up on the SP Switch, always check this attribute using
the following command:
# SDRGetObjects switch_responds adapter_config_status
This may give a good indication of where the problems lie. To assist with the
understanding of these attributes, here is a list that summarizes the
configuration of the TB3 switch adapter for the SP Switch (cfgtb3):
1. Checks the ODM database for the
css device (odm_fail).
2. Loads the xilinx microcode for the adapter (xilinx_system_fail and
xilinx_load_fail).
•
There are distinct xilinx loads for the 2 types of adapter
−
tb2_xilinx_file
−
tb3_xilinx_file
3. Loads the device driver (dd_load_fail).
•
There are distinct drivers for the depending on the type of adapter
−
cssdd2
−
cssdd3
4. If the special device file /dev/css0 does not exist, then it creates it
(genmajor_fail, genminor_fail and make_special_fail).
5. Calls the device driver to configure the device (build_dds_fail and
dd_config_fail).
6. Marks the device css0 as available.
7. Executes POST diagnostics with the different routines depending on the type
of adapter (diag_fail).
8. Loads and initializes the CSS kernel extension which provides support for
fault service and DMA (fs_load_fail and fs_init_fail).
9. Sets
switch_responds attribute adapter_config_status to css_ready in the SDR
(for TB3 only).
The three attribute values not explained so far are:
•
chkslot_fail
•
busresolv_fail
•
getslot_fail
After the check is made to test whether the ODM attributes are present for the
adapter, some tests are carried out on the bus to detect which slot the adapter is
in.
From the value in this object class, it is possible to find out the area in which the
failure occurred. This is a major diagnostic benefit for the TB3 adapter.
For completeness, here is the
unconfigure method (ucfgtb3):
1. Performs the ODM check for the TB3
2. Disables the TB3 adapter
3. Unloads the CSS kernel extension
4. Kills the CSS daemons
5. Unloads the TB3 device driver
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