Testplan

Testpoints

Stage V1 Testpoints

`xbar_smoke`

Test: xbar_smoke

Sequentially test each host to access any device

Stage V2 Testpoints

`xbar_base_random_sequence`

Test: xbar_random

Enable all hosts to randomly send transactions to any device

`xbar_random_delay`

Tests:

xbar_smoke_zero_delays
xbar_smoke_large_delays
xbar_smoke_slow_rsp
xbar_random_zero_delays
xbar_random_large_delays
xbar_random_slow_rsp

Control delays through plusargs to create tests for below types of delay

Zero delay for sending a/d_valid and a/d_ready
Large delay from 0 ~ 1000 cycles
Small delay (0-10 cycles) for a_channel, large delay (0-1000 cycles) for d_channel

`xbar_unmapped_address`

Tests:

xbar_unmapped_addr
xbar_error_and_unmapped_addr
Host randomly drives transactions with mapped and unmapped address
Ensure DUT returns d_error=1 if address is unmapped and transaction isn’t passed down to any device

`xbar_error_cases`

Tests:

xbar_error_random
xbar_error_and_unmapped_addr
Drive any random value on size, mask, opcode in both channels
Ensure everything just pass through host to device or device to host

`xbar_all_access_same_device`

Tests:

xbar_access_same_device
xbar_access_same_device_slow_rsp
Randomly pick a device, make all hosts to access this device
If the device isn’t accessible for the host, let the host randomly access the other devices

`xbar_all_hosts_use_same_source_id`

Test: xbar_same_source

Test all hosts use same ID at the same same

`xbar_stress_all`

Tests:

xbar_stress_all
xbar_stress_all_with_error
Combine all sequences and run in parallel
Add random reset between each iteration

`xbar_stress_with_reset`

Tests:

xbar_stress_all_with_rand_reset
xbar_stress_all_with_reset_error
Inject reset while stress_all is running, after reset is completed, kill the stress seq and then start a new stress seq
Run a few iteration to ensure reset doesn’t break the design