alees24

This PR combines two interconnected changes: - Interrupt type alignment (change fmt_threshold and rx_threshold to Status) (#21209). - Introduction of watermarks/thresholds on target FIFOs, introducing 'acq_threshold' and 'tx_threshold' as Status...

[dv,usbdev] Failing USBDEV block-level DV tests

1

### Description This issue exists to collect and track failing USBDEV block-level DV tests: - [ ] usbdev_csr_bit_bash - "(usb20_driver.sv:282) [uvm_test_top.env.m_usb20_agent.driver] timeout waiting for usb_pullup" (Agent should surely not be...

[usbdev] FIFO state inaccessible to software

4

### Description Correct operation of the usbdev block relies upon the software knowing the buffer IDs passed to the Available Buffer FIFO (avbuffer) and not using those buffers (queueing them...

[usbdev_swdrive_test] SW pin driving test

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Passing Verilator top-level test that exercises software pin driving, using a new bypass mode in the interface to the DPI model. Software-driven outputs are propagated straight back to the input...

Add a test sequence for the additional Data Toggle restore functionality. This sequence first performs some basic tests using the CSR interface and then brings up the USB connection and...

[i2c,dv] Failing block level DV tests as a result of changes.

3

### Description This issue tracks the state of block level I2C tests, broken or made less reliable by DD work for prod. Probably failing/unreliable already: i2c_target_stress_all_with_rand_reset PR [#21621](https://github.com/lowRISC/opentitan/pull/21621) at this...

This PR adds a sequence that subjects the DUT to USB Bus Resets or IP block resets during the transmission or reception of packet data. Although the relevant logic in...

The sequence `usbdev_resume_link_active` was recently modified and does now use randomization to control timing and state transitions.

[dv,usbdev] Remaining DV improvements

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### Description This item gathers a few lingering, perfective DV improvements following the push for V2: - [ ] usbdev_iso_retraction probably deserved a little experimental adjustment of time delays to...

### Description This is a minor, perfective improvement. A bit stuffing violation has occurred if the received packet data concludes with 6 '1' bits and no additional '0' bit before...