CVS commit: src/sys/dev/ic

["Jared D. McNeill" <jmcneill%netbsd.org@localhost>]

Module Name:    src
Committed By:   jmcneill
Date:           Thu May 28 09:33:30 UTC 2026

Modified Files:
        src/sys/dev/ic: dwc_eqos.c dwc_eqos_reg.h dwc_eqos_var.h

Log Message:
eqos: Various performance improvements.

- Use BUS_DMA_COHERENT for ring descriptors, allowing us to remove
  the descriptor padding (which increased memory usage and bandwidth).
  Be very careful to avoid unnecessary reads and writes of uncached
  memory!
- Defer TX/RX to a workqueue. This is mostly to help the scheduler, which
  doesn't seem to understand that a CPU busy processing interrupts is
  maybe not the best place to run a process on an otherwise idle system.


To generate a diff of this commit:
cvs rdiff -u -r1.43 -r1.44 src/sys/dev/ic/dwc_eqos.c
cvs rdiff -u -r1.10 -r1.11 src/sys/dev/ic/dwc_eqos_reg.h
cvs rdiff -u -r1.11 -r1.12 src/sys/dev/ic/dwc_eqos_var.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.