test_macos_xdma_hardware

Attributes

pytestmark

Functions

test_macos_xdma_hardware_discovers_dau_identity() → None
_scratch_addresses() → tuple[int, int]	Two device addresses this test may overwrite. Which memory is free to
test_concurrent_transfers_on_both_engines_round_trip() → None	The H2C and C2H engines share the dext's one descriptor ring. Two

Module Contents

test_macos_xdma_hardware.pytestmark

test_macos_xdma_hardware.test_macos_xdma_hardware_discovers_dau_identity() → None

test_macos_xdma_hardware._scratch_addresses() → tuple[int, int]

Two device addresses this test may overwrite. Which memory is free to clobber is board geometry, so it comes from the bench, not from here.

test_macos_xdma_hardware.test_concurrent_transfers_on_both_engines_round_trip() → None

The H2C and C2H engines share the dext’s one descriptor ring. Two threads each write a pattern and read it back, so their transfers interleave across both engines; any transfer that ran on a chain the other thread rewrote returns the wrong bytes or fails.