Differential D58033

fwohci: fix LPS delay, PHY_INT storm, and SID timeout recovery
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Authored by seuros on Jul 3 2026, 8:49 PM.

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rG4b3d03566821: fwohci: fix LPS delay, PHY_INT storm, and SID timeout recovery

Summary

Fixed the post-LPS delay from 500us to the IEEE 1394a-2000 s6.1 mandated
10ms ceiling. Handled PHY_INT by clearing W1C status bits in register 5
(masked ISBR to avoid spurious bus resets). Added a SID timeout callout
that recovers the state machine when a remote device fails to complete
self-ID. Fixed FW_PHY_SPD operator precedence and gated noisy messages
behind bootverbose/firewire_debug.

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rG FreeBSD src repository

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Event Timeline

seuros created this revision.Jul 3 2026, 8:49 PM

Herald added a subscriber: imp. · View Herald TranscriptJul 3 2026, 8:49 PM

seuros requested review of this revision.Jul 3 2026, 8:49 PM

Harbormaster completed remote builds in B74516: Diff 181276.Jul 3 2026, 8:49 PM

seuros added projects: drivers, firewire.Jul 3 2026, 8:51 PM

Note: Linux has 50ms delay. The spec has 10ms.

The hardware i tested did not need more than 10ms.

seuros added a reviewer: firewire.Jul 7 2026, 4:20 PM

seuros added a child revision: D57914: fwcamctl: add control utility for fwcam(4) IIDC FireWire cameras.Jul 7 2026, 8:10 PM

seuros added a child revision: D58090: fwcam: add dynamic resolution and frame rate support.

approved; tested locally

This revision is now accepted and ready to land.Jul 7 2026, 8:42 PM

Closed by commit rG4b3d03566821: fwohci: fix LPS delay, PHY_INT storm, and SID timeout recovery (authored by seuros, committed by adrian). · Explain WhyJul 8 2026, 5:42 AM

This revision was automatically updated to reflect the committed changes.

adrian added a commit: rG4b3d03566821: fwohci: fix LPS delay, PHY_INT storm, and SID timeout recovery.

Revision Contents
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Path

Size

sys/

dev/

firewire/

59 lines

3 lines

Diff 181511

sys/dev/firewire/fwohci.c

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sys/dev/firewire/fwohcivar.h

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