Author: cem
Date: Mon Aug 29 20:51:34 2016
New Revision: 305028
URL: https://svnweb.freebsd.org/changeset/base/305028
Log:
ioat(4): Add additional CTR tracing during reset
Modified:
head/sys/dev/ioat/ioat.c
Modified: head/sys/dev/ioat/ioat.c
==============================================================================
--- head/sys/dev/ioat/ioat.c Mon Aug 29 20:46:33 2016 (r305027)
+++ head/sys/dev/ioat/ioat.c Mon Aug 29 20:51:34 2016 (r305028)
@@ -1831,6 +1831,9 @@ ioat_reset_hw(struct ioat_softc *ioat)
ioat->resetting_cleanup = TRUE;
mtx_unlock(&ioat->cleanup_lock);
+ CTR2(KTR_IOAT, "%s channel=%u quiesced and drained", __func__,
+ ioat->chan_idx);
+
status = ioat_get_chansts(ioat);
if (is_ioat_active(status) || is_ioat_idle(status))
ioat_suspend(ioat);
@@ -1851,6 +1854,9 @@ ioat_reset_hw(struct ioat_softc *ioat)
chanerr = ioat_read_4(ioat, IOAT_CHANERR_OFFSET);
ioat_write_4(ioat, IOAT_CHANERR_OFFSET, chanerr);
+ CTR2(KTR_IOAT, "%s channel=%u hardware suspended", __func__,
+ ioat->chan_idx);
+
/*
* IOAT v3 workaround - CHANERRMSK_INT with 3E07h to masks out errors
* that can cause stability issues for IOAT v3.
@@ -1870,6 +1876,8 @@ ioat_reset_hw(struct ioat_softc *ioat)
}
ioat_reset(ioat);
+ CTR2(KTR_IOAT, "%s channel=%u hardware reset", __func__,
+ ioat->chan_idx);
/* Wait at most 20 ms */
for (timeout = 0; ioat_reset_pending(ioat) && timeout < 20; timeout++)
@@ -1919,11 +1927,16 @@ ioat_reset_hw(struct ioat_softc *ioat)
ioat_write_chancmp(ioat, ioat->comp_update_bus_addr);
ioat_write_chainaddr(ioat, ioat->ring[0]->hw_desc_bus_addr);
error = 0;
+ CTR2(KTR_IOAT, "%s channel=%u configured channel", __func__,
+ ioat->chan_idx);
out:
/* Enqueues a null operation and ensures it completes. */
- if (error == 0)
+ if (error == 0) {
error = ioat_start_channel(ioat);
+ CTR2(KTR_IOAT, "%s channel=%u started channel", __func__,
+ ioat->chan_idx);
+ }
/*
* Resume completions now that ring state is consistent.
@@ -1943,6 +1956,7 @@ out:
if (ioat->is_completion_pending)
callout_reset(&ioat->poll_timer, 1, ioat_poll_timer_callback,
ioat);
+ CTR2(KTR_IOAT, "%s channel=%u reset done", __func__, ioat->chan_idx);
mtx_unlock(IOAT_REFLK);
return (error);
_______________________________________________
svn-src-all@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
