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Explicitely enable queued invalidation completion interrupt when the

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queue is started, not relying on the interrupt remaping method to
happen.  Also disable interrupts when shooting down the queue.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2015-05-29 09:17:59 +00:00
parent c06184c814
commit 35725a97c4
1 changed files with 2 additions and 0 deletions
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2
sys/x86/iommu/intel_qi.c
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@ -411,6 +411,7 @@ dmar_init_qi(struct dmar_unit *unit)
ics = DMAR_ICS_IWC;
dmar_write4(unit, DMAR_ICS_REG, ics);
}
dmar_enable_qi_intr(unit);
DMAR_UNLOCK(unit);
return (0);
@ -434,6 +435,7 @@ dmar_fini_qi(struct dmar_unit *unit)
dmar_qi_advance_tail(unit);
dmar_qi_wait_for_seq(unit, &gseq, false);
/* only after the quisce, disable queue */
dmar_disable_qi_intr(unit);
dmar_disable_qi(unit);
KASSERT(unit->inv_seq_waiters == 0,
("dmar%d: waiters on disabled queue", unit->unit));