diff mbox series

[v2,3/7] dmaengine: idxd: move interrupt handle assignment

Message ID 163528417767.3925689.7730411152122952808.stgit@djiang5-desk3.ch.intel.com (mailing list archive)
State Accepted
Commit eb0cf33a91b46cd50b590d032471f7f977d5a92a
Headers show
Series dmaengine: idxd: Add interrupt handle revoke support | expand

Commit Message

Dave Jiang Oct. 26, 2021, 9:36 p.m. UTC 
In preparation of supporting interrupt handle revoke event, move the
interrupt handle assignment to right before the descriptor to be submitted.
This allows the interrupt handle revoke logic to assign the latest
interrupt handle on submission.

Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
 drivers/dma/idxd/submit.c |   14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/drivers/dma/idxd/submit.c b/drivers/dma/idxd/submit.c
index d4688f369bc2..df02c5c814e7 100644
--- a/drivers/dma/idxd/submit.c
+++ b/drivers/dma/idxd/submit.c
@@ -21,15 +21,6 @@  static struct idxd_desc *__get_desc(struct idxd_wq *wq, int idx, int cpu)
 	if (device_pasid_enabled(idxd))
 		desc->hw->pasid = idxd->pasid;
 
-	/*
-	 * On host, MSIX vecotr 0 is used for misc interrupt. Therefore when we match
-	 * vector 1:1 to the WQ id, we need to add 1
-	 */
-	if (wq->ie->int_handle == INVALID_INT_HANDLE)
-		desc->hw->int_handle = wq->id + 1;
-	else
-		desc->hw->int_handle = wq->ie->int_handle;
-
 	return desc;
 }
 
@@ -160,6 +151,11 @@  int idxd_submit_desc(struct idxd_wq *wq, struct idxd_desc *desc)
 	 */
 	if (desc->hw->flags & IDXD_OP_FLAG_RCI) {
 		ie = wq->ie;
+		if (ie->int_handle == INVALID_INT_HANDLE)
+			desc->hw->int_handle = ie->id;
+		else
+			desc->hw->int_handle = ie->int_handle;
+
 		llist_add(&desc->llnode, &ie->pending_llist);
 	}