Commit eb0cf33a authored by Dave Jiang's avatar Dave Jiang Committed by Vinod Koul
Browse files

dmaengine: idxd: move interrupt handle assignment 



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: default avatarKevin Tian <kevin.tian@intel.com>
Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/163528417767.3925689.7730411152122952808.stgit@djiang5-desk3.ch.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 8b67426e

drivers/dma/idxd/submit.c

+5 −9
Original line number Diff line number Diff line
@@ -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);

	}