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dmaengine: idxd: move interrupt handle assignment

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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>
Link: https://lore.kernel.org/r/163528417767.3925689.7730411152122952808.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Dave Jiang 2021-10-26 14:36:17 -07:00 committed by Vinod Koul
parent 8b67426e05
commit eb0cf33a91
1 changed files with 5 additions and 9 deletions
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14
drivers/dma/idxd/submit.c
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@ -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);
}