octeontx2-af: Register for CGX lmac events

Added support in RVU AF driver to register for
CGX LMAC link status change events from firmware
and managing them. Processing part will be added
in followup patches.

- Introduced eventqueue for posting events from cgx lmac.
  Queueing mechanism will ensure that events can be posted
  and firmware can be acked immediately and hence event
  reception and processing are decoupled.
- Events gets added to the queue by notification callback.
  Notification callback is expected to be atomic, since it
  is called from interrupt context.
- Events are dequeued and processed in a worker thread.

Signed-off-by: Linu Cherian <lcherian@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
index e9021a813889..2033f42c3226 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -1564,10 +1564,11 @@ static int rvu_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	err = rvu_register_interrupts(rvu);
 	if (err)
-		goto err_mbox;
+		goto err_cgx;
 
 	return 0;
-
+err_cgx:
+	rvu_cgx_wq_destroy(rvu);
 err_mbox:
 	rvu_mbox_destroy(rvu);
 err_hwsetup:
@@ -1589,6 +1590,7 @@ static void rvu_remove(struct pci_dev *pdev)
 	struct rvu *rvu = pci_get_drvdata(pdev);
 
 	rvu_unregister_interrupts(rvu);
+	rvu_cgx_wq_destroy(rvu);
 	rvu_mbox_destroy(rvu);
 	rvu_reset_all_blocks(rvu);
 	rvu_free_hw_resources(rvu);