[PATCH 6/9] common/cnxk: free tm resources in order from leaf to root

[Nithin Dabilpuram <ndabilpuram@marvell.com>]

Now that kernel is clearing parent info that is needed for flush,
free the resources in order from leaf to root so that when SMQ flush
is called there is always hierarchy present from SMQ till TL1.

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
---
 drivers/common/cnxk/roc_nix_tm.c | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

diff --git a/drivers/common/cnxk/roc_nix_tm.c b/drivers/common/cnxk/roc_nix_tm.c
index 4ced7a052f..6d470f424d 100644
--- a/drivers/common/cnxk/roc_nix_tm.c
+++ b/drivers/common/cnxk/roc_nix_tm.c
@@ -1817,6 +1817,7 @@ nix_tm_free_resources(struct roc_nix *roc_nix, uint32_t tree_mask, bool hw_only)
 	enum roc_nix_tm_tree tree;
 	uint32_t profile_id;
 	int rc = 0;
+	int hw_lvl;
 
 	for (tree = 0; tree < ROC_NIX_TM_TREE_MAX; tree++) {
 		if (!(tree_mask & BIT(tree)))
@@ -1825,20 +1826,25 @@ nix_tm_free_resources(struct roc_nix *roc_nix, uint32_t tree_mask, bool hw_only)
 		plt_tm_dbg("Freeing resources of tree %u", tree);
 
 		list = nix_tm_node_list(nix, tree);
-		next_node = TAILQ_FIRST(list);
-		while (next_node) {
-			node = next_node;
-			next_node = TAILQ_NEXT(node, node);
+		/* Flush and free resources from leaf */
+		for (hw_lvl = NIX_TXSCH_LVL_SMQ; hw_lvl < NIX_TXSCH_LVL_CNT; hw_lvl++) {
+			next_node = TAILQ_FIRST(list);
+			while (next_node) {
+				node = next_node;
+				next_node = TAILQ_NEXT(node, node);
+				if (node->hw_lvl != hw_lvl)
+					continue;
 
-			if (!nix_tm_is_leaf(nix, node->lvl) &&
-			    node->flags & NIX_TM_NODE_HWRES) {
-				/* Clear xoff in path for flush to succeed */
-				rc = nix_tm_clear_path_xoff(nix, node);
-				if (rc)
-					return rc;
-				rc = nix_tm_free_node_resource(nix, node);
-				if (rc)
-					return rc;
+				if (!nix_tm_is_leaf(nix, node->lvl) &&
+				    node->flags & NIX_TM_NODE_HWRES) {
+					/* Clear xoff in path for flush to succeed */
+					rc = nix_tm_clear_path_xoff(nix, node);
+					if (rc)
+						return rc;
+					rc = nix_tm_free_node_resource(nix, node);
+					if (rc)
+						return rc;
+				}
 			}
 		}
 
-- 
2.25.1