[dpdk-dev] [PATCH v2 2/8] common/cnxk: flush smq

[skoteshwar at marvell.com]

From: Satha Rao <skoteshwar at marvell.com>

Added new API to flush all SMQs related nix interface

Signed-off-by: Satha Rao <skoteshwar at marvell.com>
---
 drivers/common/cnxk/hw/nix.h         |  6 +++++
 drivers/common/cnxk/roc_nix.h        |  1 +
 drivers/common/cnxk/roc_nix_tm_ops.c | 50 ++++++++++++++++++++++++++++++++++++
 drivers/common/cnxk/version.map      |  1 +
 4 files changed, 58 insertions(+)

diff --git a/drivers/common/cnxk/hw/nix.h b/drivers/common/cnxk/hw/nix.h
index a0ffd25..bc908c2 100644
--- a/drivers/common/cnxk/hw/nix.h
+++ b/drivers/common/cnxk/hw/nix.h
@@ -2189,4 +2189,10 @@ struct nix_lso_format {
 #define NIX_LSO_FORMAT_IDX_TSOV4 0
 #define NIX_LSO_FORMAT_IDX_TSOV6 1
 
+/* [CN10K, .) */
+#define NIX_SENDSTATALG_MASK	  0x7
+#define NIX_SENDSTATALG_SEL_MASK  0x8
+#define NIX_SENDSTAT_IOFFSET_MASK 0xFFF
+#define NIX_SENDSTAT_OOFFSET_MASK 0xFFF
+
 #endif /* __NIX_HW_H__ */
diff --git a/drivers/common/cnxk/roc_nix.h b/drivers/common/cnxk/roc_nix.h
index b0e6fab..ac7bd7e 100644
--- a/drivers/common/cnxk/roc_nix.h
+++ b/drivers/common/cnxk/roc_nix.h
@@ -468,6 +468,7 @@ int __roc_api roc_nix_tm_rsrc_count(struct roc_nix *roc_nix,
 int __roc_api roc_nix_tm_node_name_get(struct roc_nix *roc_nix,
 				       uint32_t node_id, char *buf,
 				       size_t buflen);
+int __roc_api roc_nix_smq_flush(struct roc_nix *roc_nix);
 
 /* MAC */
 int __roc_api roc_nix_mac_rxtx_start_stop(struct roc_nix *roc_nix, bool start);
diff --git a/drivers/common/cnxk/roc_nix_tm_ops.c b/drivers/common/cnxk/roc_nix_tm_ops.c
index ed244d4..d9741f5 100644
--- a/drivers/common/cnxk/roc_nix_tm_ops.c
+++ b/drivers/common/cnxk/roc_nix_tm_ops.c
@@ -311,6 +311,56 @@
 }
 
 int
+roc_nix_smq_flush(struct roc_nix *roc_nix)
+{
+	struct nix *nix = roc_nix_to_nix_priv(roc_nix);
+	struct nix_tm_node_list *list;
+	enum roc_nix_tm_tree tree;
+	struct nix_tm_node *node;
+	int rc = 0;
+
+	if (!(nix->tm_flags & NIX_TM_HIERARCHY_ENA))
+		return 0;
+
+	tree = nix->tm_tree;
+	list = nix_tm_node_list(nix, tree);
+
+	/* XOFF & Flush all SMQ's. HRM mandates
+	 * all SQ's empty before SMQ flush is issued.
+	 */
+	TAILQ_FOREACH(node, list, node) {
+		if (node->hw_lvl != NIX_TXSCH_LVL_SMQ)
+			continue;
+		if (!(node->flags & NIX_TM_NODE_HWRES))
+			continue;
+
+		rc = nix_tm_smq_xoff(nix, node, true);
+		if (rc) {
+			plt_err("Failed to enable smq %u, rc=%d", node->hw_id,
+				rc);
+			goto exit;
+		}
+	}
+
+	/* XON all SMQ's */
+	TAILQ_FOREACH(node, list, node) {
+		if (node->hw_lvl != NIX_TXSCH_LVL_SMQ)
+			continue;
+		if (!(node->flags & NIX_TM_NODE_HWRES))
+			continue;
+
+		rc = nix_tm_smq_xoff(nix, node, false);
+		if (rc) {
+			plt_err("Failed to enable smq %u, rc=%d", node->hw_id,
+				rc);
+			goto exit;
+		}
+	}
+exit:
+	return rc;
+}
+
+int
 roc_nix_tm_hierarchy_disable(struct roc_nix *roc_nix)
 {
 	struct nix *nix = roc_nix_to_nix_priv(roc_nix);
diff --git a/drivers/common/cnxk/version.map b/drivers/common/cnxk/version.map
index 5df2e56..388f938 100644
--- a/drivers/common/cnxk/version.map
+++ b/drivers/common/cnxk/version.map
@@ -170,6 +170,7 @@ INTERNAL {
 	roc_nix_xstats_names_get;
 	roc_nix_switch_hdr_set;
 	roc_nix_eeprom_info_get;
+	roc_nix_smq_flush;
 	roc_nix_tm_dump;
 	roc_nix_tm_fini;
 	roc_nix_tm_free_resources;
-- 
1.8.3.1