[dpdk-dev] [PATCH 32/52] common/cnxk: add nix traffic management base support

[Nithin Dabilpuram <ndabilpuram@marvell.com>]

Add nix traffic management base support to init/fini node, shaper profile
and topology, setup SQ for a given user hierarchy or default internal
hierarchy.

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
---
 drivers/common/cnxk/meson.build        |   3 +
 drivers/common/cnxk/roc_nix.c          |   7 +
 drivers/common/cnxk/roc_nix.h          |  26 +++
 drivers/common/cnxk/roc_nix_priv.h     | 219 ++++++++++++++++++
 drivers/common/cnxk/roc_nix_queue.c    |   9 +
 drivers/common/cnxk/roc_nix_tm.c       | 397 +++++++++++++++++++++++++++++++++
 drivers/common/cnxk/roc_nix_tm_ops.c   |  67 ++++++
 drivers/common/cnxk/roc_nix_tm_utils.c |  62 +++++
 drivers/common/cnxk/roc_platform.c     |   1 +
 drivers/common/cnxk/roc_platform.h     |   2 +
 drivers/common/cnxk/version.map        |   3 +
 11 files changed, 796 insertions(+)
 create mode 100644 drivers/common/cnxk/roc_nix_tm.c
 create mode 100644 drivers/common/cnxk/roc_nix_tm_ops.c
 create mode 100644 drivers/common/cnxk/roc_nix_tm_utils.c

diff --git a/drivers/common/cnxk/meson.build b/drivers/common/cnxk/meson.build
index 5eedb39..a686763 100644
--- a/drivers/common/cnxk/meson.build
+++ b/drivers/common/cnxk/meson.build
@@ -28,6 +28,9 @@ sources = files('roc_dev.c',
 		'roc_nix_queue.c',
 		'roc_nix_rss.c',
 		'roc_nix_stats.c',
+		'roc_nix_tm.c',
+		'roc_nix_tm_ops.c',
+		'roc_nix_tm_utils.c',
 		'roc_nix_vlan.c',
 		'roc_npa.c',
 		'roc_npa_debug.c',
diff --git a/drivers/common/cnxk/roc_nix.c b/drivers/common/cnxk/roc_nix.c
index 7662e59..32ebd77 100644
--- a/drivers/common/cnxk/roc_nix.c
+++ b/drivers/common/cnxk/roc_nix.c
@@ -396,11 +396,17 @@ roc_nix_dev_init(struct roc_nix *roc_nix)
 	if (rc)
 		goto lf_detach;
 
+	rc = nix_tm_conf_init(roc_nix);
+	if (rc)
+		goto unregister_irqs;
+
 	/* Get NIX HW info */
 	roc_nix_get_hw_info(roc_nix);
 	nix->dev.drv_inited = true;
 
 	return 0;
+unregister_irqs:
+	nix_unregister_irqs(nix);
 lf_detach:
 	nix_lf_detach(nix);
 dev_fini:
@@ -421,6 +427,7 @@ roc_nix_dev_fini(struct roc_nix *roc_nix)
 	if (!nix->dev.drv_inited)
 		goto fini;
 
+	nix_tm_conf_fini(roc_nix);
 	nix_unregister_irqs(nix);
 
 	rc = nix_lf_detach(nix);
diff --git a/drivers/common/cnxk/roc_nix.h b/drivers/common/cnxk/roc_nix.h
index 01f8a9f..b89851f 100644
--- a/drivers/common/cnxk/roc_nix.h
+++ b/drivers/common/cnxk/roc_nix.h
@@ -292,6 +292,32 @@ void __roc_api roc_nix_unregister_queue_irqs(struct roc_nix *roc_nix);
 int __roc_api roc_nix_register_cq_irqs(struct roc_nix *roc_nix);
 void __roc_api roc_nix_unregister_cq_irqs(struct roc_nix *roc_nix);
 
+/* Traffic Management */
+#define ROC_NIX_TM_MAX_SCHED_WT	       ((uint8_t)~0)
+
+enum roc_nix_tm_tree {
+	ROC_NIX_TM_DEFAULT = 0,
+	ROC_NIX_TM_RLIMIT,
+	ROC_NIX_TM_USER,
+	ROC_NIX_TM_TREE_MAX,
+};
+
+enum roc_tm_node_level {
+	ROC_TM_LVL_ROOT = 0,
+	ROC_TM_LVL_SCH1,
+	ROC_TM_LVL_SCH2,
+	ROC_TM_LVL_SCH3,
+	ROC_TM_LVL_SCH4,
+	ROC_TM_LVL_QUEUE,
+	ROC_TM_LVL_MAX,
+};
+
+/*
+ * TM runtime hierarchy init API.
+ */
+int __roc_api roc_nix_tm_sq_aura_fc(struct roc_nix_sq *sq, bool enable);
+int __roc_api roc_nix_tm_sq_flush_spin(struct roc_nix_sq *sq);
+
 /* MAC */
 int __roc_api roc_nix_mac_rxtx_start_stop(struct roc_nix *roc_nix, bool start);
 int __roc_api roc_nix_mac_link_event_start_stop(struct roc_nix *roc_nix,
diff --git a/drivers/common/cnxk/roc_nix_priv.h b/drivers/common/cnxk/roc_nix_priv.h
index 6e50a1b..bd4a4e9 100644
--- a/drivers/common/cnxk/roc_nix_priv.h
+++ b/drivers/common/cnxk/roc_nix_priv.h
@@ -28,6 +28,77 @@ struct nix_qint {
 	uint8_t qintx;
 };
 
+/* Traffic Manager */
+#define NIX_TM_MAX_HW_TXSCHQ 512
+#define NIX_TM_HW_ID_INVALID UINT32_MAX
+
+/* TM flags */
+#define NIX_TM_HIERARCHY_ENA BIT_ULL(0)
+#define NIX_TM_TL1_NO_SP     BIT_ULL(1)
+#define NIX_TM_TL1_ACCESS    BIT_ULL(2)
+
+struct nix_tm_tb {
+	/** Token bucket rate (bytes per second) */
+	uint64_t rate;
+
+	/** Token bucket size (bytes), a.k.a. max burst size */
+	uint64_t size;
+};
+
+struct nix_tm_node {
+	TAILQ_ENTRY(nix_tm_node) node;
+
+	/* Input params */
+	enum roc_nix_tm_tree tree;
+	uint32_t id;
+	uint32_t priority;
+	uint32_t weight;
+	uint16_t lvl;
+	uint32_t parent_id;
+	uint32_t shaper_profile_id;
+	void (*free_fn)(void *node);
+
+	/* Derived params */
+	uint32_t hw_id;
+	uint16_t hw_lvl;
+	uint32_t rr_prio;
+	uint32_t rr_num;
+	uint32_t max_prio;
+	uint32_t parent_hw_id;
+	uint32_t flags : 16;
+#define NIX_TM_NODE_HWRES   BIT_ULL(0)
+#define NIX_TM_NODE_ENABLED BIT_ULL(1)
+	/* Shaper algorithm for RED state @NIX_REDALG_E */
+	uint32_t red_algo : 2;
+	uint32_t pkt_mode : 1;
+	uint32_t pkt_mode_set : 1;
+
+	bool child_realloc;
+	struct nix_tm_node *parent;
+
+	/* Non-leaf node sp count */
+	uint32_t n_sp_priorities;
+
+	/* Last stats */
+	uint64_t last_pkts;
+	uint64_t last_bytes;
+};
+
+struct nix_tm_shaper_profile {
+	TAILQ_ENTRY(nix_tm_shaper_profile) shaper;
+	struct nix_tm_tb commit;
+	struct nix_tm_tb peak;
+	int32_t pkt_len_adj;
+	bool pkt_mode;
+	uint32_t id;
+	void (*free_fn)(void *profile);
+
+	uint32_t ref_cnt;
+};
+
+TAILQ_HEAD(nix_tm_node_list, nix_tm_node);
+TAILQ_HEAD(nix_tm_shaper_profile_list, nix_tm_shaper_profile);
+
 struct nix {
 	uint16_t reta[ROC_NIX_RSS_GRPS][ROC_NIX_RSS_RETA_MAX];
 	enum roc_nix_rss_reta_sz reta_sz;
@@ -72,6 +143,23 @@ struct nix {
 	bool ptp_en;
 	bool is_nix1;
 
+	/* Traffic manager info */
+
+	/* Contiguous resources per lvl */
+	struct plt_bitmap *schq_contig_bmp[NIX_TXSCH_LVL_CNT];
+	/* Dis-contiguous resources per lvl */
+	struct plt_bitmap *schq_bmp[NIX_TXSCH_LVL_CNT];
+	void *schq_bmp_mem;
+
+	struct nix_tm_shaper_profile_list shaper_profile_list;
+	struct nix_tm_node_list trees[ROC_NIX_TM_TREE_MAX];
+	enum roc_nix_tm_tree tm_tree;
+	uint64_t tm_rate_min;
+	uint16_t tm_root_lvl;
+	uint16_t tm_flags;
+	uint16_t tm_link_cfg_lvl;
+	uint16_t contig_rsvd[NIX_TXSCH_LVL_CNT];
+	uint16_t discontig_rsvd[NIX_TXSCH_LVL_CNT];
 } __plt_cache_aligned;
 
 enum nix_err_status {
@@ -83,6 +171,29 @@ enum nix_err_status {
 	NIX_ERR_QUEUE_INVALID_RANGE,
 	NIX_ERR_AQ_READ_FAILED,
 	NIX_ERR_AQ_WRITE_FAILED,
+	NIX_ERR_TM_LEAF_NODE_GET,
+	NIX_ERR_TM_INVALID_LVL,
+	NIX_ERR_TM_INVALID_PRIO,
+	NIX_ERR_TM_INVALID_PARENT,
+	NIX_ERR_TM_NODE_EXISTS,
+	NIX_ERR_TM_INVALID_NODE,
+	NIX_ERR_TM_INVALID_SHAPER_PROFILE,
+	NIX_ERR_TM_PKT_MODE_MISMATCH,
+	NIX_ERR_TM_WEIGHT_EXCEED,
+	NIX_ERR_TM_CHILD_EXISTS,
+	NIX_ERR_TM_INVALID_PEAK_SZ,
+	NIX_ERR_TM_INVALID_PEAK_RATE,
+	NIX_ERR_TM_INVALID_COMMIT_SZ,
+	NIX_ERR_TM_INVALID_COMMIT_RATE,
+	NIX_ERR_TM_SHAPER_PROFILE_IN_USE,
+	NIX_ERR_TM_SHAPER_PROFILE_EXISTS,
+	NIX_ERR_TM_SHAPER_PKT_LEN_ADJUST,
+	NIX_ERR_TM_INVALID_TREE,
+	NIX_ERR_TM_PARENT_PRIO_UPDATE,
+	NIX_ERR_TM_PRIO_EXCEEDED,
+	NIX_ERR_TM_PRIO_ORDER,
+	NIX_ERR_TM_MULTIPLE_RR_GROUPS,
+	NIX_ERR_TM_SQ_UPDATE_FAIL,
 	NIX_ERR_NDC_SYNC,
 };
 
@@ -116,4 +227,112 @@ nix_priv_to_roc_nix(struct nix *nix)
 int nix_register_irqs(struct nix *nix);
 void nix_unregister_irqs(struct nix *nix);
 
+/* TM */
+#define NIX_TM_TREE_MASK_ALL                                                   \
+	(BIT(ROC_NIX_TM_DEFAULT) | BIT(ROC_NIX_TM_RLIMIT) |                    \
+	 BIT(ROC_NIX_TM_USER))
+
+/* NIX_MAX_HW_FRS ==
+ * NIX_TM_DFLT_RR_WT * NIX_TM_RR_QUANTUM_MAX / ROC_NIX_TM_MAX_SCHED_WT
+ */
+#define NIX_TM_DFLT_RR_WT 71
+
+/* Default TL1 priority and Quantum from AF */
+#define NIX_TM_TL1_DFLT_RR_QTM	((1 << 24) - 1)
+#define NIX_TM_TL1_DFLT_RR_PRIO 1
+
+struct nix_tm_shaper_data {
+	uint64_t burst_exponent;
+	uint64_t burst_mantissa;
+	uint64_t div_exp;
+	uint64_t exponent;
+	uint64_t mantissa;
+	uint64_t burst;
+	uint64_t rate;
+};
+
+static inline uint64_t
+nix_tm_weight_to_rr_quantum(uint64_t weight)
+{
+	uint64_t max = (roc_model_is_cn9k() ? NIX_CN9K_TM_RR_QUANTUM_MAX :
+						    NIX_TM_RR_QUANTUM_MAX);
+
+	weight &= (uint64_t)ROC_NIX_TM_MAX_SCHED_WT;
+	return (weight * max) / ROC_NIX_TM_MAX_SCHED_WT;
+}
+
+static inline bool
+nix_tm_have_tl1_access(struct nix *nix)
+{
+	return !!(nix->tm_flags & NIX_TM_TL1_ACCESS);
+}
+
+static inline bool
+nix_tm_is_leaf(struct nix *nix, int lvl)
+{
+	if (nix_tm_have_tl1_access(nix))
+		return (lvl == ROC_TM_LVL_QUEUE);
+	return (lvl == ROC_TM_LVL_SCH4);
+}
+
+static inline struct nix_tm_node_list *
+nix_tm_node_list(struct nix *nix, enum roc_nix_tm_tree tree)
+{
+	return &nix->trees[tree];
+}
+
+static inline const char *
+nix_tm_hwlvl2str(uint32_t hw_lvl)
+{
+	switch (hw_lvl) {
+	case NIX_TXSCH_LVL_MDQ:
+		return "SMQ/MDQ";
+	case NIX_TXSCH_LVL_TL4:
+		return "TL4";
+	case NIX_TXSCH_LVL_TL3:
+		return "TL3";
+	case NIX_TXSCH_LVL_TL2:
+		return "TL2";
+	case NIX_TXSCH_LVL_TL1:
+		return "TL1";
+	default:
+		break;
+	}
+
+	return "???";
+}
+
+static inline const char *
+nix_tm_tree2str(enum roc_nix_tm_tree tree)
+{
+	if (tree == ROC_NIX_TM_DEFAULT)
+		return "Default Tree";
+	else if (tree == ROC_NIX_TM_RLIMIT)
+		return "Rate Limit Tree";
+	else if (tree == ROC_NIX_TM_USER)
+		return "User Tree";
+	return "???";
+}
+
+/*
+ * TM priv ops.
+ */
+
+int nix_tm_conf_init(struct roc_nix *roc_nix);
+void nix_tm_conf_fini(struct roc_nix *roc_nix);
+int nix_tm_leaf_data_get(struct nix *nix, uint16_t sq, uint32_t *rr_quantum,
+			 uint16_t *smq);
+int nix_tm_sq_flush_pre(struct roc_nix_sq *sq);
+int nix_tm_sq_flush_post(struct roc_nix_sq *sq);
+int nix_tm_smq_xoff(struct nix *nix, struct nix_tm_node *node, bool enable);
+int nix_tm_clear_path_xoff(struct nix *nix, struct nix_tm_node *node);
+
+/*
+ * TM priv utils.
+ */
+struct nix_tm_node *nix_tm_node_search(struct nix *nix, uint32_t node_id,
+				       enum roc_nix_tm_tree tree);
+uint8_t nix_tm_sw_xoff_prep(struct nix_tm_node *node, bool enable,
+			    volatile uint64_t *reg, volatile uint64_t *regval);
+
 #endif /* _ROC_NIX_PRIV_H_ */
diff --git a/drivers/common/cnxk/roc_nix_queue.c b/drivers/common/cnxk/roc_nix_queue.c
index bb410d5..30c9034 100644
--- a/drivers/common/cnxk/roc_nix_queue.c
+++ b/drivers/common/cnxk/roc_nix_queue.c
@@ -788,6 +788,12 @@ roc_nix_sq_init(struct roc_nix *roc_nix, struct roc_nix_sq *sq)
 	if (rc)
 		goto nomem;
 
+	rc = nix_tm_leaf_data_get(nix, sq->qid, &rr_quantum, &smq);
+	if (rc) {
+		rc = NIX_ERR_TM_LEAF_NODE_GET;
+		goto nomem;
+	}
+
 	/* Init SQ context */
 	if (roc_model_is_cn9k())
 		sq_cn9k_init(nix, sq, rr_quantum, smq);
@@ -831,6 +837,8 @@ roc_nix_sq_fini(struct roc_nix_sq *sq)
 
 	qid = sq->qid;
 
+	rc = nix_tm_sq_flush_pre(sq);
+
 	/* Release SQ context */
 	if (roc_model_is_cn9k())
 		rc |= sq_cn9k_fini(roc_nix_to_nix_priv(sq->roc_nix), sq);
@@ -845,6 +853,7 @@ roc_nix_sq_fini(struct roc_nix_sq *sq)
 	if (mbox_process(mbox))
 		rc |= NIX_ERR_NDC_SYNC;
 
+	rc |= nix_tm_sq_flush_post(sq);
 	rc |= roc_npa_pool_destroy(sq->aura_handle);
 	plt_free(sq->fc);
 	plt_free(sq->sqe_mem);
diff --git a/drivers/common/cnxk/roc_nix_tm.c b/drivers/common/cnxk/roc_nix_tm.c
new file mode 100644
index 0000000..8b26bc7
--- /dev/null
+++ b/drivers/common/cnxk/roc_nix_tm.c
@@ -0,0 +1,397 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2020 Marvell.
+ */
+
+#include "roc_api.h"
+#include "roc_priv.h"
+
+
+int
+nix_tm_clear_path_xoff(struct nix *nix, struct nix_tm_node *node)
+{
+	struct mbox *mbox = (&nix->dev)->mbox;
+	struct nix_txschq_config *req;
+	struct nix_tm_node *p;
+	int rc;
+
+	/* Enable nodes in path for flush to succeed */
+	if (!nix_tm_is_leaf(nix, node->lvl))
+		p = node;
+	else
+		p = node->parent;
+	while (p) {
+		if (!(p->flags & NIX_TM_NODE_ENABLED) &&
+		    (p->flags & NIX_TM_NODE_HWRES)) {
+			req = mbox_alloc_msg_nix_txschq_cfg(mbox);
+			req->lvl = p->hw_lvl;
+			req->num_regs = nix_tm_sw_xoff_prep(p, false, req->reg,
+							    req->regval);
+			rc = mbox_process(mbox);
+			if (rc)
+				return rc;
+
+			p->flags |= NIX_TM_NODE_ENABLED;
+		}
+		p = p->parent;
+	}
+
+	return 0;
+}
+
+int
+nix_tm_smq_xoff(struct nix *nix, struct nix_tm_node *node, bool enable)
+{
+	struct mbox *mbox = (&nix->dev)->mbox;
+	struct nix_txschq_config *req;
+	uint16_t smq;
+	int rc;
+
+	smq = node->hw_id;
+	plt_tm_dbg("Setting SMQ %u XOFF/FLUSH to %s", smq,
+		   enable ? "enable" : "disable");
+
+	rc = nix_tm_clear_path_xoff(nix, node);
+	if (rc)
+		return rc;
+
+	req = mbox_alloc_msg_nix_txschq_cfg(mbox);
+	req->lvl = NIX_TXSCH_LVL_SMQ;
+	req->num_regs = 1;
+
+	req->reg[0] = NIX_AF_SMQX_CFG(smq);
+	req->regval[0] = enable ? (BIT_ULL(50) | BIT_ULL(49)) : 0;
+	req->regval_mask[0] =
+		enable ? ~(BIT_ULL(50) | BIT_ULL(49)) : ~BIT_ULL(50);
+
+	return mbox_process(mbox);
+}
+
+int
+nix_tm_leaf_data_get(struct nix *nix, uint16_t sq, uint32_t *rr_quantum,
+		     uint16_t *smq)
+{
+	struct nix_tm_node *node;
+	int rc;
+
+	node = nix_tm_node_search(nix, sq, nix->tm_tree);
+
+	/* Check if we found a valid leaf node */
+	if (!node || !nix_tm_is_leaf(nix, node->lvl) || !node->parent ||
+	    node->parent->hw_id == NIX_TM_HW_ID_INVALID) {
+		return -EIO;
+	}
+
+	/* Get SMQ Id of leaf node's parent */
+	*smq = node->parent->hw_id;
+	*rr_quantum = nix_tm_weight_to_rr_quantum(node->weight);
+
+	rc = nix_tm_smq_xoff(nix, node->parent, false);
+	if (rc)
+		return rc;
+	node->flags |= NIX_TM_NODE_ENABLED;
+	return 0;
+}
+
+int
+roc_nix_tm_sq_flush_spin(struct roc_nix_sq *sq)
+{
+	struct nix *nix = roc_nix_to_nix_priv(sq->roc_nix);
+	uint16_t sqb_cnt, head_off, tail_off;
+	uint64_t wdata, val, prev;
+	uint16_t qid = sq->qid;
+	int64_t *regaddr;
+	uint64_t timeout; /* 10's of usec */
+
+	/* Wait for enough time based on shaper min rate */
+	timeout = (sq->nb_desc * roc_nix_max_pkt_len(sq->roc_nix) * 8 * 1E5);
+	/* Wait for worst case scenario of this SQ being last priority
+	 * and so have to wait for all other SQ's drain out by their own.
+	 */
+	timeout = timeout * nix->nb_tx_queues;
+	timeout = timeout / nix->tm_rate_min;
+	if (!timeout)
+		timeout = 10000;
+
+	wdata = ((uint64_t)qid << 32);
+	regaddr = (int64_t *)(nix->base + NIX_LF_SQ_OP_STATUS);
+	val = roc_atomic64_add_nosync(wdata, regaddr);
+
+	/* Spin multiple iterations as "sq->fc_cache_pkts" can still
+	 * have space to send pkts even though fc_mem is disabled
+	 */
+
+	while (true) {
+		prev = val;
+		plt_delay_us(10);
+		val = roc_atomic64_add_nosync(wdata, regaddr);
+		/* Continue on error */
+		if (val & BIT_ULL(63))
+			continue;
+
+		if (prev != val)
+			continue;
+
+		sqb_cnt = val & 0xFFFF;
+		head_off = (val >> 20) & 0x3F;
+		tail_off = (val >> 28) & 0x3F;
+
+		/* SQ reached quiescent state */
+		if (sqb_cnt <= 1 && head_off == tail_off &&
+		    (*(volatile uint64_t *)sq->fc == sq->nb_sqb_bufs)) {
+			break;
+		}
+
+		/* Timeout */
+		if (!timeout)
+			goto exit;
+		timeout--;
+	}
+
+	return 0;
+exit:
+	roc_nix_queues_ctx_dump(sq->roc_nix);
+	return -EFAULT;
+}
+
+/* Flush and disable tx queue and its parent SMQ */
+int
+nix_tm_sq_flush_pre(struct roc_nix_sq *sq)
+{
+	struct roc_nix *roc_nix = sq->roc_nix;
+	struct nix_tm_node *node, *sibling;
+	struct nix_tm_node_list *list;
+	enum roc_nix_tm_tree tree;
+	struct mbox *mbox;
+	struct nix *nix;
+	uint16_t qid;
+	int rc;
+
+	nix = roc_nix_to_nix_priv(roc_nix);
+
+	/* Need not do anything if tree is in disabled state */
+	if (!(nix->tm_flags & NIX_TM_HIERARCHY_ENA))
+		return 0;
+
+	mbox = (&nix->dev)->mbox;
+	qid = sq->qid;
+
+	tree = nix->tm_tree;
+	list = nix_tm_node_list(nix, tree);
+
+	/* Find the node for this SQ */
+	node = nix_tm_node_search(nix, qid, tree);
+	if (!node || !(node->flags & NIX_TM_NODE_ENABLED)) {
+		plt_err("Invalid node/state for sq %u", qid);
+		return -EFAULT;
+	}
+
+	/* Enable CGX RXTX to drain pkts */
+	if (!roc_nix->io_enabled) {
+		/* Though it enables both RX MCAM Entries and CGX Link
+		 * we assume all the rx queues are stopped way back.
+		 */
+		mbox_alloc_msg_nix_lf_start_rx(mbox);
+		rc = mbox_process(mbox);
+		if (rc) {
+			plt_err("cgx start failed, rc=%d", rc);
+			return rc;
+		}
+	}
+
+	/* Disable smq xoff for case it was enabled earlier */
+	rc = nix_tm_smq_xoff(nix, node->parent, false);
+	if (rc) {
+		plt_err("Failed to enable smq %u, rc=%d", node->parent->hw_id,
+			rc);
+		return rc;
+	}
+
+	/* As per HRM, to disable an SQ, all other SQ's
+	 * that feed to same SMQ must be paused before SMQ flush.
+	 */
+	TAILQ_FOREACH(sibling, list, node) {
+		if (sibling->parent != node->parent)
+			continue;
+		if (!(sibling->flags & NIX_TM_NODE_ENABLED))
+			continue;
+
+		qid = sibling->id;
+		sq = nix->sqs[qid];
+		if (!sq)
+			continue;
+
+		rc = roc_nix_tm_sq_aura_fc(sq, false);
+		if (rc) {
+			plt_err("Failed to disable sqb aura fc, rc=%d", rc);
+			goto cleanup;
+		}
+
+		/* Wait for sq entries to be flushed */
+		rc = roc_nix_tm_sq_flush_spin(sq);
+		if (rc) {
+			plt_err("Failed to drain sq %u, rc=%d\n", sq->qid, rc);
+			return rc;
+		}
+	}
+
+	node->flags &= ~NIX_TM_NODE_ENABLED;
+
+	/* Disable and flush */
+	rc = nix_tm_smq_xoff(nix, node->parent, true);
+	if (rc) {
+		plt_err("Failed to disable smq %u, rc=%d", node->parent->hw_id,
+			rc);
+		goto cleanup;
+	}
+cleanup:
+	/* Restore cgx state */
+	if (!roc_nix->io_enabled) {
+		mbox_alloc_msg_nix_lf_stop_rx(mbox);
+		rc |= mbox_process(mbox);
+	}
+
+	return rc;
+}
+
+int
+nix_tm_sq_flush_post(struct roc_nix_sq *sq)
+{
+	struct roc_nix *roc_nix = sq->roc_nix;
+	struct nix_tm_node *node, *sibling;
+	struct nix_tm_node_list *list;
+	enum roc_nix_tm_tree tree;
+	struct roc_nix_sq *s_sq;
+	bool once = false;
+	uint16_t qid, s_qid;
+	struct nix *nix;
+	int rc;
+
+	nix = roc_nix_to_nix_priv(roc_nix);
+
+	/* Need not do anything if tree is in disabled state */
+	if (!(nix->tm_flags & NIX_TM_HIERARCHY_ENA))
+		return 0;
+
+	qid = sq->qid;
+	tree = nix->tm_tree;
+	list = nix_tm_node_list(nix, tree);
+
+	/* Find the node for this SQ */
+	node = nix_tm_node_search(nix, qid, tree);
+	if (!node) {
+		plt_err("Invalid node for sq %u", qid);
+		return -EFAULT;
+	}
+
+	/* Enable all the siblings back */
+	TAILQ_FOREACH(sibling, list, node) {
+		if (sibling->parent != node->parent)
+			continue;
+
+		if (sibling->id == qid)
+			continue;
+
+		if (!(sibling->flags & NIX_TM_NODE_ENABLED))
+			continue;
+
+		s_qid = sibling->id;
+		s_sq = nix->sqs[s_qid];
+		if (!s_sq)
+			continue;
+
+		if (!once) {
+			/* Enable back if any SQ is still present */
+			rc = nix_tm_smq_xoff(nix, node->parent, false);
+			if (rc) {
+				plt_err("Failed to enable smq %u, rc=%d",
+					node->parent->hw_id, rc);
+				return rc;
+			}
+			once = true;
+		}
+
+		rc = roc_nix_tm_sq_aura_fc(s_sq, true);
+		if (rc) {
+			plt_err("Failed to enable sqb aura fc, rc=%d", rc);
+			return rc;
+		}
+	}
+
+	return 0;
+}
+
+int
+nix_tm_conf_init(struct roc_nix *roc_nix)
+{
+	struct nix *nix = roc_nix_to_nix_priv(roc_nix);
+	uint32_t bmp_sz, hw_lvl;
+	void *bmp_mem;
+	int rc, i;
+
+	nix->tm_flags = 0;
+	for (i = 0; i < ROC_NIX_TM_TREE_MAX; i++)
+		TAILQ_INIT(&nix->trees[i]);
+
+	TAILQ_INIT(&nix->shaper_profile_list);
+	nix->tm_rate_min = 1E9; /* 1Gbps */
+
+	rc = -ENOMEM;
+	bmp_sz = plt_bitmap_get_memory_footprint(NIX_TM_MAX_HW_TXSCHQ);
+	bmp_mem = plt_zmalloc(bmp_sz * NIX_TXSCH_LVL_CNT * 2, 0);
+	if (!bmp_mem)
+		return rc;
+	nix->schq_bmp_mem = bmp_mem;
+
+	/* Init contiguous and discontiguous bitmap per lvl */
+	rc = -EIO;
+	for (hw_lvl = 0; hw_lvl < NIX_TXSCH_LVL_CNT; hw_lvl++) {
+		/* Bitmap for discontiguous resource */
+		nix->schq_bmp[hw_lvl] =
+			plt_bitmap_init(NIX_TM_MAX_HW_TXSCHQ, bmp_mem, bmp_sz);
+		if (!nix->schq_bmp[hw_lvl])
+			goto exit;
+
+		bmp_mem = PLT_PTR_ADD(bmp_mem, bmp_sz);
+
+		/* Bitmap for contiguous resource */
+		nix->schq_contig_bmp[hw_lvl] =
+			plt_bitmap_init(NIX_TM_MAX_HW_TXSCHQ, bmp_mem, bmp_sz);
+		if (!nix->schq_contig_bmp[hw_lvl])
+			goto exit;
+
+		bmp_mem = PLT_PTR_ADD(bmp_mem, bmp_sz);
+	}
+
+	/* Disable TL1 Static Priority when VF's are enabled
+	 * as otherwise VF's TL2 reallocation will be needed
+	 * runtime to support a specific topology of PF.
+	 */
+	if (nix->pci_dev->max_vfs)
+		nix->tm_flags |= NIX_TM_TL1_NO_SP;
+
+	/* TL1 access is only for PF's */
+	if (roc_nix_is_pf(roc_nix)) {
+		nix->tm_flags |= NIX_TM_TL1_ACCESS;
+		nix->tm_root_lvl = NIX_TXSCH_LVL_TL1;
+	} else {
+		nix->tm_root_lvl = NIX_TXSCH_LVL_TL2;
+	}
+
+	return 0;
+exit:
+	nix_tm_conf_fini(roc_nix);
+	return rc;
+}
+
+void
+nix_tm_conf_fini(struct roc_nix *roc_nix)
+{
+	struct nix *nix = roc_nix_to_nix_priv(roc_nix);
+	uint16_t hw_lvl;
+
+	for (hw_lvl = 0; hw_lvl < NIX_TXSCH_LVL_CNT; hw_lvl++) {
+		plt_bitmap_free(nix->schq_bmp[hw_lvl]);
+		plt_bitmap_free(nix->schq_contig_bmp[hw_lvl]);
+	}
+	plt_free(nix->schq_bmp_mem);
+}
diff --git a/drivers/common/cnxk/roc_nix_tm_ops.c b/drivers/common/cnxk/roc_nix_tm_ops.c
new file mode 100644
index 0000000..a3f6de0
--- /dev/null
+++ b/drivers/common/cnxk/roc_nix_tm_ops.c
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2020 Marvell.
+ */
+
+#include "roc_api.h"
+#include "roc_priv.h"
+
+int
+roc_nix_tm_sq_aura_fc(struct roc_nix_sq *sq, bool enable)
+{
+	struct npa_aq_enq_req *req;
+	struct npa_aq_enq_rsp *rsp;
+	uint64_t aura_handle;
+	struct npa_lf *lf;
+	struct mbox *mbox;
+	int rc = -ENOSPC;
+
+	plt_tm_dbg("Setting SQ %u SQB aura FC to %s", sq->qid,
+		   enable ? "enable" : "disable");
+
+	lf = idev_npa_obj_get();
+	if (!lf)
+		return NPA_ERR_DEVICE_NOT_BOUNDED;
+
+	mbox = lf->mbox;
+	/* Set/clear sqb aura fc_ena */
+	aura_handle = sq->aura_handle;
+	req = mbox_alloc_msg_npa_aq_enq(mbox);
+	if (req == NULL)
+		return rc;
+
+	req->aura_id = roc_npa_aura_handle_to_aura(aura_handle);
+	req->ctype = NPA_AQ_CTYPE_AURA;
+	req->op = NPA_AQ_INSTOP_WRITE;
+	/* Below is not needed for aura writes but AF driver needs it */
+	/* AF will translate to associated poolctx */
+	req->aura.pool_addr = req->aura_id;
+
+	req->aura.fc_ena = enable;
+	req->aura_mask.fc_ena = 1;
+
+	rc = mbox_process(mbox);
+	if (rc)
+		return rc;
+
+	/* Read back npa aura ctx */
+	req = mbox_alloc_msg_npa_aq_enq(mbox);
+	if (req == NULL)
+		return -ENOSPC;
+
+	req->aura_id = roc_npa_aura_handle_to_aura(aura_handle);
+	req->ctype = NPA_AQ_CTYPE_AURA;
+	req->op = NPA_AQ_INSTOP_READ;
+
+	rc = mbox_process_msg(mbox, (void *)&rsp);
+	if (rc)
+		return rc;
+
+	/* Init when enabled as there might be no triggers */
+	if (enable)
+		*(volatile uint64_t *)sq->fc = rsp->aura.count;
+	else
+		*(volatile uint64_t *)sq->fc = sq->nb_sqb_bufs;
+	/* Sync write barrier */
+	plt_wmb();
+	return 0;
+}
diff --git a/drivers/common/cnxk/roc_nix_tm_utils.c b/drivers/common/cnxk/roc_nix_tm_utils.c
new file mode 100644
index 0000000..86f66cf
--- /dev/null
+++ b/drivers/common/cnxk/roc_nix_tm_utils.c
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2020 Marvell.
+ */
+
+#include "roc_api.h"
+#include "roc_priv.h"
+
+struct nix_tm_node *
+nix_tm_node_search(struct nix *nix, uint32_t node_id, enum roc_nix_tm_tree tree)
+{
+	struct nix_tm_node_list *list;
+	struct nix_tm_node *node;
+
+	list = nix_tm_node_list(nix, tree);
+	TAILQ_FOREACH(node, list, node) {
+		if (node->id == node_id)
+			return node;
+	}
+	return NULL;
+}
+
+uint8_t
+nix_tm_sw_xoff_prep(struct nix_tm_node *node, bool enable,
+		    volatile uint64_t *reg, volatile uint64_t *regval)
+{
+	uint32_t hw_lvl = node->hw_lvl;
+	uint32_t schq = node->hw_id;
+	uint8_t k = 0;
+
+	plt_tm_dbg("sw xoff config node %s(%u) lvl %u id %u, enable %u (%p)",
+		   nix_tm_hwlvl2str(hw_lvl), schq, node->lvl, node->id, enable,
+		   node);
+
+	regval[k] = enable;
+
+	switch (hw_lvl) {
+	case NIX_TXSCH_LVL_MDQ:
+		reg[k] = NIX_AF_MDQX_SW_XOFF(schq);
+		k++;
+		break;
+	case NIX_TXSCH_LVL_TL4:
+		reg[k] = NIX_AF_TL4X_SW_XOFF(schq);
+		k++;
+		break;
+	case NIX_TXSCH_LVL_TL3:
+		reg[k] = NIX_AF_TL3X_SW_XOFF(schq);
+		k++;
+		break;
+	case NIX_TXSCH_LVL_TL2:
+		reg[k] = NIX_AF_TL2X_SW_XOFF(schq);
+		k++;
+		break;
+	case NIX_TXSCH_LVL_TL1:
+		reg[k] = NIX_AF_TL1X_SW_XOFF(schq);
+		k++;
+		break;
+	default:
+		break;
+	}
+
+	return k;
+}
diff --git a/drivers/common/cnxk/roc_platform.c b/drivers/common/cnxk/roc_platform.c
index f65033d..dd33e58 100644
--- a/drivers/common/cnxk/roc_platform.c
+++ b/drivers/common/cnxk/roc_platform.c
@@ -32,3 +32,4 @@ RTE_LOG_REGISTER(cnxk_logtype_base, pmd.cnxk.base, NOTICE);
 RTE_LOG_REGISTER(cnxk_logtype_mbox, pmd.cnxk.mbox, NOTICE);
 RTE_LOG_REGISTER(cnxk_logtype_npa, pmd.mempool.cnxk, NOTICE);
 RTE_LOG_REGISTER(cnxk_logtype_nix, pmd.net.cnxk, NOTICE);
+RTE_LOG_REGISTER(cnxk_logtype_tm, pmd.net.cnxk.tm, NOTICE);
diff --git a/drivers/common/cnxk/roc_platform.h b/drivers/common/cnxk/roc_platform.h
index 466c71a..8f46fb3 100644
--- a/drivers/common/cnxk/roc_platform.h
+++ b/drivers/common/cnxk/roc_platform.h
@@ -128,6 +128,7 @@ extern int cnxk_logtype_base;
 extern int cnxk_logtype_mbox;
 extern int cnxk_logtype_npa;
 extern int cnxk_logtype_nix;
+extern int cnxk_logtype_tm;
 
 #define plt_err(fmt, args...)                                                  \
 	RTE_LOG(ERR, PMD, "%s():%u " fmt "\n", __func__, __LINE__, ##args)
@@ -147,6 +148,7 @@ extern int cnxk_logtype_nix;
 #define plt_mbox_dbg(fmt, ...)	plt_dbg(mbox, fmt, ##__VA_ARGS__)
 #define plt_npa_dbg(fmt, ...)	plt_dbg(npa, fmt, ##__VA_ARGS__)
 #define plt_nix_dbg(fmt, ...)	plt_dbg(nix, fmt, ##__VA_ARGS__)
+#define plt_tm_dbg(fmt, ...)	plt_dbg(tm, fmt, ##__VA_ARGS__)
 
 #ifdef __cplusplus
 #define CNXK_PCI_ID(subsystem_dev, dev)				\
diff --git a/drivers/common/cnxk/version.map b/drivers/common/cnxk/version.map
index 7ee657c..c146137 100644
--- a/drivers/common/cnxk/version.map
+++ b/drivers/common/cnxk/version.map
@@ -5,6 +5,7 @@ INTERNAL {
 	cnxk_logtype_mbox;
 	cnxk_logtype_nix;
 	cnxk_logtype_npa;
+	cnxk_logtype_tm;
 	plt_init;
 	roc_clk_freq_get;
 	roc_error_msg_get;
@@ -102,6 +103,8 @@ INTERNAL {
 	roc_nix_xstats_names_get;
 	roc_nix_switch_hdr_set;
 	roc_nix_eeprom_info_get;
+	roc_nix_tm_sq_aura_fc;
+	roc_nix_tm_sq_flush_spin;
 	roc_nix_unregister_cq_irqs;
 	roc_nix_unregister_queue_irqs;
 	roc_nix_vlan_insert_ena_dis;
-- 
2.8.4