[dpdk-dev] [PATCH v4 06/27] event/dlb2: add v2.5 create sched domain

[Timothy McDaniel <timothy.mcdaniel@intel.com>]

Update domain creation logic to account for DLB v2.5
credit scheme, new register map, and new register access
macros.

Signed-off-by: Timothy McDaniel <timothy.mcdaniel@intel.com>
---
 drivers/event/dlb2/dlb2_user.h                |  13 +-
 drivers/event/dlb2/pf/base/dlb2_resource.c    | 645 ----------------
 .../event/dlb2/pf/base/dlb2_resource_new.c    | 696 ++++++++++++++++++
 3 files changed, 707 insertions(+), 647 deletions(-)

diff --git a/drivers/event/dlb2/dlb2_user.h b/drivers/event/dlb2/dlb2_user.h
index b7d125dec..9760e9bda 100644
--- a/drivers/event/dlb2/dlb2_user.h
+++ b/drivers/event/dlb2/dlb2_user.h
@@ -18,6 +18,7 @@ enum dlb2_error {
 	DLB2_ST_LDB_QUEUES_UNAVAILABLE,
 	DLB2_ST_LDB_CREDITS_UNAVAILABLE,
 	DLB2_ST_DIR_CREDITS_UNAVAILABLE,
+	DLB2_ST_CREDITS_UNAVAILABLE,
 	DLB2_ST_SEQUENCE_NUMBERS_UNAVAILABLE,
 	DLB2_ST_INVALID_DOMAIN_ID,
 	DLB2_ST_INVALID_QID_INFLIGHT_ALLOCATION,
@@ -57,6 +58,7 @@ static const char dlb2_error_strings[][128] = {
 	"DLB2_ST_LDB_QUEUES_UNAVAILABLE",
 	"DLB2_ST_LDB_CREDITS_UNAVAILABLE",
 	"DLB2_ST_DIR_CREDITS_UNAVAILABLE",
+	"DLB2_ST_CREDITS_UNAVAILABLE",
 	"DLB2_ST_SEQUENCE_NUMBERS_UNAVAILABLE",
 	"DLB2_ST_INVALID_DOMAIN_ID",
 	"DLB2_ST_INVALID_QID_INFLIGHT_ALLOCATION",
@@ -170,8 +172,15 @@ struct dlb2_create_sched_domain_args {
 	__u32 num_dir_ports;
 	__u32 num_atomic_inflights;
 	__u32 num_hist_list_entries;
-	__u32 num_ldb_credits;
-	__u32 num_dir_credits;
+	union {
+		struct {
+			__u32 num_ldb_credits;
+			__u32 num_dir_credits;
+		};
+		struct {
+			__u32 num_credits;
+		};
+	};
 	__u8 cos_strict;
 	__u8 padding1[3];
 };
diff --git a/drivers/event/dlb2/pf/base/dlb2_resource.c b/drivers/event/dlb2/pf/base/dlb2_resource.c
index eda983d85..99c3d031d 100644
--- a/drivers/event/dlb2/pf/base/dlb2_resource.c
+++ b/drivers/event/dlb2/pf/base/dlb2_resource.c
@@ -32,21 +32,6 @@
 #define DLB2_FUNC_LIST_FOR_SAFE(head, ptr, ptr_tmp, it, it_tmp) \
 	DLB2_LIST_FOR_EACH_SAFE((head), ptr, ptr_tmp, func_list, it, it_tmp)
 
-static void dlb2_init_domain_rsrc_lists(struct dlb2_hw_domain *domain)
-{
-	int i;
-
-	dlb2_list_init_head(&domain->used_ldb_queues);
-	dlb2_list_init_head(&domain->used_dir_pq_pairs);
-	dlb2_list_init_head(&domain->avail_ldb_queues);
-	dlb2_list_init_head(&domain->avail_dir_pq_pairs);
-
-	for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++)
-		dlb2_list_init_head(&domain->used_ldb_ports[i]);
-	for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++)
-		dlb2_list_init_head(&domain->avail_ldb_ports[i]);
-}
-
 void dlb2_hw_enable_sparse_dir_cq_mode(struct dlb2_hw *hw)
 {
 	union dlb2_chp_cfg_chp_csr_ctrl r0;
@@ -69,636 +54,6 @@ void dlb2_hw_enable_sparse_ldb_cq_mode(struct dlb2_hw *hw)
 	DLB2_CSR_WR(hw, DLB2_CHP_CFG_CHP_CSR_CTRL, r0.val);
 }
 
-static void dlb2_configure_domain_credits(struct dlb2_hw *hw,
-					  struct dlb2_hw_domain *domain)
-{
-	union dlb2_chp_cfg_ldb_vas_crd r0 = { {0} };
-	union dlb2_chp_cfg_dir_vas_crd r1 = { {0} };
-
-	r0.field.count = domain->num_ldb_credits;
-
-	DLB2_CSR_WR(hw, DLB2_CHP_CFG_LDB_VAS_CRD(domain->id.phys_id), r0.val);
-
-	r1.field.count = domain->num_dir_credits;
-
-	DLB2_CSR_WR(hw, DLB2_CHP_CFG_DIR_VAS_CRD(domain->id.phys_id), r1.val);
-}
-
-static struct dlb2_ldb_port *
-dlb2_get_next_ldb_port(struct dlb2_hw *hw,
-		       struct dlb2_function_resources *rsrcs,
-		       u32 domain_id,
-		       u32 cos_id)
-{
-	struct dlb2_list_entry *iter;
-	struct dlb2_ldb_port *port;
-	RTE_SET_USED(iter);
-	/*
-	 * To reduce the odds of consecutive load-balanced ports mapping to the
-	 * same queue(s), the driver attempts to allocate ports whose neighbors
-	 * are owned by a different domain.
-	 */
-	DLB2_FUNC_LIST_FOR(rsrcs->avail_ldb_ports[cos_id], port, iter) {
-		u32 next, prev;
-		u32 phys_id;
-
-		phys_id = port->id.phys_id;
-		next = phys_id + 1;
-		prev = phys_id - 1;
-
-		if (phys_id == DLB2_MAX_NUM_LDB_PORTS - 1)
-			next = 0;
-		if (phys_id == 0)
-			prev = DLB2_MAX_NUM_LDB_PORTS - 1;
-
-		if (!hw->rsrcs.ldb_ports[next].owned ||
-		    hw->rsrcs.ldb_ports[next].domain_id.phys_id == domain_id)
-			continue;
-
-		if (!hw->rsrcs.ldb_ports[prev].owned ||
-		    hw->rsrcs.ldb_ports[prev].domain_id.phys_id == domain_id)
-			continue;
-
-		return port;
-	}
-
-	/*
-	 * Failing that, the driver looks for a port with one neighbor owned by
-	 * a different domain and the other unallocated.
-	 */
-	DLB2_FUNC_LIST_FOR(rsrcs->avail_ldb_ports[cos_id], port, iter) {
-		u32 next, prev;
-		u32 phys_id;
-
-		phys_id = port->id.phys_id;
-		next = phys_id + 1;
-		prev = phys_id - 1;
-
-		if (phys_id == DLB2_MAX_NUM_LDB_PORTS - 1)
-			next = 0;
-		if (phys_id == 0)
-			prev = DLB2_MAX_NUM_LDB_PORTS - 1;
-
-		if (!hw->rsrcs.ldb_ports[prev].owned &&
-		    hw->rsrcs.ldb_ports[next].owned &&
-		    hw->rsrcs.ldb_ports[next].domain_id.phys_id != domain_id)
-			return port;
-
-		if (!hw->rsrcs.ldb_ports[next].owned &&
-		    hw->rsrcs.ldb_ports[prev].owned &&
-		    hw->rsrcs.ldb_ports[prev].domain_id.phys_id != domain_id)
-			return port;
-	}
-
-	/*
-	 * Failing that, the driver looks for a port with both neighbors
-	 * unallocated.
-	 */
-	DLB2_FUNC_LIST_FOR(rsrcs->avail_ldb_ports[cos_id], port, iter) {
-		u32 next, prev;
-		u32 phys_id;
-
-		phys_id = port->id.phys_id;
-		next = phys_id + 1;
-		prev = phys_id - 1;
-
-		if (phys_id == DLB2_MAX_NUM_LDB_PORTS - 1)
-			next = 0;
-		if (phys_id == 0)
-			prev = DLB2_MAX_NUM_LDB_PORTS - 1;
-
-		if (!hw->rsrcs.ldb_ports[prev].owned &&
-		    !hw->rsrcs.ldb_ports[next].owned)
-			return port;
-	}
-
-	/* If all else fails, the driver returns the next available port. */
-	return DLB2_FUNC_LIST_HEAD(rsrcs->avail_ldb_ports[cos_id],
-				   typeof(*port));
-}
-
-static int __dlb2_attach_ldb_ports(struct dlb2_hw *hw,
-				   struct dlb2_function_resources *rsrcs,
-				   struct dlb2_hw_domain *domain,
-				   u32 num_ports,
-				   u32 cos_id,
-				   struct dlb2_cmd_response *resp)
-{
-	unsigned int i;
-
-	if (rsrcs->num_avail_ldb_ports[cos_id] < num_ports) {
-		resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	for (i = 0; i < num_ports; i++) {
-		struct dlb2_ldb_port *port;
-
-		port = dlb2_get_next_ldb_port(hw, rsrcs,
-					      domain->id.phys_id, cos_id);
-		if (port == NULL) {
-			DLB2_HW_ERR(hw,
-				    "[%s()] Internal error: domain validation failed\n",
-				    __func__);
-			return -EFAULT;
-		}
-
-		dlb2_list_del(&rsrcs->avail_ldb_ports[cos_id],
-			      &port->func_list);
-
-		port->domain_id = domain->id;
-		port->owned = true;
-
-		dlb2_list_add(&domain->avail_ldb_ports[cos_id],
-			      &port->domain_list);
-	}
-
-	rsrcs->num_avail_ldb_ports[cos_id] -= num_ports;
-
-	return 0;
-}
-
-static int dlb2_attach_ldb_ports(struct dlb2_hw *hw,
-				 struct dlb2_function_resources *rsrcs,
-				 struct dlb2_hw_domain *domain,
-				 struct dlb2_create_sched_domain_args *args,
-				 struct dlb2_cmd_response *resp)
-{
-	unsigned int i, j;
-	int ret;
-
-	if (args->cos_strict) {
-		for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
-			u32 num = args->num_cos_ldb_ports[i];
-
-			/* Allocate ports from specific classes-of-service */
-			ret = __dlb2_attach_ldb_ports(hw,
-						      rsrcs,
-						      domain,
-						      num,
-						      i,
-						      resp);
-			if (ret)
-				return ret;
-		}
-	} else {
-		unsigned int k;
-		u32 cos_id;
-
-		/*
-		 * Attempt to allocate from specific class-of-service, but
-		 * fallback to the other classes if that fails.
-		 */
-		for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
-			for (j = 0; j < args->num_cos_ldb_ports[i]; j++) {
-				for (k = 0; k < DLB2_NUM_COS_DOMAINS; k++) {
-					cos_id = (i + k) % DLB2_NUM_COS_DOMAINS;
-
-					ret = __dlb2_attach_ldb_ports(hw,
-								      rsrcs,
-								      domain,
-								      1,
-								      cos_id,
-								      resp);
-					if (ret == 0)
-						break;
-				}
-
-				if (ret < 0)
-					return ret;
-			}
-		}
-	}
-
-	/* Allocate num_ldb_ports from any class-of-service */
-	for (i = 0; i < args->num_ldb_ports; i++) {
-		for (j = 0; j < DLB2_NUM_COS_DOMAINS; j++) {
-			ret = __dlb2_attach_ldb_ports(hw,
-						      rsrcs,
-						      domain,
-						      1,
-						      j,
-						      resp);
-			if (ret == 0)
-				break;
-		}
-
-		if (ret < 0)
-			return ret;
-	}
-
-	return 0;
-}
-
-static int dlb2_attach_dir_ports(struct dlb2_hw *hw,
-				 struct dlb2_function_resources *rsrcs,
-				 struct dlb2_hw_domain *domain,
-				 u32 num_ports,
-				 struct dlb2_cmd_response *resp)
-{
-	unsigned int i;
-
-	if (rsrcs->num_avail_dir_pq_pairs < num_ports) {
-		resp->status = DLB2_ST_DIR_PORTS_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	for (i = 0; i < num_ports; i++) {
-		struct dlb2_dir_pq_pair *port;
-
-		port = DLB2_FUNC_LIST_HEAD(rsrcs->avail_dir_pq_pairs,
-					   typeof(*port));
-		if (port == NULL) {
-			DLB2_HW_ERR(hw,
-				    "[%s()] Internal error: domain validation failed\n",
-				    __func__);
-			return -EFAULT;
-		}
-
-		dlb2_list_del(&rsrcs->avail_dir_pq_pairs, &port->func_list);
-
-		port->domain_id = domain->id;
-		port->owned = true;
-
-		dlb2_list_add(&domain->avail_dir_pq_pairs, &port->domain_list);
-	}
-
-	rsrcs->num_avail_dir_pq_pairs -= num_ports;
-
-	return 0;
-}
-
-static int dlb2_attach_ldb_credits(struct dlb2_function_resources *rsrcs,
-				   struct dlb2_hw_domain *domain,
-				   u32 num_credits,
-				   struct dlb2_cmd_response *resp)
-{
-	if (rsrcs->num_avail_qed_entries < num_credits) {
-		resp->status = DLB2_ST_LDB_CREDITS_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	rsrcs->num_avail_qed_entries -= num_credits;
-	domain->num_ldb_credits += num_credits;
-	return 0;
-}
-
-static int dlb2_attach_dir_credits(struct dlb2_function_resources *rsrcs,
-				   struct dlb2_hw_domain *domain,
-				   u32 num_credits,
-				   struct dlb2_cmd_response *resp)
-{
-	if (rsrcs->num_avail_dqed_entries < num_credits) {
-		resp->status = DLB2_ST_DIR_CREDITS_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	rsrcs->num_avail_dqed_entries -= num_credits;
-	domain->num_dir_credits += num_credits;
-	return 0;
-}
-
-static int dlb2_attach_atomic_inflights(struct dlb2_function_resources *rsrcs,
-					struct dlb2_hw_domain *domain,
-					u32 num_atomic_inflights,
-					struct dlb2_cmd_response *resp)
-{
-	if (rsrcs->num_avail_aqed_entries < num_atomic_inflights) {
-		resp->status = DLB2_ST_ATOMIC_INFLIGHTS_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	rsrcs->num_avail_aqed_entries -= num_atomic_inflights;
-	domain->num_avail_aqed_entries += num_atomic_inflights;
-	return 0;
-}
-
-static int
-dlb2_attach_domain_hist_list_entries(struct dlb2_function_resources *rsrcs,
-				     struct dlb2_hw_domain *domain,
-				     u32 num_hist_list_entries,
-				     struct dlb2_cmd_response *resp)
-{
-	struct dlb2_bitmap *bitmap;
-	int base;
-
-	if (num_hist_list_entries) {
-		bitmap = rsrcs->avail_hist_list_entries;
-
-		base = dlb2_bitmap_find_set_bit_range(bitmap,
-						      num_hist_list_entries);
-		if (base < 0)
-			goto error;
-
-		domain->total_hist_list_entries = num_hist_list_entries;
-		domain->avail_hist_list_entries = num_hist_list_entries;
-		domain->hist_list_entry_base = base;
-		domain->hist_list_entry_offset = 0;
-
-		dlb2_bitmap_clear_range(bitmap, base, num_hist_list_entries);
-	}
-	return 0;
-
-error:
-	resp->status = DLB2_ST_HIST_LIST_ENTRIES_UNAVAILABLE;
-	return -EINVAL;
-}
-
-static int dlb2_attach_ldb_queues(struct dlb2_hw *hw,
-				  struct dlb2_function_resources *rsrcs,
-				  struct dlb2_hw_domain *domain,
-				  u32 num_queues,
-				  struct dlb2_cmd_response *resp)
-{
-	unsigned int i;
-
-	if (rsrcs->num_avail_ldb_queues < num_queues) {
-		resp->status = DLB2_ST_LDB_QUEUES_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	for (i = 0; i < num_queues; i++) {
-		struct dlb2_ldb_queue *queue;
-
-		queue = DLB2_FUNC_LIST_HEAD(rsrcs->avail_ldb_queues,
-					    typeof(*queue));
-		if (queue == NULL) {
-			DLB2_HW_ERR(hw,
-				    "[%s()] Internal error: domain validation failed\n",
-				    __func__);
-			return -EFAULT;
-		}
-
-		dlb2_list_del(&rsrcs->avail_ldb_queues, &queue->func_list);
-
-		queue->domain_id = domain->id;
-		queue->owned = true;
-
-		dlb2_list_add(&domain->avail_ldb_queues, &queue->domain_list);
-	}
-
-	rsrcs->num_avail_ldb_queues -= num_queues;
-
-	return 0;
-}
-
-static int
-dlb2_domain_attach_resources(struct dlb2_hw *hw,
-			     struct dlb2_function_resources *rsrcs,
-			     struct dlb2_hw_domain *domain,
-			     struct dlb2_create_sched_domain_args *args,
-			     struct dlb2_cmd_response *resp)
-{
-	int ret;
-
-	ret = dlb2_attach_ldb_queues(hw,
-				     rsrcs,
-				     domain,
-				     args->num_ldb_queues,
-				     resp);
-	if (ret < 0)
-		return ret;
-
-	ret = dlb2_attach_ldb_ports(hw,
-				    rsrcs,
-				    domain,
-				    args,
-				    resp);
-	if (ret < 0)
-		return ret;
-
-	ret = dlb2_attach_dir_ports(hw,
-				    rsrcs,
-				    domain,
-				    args->num_dir_ports,
-				    resp);
-	if (ret < 0)
-		return ret;
-
-	ret = dlb2_attach_ldb_credits(rsrcs,
-				      domain,
-				      args->num_ldb_credits,
-				      resp);
-	if (ret < 0)
-		return ret;
-
-	ret = dlb2_attach_dir_credits(rsrcs,
-				      domain,
-				      args->num_dir_credits,
-				      resp);
-	if (ret < 0)
-		return ret;
-
-	ret = dlb2_attach_domain_hist_list_entries(rsrcs,
-						   domain,
-						   args->num_hist_list_entries,
-						   resp);
-	if (ret < 0)
-		return ret;
-
-	ret = dlb2_attach_atomic_inflights(rsrcs,
-					   domain,
-					   args->num_atomic_inflights,
-					   resp);
-	if (ret < 0)
-		return ret;
-
-	dlb2_configure_domain_credits(hw, domain);
-
-	domain->configured = true;
-
-	domain->started = false;
-
-	rsrcs->num_avail_domains--;
-
-	return 0;
-}
-
-static int
-dlb2_verify_create_sched_dom_args(struct dlb2_function_resources *rsrcs,
-				  struct dlb2_create_sched_domain_args *args,
-				  struct dlb2_cmd_response *resp)
-{
-	u32 num_avail_ldb_ports, req_ldb_ports;
-	struct dlb2_bitmap *avail_hl_entries;
-	unsigned int max_contig_hl_range;
-	int i;
-
-	avail_hl_entries = rsrcs->avail_hist_list_entries;
-
-	max_contig_hl_range = dlb2_bitmap_longest_set_range(avail_hl_entries);
-
-	num_avail_ldb_ports = 0;
-	req_ldb_ports = 0;
-	for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
-		num_avail_ldb_ports += rsrcs->num_avail_ldb_ports[i];
-
-		req_ldb_ports += args->num_cos_ldb_ports[i];
-	}
-
-	req_ldb_ports += args->num_ldb_ports;
-
-	if (rsrcs->num_avail_domains < 1) {
-		resp->status = DLB2_ST_DOMAIN_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	if (rsrcs->num_avail_ldb_queues < args->num_ldb_queues) {
-		resp->status = DLB2_ST_LDB_QUEUES_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	if (req_ldb_ports > num_avail_ldb_ports) {
-		resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	for (i = 0; args->cos_strict && i < DLB2_NUM_COS_DOMAINS; i++) {
-		if (args->num_cos_ldb_ports[i] >
-		    rsrcs->num_avail_ldb_ports[i]) {
-			resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE;
-			return -EINVAL;
-		}
-	}
-
-	if (args->num_ldb_queues > 0 && req_ldb_ports == 0) {
-		resp->status = DLB2_ST_LDB_PORT_REQUIRED_FOR_LDB_QUEUES;
-		return -EINVAL;
-	}
-
-	if (rsrcs->num_avail_dir_pq_pairs < args->num_dir_ports) {
-		resp->status = DLB2_ST_DIR_PORTS_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	if (rsrcs->num_avail_qed_entries < args->num_ldb_credits) {
-		resp->status = DLB2_ST_LDB_CREDITS_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	if (rsrcs->num_avail_dqed_entries < args->num_dir_credits) {
-		resp->status = DLB2_ST_DIR_CREDITS_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	if (rsrcs->num_avail_aqed_entries < args->num_atomic_inflights) {
-		resp->status = DLB2_ST_ATOMIC_INFLIGHTS_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	if (max_contig_hl_range < args->num_hist_list_entries) {
-		resp->status = DLB2_ST_HIST_LIST_ENTRIES_UNAVAILABLE;
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static void
-dlb2_log_create_sched_domain_args(struct dlb2_hw *hw,
-				  struct dlb2_create_sched_domain_args *args,
-				  bool vdev_req,
-				  unsigned int vdev_id)
-{
-	DLB2_HW_DBG(hw, "DLB2 create sched domain arguments:\n");
-	if (vdev_req)
-		DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
-	DLB2_HW_DBG(hw, "\tNumber of LDB queues:          %d\n",
-		    args->num_ldb_queues);
-	DLB2_HW_DBG(hw, "\tNumber of LDB ports (any CoS): %d\n",
-		    args->num_ldb_ports);
-	DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 0):   %d\n",
-		    args->num_cos_ldb_ports[0]);
-	DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 1):   %d\n",
-		    args->num_cos_ldb_ports[1]);
-	DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 2):   %d\n",
-		    args->num_cos_ldb_ports[1]);
-	DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 3):   %d\n",
-		    args->num_cos_ldb_ports[1]);
-	DLB2_HW_DBG(hw, "\tStrict CoS allocation:         %d\n",
-		    args->cos_strict);
-	DLB2_HW_DBG(hw, "\tNumber of DIR ports:           %d\n",
-		    args->num_dir_ports);
-	DLB2_HW_DBG(hw, "\tNumber of ATM inflights:       %d\n",
-		    args->num_atomic_inflights);
-	DLB2_HW_DBG(hw, "\tNumber of hist list entries:   %d\n",
-		    args->num_hist_list_entries);
-	DLB2_HW_DBG(hw, "\tNumber of LDB credits:         %d\n",
-		    args->num_ldb_credits);
-	DLB2_HW_DBG(hw, "\tNumber of DIR credits:         %d\n",
-		    args->num_dir_credits);
-}
-
-/**
- * dlb2_hw_create_sched_domain() - Allocate and initialize a DLB scheduling
- *	domain and its resources.
- * @hw:	Contains the current state of the DLB2 hardware.
- * @args: User-provided arguments.
- * @resp: Response to user.
- * @vdev_req: Request came from a virtual device.
- * @vdev_id: If vdev_req is true, this contains the virtual device's ID.
- *
- * Return: returns < 0 on error, 0 otherwise. If the driver is unable to
- * satisfy a request, resp->status will be set accordingly.
- */
-int dlb2_hw_create_sched_domain(struct dlb2_hw *hw,
-				struct dlb2_create_sched_domain_args *args,
-				struct dlb2_cmd_response *resp,
-				bool vdev_req,
-				unsigned int vdev_id)
-{
-	struct dlb2_function_resources *rsrcs;
-	struct dlb2_hw_domain *domain;
-	int ret;
-
-	rsrcs = (vdev_req) ? &hw->vdev[vdev_id] : &hw->pf;
-
-	dlb2_log_create_sched_domain_args(hw, args, vdev_req, vdev_id);
-
-	/*
-	 * Verify that hardware resources are available before attempting to
-	 * satisfy the request. This simplifies the error unwinding code.
-	 */
-	ret = dlb2_verify_create_sched_dom_args(rsrcs, args, resp);
-	if (ret)
-		return ret;
-
-	domain = DLB2_FUNC_LIST_HEAD(rsrcs->avail_domains, typeof(*domain));
-	if (domain == NULL) {
-		DLB2_HW_ERR(hw,
-			    "[%s():%d] Internal error: no available domains\n",
-			    __func__, __LINE__);
-		return -EFAULT;
-	}
-
-	if (domain->configured) {
-		DLB2_HW_ERR(hw,
-			    "[%s()] Internal error: avail_domains contains configured domains.\n",
-			    __func__);
-		return -EFAULT;
-	}
-
-	dlb2_init_domain_rsrc_lists(domain);
-
-	ret = dlb2_domain_attach_resources(hw, rsrcs, domain, args, resp);
-	if (ret < 0) {
-		DLB2_HW_ERR(hw,
-			    "[%s()] Internal error: failed to verify args.\n",
-			    __func__);
-
-		return ret;
-	}
-
-	dlb2_list_del(&rsrcs->avail_domains, &domain->func_list);
-
-	dlb2_list_add(&rsrcs->used_domains, &domain->func_list);
-
-	resp->id = (vdev_req) ? domain->id.virt_id : domain->id.phys_id;
-	resp->status = 0;
-
-	return 0;
-}
-
 /*
  * The PF driver cannot assume that a register write will affect subsequent HCW
  * writes. To ensure a write completes, the driver must read back a CSR. This
diff --git a/drivers/event/dlb2/pf/base/dlb2_resource_new.c b/drivers/event/dlb2/pf/base/dlb2_resource_new.c
index 14b97dbf9..8f97dd865 100644
--- a/drivers/event/dlb2/pf/base/dlb2_resource_new.c
+++ b/drivers/event/dlb2/pf/base/dlb2_resource_new.c
@@ -323,3 +323,699 @@ int dlb2_hw_get_num_resources(struct dlb2_hw *hw,
 	}
 	return 0;
 }
+
+static void dlb2_configure_domain_credits_v2_5(struct dlb2_hw *hw,
+					       struct dlb2_hw_domain *domain)
+{
+	u32 reg = 0;
+
+	DLB2_BITS_SET(reg, domain->num_credits, DLB2_CHP_CFG_LDB_VAS_CRD_COUNT);
+	DLB2_CSR_WR(hw, DLB2_CHP_CFG_VAS_CRD(domain->id.phys_id), reg);
+}
+
+static void dlb2_configure_domain_credits_v2(struct dlb2_hw *hw,
+					     struct dlb2_hw_domain *domain)
+{
+	u32 reg = 0;
+
+	DLB2_BITS_SET(reg, domain->num_ldb_credits,
+		      DLB2_CHP_CFG_LDB_VAS_CRD_COUNT);
+	DLB2_CSR_WR(hw, DLB2_CHP_CFG_LDB_VAS_CRD(domain->id.phys_id), reg);
+
+	reg = 0;
+	DLB2_BITS_SET(reg, domain->num_dir_credits,
+		      DLB2_CHP_CFG_DIR_VAS_CRD_COUNT);
+	DLB2_CSR_WR(hw, DLB2_CHP_CFG_DIR_VAS_CRD(domain->id.phys_id), reg);
+}
+
+static void dlb2_configure_domain_credits(struct dlb2_hw *hw,
+					  struct dlb2_hw_domain *domain)
+{
+	if (hw->ver == DLB2_HW_V2)
+		dlb2_configure_domain_credits_v2(hw, domain);
+	else
+		dlb2_configure_domain_credits_v2_5(hw, domain);
+}
+
+static int dlb2_attach_credits(struct dlb2_function_resources *rsrcs,
+			       struct dlb2_hw_domain *domain,
+			       u32 num_credits,
+			       struct dlb2_cmd_response *resp)
+{
+	if (rsrcs->num_avail_entries < num_credits) {
+		resp->status = DLB2_ST_CREDITS_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	rsrcs->num_avail_entries -= num_credits;
+	domain->num_credits += num_credits;
+	return 0;
+}
+
+static struct dlb2_ldb_port *
+dlb2_get_next_ldb_port(struct dlb2_hw *hw,
+		       struct dlb2_function_resources *rsrcs,
+		       u32 domain_id,
+		       u32 cos_id)
+{
+	struct dlb2_list_entry *iter;
+	struct dlb2_ldb_port *port;
+	RTE_SET_USED(iter);
+
+	/*
+	 * To reduce the odds of consecutive load-balanced ports mapping to the
+	 * same queue(s), the driver attempts to allocate ports whose neighbors
+	 * are owned by a different domain.
+	 */
+	DLB2_FUNC_LIST_FOR(rsrcs->avail_ldb_ports[cos_id], port, iter) {
+		u32 next, prev;
+		u32 phys_id;
+
+		phys_id = port->id.phys_id;
+		next = phys_id + 1;
+		prev = phys_id - 1;
+
+		if (phys_id == DLB2_MAX_NUM_LDB_PORTS - 1)
+			next = 0;
+		if (phys_id == 0)
+			prev = DLB2_MAX_NUM_LDB_PORTS - 1;
+
+		if (!hw->rsrcs.ldb_ports[next].owned ||
+		    hw->rsrcs.ldb_ports[next].domain_id.phys_id == domain_id)
+			continue;
+
+		if (!hw->rsrcs.ldb_ports[prev].owned ||
+		    hw->rsrcs.ldb_ports[prev].domain_id.phys_id == domain_id)
+			continue;
+
+		return port;
+	}
+
+	/*
+	 * Failing that, the driver looks for a port with one neighbor owned by
+	 * a different domain and the other unallocated.
+	 */
+	DLB2_FUNC_LIST_FOR(rsrcs->avail_ldb_ports[cos_id], port, iter) {
+		u32 next, prev;
+		u32 phys_id;
+
+		phys_id = port->id.phys_id;
+		next = phys_id + 1;
+		prev = phys_id - 1;
+
+		if (phys_id == DLB2_MAX_NUM_LDB_PORTS - 1)
+			next = 0;
+		if (phys_id == 0)
+			prev = DLB2_MAX_NUM_LDB_PORTS - 1;
+
+		if (!hw->rsrcs.ldb_ports[prev].owned &&
+		    hw->rsrcs.ldb_ports[next].owned &&
+		    hw->rsrcs.ldb_ports[next].domain_id.phys_id != domain_id)
+			return port;
+
+		if (!hw->rsrcs.ldb_ports[next].owned &&
+		    hw->rsrcs.ldb_ports[prev].owned &&
+		    hw->rsrcs.ldb_ports[prev].domain_id.phys_id != domain_id)
+			return port;
+	}
+
+	/*
+	 * Failing that, the driver looks for a port with both neighbors
+	 * unallocated.
+	 */
+	DLB2_FUNC_LIST_FOR(rsrcs->avail_ldb_ports[cos_id], port, iter) {
+		u32 next, prev;
+		u32 phys_id;
+
+		phys_id = port->id.phys_id;
+		next = phys_id + 1;
+		prev = phys_id - 1;
+
+		if (phys_id == DLB2_MAX_NUM_LDB_PORTS - 1)
+			next = 0;
+		if (phys_id == 0)
+			prev = DLB2_MAX_NUM_LDB_PORTS - 1;
+
+		if (!hw->rsrcs.ldb_ports[prev].owned &&
+		    !hw->rsrcs.ldb_ports[next].owned)
+			return port;
+	}
+
+	/* If all else fails, the driver returns the next available port. */
+	return DLB2_FUNC_LIST_HEAD(rsrcs->avail_ldb_ports[cos_id],
+				   typeof(*port));
+}
+
+static int __dlb2_attach_ldb_ports(struct dlb2_hw *hw,
+				   struct dlb2_function_resources *rsrcs,
+				   struct dlb2_hw_domain *domain,
+				   u32 num_ports,
+				   u32 cos_id,
+				   struct dlb2_cmd_response *resp)
+{
+	unsigned int i;
+
+	if (rsrcs->num_avail_ldb_ports[cos_id] < num_ports) {
+		resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	for (i = 0; i < num_ports; i++) {
+		struct dlb2_ldb_port *port;
+
+		port = dlb2_get_next_ldb_port(hw, rsrcs,
+					      domain->id.phys_id, cos_id);
+		if (port == NULL) {
+			DLB2_HW_ERR(hw,
+				    "[%s()] Internal error: domain validation failed\n",
+				    __func__);
+			return -EFAULT;
+		}
+
+		dlb2_list_del(&rsrcs->avail_ldb_ports[cos_id],
+			      &port->func_list);
+
+		port->domain_id = domain->id;
+		port->owned = true;
+
+		dlb2_list_add(&domain->avail_ldb_ports[cos_id],
+			      &port->domain_list);
+	}
+
+	rsrcs->num_avail_ldb_ports[cos_id] -= num_ports;
+
+	return 0;
+}
+
+
+static int dlb2_attach_ldb_ports(struct dlb2_hw *hw,
+				 struct dlb2_function_resources *rsrcs,
+				 struct dlb2_hw_domain *domain,
+				 struct dlb2_create_sched_domain_args *args,
+				 struct dlb2_cmd_response *resp)
+{
+	unsigned int i, j;
+	int ret;
+
+	if (args->cos_strict) {
+		for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
+			u32 num = args->num_cos_ldb_ports[i];
+
+			/* Allocate ports from specific classes-of-service */
+			ret = __dlb2_attach_ldb_ports(hw,
+						      rsrcs,
+						      domain,
+						      num,
+						      i,
+						      resp);
+			if (ret)
+				return ret;
+		}
+	} else {
+		unsigned int k;
+		u32 cos_id;
+
+		/*
+		 * Attempt to allocate from specific class-of-service, but
+		 * fallback to the other classes if that fails.
+		 */
+		for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
+			for (j = 0; j < args->num_cos_ldb_ports[i]; j++) {
+				for (k = 0; k < DLB2_NUM_COS_DOMAINS; k++) {
+					cos_id = (i + k) % DLB2_NUM_COS_DOMAINS;
+
+					ret = __dlb2_attach_ldb_ports(hw,
+								      rsrcs,
+								      domain,
+								      1,
+								      cos_id,
+								      resp);
+					if (ret == 0)
+						break;
+				}
+
+				if (ret)
+					return ret;
+			}
+		}
+	}
+
+	/* Allocate num_ldb_ports from any class-of-service */
+	for (i = 0; i < args->num_ldb_ports; i++) {
+		for (j = 0; j < DLB2_NUM_COS_DOMAINS; j++) {
+			ret = __dlb2_attach_ldb_ports(hw,
+						      rsrcs,
+						      domain,
+						      1,
+						      j,
+						      resp);
+			if (ret == 0)
+				break;
+		}
+
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int dlb2_attach_dir_ports(struct dlb2_hw *hw,
+				 struct dlb2_function_resources *rsrcs,
+				 struct dlb2_hw_domain *domain,
+				 u32 num_ports,
+				 struct dlb2_cmd_response *resp)
+{
+	unsigned int i;
+
+	if (rsrcs->num_avail_dir_pq_pairs < num_ports) {
+		resp->status = DLB2_ST_DIR_PORTS_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	for (i = 0; i < num_ports; i++) {
+		struct dlb2_dir_pq_pair *port;
+
+		port = DLB2_FUNC_LIST_HEAD(rsrcs->avail_dir_pq_pairs,
+					   typeof(*port));
+		if (port == NULL) {
+			DLB2_HW_ERR(hw,
+				    "[%s()] Internal error: domain validation failed\n",
+				    __func__);
+			return -EFAULT;
+		}
+
+		dlb2_list_del(&rsrcs->avail_dir_pq_pairs, &port->func_list);
+
+		port->domain_id = domain->id;
+		port->owned = true;
+
+		dlb2_list_add(&domain->avail_dir_pq_pairs, &port->domain_list);
+	}
+
+	rsrcs->num_avail_dir_pq_pairs -= num_ports;
+
+	return 0;
+}
+
+static int dlb2_attach_ldb_credits(struct dlb2_function_resources *rsrcs,
+				   struct dlb2_hw_domain *domain,
+				   u32 num_credits,
+				   struct dlb2_cmd_response *resp)
+{
+	if (rsrcs->num_avail_qed_entries < num_credits) {
+		resp->status = DLB2_ST_LDB_CREDITS_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	rsrcs->num_avail_qed_entries -= num_credits;
+	domain->num_ldb_credits += num_credits;
+	return 0;
+}
+
+static int dlb2_attach_dir_credits(struct dlb2_function_resources *rsrcs,
+				   struct dlb2_hw_domain *domain,
+				   u32 num_credits,
+				   struct dlb2_cmd_response *resp)
+{
+	if (rsrcs->num_avail_dqed_entries < num_credits) {
+		resp->status = DLB2_ST_DIR_CREDITS_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	rsrcs->num_avail_dqed_entries -= num_credits;
+	domain->num_dir_credits += num_credits;
+	return 0;
+}
+
+
+static int dlb2_attach_atomic_inflights(struct dlb2_function_resources *rsrcs,
+					struct dlb2_hw_domain *domain,
+					u32 num_atomic_inflights,
+					struct dlb2_cmd_response *resp)
+{
+	if (rsrcs->num_avail_aqed_entries < num_atomic_inflights) {
+		resp->status = DLB2_ST_ATOMIC_INFLIGHTS_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	rsrcs->num_avail_aqed_entries -= num_atomic_inflights;
+	domain->num_avail_aqed_entries += num_atomic_inflights;
+	return 0;
+}
+
+static int
+dlb2_attach_domain_hist_list_entries(struct dlb2_function_resources *rsrcs,
+				     struct dlb2_hw_domain *domain,
+				     u32 num_hist_list_entries,
+				     struct dlb2_cmd_response *resp)
+{
+	struct dlb2_bitmap *bitmap;
+	int base;
+
+	if (num_hist_list_entries) {
+		bitmap = rsrcs->avail_hist_list_entries;
+
+		base = dlb2_bitmap_find_set_bit_range(bitmap,
+						      num_hist_list_entries);
+		if (base < 0)
+			goto error;
+
+		domain->total_hist_list_entries = num_hist_list_entries;
+		domain->avail_hist_list_entries = num_hist_list_entries;
+		domain->hist_list_entry_base = base;
+		domain->hist_list_entry_offset = 0;
+
+		dlb2_bitmap_clear_range(bitmap, base, num_hist_list_entries);
+	}
+	return 0;
+
+error:
+	resp->status = DLB2_ST_HIST_LIST_ENTRIES_UNAVAILABLE;
+	return -EINVAL;
+}
+
+static int dlb2_attach_ldb_queues(struct dlb2_hw *hw,
+				  struct dlb2_function_resources *rsrcs,
+				  struct dlb2_hw_domain *domain,
+				  u32 num_queues,
+				  struct dlb2_cmd_response *resp)
+{
+	unsigned int i;
+
+	if (rsrcs->num_avail_ldb_queues < num_queues) {
+		resp->status = DLB2_ST_LDB_QUEUES_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	for (i = 0; i < num_queues; i++) {
+		struct dlb2_ldb_queue *queue;
+
+		queue = DLB2_FUNC_LIST_HEAD(rsrcs->avail_ldb_queues,
+					    typeof(*queue));
+		if (queue == NULL) {
+			DLB2_HW_ERR(hw,
+				    "[%s()] Internal error: domain validation failed\n",
+				    __func__);
+			return -EFAULT;
+		}
+
+		dlb2_list_del(&rsrcs->avail_ldb_queues, &queue->func_list);
+
+		queue->domain_id = domain->id;
+		queue->owned = true;
+
+		dlb2_list_add(&domain->avail_ldb_queues, &queue->domain_list);
+	}
+
+	rsrcs->num_avail_ldb_queues -= num_queues;
+
+	return 0;
+}
+
+static int
+dlb2_domain_attach_resources(struct dlb2_hw *hw,
+			     struct dlb2_function_resources *rsrcs,
+			     struct dlb2_hw_domain *domain,
+			     struct dlb2_create_sched_domain_args *args,
+			     struct dlb2_cmd_response *resp)
+{
+	int ret;
+
+	ret = dlb2_attach_ldb_queues(hw,
+				     rsrcs,
+				     domain,
+				     args->num_ldb_queues,
+				     resp);
+	if (ret)
+		return ret;
+
+	ret = dlb2_attach_ldb_ports(hw,
+				    rsrcs,
+				    domain,
+				    args,
+				    resp);
+	if (ret)
+		return ret;
+
+	ret = dlb2_attach_dir_ports(hw,
+				    rsrcs,
+				    domain,
+				    args->num_dir_ports,
+				    resp);
+	if (ret)
+		return ret;
+
+	if (hw->ver == DLB2_HW_V2) {
+		ret = dlb2_attach_ldb_credits(rsrcs,
+					      domain,
+					      args->num_ldb_credits,
+					      resp);
+		if (ret)
+			return ret;
+
+		ret = dlb2_attach_dir_credits(rsrcs,
+					      domain,
+					      args->num_dir_credits,
+					      resp);
+		if (ret)
+			return ret;
+	} else {  /* DLB 2.5 */
+		ret = dlb2_attach_credits(rsrcs,
+					  domain,
+					  args->num_credits,
+					  resp);
+		if (ret)
+			return ret;
+	}
+
+	ret = dlb2_attach_domain_hist_list_entries(rsrcs,
+						   domain,
+						   args->num_hist_list_entries,
+						   resp);
+	if (ret)
+		return ret;
+
+	ret = dlb2_attach_atomic_inflights(rsrcs,
+					   domain,
+					   args->num_atomic_inflights,
+					   resp);
+	if (ret)
+		return ret;
+
+	dlb2_configure_domain_credits(hw, domain);
+
+	domain->configured = true;
+
+	domain->started = false;
+
+	rsrcs->num_avail_domains--;
+
+	return 0;
+}
+
+static int
+dlb2_verify_create_sched_dom_args(struct dlb2_function_resources *rsrcs,
+				  struct dlb2_create_sched_domain_args *args,
+				  struct dlb2_cmd_response *resp,
+				  struct dlb2_hw *hw,
+				  struct dlb2_hw_domain **out_domain)
+{
+	u32 num_avail_ldb_ports, req_ldb_ports;
+	struct dlb2_bitmap *avail_hl_entries;
+	unsigned int max_contig_hl_range;
+	struct dlb2_hw_domain *domain;
+	int i;
+
+	avail_hl_entries = rsrcs->avail_hist_list_entries;
+
+	max_contig_hl_range = dlb2_bitmap_longest_set_range(avail_hl_entries);
+
+	num_avail_ldb_ports = 0;
+	req_ldb_ports = 0;
+	for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) {
+		num_avail_ldb_ports += rsrcs->num_avail_ldb_ports[i];
+
+		req_ldb_ports += args->num_cos_ldb_ports[i];
+	}
+
+	req_ldb_ports += args->num_ldb_ports;
+
+	if (rsrcs->num_avail_domains < 1) {
+		resp->status = DLB2_ST_DOMAIN_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	domain = DLB2_FUNC_LIST_HEAD(rsrcs->avail_domains, typeof(*domain));
+	if (domain == NULL) {
+		resp->status = DLB2_ST_DOMAIN_UNAVAILABLE;
+		return -EFAULT;
+	}
+
+	if (rsrcs->num_avail_ldb_queues < args->num_ldb_queues) {
+		resp->status = DLB2_ST_LDB_QUEUES_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	if (req_ldb_ports > num_avail_ldb_ports) {
+		resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	for (i = 0; args->cos_strict && i < DLB2_NUM_COS_DOMAINS; i++) {
+		if (args->num_cos_ldb_ports[i] >
+		    rsrcs->num_avail_ldb_ports[i]) {
+			resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE;
+			return -EINVAL;
+		}
+	}
+
+	if (args->num_ldb_queues > 0 && req_ldb_ports == 0) {
+		resp->status = DLB2_ST_LDB_PORT_REQUIRED_FOR_LDB_QUEUES;
+		return -EINVAL;
+	}
+
+	if (rsrcs->num_avail_dir_pq_pairs < args->num_dir_ports) {
+		resp->status = DLB2_ST_DIR_PORTS_UNAVAILABLE;
+		return -EINVAL;
+	}
+	if (hw->ver == DLB2_HW_V2_5) {
+		if (rsrcs->num_avail_entries < args->num_credits) {
+			resp->status = DLB2_ST_CREDITS_UNAVAILABLE;
+			return -EINVAL;
+		}
+	} else {
+		if (rsrcs->num_avail_qed_entries < args->num_ldb_credits) {
+			resp->status = DLB2_ST_LDB_CREDITS_UNAVAILABLE;
+			return -EINVAL;
+		}
+		if (rsrcs->num_avail_dqed_entries < args->num_dir_credits) {
+			resp->status = DLB2_ST_DIR_CREDITS_UNAVAILABLE;
+			return -EINVAL;
+		}
+	}
+
+	if (rsrcs->num_avail_aqed_entries < args->num_atomic_inflights) {
+		resp->status = DLB2_ST_ATOMIC_INFLIGHTS_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	if (max_contig_hl_range < args->num_hist_list_entries) {
+		resp->status = DLB2_ST_HIST_LIST_ENTRIES_UNAVAILABLE;
+		return -EINVAL;
+	}
+
+	*out_domain = domain;
+
+	return 0;
+}
+
+static void
+dlb2_log_create_sched_domain_args(struct dlb2_hw *hw,
+				  struct dlb2_create_sched_domain_args *args,
+				  bool vdev_req,
+				  unsigned int vdev_id)
+{
+	DLB2_HW_DBG(hw, "DLB2 create sched domain arguments:\n");
+	if (vdev_req)
+		DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
+	DLB2_HW_DBG(hw, "\tNumber of LDB queues:          %d\n",
+		    args->num_ldb_queues);
+	DLB2_HW_DBG(hw, "\tNumber of LDB ports (any CoS): %d\n",
+		    args->num_ldb_ports);
+	DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 0):   %d\n",
+		    args->num_cos_ldb_ports[0]);
+	DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 1):   %d\n",
+		    args->num_cos_ldb_ports[1]);
+	DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 2):   %d\n",
+		    args->num_cos_ldb_ports[2]);
+	DLB2_HW_DBG(hw, "\tNumber of LDB ports (CoS 3):   %d\n",
+		    args->num_cos_ldb_ports[3]);
+	DLB2_HW_DBG(hw, "\tStrict CoS allocation:         %d\n",
+		    args->cos_strict);
+	DLB2_HW_DBG(hw, "\tNumber of DIR ports:           %d\n",
+		    args->num_dir_ports);
+	DLB2_HW_DBG(hw, "\tNumber of ATM inflights:       %d\n",
+		    args->num_atomic_inflights);
+	DLB2_HW_DBG(hw, "\tNumber of hist list entries:   %d\n",
+		    args->num_hist_list_entries);
+	if (hw->ver == DLB2_HW_V2) {
+		DLB2_HW_DBG(hw, "\tNumber of LDB credits:         %d\n",
+			    args->num_ldb_credits);
+		DLB2_HW_DBG(hw, "\tNumber of DIR credits:         %d\n",
+			    args->num_dir_credits);
+	} else {
+		DLB2_HW_DBG(hw, "\tNumber of credits:         %d\n",
+			    args->num_credits);
+	}
+}
+
+/**
+ * dlb2_hw_create_sched_domain() - create a scheduling domain
+ * @hw: dlb2_hw handle for a particular device.
+ * @args: scheduling domain creation arguments.
+ * @resp: response structure.
+ * @vdev_req: indicates whether this request came from a vdev.
+ * @vdev_id: If vdev_req is true, this contains the vdev's ID.
+ *
+ * This function creates a scheduling domain containing the resources specified
+ * in args. The individual resources (queues, ports, credits) can be configured
+ * after creating a scheduling domain.
+ *
+ * A vdev can be either an SR-IOV virtual function or a Scalable IOV virtual
+ * device.
+ *
+ * Return:
+ * Returns 0 upon success, < 0 otherwise. If an error occurs, resp->status is
+ * assigned a detailed error code from enum dlb2_error. If successful, resp->id
+ * contains the domain ID.
+ *
+ * resp->id contains a virtual ID if vdev_req is true.
+ *
+ * Errors:
+ * EINVAL - A requested resource is unavailable, or the requested domain name
+ *	    is already in use.
+ * EFAULT - Internal error (resp->status not set).
+ */
+int dlb2_hw_create_sched_domain(struct dlb2_hw *hw,
+				struct dlb2_create_sched_domain_args *args,
+				struct dlb2_cmd_response *resp,
+				bool vdev_req,
+				unsigned int vdev_id)
+{
+	struct dlb2_function_resources *rsrcs;
+	struct dlb2_hw_domain *domain;
+	int ret;
+
+	rsrcs = (vdev_req) ? &hw->vdev[vdev_id] : &hw->pf;
+
+	dlb2_log_create_sched_domain_args(hw, args, vdev_req, vdev_id);
+
+	/*
+	 * Verify that hardware resources are available before attempting to
+	 * satisfy the request. This simplifies the error unwinding code.
+	 */
+	ret = dlb2_verify_create_sched_dom_args(rsrcs, args, resp, hw, &domain);
+	if (ret)
+		return ret;
+
+	dlb2_init_domain_rsrc_lists(domain);
+
+	ret = dlb2_domain_attach_resources(hw, rsrcs, domain, args, resp);
+	if (ret) {
+		DLB2_HW_ERR(hw,
+			    "[%s()] Internal error: failed to verify args.\n",
+			    __func__);
+
+		return ret;
+	}
+
+	dlb2_list_del(&rsrcs->avail_domains, &domain->func_list);
+
+	dlb2_list_add(&rsrcs->used_domains, &domain->func_list);
+
+	resp->id = (vdev_req) ? domain->id.virt_id : domain->id.phys_id;
+	resp->status = 0;
+
+	return 0;
+}
-- 
2.23.0