[dpdk-dev] [PATCH v2 03/27] common/cnxk: support RoC API to get profile count

[<skori@marvell.com>]

From: Sunil Kumar Kori <skori@marvell.com>

Implement interface to get available profile count for given
nixlf.

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
---
v2:
 - Rebase support on latest DPDK
 - Handled multilevel chaining for linear hierarchy
 - Review comments incorporated

 drivers/common/cnxk/roc_nix.h     |  5 ++++
 drivers/common/cnxk/roc_nix_bpf.c | 46 +++++++++++++++++++++++++++++++
 drivers/common/cnxk/version.map   |  1 +
 3 files changed, 52 insertions(+)

diff --git a/drivers/common/cnxk/roc_nix.h b/drivers/common/cnxk/roc_nix.h
index 1488c24f59..3d3e169977 100644
--- a/drivers/common/cnxk/roc_nix.h
+++ b/drivers/common/cnxk/roc_nix.h
@@ -7,6 +7,7 @@
 
 /* Constants */
 #define ROC_NIX_BPF_LEVEL_IDX_INVALID 0xFF
+#define ROC_NIX_BPF_LEVEL_MAX	      3
 
 enum roc_nix_rss_reta_sz {
 	ROC_NIX_RSS_RETA_SZ_64 = 64,
@@ -477,6 +478,10 @@ int __roc_api roc_nix_tm_node_name_get(struct roc_nix *roc_nix,
 				       uint32_t node_id, char *buf,
 				       size_t buflen);
 /* Ingress Policer API */
+int __roc_api
+roc_nix_bpf_count_get(struct roc_nix *roc_nix, uint8_t lvl_mask,
+		      uint16_t count[ROC_NIX_BPF_LEVEL_MAX] /* Out */);
+
 uint8_t __roc_api
 roc_nix_bpf_level_to_idx(enum roc_nix_bpf_level_flag lvl_flag);
 
diff --git a/drivers/common/cnxk/roc_nix_bpf.c b/drivers/common/cnxk/roc_nix_bpf.c
index b588cc16e4..af9dffa90c 100644
--- a/drivers/common/cnxk/roc_nix_bpf.c
+++ b/drivers/common/cnxk/roc_nix_bpf.c
@@ -5,6 +5,14 @@
 #include "roc_api.h"
 #include "roc_priv.h"
 
+#define NIX_MAX_BPF_COUNT_LEAF_LAYER 64
+#define NIX_MAX_BPF_COUNT_MID_LAYER  8
+#define NIX_MAX_BPF_COUNT_TOP_LAYER  1
+
+#define NIX_BPF_LEVEL_F_MASK                                                   \
+	(ROC_NIX_BPF_LEVEL_F_LEAF | ROC_NIX_BPF_LEVEL_F_MID |                  \
+	 ROC_NIX_BPF_LEVEL_F_TOP)
+
 uint8_t
 roc_nix_bpf_level_to_idx(enum roc_nix_bpf_level_flag level_f)
 {
@@ -20,3 +28,41 @@ roc_nix_bpf_level_to_idx(enum roc_nix_bpf_level_flag level_f)
 		idx = ROC_NIX_BPF_LEVEL_IDX_INVALID;
 	return idx;
 }
+
+int
+roc_nix_bpf_count_get(struct roc_nix *roc_nix, uint8_t lvl_mask,
+		      uint16_t count[ROC_NIX_BPF_LEVEL_MAX])
+{
+	uint8_t mask = lvl_mask & NIX_BPF_LEVEL_F_MASK;
+	uint8_t leaf_idx, mid_idx, top_idx;
+
+	PLT_SET_USED(roc_nix);
+
+	if (roc_model_is_cn9k())
+		return NIX_ERR_HW_NOTSUP;
+
+	if (!mask)
+		return NIX_ERR_PARAM;
+
+	/* Currently No MBOX interface is available to get number
+	 * of bandwidth profiles. So numbers per level are hard coded,
+	 * considering 3 RPM blocks and each block has 4 LMAC's.
+	 * So total 12 physical interfaces are in system. Each interface
+	 * supports following bandwidth profiles.
+	 */
+
+	leaf_idx = roc_nix_bpf_level_to_idx(mask & ROC_NIX_BPF_LEVEL_F_LEAF);
+	mid_idx = roc_nix_bpf_level_to_idx(mask & ROC_NIX_BPF_LEVEL_F_MID);
+	top_idx = roc_nix_bpf_level_to_idx(mask & ROC_NIX_BPF_LEVEL_F_TOP);
+
+	if (leaf_idx != ROC_NIX_BPF_LEVEL_IDX_INVALID)
+		count[leaf_idx] = NIX_MAX_BPF_COUNT_LEAF_LAYER;
+
+	if (mid_idx != ROC_NIX_BPF_LEVEL_IDX_INVALID)
+		count[mid_idx] = NIX_MAX_BPF_COUNT_MID_LAYER;
+
+	if (top_idx != ROC_NIX_BPF_LEVEL_IDX_INVALID)
+		count[top_idx] = NIX_MAX_BPF_COUNT_TOP_LAYER;
+
+	return 0;
+}
diff --git a/drivers/common/cnxk/version.map b/drivers/common/cnxk/version.map
index c19f74fe91..790a32e2e0 100644
--- a/drivers/common/cnxk/version.map
+++ b/drivers/common/cnxk/version.map
@@ -77,6 +77,7 @@ INTERNAL {
 	roc_model;
 	roc_se_auth_key_set;
 	roc_se_ciph_key_set;
+	roc_nix_bpf_count_get;
 	roc_nix_bpf_level_to_idx;
 	roc_nix_cq_dump;
 	roc_nix_cq_fini;
-- 
2.25.1