Subject: [PATCH iwl-next v7 08/15] ice: init flag redirect table for parser

From: Junfeng Guo <[email-masked]>
Date: Wed, 23 Aug 2023 17:31:51 +0800

Parse DDP section ICE_SID_RXPARSER_FLAG_REDIR into an array of
ice_flag_rd_item.

Signed-off-by: Junfeng Guo <[email-masked]>
---
 drivers/net/ethernet/intel/ice/ice_ddp.h    |  1 +
 drivers/net/ethernet/intel/ice/ice_flg_rd.c | 50 +++++++++++++++++++++
 drivers/net/ethernet/intel/ice/ice_flg_rd.h | 23 ++++++++++
 drivers/net/ethernet/intel/ice/ice_parser.c | 10 +++++
 drivers/net/ethernet/intel/ice/ice_parser.h |  4 ++
 5 files changed, 88 insertions(+)
 create mode 100644 drivers/net/ethernet/intel/ice/ice_flg_rd.c
 create mode 100644 drivers/net/ethernet/intel/ice/ice_flg_rd.h

diff --git a/drivers/net/ethernet/intel/ice/ice_ddp.h b/drivers/net/ethernet/intel/ice/ice_ddp.h
index da5dfeed3b1f..45beed8b4415 100644
--- a/drivers/net/ethernet/intel/ice/ice_ddp.h
+++ b/drivers/net/ethernet/intel/ice/ice_ddp.h
@@ -261,6 +261,7 @@ struct ice_meta_sect {
 #define ICE_SID_CDID_KEY_BUILDER_PE 87
 #define ICE_SID_CDID_REDIR_PE 88
 
+#define ICE_SID_RXPARSER_FLAG_REDIR	97
 /* Label Metadata section IDs */
 #define ICE_SID_LBL_FIRST 0x80000010
 #define ICE_SID_LBL_RXPARSER_TMEM 0x80000018
diff --git a/drivers/net/ethernet/intel/ice/ice_flg_rd.c b/drivers/net/ethernet/intel/ice/ice_flg_rd.c
new file mode 100644
index 000000000000..9d5d66d0c773
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_flg_rd.c
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "ice_common.h"
+#include "ice_parser_util.h"
+
+/**
+ * ice_flg_rd_dump - dump a flag redirect item info
+ * @hw: pointer to the hardware structure
+ * @item: flag redirect item to dump
+ */
+void ice_flg_rd_dump(struct ice_hw *hw, struct ice_flg_rd_item *item)
+{
+	dev_info(ice_hw_to_dev(hw), "index = %d\n", item->idx);
+	dev_info(ice_hw_to_dev(hw), "expose = %d\n", item->expose);
+	dev_info(ice_hw_to_dev(hw), "intr_flg_id = %d\n", item->intr_flg_id);
+}
+
+/** The function parses a 8 bits Flag Redirect Table entry with below format:
+ *  BIT 0:	Expose			(rdi->expose)
+ *  BIT 1-6:	Internal Flag ID	(rdi->intr_flg_id)
+ *  BIT 7:	reserved
+ */
+static void _ice_flg_rd_parse_item(struct ice_hw *hw, u16 idx, void *item,
+				   void *data, int size)
+{
+	struct ice_flg_rd_item *rdi = item;
+	u8 d8 = *(u8 *)data;
+
+	rdi->idx		= idx;
+	rdi->expose		= !!(d8 & ICE_RDI_EXP_M);
+	rdi->intr_flg_id	= (u8)((d8 >> ICE_RDI_IFD_S) & ICE_RDI_IFD_M);
+
+	if (hw->debug_mask & ICE_DBG_PARSER)
+		ice_flg_rd_dump(hw, rdi);
+}
+
+/**
+ * ice_flg_rd_table_get - create a flag redirect table
+ * @hw: pointer to the hardware structure
+ */
+struct ice_flg_rd_item *ice_flg_rd_table_get(struct ice_hw *hw)
+{
+	return (struct ice_flg_rd_item *)
+		ice_parser_create_table(hw, ICE_SID_RXPARSER_FLAG_REDIR,
+					sizeof(struct ice_flg_rd_item),
+					ICE_FLG_RD_TABLE_SIZE,
+					ice_parser_sect_item_get,
+					_ice_flg_rd_parse_item, false);
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_flg_rd.h b/drivers/net/ethernet/intel/ice/ice_flg_rd.h
new file mode 100644
index 000000000000..b3b4fd7a9002
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_flg_rd.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _ICE_FLG_RD_H_
+#define _ICE_FLG_RD_H_
+
+#define ICE_FLG_RD_TABLE_SIZE	64
+#define ICE_FLG_RDT_SIZE	64
+
+#define ICE_RDI_EXP_S		0
+#define ICE_RDI_EXP_M		BITMAP_MASK(1)
+#define ICE_RDI_IFD_S		1
+#define ICE_RDI_IFD_M		BITMAP_MASK(6)
+
+struct ice_flg_rd_item {
+	u16 idx;
+	bool expose;
+	u8 intr_flg_id;
+};
+
+void ice_flg_rd_dump(struct ice_hw *hw, struct ice_flg_rd_item *item);
+struct ice_flg_rd_item *ice_flg_rd_table_get(struct ice_hw *hw);
+#endif /* _ICE_FLG_RD_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_parser.c b/drivers/net/ethernet/intel/ice/ice_parser.c
index 4da2d4c21bab..3c3f7d6bea52 100644
--- a/drivers/net/ethernet/intel/ice/ice_parser.c
+++ b/drivers/net/ethernet/intel/ice/ice_parser.c
@@ -68,6 +68,9 @@ void *ice_parser_sect_item_get(u32 sect_type, void *section,
 	case ICE_SID_RXPARSER_PROTO_GRP:
 		size = ICE_SID_RXPARSER_PROTO_GRP_ENTRY_SIZE;
 		break;
+	case ICE_SID_RXPARSER_FLAG_REDIR:
+		size = ICE_SID_RXPARSER_FLAG_REDIR_ENTRY_SIZE;
+		break;
 	default:
 		return NULL;
 	}
@@ -220,6 +223,12 @@ int ice_parser_create(struct ice_hw *hw, struct ice_parser **psr)
 		goto err;
 	}
 
+	p->flg_rd_table = ice_flg_rd_table_get(hw);
+	if (!p->flg_rd_table) {
+		status = -EINVAL;
+		goto err;
+	}
+
 	*psr = p;
 	return 0;
 err:
@@ -244,6 +253,7 @@ void ice_parser_destroy(struct ice_parser *psr)
 	devm_kfree(ice_hw_to_dev(psr->hw), psr->ptype_mk_tcam_table);
 	devm_kfree(ice_hw_to_dev(psr->hw), psr->mk_grp_table);
 	devm_kfree(ice_hw_to_dev(psr->hw), psr->proto_grp_table);
+	devm_kfree(ice_hw_to_dev(psr->hw), psr->flg_rd_table);
 
 	devm_kfree(ice_hw_to_dev(psr->hw), psr);
 }
diff --git a/drivers/net/ethernet/intel/ice/ice_parser.h b/drivers/net/ethernet/intel/ice/ice_parser.h
index 4038833450f2..62123788e0a2 100644
--- a/drivers/net/ethernet/intel/ice/ice_parser.h
+++ b/drivers/net/ethernet/intel/ice/ice_parser.h
@@ -11,6 +11,7 @@
 #include "ice_ptype_mk.h"
 #include "ice_mk_grp.h"
 #include "ice_proto_grp.h"
+#include "ice_flg_rd.h"
 
 #define ICE_SEC_DATA_OFFSET				4
 #define ICE_SID_RXPARSER_IMEM_ENTRY_SIZE		48
@@ -23,6 +24,7 @@
 #define ICE_SID_RXPARSER_MARKER_TYPE_ENTRY_SIZE		24
 #define ICE_SID_RXPARSER_MARKER_GRP_ENTRY_SIZE		8
 #define ICE_SID_RXPARSER_PROTO_GRP_ENTRY_SIZE		24
+#define ICE_SID_RXPARSER_FLAG_REDIR_ENTRY_SIZE		1
 
 #define ICE_SEC_LBL_DATA_OFFSET				2
 #define ICE_SID_LBL_ENTRY_SIZE				66
@@ -52,6 +54,8 @@ struct ice_parser {
 	struct ice_mk_grp_item *mk_grp_table;
 	/* load data from section ICE_SID_RXPARSER_PROTO_GRP */
 	struct ice_proto_grp_item *proto_grp_table;
+	/* load data from section ICE_SID_RXPARSER_FLAG_REDIR */
+	struct ice_flg_rd_item *flg_rd_table;
 };
 
 int ice_parser_create(struct ice_hw *hw, struct ice_parser **psr);
-- 
2.25.1