Subject: [PATCH iwl-next v7 01/15] ice: add parser create and destroy skeleton

From: Junfeng Guo <[email-masked]>
Date: Wed, 23 Aug 2023 17:31:44 +0800

Add new parser module which can parse a packet in binary
and generate information like ptype, protocol/offset pairs
and flags which can be used to feed the FXP profile creation
directly.

The patch added skeleton of the create and destroy APIs:
ice_parser_create
ice_parser_destroy

Signed-off-by: Junfeng Guo <[email-masked]>
---
 drivers/net/ethernet/intel/ice/ice_common.h |  4 +++
 drivers/net/ethernet/intel/ice/ice_ddp.c    | 10 +++----
 drivers/net/ethernet/intel/ice/ice_ddp.h    | 13 ++++++++
 drivers/net/ethernet/intel/ice/ice_parser.c | 33 +++++++++++++++++++++
 drivers/net/ethernet/intel/ice/ice_parser.h | 13 ++++++++
 5 files changed, 68 insertions(+), 5 deletions(-)
 create mode 100644 drivers/net/ethernet/intel/ice/ice_parser.c
 create mode 100644 drivers/net/ethernet/intel/ice/ice_parser.h

diff --git a/drivers/net/ethernet/intel/ice/ice_common.h b/drivers/net/ethernet/intel/ice/ice_common.h
index 8ba5f935a092..528dde976373 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.h
+++ b/drivers/net/ethernet/intel/ice/ice_common.h
@@ -9,10 +9,14 @@
 #include "ice_type.h"
 #include "ice_nvm.h"
 #include "ice_flex_pipe.h"
+#include "ice_parser.h"
 #include <linux/avf/virtchnl.h>
 #include "ice_switch.h"
 #include "ice_fdir.h"
 
+#define BITS_PER_WORD	16
+#define BITMAP_MASK(n)	GENMASK(((n) - 1), 0)
+
 #define ICE_SQ_SEND_DELAY_TIME_MS	10
 #define ICE_SQ_SEND_MAX_EXECUTE		3
 
diff --git a/drivers/net/ethernet/intel/ice/ice_ddp.c b/drivers/net/ethernet/intel/ice/ice_ddp.c
index d71ed210f9c4..3bdf03b9ee71 100644
--- a/drivers/net/ethernet/intel/ice/ice_ddp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ddp.c
@@ -288,11 +288,11 @@ void *ice_pkg_enum_section(struct ice_seg *ice_seg, struct ice_pkg_enum *state,
  * indicates a base offset of 10, and the index for the entry is 2, then
  * section handler function should set the offset to 10 + 2 = 12.
  */
-static void *ice_pkg_enum_entry(struct ice_seg *ice_seg,
-				struct ice_pkg_enum *state, u32 sect_type,
-				u32 *offset,
-				void *(*handler)(u32 sect_type, void *section,
-						 u32 index, u32 *offset))
+void *ice_pkg_enum_entry(struct ice_seg *ice_seg,
+			 struct ice_pkg_enum *state, u32 sect_type,
+			 u32 *offset,
+			 void *(*handler)(u32 sect_type, void *section,
+					  u32 index, u32 *offset))
 {
 	void *entry;
 
diff --git a/drivers/net/ethernet/intel/ice/ice_ddp.h b/drivers/net/ethernet/intel/ice/ice_ddp.h
index 37eadb3d27a8..da5dfeed3b1f 100644
--- a/drivers/net/ethernet/intel/ice/ice_ddp.h
+++ b/drivers/net/ethernet/intel/ice/ice_ddp.h
@@ -238,10 +238,18 @@ struct ice_meta_sect {
 #define ICE_SID_CDID_KEY_BUILDER_RSS 47
 #define ICE_SID_CDID_REDIR_RSS 48
 
+#define ICE_SID_RXPARSER_CAM		50
+#define ICE_SID_RXPARSER_NOMATCH_CAM	51
+#define ICE_SID_RXPARSER_IMEM		52
 #define ICE_SID_RXPARSER_MARKER_PTYPE 55
 #define ICE_SID_RXPARSER_BOOST_TCAM 56
+#define ICE_SID_RXPARSER_PROTO_GRP	57
 #define ICE_SID_RXPARSER_METADATA_INIT 58
+#define ICE_SID_TXPARSER_NOMATCH_CAM	61
 #define ICE_SID_TXPARSER_BOOST_TCAM 66
+#define ICE_SID_RXPARSER_MARKER_GRP	72
+#define ICE_SID_RXPARSER_PG_SPILL	76
+#define ICE_SID_RXPARSER_NOMATCH_SPILL	78
 
 #define ICE_SID_XLT0_PE 80
 #define ICE_SID_XLT_KEY_BUILDER_PE 81
@@ -437,6 +445,11 @@ int ice_update_pkg(struct ice_hw *hw, struct ice_buf *bufs, u32 count);
 
 int ice_pkg_buf_reserve_section(struct ice_buf_build *bld, u16 count);
 u16 ice_pkg_buf_get_active_sections(struct ice_buf_build *bld);
+void *
+ice_pkg_enum_entry(struct ice_seg *ice_seg, struct ice_pkg_enum *state,
+		   u32 sect_type, u32 *offset,
+		   void *(*handler)(u32 sect_type, void *section,
+				    u32 index, u32 *offset));
 void *ice_pkg_enum_section(struct ice_seg *ice_seg, struct ice_pkg_enum *state,
 			   u32 sect_type);
 
diff --git a/drivers/net/ethernet/intel/ice/ice_parser.c b/drivers/net/ethernet/intel/ice/ice_parser.c
new file mode 100644
index 000000000000..747dfad66db2
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_parser.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2023 Intel Corporation */
+
+#include "ice_common.h"
+
+/**
+ * ice_parser_create - create a parser instance
+ * @hw: pointer to the hardware structure
+ * @psr: output parameter for a new parser instance be created
+ */
+int ice_parser_create(struct ice_hw *hw, struct ice_parser **psr)
+{
+	struct ice_parser *p;
+
+	p = devm_kzalloc(ice_hw_to_dev(hw), sizeof(struct ice_parser),
+			 GFP_KERNEL);
+	if (!p)
+		return -ENOMEM;
+
+	p->hw = hw;
+
+	*psr = p;
+	return 0;
+}
+
+/**
+ * ice_parser_destroy - destroy a parser instance
+ * @psr: pointer to a parser instance
+ */
+void ice_parser_destroy(struct ice_parser *psr)
+{
+	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
new file mode 100644
index 000000000000..85c470235e67
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_parser.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _ICE_PARSER_H_
+#define _ICE_PARSER_H_
+
+struct ice_parser {
+	struct ice_hw *hw; /* pointer to the hardware structure */
+};
+
+int ice_parser_create(struct ice_hw *hw, struct ice_parser **psr);
+void ice_parser_destroy(struct ice_parser *psr);
+#endif /* _ICE_PARSER_H_ */
-- 
2.25.1