[dpdk-dev] [PATCH v2 29/30] net/dpaa2: add support for soft parser in MC

[Sachin Saxena <sachin.saxena@nxp.com>]

From: Sunil Kumar Kori <sunil.kori@nxp.com>

Signed-off-by: Sunil Kumar Kori <sunil.kori@nxp.com>
Reviewed-by: Sachin Saxena <sachin.saxena@nxp.com>
---
 drivers/net/dpaa2/mc/dpni.c         | 117 ++++++++++++++++++++++++
 drivers/net/dpaa2/mc/fsl_dpni.h     | 133 ++++++++++++++++++++++++++++
 drivers/net/dpaa2/mc/fsl_dpni_cmd.h |  43 ++++++++-
 3 files changed, 292 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dpaa2/mc/dpni.c b/drivers/net/dpaa2/mc/dpni.c
index 362cd476f..b37f9976f 100644
--- a/drivers/net/dpaa2/mc/dpni.c
+++ b/drivers/net/dpaa2/mc/dpni.c
@@ -2484,3 +2484,120 @@ int dpni_get_custom_tpid(struct fsl_mc_io *mc_io, uint32_t cmd_flags,
 
 	return err;
 }
+
+int dpni_load_sw_sequence(struct fsl_mc_io *mc_io,
+	      uint32_t cmd_flags,
+	      uint16_t token,
+		  struct dpni_load_ss_cfg *cfg)
+{
+	struct dpni_load_sw_sequence *cmd_params;
+	struct mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPNI_CMDID_LOAD_SW_SEQUENCE,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dpni_load_sw_sequence *)cmd.params;
+	cmd_params->dest = cfg->dest;
+	cmd_params->ss_offset = cpu_to_le16(cfg->ss_offset);
+	cmd_params->ss_size = cpu_to_le16(cfg->ss_size);
+	cmd_params->ss_iova = cpu_to_le64(cfg->ss_iova);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+int dpni_enable_sw_sequence(struct fsl_mc_io *mc_io,
+	      uint32_t cmd_flags,
+	      uint16_t token,
+		  struct dpni_enable_ss_cfg *cfg)
+{
+	struct dpni_enable_sw_sequence *cmd_params;
+	struct mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPNI_CMDID_ENABLE_SW_SEQUENCE,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dpni_enable_sw_sequence *)cmd.params;
+	cmd_params->dest = cfg->dest;
+	cmd_params->set_start = cfg->set_start;
+	cmd_params->hxs = cpu_to_le16(cfg->hxs);
+	cmd_params->ss_offset = cpu_to_le16(cfg->ss_offset);
+	cmd_params->param_offset = cfg->param_offset;
+	cmd_params->param_size = cfg->param_size;
+	cmd_params->param_iova = cpu_to_le64(cfg->param_iova);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpni_get_sw_sequence_layout() - Get the soft sequence layout
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPNI object
+ * @src:	Source of the layout (WRIOP Rx or Tx)
+ * @ss_layout_iova:  I/O virtual address of 264 bytes DMA-able memory
+ *
+ * warning: After calling this function, call dpni_extract_sw_sequence_layout()
+ *		to get the layout.
+ *
+ * Return:	'0' on Success; error code otherwise.
+ */
+int dpni_get_sw_sequence_layout(struct fsl_mc_io *mc_io,
+	      uint32_t cmd_flags,
+	      uint16_t token,
+		  enum dpni_soft_sequence_dest src,
+		  uint64_t ss_layout_iova)
+{
+	struct dpni_get_sw_sequence_layout *cmd_params;
+	struct mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_SW_SEQUENCE_LAYOUT,
+					  cmd_flags,
+					  token);
+
+	cmd_params = (struct dpni_get_sw_sequence_layout *)cmd.params;
+	cmd_params->src = src;
+	cmd_params->layout_iova = cpu_to_le64(ss_layout_iova);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpni_extract_sw_sequence_layout() - extract the software sequence layout
+ * @layout:		software sequence layout
+ * @sw_sequence_layout_buf:	Zeroed 264 bytes of memory before mapping it
+ *				to DMA
+ *
+ * This function has to be called after dpni_get_sw_sequence_layout
+ *
+ */
+void dpni_extract_sw_sequence_layout(struct dpni_sw_sequence_layout *layout,
+			     const uint8_t *sw_sequence_layout_buf)
+{
+	const struct dpni_sw_sequence_layout_entry *ext_params;
+	int i;
+	uint16_t ss_size, ss_offset;
+
+	ext_params = (const struct dpni_sw_sequence_layout_entry *)
+						sw_sequence_layout_buf;
+
+	for (i = 0; i < DPNI_SW_SEQUENCE_LAYOUT_SIZE; i++) {
+		ss_offset = le16_to_cpu(ext_params[i].ss_offset);
+		ss_size = le16_to_cpu(ext_params[i].ss_size);
+
+		if (ss_offset == 0 && ss_size == 0) {
+			layout->num_ss = i;
+			return;
+		}
+
+		layout->ss[i].ss_offset = ss_offset;
+		layout->ss[i].ss_size = ss_size;
+		layout->ss[i].param_offset = ext_params[i].param_offset;
+		layout->ss[i].param_size = ext_params[i].param_size;
+	}
+}
diff --git a/drivers/net/dpaa2/mc/fsl_dpni.h b/drivers/net/dpaa2/mc/fsl_dpni.h
index 8b1cfbac7..97fde316e 100644
--- a/drivers/net/dpaa2/mc/fsl_dpni.h
+++ b/drivers/net/dpaa2/mc/fsl_dpni.h
@@ -96,6 +96,12 @@ struct fsl_mc_io;
  */
 #define DPNI_OPT_CUSTOM_CG				0x000200
 
+
+/**
+ * Software sequence maximum layout size
+ */
+#define DPNI_SW_SEQUENCE_LAYOUT_SIZE 33
+
 int dpni_open(struct fsl_mc_io *mc_io,
 	      uint32_t cmd_flags,
 	      int dpni_id,
@@ -1424,4 +1430,131 @@ struct dpni_custom_tpid_cfg {
 int dpni_get_custom_tpid(struct fsl_mc_io *mc_io, uint32_t cmd_flags,
 		uint16_t token, struct dpni_custom_tpid_cfg *tpid);
 
+/**
+ * enum dpni_soft_sequence_dest - Enumeration of WRIOP software sequence
+ *				destinations
+ * @DPNI_SS_INGRESS: Ingress parser
+ * @DPNI_SS_EGRESS: Egress parser
+ */
+enum dpni_soft_sequence_dest {
+	DPNI_SS_INGRESS = 0,
+	DPNI_SS_EGRESS = 1,
+};
+
+/**
+ * struct dpni_load_ss_cfg - Structure for Software Sequence load configuration
+ * @dest:	Destination of the Software Sequence: ingress or egress parser
+ * @ss_size: Size of the Software Sequence
+ * @ss_offset:	The offset where to load the Software Sequence (0x20-0x7FD)
+ * @ss_iova: I/O virtual address of the Software Sequence
+ */
+struct dpni_load_ss_cfg {
+	enum dpni_soft_sequence_dest dest;
+	uint16_t ss_size;
+	uint16_t ss_offset;
+	uint64_t ss_iova;
+};
+
+/**
+ * struct dpni_enable_ss_cfg - Structure for software sequence enable
+ *				configuration
+ * @dest:	Destination of the Software Sequence: ingress or egress parser
+ * @hxs: HXS to attach the software sequence to
+ * @set_start: If the Software Sequence or HDR it is attached to is set as
+ *		parser start
+ *		If hxs=DUMMY_LAST_HXS the ss_offset is set directly as parser
+ *			start else the hdr index code is set as parser start
+ * @ss_offset: The offset of the Software Sequence to enable or set as parse
+ *		start
+ * @param_size: Size of the software sequence parameters
+ * @param_offset: Offset in the parameter zone for the software sequence
+ *			parameters
+ * @param_iova: I/O virtual address of the parameters
+ */
+struct dpni_enable_ss_cfg {
+	enum dpni_soft_sequence_dest dest;
+	uint16_t hxs;
+	uint8_t set_start;
+	uint16_t ss_offset;
+	uint8_t param_size;
+	uint8_t param_offset;
+	uint64_t param_iova;
+};
+
+/**
+ * dpni_load_sw_sequence() - Loads a software sequence in parser memory.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPNI object
+ * @cfg:	Software sequence load configuration
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpni_load_sw_sequence(struct fsl_mc_io *mc_io,
+	      uint32_t cmd_flags,
+	      uint16_t token,
+		  struct dpni_load_ss_cfg *cfg);
+
+/**
+ * dpni_eanble_sw_sequence() - Enables a software sequence in the parser
+ *				profile
+ * corresponding to the ingress or egress of the DPNI.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPNI object
+ * @cfg:	Software sequence enable configuration
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpni_enable_sw_sequence(struct fsl_mc_io *mc_io,
+			    uint32_t cmd_flags,
+			    uint16_t token,
+			    struct dpni_enable_ss_cfg *cfg);
+
+/**
+ * struct dpni_sw_sequence_layout - Structure for software sequence enable
+ *				configuration
+ * @num_ss:	Number of software sequences returned
+ * @ss: Array of software sequence entries. The number of valid entries
+ *			must match 'num_ss' value
+ */
+struct dpni_sw_sequence_layout {
+	uint8_t num_ss;
+	struct {
+		uint16_t ss_offset;
+		uint16_t ss_size;
+		uint8_t param_offset;
+		uint8_t param_size;
+	} ss[DPNI_SW_SEQUENCE_LAYOUT_SIZE];
+};
+
+/**
+ * dpni_get_sw_sequence_layout() - Get the soft sequence layout
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPNI object
+ * @src:	Source of the layout (WRIOP Rx or Tx)
+ * @ss_layout_iova:  I/O virtual address of 264 bytes DMA-able memory
+ *
+ * warning: After calling this function, call dpni_extract_sw_sequence_layout()
+ *		to get the layout
+ *
+ * Return:	'0' on Success; error code otherwise.
+ */
+int dpni_get_sw_sequence_layout(struct fsl_mc_io *mc_io,
+				uint32_t cmd_flags,
+				uint16_t token,
+				enum dpni_soft_sequence_dest src,
+				uint64_t ss_layout_iova);
+
+/**
+ * dpni_extract_sw_sequence_layout() - extract the software sequence layout
+ * @layout:		software sequence layout
+ * @sw_sequence_layout_buf:	Zeroed 264 bytes of memory before mapping it
+ *				to DMA
+ *
+ * This function has to be called after dpni_get_sw_sequence_layout
+ *
+ */
+void dpni_extract_sw_sequence_layout(struct dpni_sw_sequence_layout *layout,
+				     const uint8_t *sw_sequence_layout_buf);
+
 #endif /* __FSL_DPNI_H */
diff --git a/drivers/net/dpaa2/mc/fsl_dpni_cmd.h b/drivers/net/dpaa2/mc/fsl_dpni_cmd.h
index 5effbb300..dfaccd91c 100644
--- a/drivers/net/dpaa2/mc/fsl_dpni_cmd.h
+++ b/drivers/net/dpaa2/mc/fsl_dpni_cmd.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
  *
  * Copyright 2013-2016 Freescale Semiconductor Inc.
- * Copyright 2016-2017 NXP
+ * Copyright 2016-2019 NXP
  *
  */
 #ifndef _FSL_DPNI_CMD_H
@@ -97,6 +97,9 @@
 #define DPNI_CMDID_SET_OFFLOAD			DPNI_CMD(0x26C)
 #define DPNI_CMDID_SET_TX_CONFIRMATION_MODE	DPNI_CMD(0x266)
 #define DPNI_CMDID_GET_TX_CONFIRMATION_MODE	DPNI_CMD(0x26D)
+#define DPNI_CMDID_LOAD_SW_SEQUENCE		DPNI_CMD(0x270)
+#define DPNI_CMDID_ENABLE_SW_SEQUENCE		DPNI_CMD(0x271)
+#define DPNI_CMDID_GET_SW_SEQUENCE_LAYOUT	DPNI_CMD(0x272)
 #define DPNI_CMDID_SET_OPR			DPNI_CMD(0x26e)
 #define DPNI_CMDID_GET_OPR			DPNI_CMD(0x26f)
 #define DPNI_CMDID_SET_RX_FS_DIST		DPNI_CMD(0x273)
@@ -798,5 +801,43 @@ struct dpni_cmd_set_rx_hash_dist {
 	uint64_t	key_cfg_iova;
 };
 
+struct dpni_load_sw_sequence {
+	uint8_t dest;
+	uint8_t pad0[7];
+	uint16_t ss_offset;
+	uint16_t pad1;
+	uint16_t ss_size;
+	uint16_t pad2;
+	uint64_t ss_iova;
+};
+
+struct dpni_enable_sw_sequence {
+	uint8_t dest;
+	uint8_t pad0[7];
+	uint16_t ss_offset;
+	uint16_t hxs;
+	uint8_t set_start;
+	uint8_t pad1[3];
+	uint8_t param_offset;
+	uint8_t pad2[3];
+	uint8_t param_size;
+	uint8_t pad3[3];
+	uint64_t param_iova;
+};
+
+struct dpni_get_sw_sequence_layout {
+	uint8_t src;
+	uint8_t pad0[7];
+	uint64_t layout_iova;
+};
+
+struct dpni_sw_sequence_layout_entry {
+	uint16_t ss_offset;
+	uint16_t ss_size;
+	uint8_t param_offset;
+	uint8_t param_size;
+	uint16_t pad;
+};
+
 #pragma pack(pop)
 #endif /* _FSL_DPNI_CMD_H */
-- 
2.17.1