[dpdk-dev] [PATCH v4 18/34] net/bnxt: add helper functions for blob/regfile ops

[Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>]

From: Mike Baucom <michael.baucom@broadcom.com>

1. blob routines for managing key/mask/result data
2. regfile routines for managing temporal data during flow
   construction

Signed-off-by: Mike Baucom <michael.baucom@broadcom.com>
Signed-off-by: Kishore Padmanabha <kishore.padmanabha@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Lance Richardson <lance.richardson@broadcom.com>
Reviewed-by: Ajit Kumar Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/Makefile                 |   2 +
 drivers/net/bnxt/tf_ulp/ulp_template_db.h |  12 +
 drivers/net/bnxt/tf_ulp/ulp_utils.c       | 521 ++++++++++++++++++++++++++++++
 drivers/net/bnxt/tf_ulp/ulp_utils.h       | 279 ++++++++++++++++
 4 files changed, 814 insertions(+)
 create mode 100644 drivers/net/bnxt/tf_ulp/ulp_utils.c
 create mode 100644 drivers/net/bnxt/tf_ulp/ulp_utils.h

diff --git a/drivers/net/bnxt/Makefile b/drivers/net/bnxt/Makefile
index bb9b888..4e0dea1 100644
--- a/drivers/net/bnxt/Makefile
+++ b/drivers/net/bnxt/Makefile
@@ -61,6 +61,8 @@ SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += tf_ulp/bnxt_ulp.c
 SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += tf_ulp/ulp_mark_mgr.c
 SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += tf_ulp/ulp_flow_db.c
 SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += tf_ulp/ulp_template_db.c
+SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += tf_ulp/ulp_utils.c
+
 #
 # Export include files
 #
diff --git a/drivers/net/bnxt/tf_ulp/ulp_template_db.h b/drivers/net/bnxt/tf_ulp/ulp_template_db.h
index ba2a101..1eed828 100644
--- a/drivers/net/bnxt/tf_ulp/ulp_template_db.h
+++ b/drivers/net/bnxt/tf_ulp/ulp_template_db.h
@@ -27,6 +27,18 @@ enum bnxt_ulp_device_id {
 	BNXT_ULP_DEVICE_ID_LAST
 };
 
+enum bnxt_ulp_fmf_mask {
+	BNXT_ULP_FMF_MASK_IGNORE,
+	BNXT_ULP_FMF_MASK_ANY,
+	BNXT_ULP_FMF_MASK_EXACT,
+	BNXT_ULP_FMF_MASK_WILDCARD,
+	BNXT_ULP_FMF_MASK_LAST
+};
+
+enum bnxt_ulp_regfile_index {
+	BNXT_ULP_REGFILE_INDEX_LAST
+};
+
 enum bnxt_ulp_sym {
 	BNXT_ULP_SYM_LITTLE_ENDIAN = 1,
 	BNXT_ULP_SYM_YES = 1
diff --git a/drivers/net/bnxt/tf_ulp/ulp_utils.c b/drivers/net/bnxt/tf_ulp/ulp_utils.c
new file mode 100644
index 0000000..1d463cd
--- /dev/null
+++ b/drivers/net/bnxt/tf_ulp/ulp_utils.c
@@ -0,0 +1,521 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2014-2019 Broadcom
+ * All rights reserved.
+ */
+
+#include "ulp_utils.h"
+#include "bnxt_tf_common.h"
+
+/*
+ * Initialize the regfile structure for writing
+ *
+ * regfile [in] Ptr to a regfile instance
+ *
+ * returns 0 on error or 1 on success
+ */
+uint32_t
+ulp_regfile_init(struct ulp_regfile *regfile)
+{
+	/* validate the arguments */
+	if (!regfile) {
+		BNXT_TF_DBG(ERR, "invalid argument\n");
+		return 0; /* failure */
+	}
+	memset(regfile, 0, sizeof(struct ulp_regfile));
+	return 1; /* Success */
+}
+
+/*
+ * Read a value from the regfile
+ *
+ * regfile [in] The regfile instance. Must be initialized prior to being used
+ *
+ * field [in] The field to be read within the regfile.
+ *
+ * data [in/out]
+ *
+ * returns size, zero on failure
+ */
+uint32_t
+ulp_regfile_read(struct ulp_regfile *regfile,
+		 enum bnxt_ulp_regfile_index field,
+		 uint64_t *data)
+{
+	/* validate the arguments */
+	if (!regfile || field >= BNXT_ULP_REGFILE_INDEX_LAST) {
+		BNXT_TF_DBG(ERR, "invalid argument\n");
+		return 0; /* failure */
+	}
+
+	*data = regfile->entry[field].data;
+	return sizeof(*data);
+}
+
+/*
+ * Write a value to the regfile
+ *
+ * regfile [in] The regfile instance.  Must be initialized prior to being used
+ *
+ * field [in] The field to be written within the regfile.
+ *
+ * data [in] The value is written into this variable.  It is going to be in the
+ * same byte order as it was written.
+ *
+ * size [in] The size in bytes of the value beingritten into this
+ * variable.
+ *
+ * returns 0 on fail
+ */
+uint32_t
+ulp_regfile_write(struct ulp_regfile *regfile,
+		  enum bnxt_ulp_regfile_index field,
+		  uint64_t data)
+{
+	/* validate the arguments */
+	if (!regfile || field >= BNXT_ULP_REGFILE_INDEX_LAST) {
+		BNXT_TF_DBG(ERR, "invalid argument\n");
+		return 0; /* failure */
+	}
+
+	regfile->entry[field].data = data;
+	return sizeof(data); /* Success */
+}
+
+static void
+ulp_bs_put_msb(uint8_t *bs, uint16_t bitpos, uint8_t bitlen, uint8_t val)
+{
+	uint8_t bitoffs = bitpos % 8;
+	uint16_t index  = bitpos / 8;
+	uint8_t mask;
+	uint8_t tmp;
+	int8_t shift;
+
+	tmp = bs[index];
+	mask = ((uint8_t)-1 >> (8 - bitlen));
+	shift = 8 - bitoffs - bitlen;
+	val &= mask;
+
+	if (shift >= 0) {
+		tmp &= ~(mask << shift);
+		tmp |= val << shift;
+		bs[index] = tmp;
+	} else {
+		tmp &= ~((uint8_t)-1 >> bitoffs);
+		tmp |= val >> -shift;
+		bs[index++] = tmp;
+
+		tmp = bs[index];
+		tmp &= ((uint8_t)-1 >> (bitlen - (8 - bitoffs)));
+		tmp |= val << (8 + shift);
+		bs[index] = tmp;
+	}
+}
+
+static void
+ulp_bs_put_lsb(uint8_t *bs, uint16_t bitpos, uint8_t bitlen, uint8_t val)
+{
+	uint8_t bitoffs = bitpos % 8;
+	uint16_t index  = bitpos / 8;
+	uint8_t mask;
+	uint8_t tmp;
+	uint8_t shift;
+	uint8_t partial;
+
+	tmp = bs[index];
+	shift = bitoffs;
+
+	if (bitoffs + bitlen <= 8) {
+		mask = ((1 << bitlen) - 1) << shift;
+		tmp &= ~mask;
+		tmp |= ((val << shift) & mask);
+		bs[index] = tmp;
+	} else {
+		partial = 8 - bitoffs;
+		mask = ((1 << partial) - 1) << shift;
+		tmp &= ~mask;
+		tmp |= ((val << shift) & mask);
+		bs[index++] = tmp;
+
+		val >>= partial;
+		partial = bitlen - partial;
+		mask = ((1 << partial) - 1);
+		tmp = bs[index];
+		tmp &= ~mask;
+		tmp |= (val & mask);
+		bs[index] = tmp;
+	}
+}
+
+/* Assuming that val is in Big-Endian Format */
+static uint32_t
+ulp_bs_push_lsb(uint8_t *bs, uint16_t pos, uint8_t len, uint8_t *val)
+{
+	int i;
+	int cnt = (len) / 8;
+	int tlen = len;
+
+	if (cnt > 0 && !(len % 8))
+		cnt -= 1;
+
+	for (i = 0; i < cnt; i++) {
+		ulp_bs_put_lsb(bs, pos, 8, val[cnt - i]);
+		pos += 8;
+		tlen -= 8;
+	}
+
+	/* Handle the remainder bits */
+	if (tlen)
+		ulp_bs_put_lsb(bs, pos, tlen, val[0]);
+	return len;
+}
+
+/* Assuming that val is in Big-Endian Format */
+static uint32_t
+ulp_bs_push_msb(uint8_t *bs, uint16_t pos, uint8_t len, uint8_t *val)
+{
+	int i;
+	int cnt = (len + 7) / 8;
+	int tlen = len;
+
+	/* Handle any remainder bits */
+	int tmp = len % 8;
+
+	if (!tmp)
+		tmp = 8;
+
+	ulp_bs_put_msb(bs, pos, tmp, val[0]);
+
+	pos += tmp;
+	tlen -= tmp;
+
+	for (i = 1; i < cnt; i++) {
+		ulp_bs_put_msb(bs, pos, 8, val[i]);
+		pos += 8;
+		tlen -= 8;
+	}
+
+	return len;
+}
+
+/*
+ * Initializes the blob structure for creating binary blob
+ *
+ * blob [in] The blob to be initialized
+ *
+ * bitlen [in] The bit length of the blob
+ *
+ * order [in] The byte order for the blob.  Currently only supporting
+ * big endian.  All fields are packed with this order.
+ *
+ * returns 0 on error or 1 on success
+ */
+uint32_t
+ulp_blob_init(struct ulp_blob *blob,
+	      uint16_t bitlen,
+	      enum bnxt_ulp_byte_order order)
+{
+	/* validate the arguments */
+	if (!blob || bitlen > (8 * sizeof(blob->data))) {
+		BNXT_TF_DBG(ERR, "invalid argument\n");
+		return 0; /* failure */
+	}
+	blob->bitlen = bitlen;
+	blob->byte_order = order;
+	blob->write_idx = 0;
+	memset(blob->data, 0, sizeof(blob->data));
+	return 1; /* Success */
+}
+
+/*
+ * Add data to the binary blob at the current offset.
+ *
+ * blob [in] The blob that data is added to.  The blob must
+ * be initialized prior to pushing data.
+ *
+ * data [in] A pointer to bytes to be added to the blob.
+ *
+ * datalen [in] The number of bits to be added ot the blob.
+ *
+ * The offset of the data is updated after each push of data.
+ * NULL returned on error.
+ */
+#define ULP_BLOB_BYTE		8
+#define ULP_BLOB_BYTE_HEX	0xFF
+#define BLOB_MASK_CAL(x)	((0xFF << (x)) & 0xFF)
+uint32_t
+ulp_blob_push(struct ulp_blob *blob,
+	      uint8_t *data,
+	      uint32_t datalen)
+{
+	uint32_t rc;
+
+	/* validate the arguments */
+	if (!blob || datalen > (uint32_t)(blob->bitlen - blob->write_idx)) {
+		BNXT_TF_DBG(ERR, "invalid argument\n");
+		return 0; /* failure */
+	}
+
+	if (blob->byte_order == BNXT_ULP_BYTE_ORDER_BE)
+		rc = ulp_bs_push_msb(blob->data,
+				     blob->write_idx,
+				     datalen,
+				     data);
+	else
+		rc = ulp_bs_push_lsb(blob->data,
+				     blob->write_idx,
+				     datalen,
+				     data);
+	if (!rc) {
+		BNXT_TF_DBG(ERR, "Failed ro write blob\n");
+		return 0;
+	}
+	blob->write_idx += datalen;
+	return datalen;
+}
+
+/*
+ * Add data to the binary blob at the current offset.
+ *
+ * blob [in] The blob that data is added to.  The blob must
+ * be initialized prior to pushing data.
+ *
+ * data [in] 64-bit value to be added to the blob.
+ *
+ * datalen [in] The number of bits to be added ot the blob.
+ *
+ * The offset of the data is updated after each push of data.
+ * NULL returned on error, pointer pushed value otherwise.
+ */
+uint8_t *
+ulp_blob_push_64(struct ulp_blob *blob,
+		 uint64_t *data,
+		 uint32_t datalen)
+{
+	uint8_t *val = (uint8_t *)data;
+	int rc;
+
+	int size = (datalen + 7) / 8;
+
+	if (!blob || !data ||
+	    datalen > (uint32_t)(blob->bitlen - blob->write_idx)) {
+		BNXT_TF_DBG(ERR, "invalid argument\n");
+		return 0;
+	}
+
+	rc = ulp_blob_push(blob, &val[8 - size], datalen);
+	if (!rc)
+		return 0;
+
+	return &val[8 - size];
+}
+
+/*
+ * Add encap data to the binary blob at the current offset.
+ *
+ * blob [in] The blob that data is added to.  The blob must
+ * be initialized prior to pushing data.
+ *
+ * data [in] value to be added to the blob.
+ *
+ * datalen [in] The number of bits to be added ot the blob.
+ *
+ * The offset of the data is updated after each push of data.
+ * NULL returned on error, pointer pushed value otherwise.
+ */
+uint32_t
+ulp_blob_push_encap(struct ulp_blob *blob,
+		    uint8_t *data,
+		    uint32_t datalen)
+{
+	uint8_t		*val = (uint8_t *)data;
+	uint32_t	initial_size, write_size = datalen;
+	uint32_t	size = 0;
+
+	if (!blob || !data ||
+	    datalen > (uint32_t)(blob->bitlen - blob->write_idx)) {
+		BNXT_TF_DBG(ERR, "invalid argument\n");
+		return 0;
+	}
+
+	initial_size = ULP_BYTE_2_BITS(sizeof(uint64_t)) -
+	    (blob->write_idx % ULP_BYTE_2_BITS(sizeof(uint64_t)));
+	while (write_size > 0) {
+		if (initial_size && write_size > initial_size) {
+			size = initial_size;
+			initial_size = 0;
+		} else if (initial_size && write_size <= initial_size) {
+			size = write_size;
+			initial_size = 0;
+		} else if (write_size > ULP_BYTE_2_BITS(sizeof(uint64_t))) {
+			size = ULP_BYTE_2_BITS(sizeof(uint64_t));
+		} else {
+			size = write_size;
+		}
+		if (!ulp_blob_push(blob, val, size)) {
+			BNXT_TF_DBG(ERR, "push field failed\n");
+			return 0;
+		}
+		val += ULP_BITS_2_BYTE(size);
+		write_size -= size;
+	}
+	return datalen;
+}
+
+/*
+ * Adds pad to an initialized blob at the current offset
+ *
+ * blob [in] The blob that data is added to.  The blob must
+ * be initialized prior to pushing data.
+ *
+ * datalen [in] The number of bits of pad to add
+ *
+ * returns the number of pad bits added, zero on failure
+ */
+uint32_t
+ulp_blob_pad_push(struct ulp_blob *blob,
+		  uint32_t datalen)
+{
+	if (datalen > (uint32_t)(blob->bitlen - blob->write_idx)) {
+		BNXT_TF_DBG(ERR, "Pad too large for blob\n");
+		return 0;
+	}
+
+	blob->write_idx += datalen;
+	return datalen;
+}
+
+/*
+ * Get the data portion of the binary blob.
+ *
+ * blob [in] The blob's data to be retrieved. The blob must be
+ * initialized prior to pushing data.
+ *
+ * datalen [out] The number of bits to that are filled.
+ *
+ * returns a byte array of the blob data.  Returns NULL on error.
+ */
+uint8_t *
+ulp_blob_data_get(struct ulp_blob *blob,
+		  uint16_t *datalen)
+{
+	/* validate the arguments */
+	if (!blob) {
+		BNXT_TF_DBG(ERR, "invalid argument\n");
+		return NULL; /* failure */
+	}
+	*datalen = blob->write_idx;
+	return blob->data;
+}
+
+/*
+ * Set the encap swap start index of the binary blob.
+ *
+ * blob [in] The blob's data to be retrieved. The blob must be
+ * initialized prior to pushing data.
+ *
+ * returns void.
+ */
+void
+ulp_blob_encap_swap_idx_set(struct ulp_blob *blob)
+{
+	/* validate the arguments */
+	if (!blob) {
+		BNXT_TF_DBG(ERR, "invalid argument\n");
+		return; /* failure */
+	}
+	blob->encap_swap_idx = blob->write_idx;
+}
+
+/*
+ * Perform the encap buffer swap to 64 bit reversal.
+ *
+ * blob [in] The blob's data to be used for swap.
+ *
+ * returns void.
+ */
+void
+ulp_blob_perform_encap_swap(struct ulp_blob *blob)
+{
+	uint32_t		i, idx = 0, end_idx = 0;
+	uint8_t		temp_val_1, temp_val_2;
+
+	/* validate the arguments */
+	if (!blob) {
+		BNXT_TF_DBG(ERR, "invalid argument\n");
+		return; /* failure */
+	}
+	idx = ULP_BITS_2_BYTE_NR(blob->encap_swap_idx + 1);
+	end_idx = ULP_BITS_2_BYTE(blob->write_idx);
+
+	while (idx <= end_idx) {
+		for (i = 0; i < 4; i = i + 2) {
+			temp_val_1 = blob->data[idx + i];
+			temp_val_2 = blob->data[idx + i + 1];
+			blob->data[idx + i] = blob->data[idx + 6 - i];
+			blob->data[idx + i + 1] = blob->data[idx + 7 - i];
+			blob->data[idx + 7 - i] = temp_val_2;
+			blob->data[idx + 6 - i] = temp_val_1;
+		}
+		idx += 8;
+	}
+}
+
+/*
+ * Read data from the operand
+ *
+ * operand [in] A pointer to a 16 Byte operand
+ *
+ * val [in/out] The variable to copy the operand to
+ *
+ * bytes [in] The number of bytes to read into val
+ *
+ * returns number of bits read, zero on error
+ */
+uint16_t
+ulp_operand_read(uint8_t *operand,
+		 uint8_t *val,
+		 uint16_t bytes)
+{
+	/* validate the arguments */
+	if (!operand || !val) {
+		BNXT_TF_DBG(ERR, "invalid argument\n");
+		return 0; /* failure */
+	}
+	memcpy(val, operand, bytes);
+	return bytes;
+}
+
+/*
+ * copy the buffer in the encap format which is 2 bytes.
+ * The MSB of the src is placed at the LSB of dst.
+ *
+ * dst [out] The destination buffer
+ * src [in] The source buffer dst
+ * size[in] size of the buffer.
+ */
+void
+ulp_encap_buffer_copy(uint8_t *dst,
+		      const uint8_t *src,
+		      uint16_t size)
+{
+	uint16_t	idx = 0;
+
+	/* copy 2 bytes at a time. Write MSB to LSB */
+	while ((idx + sizeof(uint16_t)) <= size) {
+		memcpy(&dst[idx], &src[size - idx - sizeof(uint16_t)],
+		       sizeof(uint16_t));
+		idx += sizeof(uint16_t);
+	}
+}
+
+/*
+ * Check the buffer is empty
+ *
+ * buf [in] The buffer
+ * size [in] The size of the buffer
+ *
+ */
+int32_t ulp_buffer_is_empty(const uint8_t *buf, uint32_t size)
+{
+	return buf[0] == 0 && !memcmp(buf, buf + 1, size - 1);
+}
diff --git a/drivers/net/bnxt/tf_ulp/ulp_utils.h b/drivers/net/bnxt/tf_ulp/ulp_utils.h
new file mode 100644
index 0000000..db88546
--- /dev/null
+++ b/drivers/net/bnxt/tf_ulp/ulp_utils.h
@@ -0,0 +1,279 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2014-2019 Broadcom
+ * All rights reserved.
+ */
+
+#ifndef _ULP_UTILS_H_
+#define _ULP_UTILS_H_
+
+#include "bnxt.h"
+#include "ulp_template_db.h"
+
+/*
+ * Macros for bitmap sets and gets
+ * These macros can be used if the val are power of 2.
+ */
+#define ULP_BITMAP_SET(bitmap, val)	((bitmap) |= (val))
+#define ULP_BITMAP_RESET(bitmap, val)	((bitmap) &= ~(val))
+#define ULP_BITMAP_ISSET(bitmap, val)	((bitmap) & (val))
+#define ULP_BITSET_CMP(b1, b2)  memcmp(&(b1)->bits, \
+				&(b2)->bits, sizeof((b1)->bits))
+/*
+ * Macros for bitmap sets and gets
+ * These macros can be used if the val are not power of 2 and
+ * are simple index values.
+ */
+#define ULP_INDEX_BITMAP_SIZE	(sizeof(uint64_t) * 8)
+#define ULP_INDEX_BITMAP_CSET(i)	(1UL << \
+			((ULP_INDEX_BITMAP_SIZE - 1) - \
+			((i) % ULP_INDEX_BITMAP_SIZE)))
+
+#define ULP_INDEX_BITMAP_SET(b, i)	((b) |= \
+			(1UL << ((ULP_INDEX_BITMAP_SIZE - 1) - \
+			((i) % ULP_INDEX_BITMAP_SIZE))))
+
+#define ULP_INDEX_BITMAP_RESET(b, i)	((b) &= \
+			(~(1UL << ((ULP_INDEX_BITMAP_SIZE - 1) - \
+			((i) % ULP_INDEX_BITMAP_SIZE)))))
+
+#define ULP_INDEX_BITMAP_GET(b, i)		(((b) >> \
+			((ULP_INDEX_BITMAP_SIZE - 1) - \
+			((i) % ULP_INDEX_BITMAP_SIZE))) & 1)
+
+#define ULP_DEVICE_PARAMS_INDEX(tid, dev_id)	\
+	(((tid) << BNXT_ULP_LOG2_MAX_NUM_DEV) | (dev_id))
+
+/* Macro to convert bytes to bits */
+#define ULP_BYTE_2_BITS(byte_x)		((byte_x) * 8)
+/* Macro to convert bits to bytes */
+#define ULP_BITS_2_BYTE(bits_x)		(((bits_x) + 7) / 8)
+/* Macro to convert bits to bytes with no round off*/
+#define ULP_BITS_2_BYTE_NR(bits_x)	((bits_x) / 8)
+
+/*
+ * Making the blob statically sized to 128 bytes for now.
+ * The blob must be initialized with ulp_blob_init prior to using.
+ */
+#define BNXT_ULP_FLMP_BLOB_SIZE	(128)
+#define BNXT_ULP_FLMP_BLOB_SIZE_IN_BITS	ULP_BYTE_2_BITS(BNXT_ULP_FLMP_BLOB_SIZE)
+struct ulp_blob {
+	enum bnxt_ulp_byte_order	byte_order;
+	uint16_t			write_idx;
+	uint16_t			bitlen;
+	uint8_t				data[BNXT_ULP_FLMP_BLOB_SIZE];
+	uint16_t			encap_swap_idx;
+};
+
+/*
+ * The data can likely be only 32 bits for now.  Just size check
+ * the data when being written.
+ */
+#define ULP_REGFILE_ENTRY_SIZE	(sizeof(uint32_t))
+struct ulp_regfile_entry {
+	uint64_t	data;
+	uint32_t	size;
+};
+
+struct ulp_regfile {
+	struct ulp_regfile_entry entry[BNXT_ULP_REGFILE_INDEX_LAST];
+};
+
+/*
+ * Initialize the regfile structure for writing
+ *
+ * regfile [in] Ptr to a regfile instance
+ *
+ * returns 0 on error or 1 on success
+ */
+uint32_t
+ulp_regfile_init(struct ulp_regfile *regfile);
+
+/*
+ * Read a value from the regfile
+ *
+ * regfile [in] The regfile instance.  Must be initialized prior to being used
+ *
+ * field [in] The field to be read within the regfile.
+ *
+ * returns the byte array
+ */
+uint32_t
+ulp_regfile_read(struct ulp_regfile *regfile,
+		 enum bnxt_ulp_regfile_index field,
+		 uint64_t *data);
+
+/*
+ * Write a value to the regfile
+ *
+ * regfile [in] The regfile instance.  Must be initialized prior to being used
+ *
+ * field [in] The field to be written within the regfile.
+ *
+ * data [in] The value is written into this variable.  It is going to be in the
+ * same byte order as it was written.
+ *
+ * returns zero on error
+ */
+uint32_t
+ulp_regfile_write(struct ulp_regfile *regfile,
+		  enum bnxt_ulp_regfile_index field,
+		  uint64_t data);
+
+/*
+ * Initializes the blob structure for creating binary blob
+ *
+ * blob [in] The blob to be initialized
+ *
+ * bitlen [in] The bit length of the blob
+ *
+ * order [in] The byte order for the blob.  Currently only supporting
+ * big endian.  All fields are packed with this order.
+ *
+ * returns 0 on error or 1 on success
+ */
+uint32_t
+ulp_blob_init(struct ulp_blob *blob,
+	      uint16_t bitlen,
+	      enum bnxt_ulp_byte_order order);
+
+/*
+ * Add data to the binary blob at the current offset.
+ *
+ * blob [in] The blob that data is added to.  The blob must
+ * be initialized prior to pushing data.
+ *
+ * data [in] A pointer to bytes to be added to the blob.
+ *
+ * datalen [in] The number of bits to be added ot the blob.
+ *
+ * The offset of the data is updated after each push of data.
+ * NULL returned on error.
+ */
+uint32_t
+ulp_blob_push(struct ulp_blob *blob,
+	      uint8_t *data,
+	      uint32_t datalen);
+
+/*
+ * Add data to the binary blob at the current offset.
+ *
+ * blob [in] The blob that data is added to.  The blob must
+ * be initialized prior to pushing data.
+ *
+ * data [in] 64-bit value to be added to the blob.
+ *
+ * datalen [in] The number of bits to be added ot the blob.
+ *
+ * The offset of the data is updated after each push of data.
+ * NULL returned on error, ptr to pushed data otherwise
+ */
+uint8_t *
+ulp_blob_push_64(struct ulp_blob *blob,
+		 uint64_t *data,
+		 uint32_t datalen);
+
+/*
+ * Add encap data to the binary blob at the current offset.
+ *
+ * blob [in] The blob that data is added to.  The blob must
+ * be initialized prior to pushing data.
+ *
+ * data [in] value to be added to the blob.
+ *
+ * datalen [in] The number of bits to be added ot the blob.
+ *
+ * The offset of the data is updated after each push of data.
+ * NULL returned on error, pointer pushed value otherwise.
+ */
+uint32_t
+ulp_blob_push_encap(struct ulp_blob *blob,
+		    uint8_t *data,
+		    uint32_t datalen);
+
+/*
+ * Get the data portion of the binary blob.
+ *
+ * blob [in] The blob's data to be retrieved. The blob must be
+ * initialized prior to pushing data.
+ *
+ * datalen [out] The number of bits to that are filled.
+ *
+ * returns a byte array of the blob data.  Returns NULL on error.
+ */
+uint8_t *
+ulp_blob_data_get(struct ulp_blob *blob,
+		  uint16_t *datalen);
+
+/*
+ * Adds pad to an initialized blob at the current offset
+ *
+ * blob [in] The blob that data is added to.  The blob must
+ * be initialized prior to pushing data.
+ *
+ * datalen [in] The number of bits of pad to add
+ *
+ * returns the number of pad bits added, zero on failure
+ */
+uint32_t
+ulp_blob_pad_push(struct ulp_blob *blob,
+		  uint32_t datalen);
+
+/*
+ * Set the 64 bit swap start index of the binary blob.
+ *
+ * blob [in] The blob's data to be retrieved. The blob must be
+ * initialized prior to pushing data.
+ *
+ * returns void.
+ */
+void
+ulp_blob_encap_swap_idx_set(struct ulp_blob *blob);
+
+/*
+ * Perform the encap buffer swap to 64 bit reversal.
+ *
+ * blob [in] The blob's data to be used for swap.
+ *
+ * returns void.
+ */
+void
+ulp_blob_perform_encap_swap(struct ulp_blob *blob);
+
+/*
+ * Read data from the operand
+ *
+ * operand [in] A pointer to a 16 Byte operand
+ *
+ * val [in/out] The variable to copy the operand to
+ *
+ * bitlen [in] The number of bits to read into val
+ *
+ * returns number of bits read, zero on error
+ */
+uint16_t
+ulp_operand_read(uint8_t *operand,
+		 uint8_t *val,
+		 uint16_t bitlen);
+
+/*
+ * copy the buffer in the encap format which is 2 bytes.
+ * The MSB of the src is placed at the LSB of dst.
+ *
+ * dst [out] The destination buffer
+ * src [in] The source buffer dst
+ * size[in] size of the buffer.
+ */
+void
+ulp_encap_buffer_copy(uint8_t *dst,
+		      const uint8_t *src,
+		      uint16_t size);
+
+/*
+ * Check the buffer is empty
+ *
+ * buf [in] The buffer
+ * size [in] The size of the buffer
+ */
+int32_t ulp_buffer_is_empty(const uint8_t *buf, uint32_t size);
+
+#endif /* _ULP_UTILS_H_ */
-- 
2.7.4