[PATCH 4/4] [v1,4/4] zsda: add compressdev driver and interface

[Hanxiao Li <li.hanxiao@zte.com.cn>]

[-- Attachment #1.1.1: Type: text/plain, Size: 27130 bytes --]

Add zsda compressdev driver and enqueue, dequeue interface.

Signed-off-by: Hanxiao Li <li.hanxiao@zte.com.cn>
---
 drivers/common/zsda/meson.build       |  13 +
 drivers/compress/zsda/zsda_comp.c     | 334 +++++++++++++++++++
 drivers/compress/zsda/zsda_comp.h     |  28 ++
 drivers/compress/zsda/zsda_comp_pmd.c | 462 ++++++++++++++++++++++++++
 drivers/compress/zsda/zsda_comp_pmd.h |  40 +++
 5 files changed, 877 insertions(+)
 create mode 100644 drivers/compress/zsda/zsda_comp.c
 create mode 100644 drivers/compress/zsda/zsda_comp.h
 create mode 100644 drivers/compress/zsda/zsda_comp_pmd.c
 create mode 100644 drivers/compress/zsda/zsda_comp_pmd.h

diff --git a/drivers/common/zsda/meson.build b/drivers/common/zsda/meson.build
index ee7e9e1720..b12ef17476 100644
--- a/drivers/common/zsda/meson.build
+++ b/drivers/common/zsda/meson.build
@@ -10,3 +10,16 @@ sources += files(
 		'zsda_device.c',
 		'zsda_qp.c',
 		)
+
+zsda_compress = true
+zsda_compress_path = 'compress/zsda'
+zsda_compress_relpath = '../../' + zsda_compress_path
+includes += include_directories(zsda_compress_relpath)
+
+if zsda_compress
+zlib = dependency('zlib', required: false, method: 'pkg-config')
+	foreach f: ['zsda_comp_pmd.c', 'zsda_comp.c']
+		sources += files(join_paths(zsda_compress_relpath, f))
+	endforeach
+	ext_deps += zlib
+endif
diff --git a/drivers/compress/zsda/zsda_comp.c b/drivers/compress/zsda/zsda_comp.c
new file mode 100644
index 0000000000..d227d8c5cf
--- /dev/null
+++ b/drivers/compress/zsda/zsda_comp.c
@@ -0,0 +1,334 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 ZTE Corporation
+ */
+
+#include <rte_bus_pci.h>
+#include <rte_byteorder.h>
+#include <rte_common.h>
+#include <rte_comp.h>
+#include <rte_hexdump.h>
+#include <rte_log.h>
+#include <rte_malloc.h>
+#include <rte_mbuf.h>
+#include <rte_memcpy.h>
+#include <rte_mempool.h>
+#include <rte_memzone.h>
+#include <rte_spinlock.h>
+
+#include "zsda_comp.h"
+#include "zsda_logs.h"
+
+#include <zlib.h>
+
+#define ZLIB_HEADER_SIZE 2
+#define ZLIB_TRAILER_SIZE 4
+#define GZIP_HEADER_SIZE 10
+#define GZIP_TRAILER_SIZE 8
+#define CHECKSUM_SIZE 4
+
+static uint32_t zsda_read_chksum(uint8_t *data_addr, uint8_t op_code,
+					 uint32_t produced);
+
+int
+comp_match(void *op_in)
+{
+	const struct rte_comp_op *op = (struct rte_comp_op *)op_in;
+	const struct zsda_comp_xform *xform =
+		(struct zsda_comp_xform *)op->private_xform;
+
+	if (op->op_type != RTE_COMP_OP_STATELESS)
+		return 0;
+
+	if (xform->type != RTE_COMP_COMPRESS)
+		return 0;
+
+	return 1;
+}
+
+static uint8_t
+get_opcode(const struct zsda_comp_xform *xform)
+{
+	if (xform->type == RTE_COMP_COMPRESS) {
+		if (xform->checksum_type == RTE_COMP_CHECKSUM_NONE ||
+		    xform->checksum_type == RTE_COMP_CHECKSUM_CRC32)
+			return ZSDA_OPC_COMP_GZIP;
+		else if (xform->checksum_type == RTE_COMP_CHECKSUM_ADLER32)
+			return ZSDA_OPC_COMP_ZLIB;
+	}
+	if (xform->type == RTE_COMP_DECOMPRESS) {
+		if (xform->checksum_type == RTE_COMP_CHECKSUM_CRC32 ||
+		    xform->checksum_type == RTE_COMP_CHECKSUM_NONE)
+			return ZSDA_OPC_DECOMP_GZIP;
+		else if (xform->checksum_type == RTE_COMP_CHECKSUM_ADLER32)
+			return ZSDA_OPC_DECOMP_ZLIB;
+	}
+
+	return ZSDA_OPC_INVALID;
+}
+
+int
+build_comp_request(void *op_in, const struct zsda_queue *queue,
+		   void **op_cookies, uint16_t new_tail)
+{
+	uint8_t opcode = ZSDA_OPC_INVALID;
+	struct rte_comp_op *op = op_in;
+	struct zsda_comp_xform *xform =
+		(struct zsda_comp_xform *)op->private_xform;
+	struct zsda_wqe_comp *wqe =
+		(struct zsda_wqe_comp *)(queue->base_addr +
+					 (new_tail * queue->msg_size));
+
+	struct zsda_op_cookie *cookie =
+		(struct zsda_op_cookie *)op_cookies[new_tail];
+	int ret = 0;
+	uint32_t op_offset = 0;
+	uint32_t op_src_len = 0;
+	uint32_t op_dst_len = 0;
+	struct zsda_sgl *sgl_src = (struct zsda_sgl *)&cookie->sgl_src;
+	struct zsda_sgl *sgl_dst = (struct zsda_sgl *)&cookie->sgl_dst;
+	uint32_t head_len = 0;
+
+	if ((op->m_dst == NULL) || (op->m_dst == op->m_src)) {
+		ZSDA_LOG(ERR, "Failed! m_dst");
+		return -EINVAL;
+	}
+
+	opcode = get_opcode(xform);
+	if (opcode == ZSDA_OPC_INVALID) {
+		ZSDA_LOG(ERR, E_CONFIG);
+		return -EINVAL;
+	}
+
+	cookie->used = true;
+	cookie->sid = new_tail;
+	cookie->op = op;
+
+	if (opcode == ZSDA_OPC_COMP_GZIP)
+		head_len = GZIP_HEADER_SIZE;
+	else if (opcode == ZSDA_OPC_COMP_ZLIB)
+		head_len = ZLIB_HEADER_SIZE;
+	else {
+		ZSDA_LOG(ERR, "Comp, op_code error!");
+		return -EINVAL;
+	}
+	op_src_len += head_len;
+
+	struct comp_head_info comp_head_info;
+	comp_head_info.head_len = head_len;
+	comp_head_info.head_phys_addr = cookie->comp_head_phys_addr;
+
+	op_offset = op->src.offset;
+	op_src_len = op->src.length;
+	ret = zsda_fill_sgl(op->m_src, op_offset, sgl_src,
+				   cookie->sgl_src_phys_addr, op_src_len, NULL);
+
+	op_offset = op->dst.offset;
+	op_dst_len = op->m_dst->pkt_len - op_offset;
+	op_dst_len += head_len;
+	ret = zsda_fill_sgl(op->m_dst, op_offset, sgl_dst,
+					cookie->sgl_dst_phys_addr, op_dst_len,
+					&comp_head_info);
+
+	if (ret) {
+		ZSDA_LOG(ERR, E_FUNC);
+		return ret;
+	}
+
+	memset(wqe, 0, sizeof(struct zsda_wqe_comp));
+	wqe->rx_length = op_src_len;
+	wqe->tx_length = op_dst_len;
+	wqe->valid = queue->valid;
+	wqe->op_code = opcode;
+	wqe->sid = cookie->sid;
+	wqe->rx_sgl_type = SGL_ELM_TYPE_LIST;
+	wqe->tx_sgl_type = SGL_ELM_TYPE_LIST;
+
+	wqe->rx_addr = cookie->sgl_src_phys_addr;
+	wqe->tx_addr = cookie->sgl_dst_phys_addr;
+
+	return ret;
+}
+
+int
+decomp_match(void *op_in)
+{
+	const struct rte_comp_op *op = (struct rte_comp_op *)op_in;
+	const struct zsda_comp_xform *xform =
+		(struct zsda_comp_xform *)op->private_xform;
+
+	if (op->op_type != RTE_COMP_OP_STATELESS)
+		return 0;
+
+	if (xform->type != RTE_COMP_DECOMPRESS)
+		return 0;
+	return 1;
+}
+
+int
+build_decomp_request(void *op_in, const struct zsda_queue *queue,
+		     void **op_cookies, uint16_t new_tail)
+{
+	uint8_t opcode = ZSDA_OPC_INVALID;
+	struct rte_comp_op *op = op_in;
+	struct zsda_comp_xform *xform =
+		(struct zsda_comp_xform *)op->private_xform;
+
+	struct zsda_wqe_comp *wqe =
+		(struct zsda_wqe_comp *)(queue->base_addr +
+					 (new_tail * queue->msg_size));
+	struct zsda_op_cookie *cookie =
+		(struct zsda_op_cookie *)op_cookies[new_tail];
+	struct zsda_sgl *sgl_src = (struct zsda_sgl *)&cookie->sgl_src;
+	struct zsda_sgl *sgl_dst = (struct zsda_sgl *)&cookie->sgl_dst;
+	int ret = 0;
+
+	uint32_t op_offset = 0;
+	uint32_t op_src_len = 0;
+	uint32_t op_dst_len = 0;
+
+	uint8_t *head_data = NULL;
+	uint16_t head_len = 0;
+	struct comp_head_info comp_head_info;
+	uint8_t head_zlib[ZLIB_HEADER_SIZE] = {0x78, 0xDA};
+	uint8_t head_gzip[GZIP_HEADER_SIZE] = {0x1F, 0x8B, 0x08, 0x00, 0x00,
+					       0x00, 0x00, 0x00, 0x00, 0x03};
+
+	if ((op->m_dst == NULL) || (op->m_dst == op->m_src)) {
+		ZSDA_LOG(ERR, "Failed! m_dst");
+		return -EINVAL;
+	}
+
+	opcode = get_opcode(xform);
+	if (opcode == ZSDA_OPC_INVALID) {
+		ZSDA_LOG(ERR, E_CONFIG);
+		return -EINVAL;
+	}
+
+	cookie->used = true;
+	cookie->sid = new_tail;
+	cookie->op = op;
+
+	if (opcode == ZSDA_OPC_DECOMP_GZIP) {
+		head_data = head_gzip;
+		head_len = GZIP_HEADER_SIZE;
+	} else if (opcode == ZSDA_OPC_DECOMP_ZLIB) {
+		head_data = head_zlib;
+		head_len = ZLIB_HEADER_SIZE;
+	} else {
+		ZSDA_LOG(ERR, "Comp, op_code error!");
+		return -EINVAL;
+	}
+
+	op_offset = op->src.offset;
+	op_src_len = op->src.length;
+	op_src_len += head_len;
+	comp_head_info.head_len = head_len;
+	comp_head_info.head_phys_addr = cookie->comp_head_phys_addr;
+	cookie->decomp_no_tail = true;
+	for (int i = 0; i < head_len; i++)
+		cookie->comp_head[i] = head_data[i];
+
+	ret = zsda_fill_sgl(op->m_src, op_offset, sgl_src,
+			    cookie->sgl_src_phys_addr, op_src_len,
+			    &comp_head_info);
+
+	op_offset = op->dst.offset;
+	op_dst_len = op->m_dst->pkt_len - op_offset;
+	ret |= zsda_fill_sgl(op->m_dst, op_offset, sgl_dst,
+			     cookie->sgl_dst_phys_addr, op_dst_len, NULL);
+
+	if (ret) {
+		ZSDA_LOG(ERR, E_FUNC);
+		return ret;
+	}
+
+	memset(wqe, 0, sizeof(struct zsda_wqe_comp));
+
+	wqe->rx_length = op_src_len;
+	wqe->tx_length = op_dst_len;
+	wqe->valid = queue->valid;
+	wqe->op_code = opcode;
+	wqe->sid = cookie->sid;
+	wqe->rx_sgl_type = SGL_ELM_TYPE_LIST;
+	wqe->tx_sgl_type = SGL_ELM_TYPE_LIST;
+	wqe->rx_addr = cookie->sgl_src_phys_addr;
+	wqe->tx_addr = cookie->sgl_dst_phys_addr;
+
+	return ret;
+}
+
+void
+comp_callbak(void *cookie_in, struct zsda_cqe *cqe)
+{
+	struct zsda_op_cookie *tmp_cookie = (struct zsda_op_cookie *)cookie_in;
+	struct rte_comp_op *tmp_op = (struct rte_comp_op *)tmp_cookie->op;
+	uint8_t *data_addr =
+		(uint8_t *)tmp_op->m_dst->buf_addr + tmp_op->m_dst->data_off;
+	uint32_t chksum = 0;
+	uint16_t head_len = 0;
+	uint16_t tail_len = 0;
+
+	if (!(CQE_ERR0(cqe->err0) || CQE_ERR1(cqe->err1)))
+		tmp_op->status = RTE_COMP_OP_STATUS_SUCCESS;
+	else {
+		tmp_op->status = RTE_COMP_OP_STATUS_ERROR;
+		return;
+	}
+
+	/* handle chksum */
+	tmp_op->produced = cqe->tx_real_length;
+	if (cqe->op_code == ZSDA_OPC_COMP_ZLIB) {
+		head_len = ZLIB_HEADER_SIZE;
+		tail_len = ZLIB_TRAILER_SIZE;
+		chksum = zsda_read_chksum(data_addr, cqe->op_code,
+						  tmp_op->produced - head_len);
+	}
+	if (cqe->op_code == ZSDA_OPC_COMP_GZIP) {
+		head_len = GZIP_HEADER_SIZE;
+		tail_len = GZIP_TRAILER_SIZE;
+		chksum = zsda_read_chksum(data_addr, cqe->op_code,
+						  tmp_op->produced - head_len);
+	} else if (cqe->op_code == ZSDA_OPC_DECOMP_ZLIB) {
+		head_len = ZLIB_HEADER_SIZE;
+		tail_len = ZLIB_TRAILER_SIZE;
+		chksum = adler32(0, Z_NULL, 0);
+		chksum = adler32(chksum, data_addr, tmp_op->produced);
+	} else if (cqe->op_code == ZSDA_OPC_DECOMP_GZIP) {
+		head_len = GZIP_HEADER_SIZE;
+		tail_len = GZIP_TRAILER_SIZE;
+		chksum = crc32(0, Z_NULL, 0);
+		chksum = crc32(chksum, data_addr, tmp_op->produced);
+	}
+	tmp_op->output_chksum = chksum;
+
+	if (cqe->op_code == ZSDA_OPC_COMP_ZLIB ||
+	    cqe->op_code == ZSDA_OPC_COMP_GZIP) {
+		/* remove tail data*/
+		rte_pktmbuf_trim(tmp_op->m_dst, GZIP_TRAILER_SIZE);
+		/* remove head and tail length */
+		tmp_op->produced = tmp_op->produced - (head_len + tail_len);
+	}
+
+}
+
+static uint32_t
+zsda_read_chksum(uint8_t *data_addr, uint8_t op_code, uint32_t produced)
+{
+	uint8_t *chk_addr;
+	uint32_t chksum = 0;
+	int i = 0;
+
+	if (op_code == ZSDA_OPC_COMP_ZLIB) {
+		chk_addr = data_addr + produced - ZLIB_TRAILER_SIZE;
+		for (i = 0; i < CHECKSUM_SIZE; i++) {
+			chksum = chksum << 8;
+			chksum |= (*(chk_addr + i));
+		}
+	} else if (op_code == ZSDA_OPC_COMP_GZIP) {
+		chk_addr = data_addr + produced - GZIP_TRAILER_SIZE;
+		for (i = 0; i < CHECKSUM_SIZE; i++)
+			chksum |= (*(chk_addr + i) << (i * 8));
+	}
+
+	return chksum;
+}
diff --git a/drivers/compress/zsda/zsda_comp.h b/drivers/compress/zsda/zsda_comp.h
new file mode 100644
index 0000000000..cd78ded911
--- /dev/null
+++ b/drivers/compress/zsda/zsda_comp.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 ZTE Corporation
+ */
+
+#ifndef _ZSDA_COMP_H_
+#define _ZSDA_COMP_H_
+
+#include <rte_compressdev.h>
+#include <rte_compressdev_pmd.h>
+
+#include "zsda_common.h"
+#include "zsda_device.h"
+#include "zsda_qp.h"
+
+struct zsda_comp_xform {
+	enum rte_comp_xform_type type;
+	enum rte_comp_checksum_type checksum_type;
+};
+
+int comp_match(void *op_in);
+int build_comp_request(void *op_in, const struct zsda_queue *queue,
+		       void **op_cookies, uint16_t new_tail);
+int decomp_match(void *op_in);
+int build_decomp_request(void *op_in, const struct zsda_queue *queue,
+			 void **op_cookies, uint16_t new_tail);
+void comp_callbak(void *op, struct zsda_cqe *cqe);
+
+#endif
diff --git a/drivers/compress/zsda/zsda_comp_pmd.c b/drivers/compress/zsda/zsda_comp_pmd.c
new file mode 100644
index 0000000000..bc14ee7931
--- /dev/null
+++ b/drivers/compress/zsda/zsda_comp_pmd.c
@@ -0,0 +1,462 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 ZTE Corporation
+ */
+
+#include <rte_malloc.h>
+
+#include "zsda_comp.h"
+#include "zsda_comp_pmd.h"
+
+static const struct rte_compressdev_capabilities zsda_comp_capabilities[] = {
+	{
+		.algo = RTE_COMP_ALGO_DEFLATE,
+		.comp_feature_flags = RTE_COMP_FF_HUFFMAN_DYNAMIC |
+							RTE_COMP_FF_OOP_SGL_IN_SGL_OUT |
+							RTE_COMP_FF_OOP_SGL_IN_LB_OUT |
+							RTE_COMP_FF_OOP_LB_IN_SGL_OUT |
+							RTE_COMP_FF_CRC32_CHECKSUM |
+							RTE_COMP_FF_ADLER32_CHECKSUM,
+		.window_size = {.min = 15, .max = 15, .increment = 0},
+	},
+	{
+		RTE_COMP_ALGO_LIST_END,
+		0,
+		{0, 0, 0},
+	},
+};
+
+static void
+zsda_comp_stats_get(struct rte_compressdev *dev,
+		    struct rte_compressdev_stats *stats)
+{
+	struct zsda_common_stat comm = {0};
+
+	zsda_stats_get(dev->data->queue_pairs, dev->data->nb_queue_pairs,
+		       &comm);
+	stats->enqueued_count = comm.enqueued_count;
+	stats->dequeued_count = comm.dequeued_count;
+	stats->enqueue_err_count = comm.enqueue_err_count;
+	stats->dequeue_err_count = comm.dequeue_err_count;
+}
+
+static void
+zsda_comp_stats_reset(struct rte_compressdev *dev)
+{
+	zsda_stats_reset(dev->data->queue_pairs, dev->data->nb_queue_pairs);
+}
+
+static int
+zsda_comp_qp_release(struct rte_compressdev *dev, uint16_t queue_pair_id)
+{
+	return zsda_queue_pair_release(
+		(struct zsda_qp **)&(dev->data->queue_pairs[queue_pair_id]));
+}
+
+
+static int
+setup_comp_queue(struct zsda_pci_device *zsda_pci_dev, uint16_t qp_id,
+		 struct zsda_qp *qp, uint32_t nb_des, int socket_id)
+{
+	enum zsda_service_type type = ZSDA_SERVICE_COMPRESSION;
+	struct zsda_qp_config conf;
+	int ret = 0;
+	struct zsda_qp_hw *qp_hw = NULL;
+
+	qp_hw = zsda_qps_hw_per_service(zsda_pci_dev, type);
+	conf.hw = qp_hw->data + qp_id;
+	conf.service_type = type;
+	conf.cookie_size = sizeof(struct zsda_op_cookie);
+	conf.nb_descriptors = nb_des;
+	conf.socket_id = socket_id;
+	conf.service_str = "comp";
+
+	ret = common_setup_qp(zsda_pci_dev->zsda_dev_id, &qp, qp_id, &conf);
+	qp->srv[type].rx_cb = comp_callbak;
+	qp->srv[type].tx_cb = build_comp_request;
+	qp->srv[type].match = comp_match;
+
+	return ret;
+}
+
+static int
+setup_decomp_queue(struct zsda_pci_device *zsda_pci_dev, uint16_t qp_id,
+		   struct zsda_qp *qp, uint32_t nb_des, int socket_id)
+{
+	enum zsda_service_type type = ZSDA_SERVICE_DECOMPRESSION;
+	struct zsda_qp_config conf;
+	int ret = 0;
+	struct zsda_qp_hw *qp_hw = NULL;
+
+	qp_hw = zsda_qps_hw_per_service(zsda_pci_dev, type);
+	conf.hw = qp_hw->data + qp_id;
+	conf.service_type = type;
+	conf.cookie_size = sizeof(struct zsda_op_cookie);
+	conf.nb_descriptors = nb_des;
+	conf.socket_id = socket_id;
+	conf.service_str = "decomp";
+
+	ret = common_setup_qp(zsda_pci_dev->zsda_dev_id, &qp, qp_id, &conf);
+	qp->srv[type].rx_cb = comp_callbak;
+	qp->srv[type].tx_cb = build_decomp_request;
+	qp->srv[type].match = decomp_match;
+
+	return ret;
+}
+
+static int
+zsda_comp_qp_setup(struct rte_compressdev *dev, uint16_t qp_id,
+		   uint32_t max_inflight_ops, int socket_id)
+{
+	int ret = 0;
+	struct zsda_qp *qp_new;
+
+	struct zsda_qp **qp_addr =
+		(struct zsda_qp **)&(dev->data->queue_pairs[qp_id]);
+	struct zsda_comp_dev_private *comp_priv = dev->data->dev_private;
+	struct zsda_pci_device *zsda_pci_dev = comp_priv->zsda_pci_dev;
+	uint16_t num_qps_comp =
+		zsda_qps_per_service(zsda_pci_dev, ZSDA_SERVICE_COMPRESSION);
+	uint16_t num_qps_decomp =
+		zsda_qps_per_service(zsda_pci_dev, ZSDA_SERVICE_DECOMPRESSION);
+	uint32_t nb_des = max_inflight_ops;
+
+	nb_des = (nb_des == NB_DES) ? nb_des : NB_DES;
+
+	if (*qp_addr != NULL) {
+		ret = zsda_comp_qp_release(dev, qp_id);
+		if (ret)
+			return ret;
+	}
+
+	qp_new = rte_zmalloc_socket("zsda PMD qp metadata", sizeof(*qp_new),
+				    RTE_CACHE_LINE_SIZE, socket_id);
+	if (qp_new == NULL) {
+		ZSDA_LOG(ERR, E_MALLOC);
+		return -ENOMEM;
+	}
+
+	if (num_qps_comp == MAX_QPS_ON_FUNCTION)
+		ret |= setup_comp_queue(zsda_pci_dev, qp_id, qp_new, nb_des,
+					socket_id);
+	else if (num_qps_decomp == MAX_QPS_ON_FUNCTION)
+		ret |= setup_decomp_queue(zsda_pci_dev, qp_id, qp_new, nb_des,
+					  socket_id);
+	else {
+		ret |= setup_comp_queue(zsda_pci_dev, qp_id, qp_new, nb_des,
+					socket_id);
+		ret |= setup_decomp_queue(zsda_pci_dev, qp_id, qp_new, nb_des,
+					  socket_id);
+	}
+
+	if (ret) {
+		rte_free(qp_new);
+		return ret;
+	}
+
+	qp_new->mmap_bar_addr =
+		comp_priv->zsda_pci_dev->pci_dev->mem_resource[0].addr;
+	*qp_addr = qp_new;
+
+	return ret;
+}
+
+static int
+zsda_comp_xform_size(void)
+{
+	return RTE_ALIGN_CEIL(sizeof(struct zsda_comp_xform), 8);
+}
+
+static struct rte_mempool *
+zsda_comp_create_xform_pool(struct zsda_comp_dev_private *comp_dev,
+			    struct rte_compressdev_config *config,
+			    uint32_t num_elements)
+{
+	char xform_pool_name[RTE_MEMPOOL_NAMESIZE];
+	struct rte_mempool *mp;
+
+	snprintf(xform_pool_name, RTE_MEMPOOL_NAMESIZE, "%s_xforms",
+		 comp_dev->zsda_pci_dev->name);
+
+	ZSDA_LOG(DEBUG, "xformpool: %s", xform_pool_name);
+	mp = rte_mempool_lookup(xform_pool_name);
+
+	if (mp != NULL) {
+		ZSDA_LOG(DEBUG, "xformpool already created");
+		if (mp->size != num_elements) {
+			ZSDA_LOG(DEBUG, "xformpool wrong size - delete it");
+			rte_mempool_free(mp);
+			mp = NULL;
+			comp_dev->xformpool = NULL;
+		}
+	}
+
+	if (mp == NULL)
+		mp = rte_mempool_create(xform_pool_name, num_elements,
+					zsda_comp_xform_size(), 0, 0, NULL,
+					NULL, NULL, NULL, config->socket_id, 0);
+	if (mp == NULL) {
+		ZSDA_LOG(ERR, E_CREATE);
+		return NULL;
+	}
+
+	return mp;
+}
+
+static int
+zsda_comp_private_xform_create(struct rte_compressdev *dev,
+			       const struct rte_comp_xform *xform,
+			       void **private_xform)
+{
+	struct zsda_comp_dev_private *zsda = dev->data->dev_private;
+
+	if (unlikely(private_xform == NULL)) {
+		ZSDA_LOG(ERR, E_NULL);
+		return -EINVAL;
+	}
+	if (unlikely(zsda->xformpool == NULL)) {
+		ZSDA_LOG(ERR, E_NULL);
+		return -ENOMEM;
+	}
+	if (rte_mempool_get(zsda->xformpool, private_xform)) {
+		ZSDA_LOG(ERR, E_NULL);
+		return -ENOMEM;
+	}
+
+	struct zsda_comp_xform *zsda_xform =
+		(struct zsda_comp_xform *)*private_xform;
+	zsda_xform->type = xform->type;
+
+	if (zsda_xform->type == RTE_COMP_COMPRESS)
+		zsda_xform->checksum_type = xform->compress.chksum;
+	else
+		zsda_xform->checksum_type = xform->decompress.chksum;
+
+	if (zsda_xform->checksum_type == RTE_COMP_CHECKSUM_CRC32_ADLER32)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int
+zsda_comp_private_xform_free(struct rte_compressdev *dev __rte_unused,
+			     void *private_xform)
+{
+	struct zsda_comp_xform *zsda_xform =
+		(struct zsda_comp_xform *)private_xform;
+
+	if (zsda_xform) {
+		memset(zsda_xform, 0, zsda_comp_xform_size());
+		struct rte_mempool *mp = rte_mempool_from_obj(zsda_xform);
+
+		rte_mempool_put(mp, zsda_xform);
+		return 0;
+	}
+	return -EINVAL;
+}
+
+static int
+zsda_comp_dev_close(struct rte_compressdev *dev)
+{
+	int ret = 0;
+	uint16_t i = 0;
+	struct zsda_comp_dev_private *comp_dev = dev->data->dev_private;
+
+	for (i = 0; i < dev->data->nb_queue_pairs; i++) {
+		ret = zsda_comp_qp_release(dev, i);
+		if (ret)
+			return ret;
+	}
+
+	rte_mempool_free(comp_dev->xformpool);
+	comp_dev->xformpool = NULL;
+
+	return ret;
+}
+
+static int
+zsda_comp_dev_config(struct rte_compressdev *dev,
+		     struct rte_compressdev_config *config)
+{
+	struct zsda_comp_dev_private *comp_dev = dev->data->dev_private;
+
+	if (config->max_nb_priv_xforms) {
+		comp_dev->xformpool = zsda_comp_create_xform_pool(
+			comp_dev, config, config->max_nb_priv_xforms);
+		if (comp_dev->xformpool == NULL)
+			return -ENOMEM;
+	} else
+		comp_dev->xformpool = NULL;
+
+	return 0;
+}
+
+static int
+zsda_comp_dev_start(struct rte_compressdev *dev)
+{
+	struct zsda_comp_dev_private *comp_dev = dev->data->dev_private;
+	int ret = 0;
+
+	ret = zsda_queue_start(comp_dev->zsda_pci_dev->pci_dev);
+
+	if (ret)
+		ZSDA_LOG(ERR, E_START_Q);
+
+	return ret;
+}
+
+static void
+zsda_comp_dev_stop(struct rte_compressdev *dev)
+{
+	struct zsda_comp_dev_private *comp_dev = dev->data->dev_private;
+
+	zsda_queue_stop(comp_dev->zsda_pci_dev->pci_dev);
+}
+
+static void
+zsda_comp_dev_info_get(struct rte_compressdev *dev,
+		       struct rte_compressdev_info *info)
+{
+	struct zsda_comp_dev_private *comp_dev = dev->data->dev_private;
+
+	if (info != NULL) {
+		info->max_nb_queue_pairs =
+			zsda_comp_max_nb_qps(comp_dev->zsda_pci_dev);
+		info->feature_flags = dev->feature_flags;
+		info->capabilities = comp_dev->zsda_dev_capabilities;
+	}
+}
+
+static uint16_t
+zsda_comp_pmd_enqueue_op_burst(void *qp, struct rte_comp_op **ops,
+			       uint16_t nb_ops)
+{
+	return zsda_enqueue_op_burst((struct zsda_qp *)qp, (void **)ops,
+				     nb_ops);
+}
+
+static uint16_t
+zsda_comp_pmd_dequeue_op_burst(void *qp, struct rte_comp_op **ops,
+			       uint16_t nb_ops)
+{
+	return zsda_dequeue_op_burst((struct zsda_qp *)qp, (void **)ops,
+				     nb_ops);
+}
+
+static struct rte_compressdev_ops compress_zsda_ops = {
+
+	.dev_configure = zsda_comp_dev_config,
+	.dev_start = zsda_comp_dev_start,
+	.dev_stop = zsda_comp_dev_stop,
+	.dev_close = zsda_comp_dev_close,
+	.dev_infos_get = zsda_comp_dev_info_get,
+
+	.stats_get = zsda_comp_stats_get,
+	.stats_reset = zsda_comp_stats_reset,
+	.queue_pair_setup = zsda_comp_qp_setup,
+	.queue_pair_release = zsda_comp_qp_release,
+
+	.private_xform_create = zsda_comp_private_xform_create,
+	.private_xform_free = zsda_comp_private_xform_free};
+
+/* An rte_driver is needed in the registration of the device with compressdev.
+ * The actual zsda pci's rte_driver can't be used as its name represents
+ * the whole pci device with all services. Think of this as a holder for a name
+ * for the compression part of the pci device.
+ */
+static const char zsda_comp_drv_name[] = RTE_STR(COMPRESSDEV_NAME_ZSDA_PMD);
+static const struct rte_driver compdev_zsda_driver = {
+	.name = zsda_comp_drv_name, .alias = zsda_comp_drv_name};
+
+int
+zsda_comp_dev_create(struct zsda_pci_device *zsda_pci_dev)
+{
+	struct zsda_device_info *dev_info =
+		&zsda_devs[zsda_pci_dev->zsda_dev_id];
+
+	struct rte_compressdev_pmd_init_params init_params = {
+		.name = "",
+		.socket_id = (int)rte_socket_id(),
+	};
+
+	char name[RTE_COMPRESSDEV_NAME_MAX_LEN];
+	char capa_memz_name[RTE_COMPRESSDEV_NAME_MAX_LEN];
+	struct rte_compressdev *compressdev;
+	struct zsda_comp_dev_private *comp_dev;
+	const struct rte_compressdev_capabilities *capabilities;
+	uint64_t capa_size = sizeof(struct rte_compressdev_capabilities);
+
+	snprintf(name, RTE_COMPRESSDEV_NAME_MAX_LEN, "%s_%s",
+		 zsda_pci_dev->name, "comp");
+
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	dev_info->comp_rte_dev.driver = &compdev_zsda_driver;
+	dev_info->comp_rte_dev.numa_node = dev_info->pci_dev->device.numa_node;
+	dev_info->comp_rte_dev.devargs = NULL;
+
+	compressdev = rte_compressdev_pmd_create(
+		name, &(dev_info->comp_rte_dev),
+		sizeof(struct zsda_comp_dev_private), &init_params);
+
+	if (compressdev == NULL)
+		return -ENODEV;
+
+	compressdev->dev_ops = &compress_zsda_ops;
+
+	compressdev->enqueue_burst = zsda_comp_pmd_enqueue_op_burst;
+	compressdev->dequeue_burst = zsda_comp_pmd_dequeue_op_burst;
+
+	compressdev->feature_flags = RTE_COMPDEV_FF_HW_ACCELERATED;
+
+	snprintf(capa_memz_name, RTE_COMPRESSDEV_NAME_MAX_LEN,
+		 "ZSDA_COMP_CAPA");
+
+	comp_dev = compressdev->data->dev_private;
+	comp_dev->zsda_pci_dev = zsda_pci_dev;
+	comp_dev->compressdev = compressdev;
+	capabilities = zsda_comp_capabilities;
+
+	comp_dev->capa_mz = rte_memzone_lookup(capa_memz_name);
+	if (comp_dev->capa_mz == NULL) {
+		comp_dev->capa_mz = rte_memzone_reserve(
+			capa_memz_name, capa_size, rte_socket_id(), 0);
+	}
+	if (comp_dev->capa_mz == NULL) {
+		ZSDA_LOG(DEBUG, E_MALLOC);
+		memset(&dev_info->comp_rte_dev, 0,
+		       sizeof(dev_info->comp_rte_dev));
+		rte_compressdev_pmd_destroy(compressdev);
+		return -EFAULT;
+	}
+
+	memcpy(comp_dev->capa_mz->addr, capabilities, capa_size);
+	comp_dev->zsda_dev_capabilities = comp_dev->capa_mz->addr;
+
+	zsda_pci_dev->comp_dev = comp_dev;
+
+	return 0;
+}
+
+int
+zsda_comp_dev_destroy(struct zsda_pci_device *zsda_pci_dev)
+{
+	struct zsda_comp_dev_private *comp_dev;
+
+	if (zsda_pci_dev == NULL)
+		return -ENODEV;
+
+	comp_dev = zsda_pci_dev->comp_dev;
+	if (comp_dev == NULL)
+		return 0;
+
+	if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+		rte_memzone_free(zsda_pci_dev->comp_dev->capa_mz);
+
+	zsda_comp_dev_close(comp_dev->compressdev);
+
+	rte_compressdev_pmd_destroy(comp_dev->compressdev);
+	zsda_pci_dev->comp_dev = NULL;
+
+	return 0;
+}
diff --git a/drivers/compress/zsda/zsda_comp_pmd.h b/drivers/compress/zsda/zsda_comp_pmd.h
new file mode 100644
index 0000000000..470675501b
--- /dev/null
+++ b/drivers/compress/zsda/zsda_comp_pmd.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 ZTE Corporation
+ */
+
+#ifndef _ZSDA_COMP_PMD_H_
+#define _ZSDA_COMP_PMD_H_
+
+#include <rte_compressdev.h>
+#include <rte_compressdev_pmd.h>
+
+/**< ZSDA Compression PMD driver name */
+#define COMPRESSDEV_NAME_ZSDA_PMD compress_zsda
+
+/** private data structure for a ZSDA compression device.
+ * This ZSDA device is a device offering only a compression service,
+ * there can be one of these on each zsda_pci_device (VF).
+ */
+struct zsda_comp_dev_private {
+	struct zsda_pci_device *zsda_pci_dev;
+	/**< The zsda pci device hosting the service */
+	struct rte_compressdev *compressdev;
+	/**< The pointer to this compression device structure */
+	const struct rte_compressdev_capabilities *zsda_dev_capabilities;
+	/* ZSDA device compression capabilities */
+	const struct rte_memzone *interm_buff_mz;
+	/**< The device's memory for intermediate buffers */
+	struct rte_mempool *xformpool;
+	/**< The device's pool for zsda_comp_xforms */
+	struct rte_mempool *streampool;
+	/**< The device's pool for zsda_comp_streams */
+	const struct rte_memzone *capa_mz;
+	/* Shared memzone for storing capabilities */
+	uint16_t min_enq_burst_threshold;
+};
+
+int zsda_comp_dev_create(struct zsda_pci_device *zsda_pci_dev);
+
+int zsda_comp_dev_destroy(struct zsda_pci_device *zsda_pci_dev);
+
+#endif /* _ZSDA_COMP_PMD_H_ */
-- 
2.27.0

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