[PATCH v11 09/12] compress/zsda: add zsda compress PMD

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

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The patch provides a series of interfaces for managing
and controlling the configuration, start, stop,
resource management, etc. of compression devices.

Signed-off-by: Hanxiao Li <li.hanxiao@zte.com.cn>
---
 drivers/common/zsda/meson.build       |   2 +-
 drivers/compress/zsda/zsda_comp_pmd.c | 464 ++++++++++++++++++++++++++
 drivers/compress/zsda/zsda_comp_pmd.h |  34 ++
 3 files changed, 499 insertions(+), 1 deletion(-)
 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 f873a357e3..20fb37caaf 100644
--- a/drivers/common/zsda/meson.build
+++ b/drivers/common/zsda/meson.build
@@ -20,7 +20,7 @@ zsda_compress_path = 'compress/zsda'
 zsda_compress_relpath = '../../' + zsda_compress_path
 includes += include_directories(zsda_compress_relpath)
 if zsda_compress
-	foreach f: ['zsda_comp.c']
+	foreach f: ['zsda_comp.c', 'zsda_comp_pmd.c']
 		sources += files(join_paths(zsda_compress_relpath, f))
 	endforeach
 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..32221c42a3
--- /dev/null
+++ b/drivers/compress/zsda/zsda_comp_pmd.c
@@ -0,0 +1,464 @@
+/* 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},
+	},
+};
+
+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
+zsda_setup_comp_queue(struct zsda_pci_device *zsda_pci_dev, const uint16_t qp_id,
+		 struct zsda_qp *qp, uint16_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;
+
+	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 = zsda_common_setup_qp(zsda_pci_dev->zsda_dev_id, &qp, qp_id, &conf);
+	qp->srv[type].rx_cb = zsda_comp_callback;
+	qp->srv[type].tx_cb = zsda_build_comp_request;
+	qp->srv[type].match = zsda_comp_match;
+
+	return ret;
+}
+
+static int
+zsda_setup_decomp_queue(struct zsda_pci_device *zsda_pci_dev, const uint16_t qp_id,
+		   struct zsda_qp *qp, uint16_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;
+
+	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 = zsda_common_setup_qp(zsda_pci_dev->zsda_dev_id, &qp, qp_id, &conf);
+	qp->srv[type].rx_cb = zsda_comp_callback;
+	qp->srv[type].tx_cb = zsda_build_decomp_request;
+	qp->srv[type].match = zsda_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_nb_qps.encomp;
+	uint16_t num_qps_decomp = zsda_nb_qps.decomp;
+	uint16_t nb_des = max_inflight_ops & 0xffff;
+
+	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 = zsda_setup_comp_queue(zsda_pci_dev, qp_id, qp_new, nb_des,
+					socket_id);
+	else if (num_qps_decomp == MAX_QPS_ON_FUNCTION)
+		ret = zsda_setup_decomp_queue(zsda_pci_dev, qp_id, qp_new, nb_des,
+					  socket_id);
+	else {
+		ret = zsda_setup_comp_queue(zsda_pci_dev, qp_id, qp_new, nb_des,
+					socket_id);
+		ret |= zsda_setup_decomp_queue(zsda_pci_dev, qp_id, qp_new, nb_des,
+					  socket_id);
+	}
+
+	if (ret) {
+		rte_free(qp_new);
+		return ret;
+	}
+
+	*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 = *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 = 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)
+{
+	uint16_t i;
+	struct zsda_comp_dev_private *comp_dev = dev->data->dev_private;
+
+	for (i = 0; i < dev->data->nb_queue_pairs; i++)
+		zsda_comp_qp_release(dev, i);
+
+	rte_mempool_free(comp_dev->xformpool);
+	comp_dev->xformpool = NULL;
+
+	return 0;
+}
+
+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 uint16_t
+zsda_comp_max_nb_qps(void)
+{
+	uint16_t comp = zsda_nb_qps.encomp;
+	uint16_t decomp = zsda_nb_qps.decomp;
+	uint16_t min = 0;
+
+	if ((comp == MAX_QPS_ON_FUNCTION) ||
+		(decomp == MAX_QPS_ON_FUNCTION))
+		min = MAX_QPS_ON_FUNCTION;
+	else
+		min = (comp < decomp) ? comp : decomp;
+	if (min == 0)
+		return MAX_QPS_ON_FUNCTION;
+	return min;
+}
+
+
+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();
+		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;
+	uint16_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..da91cf06c3
--- /dev/null
+++ b/drivers/compress/zsda/zsda_comp_pmd.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 ZTE Corporation
+ */
+
+#ifndef _ZSDA_COMP_PMD_H_
+#define _ZSDA_COMP_PMD_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 */
+	struct rte_mempool *xformpool;
+	/**< The device's pool for zsda_comp_xforms */
+	const struct rte_memzone *capa_mz;
+	/* Shared memzone for storing capabilities */
+};
+
+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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