[PATCH v2 2/3] compress/uadk: support basic operations

[Zhangfei Gao <zhangfei.gao@linaro.org>]

Support the basic dev control operations: configure, close,
start, stop, infos_get, and queue pairs operations, etc.

Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
---
 drivers/compress/uadk/uadk_compress_pmd.c     | 279 +++++++++++++++++-
 .../compress/uadk/uadk_compress_pmd_private.h |  16 +
 2 files changed, 294 insertions(+), 1 deletion(-)

diff --git a/drivers/compress/uadk/uadk_compress_pmd.c b/drivers/compress/uadk/uadk_compress_pmd.c
index 6ffc22a0d2..9e2dc3e308 100644
--- a/drivers/compress/uadk/uadk_compress_pmd.c
+++ b/drivers/compress/uadk/uadk_compress_pmd.c
@@ -12,7 +12,284 @@
 
 #include "uadk_compress_pmd_private.h"
 
-static struct rte_compressdev_ops uadk_compress_pmd_ops;
+static const struct
+rte_compressdev_capabilities uadk_compress_pmd_capabilities[] = {
+	{   /* Deflate */
+		.algo = RTE_COMP_ALGO_DEFLATE,
+		.comp_feature_flags = RTE_COMP_FF_SHAREABLE_PRIV_XFORM |
+				      RTE_COMP_FF_HUFFMAN_FIXED |
+				      RTE_COMP_FF_HUFFMAN_DYNAMIC,
+	},
+
+	RTE_COMP_END_OF_CAPABILITIES_LIST()
+};
+
+static int
+uadk_compress_pmd_config(struct rte_compressdev *dev,
+			 struct rte_compressdev_config *config __rte_unused)
+{
+	struct uadk_compress_priv *priv = dev->data->dev_private;
+	int ret;
+
+	if (!priv->env_init) {
+		ret = wd_comp_env_init(NULL);
+		if (ret < 0)
+			return -EINVAL;
+		priv->env_init = true;
+	}
+
+	return 0;
+}
+
+static int
+uadk_compress_pmd_start(struct rte_compressdev *dev __rte_unused)
+{
+	return 0;
+}
+
+static void
+uadk_compress_pmd_stop(struct rte_compressdev *dev __rte_unused)
+{
+}
+
+static int
+uadk_compress_pmd_close(struct rte_compressdev *dev)
+{
+	struct uadk_compress_priv *priv = dev->data->dev_private;
+
+	if (priv->env_init) {
+		wd_comp_env_uninit();
+		priv->env_init = false;
+	}
+
+	return 0;
+}
+
+static void
+uadk_compress_pmd_stats_get(struct rte_compressdev *dev,
+			    struct rte_compressdev_stats *stats)
+{
+	int qp_id;
+
+	for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
+		struct uadk_compress_qp *qp = dev->data->queue_pairs[qp_id];
+
+		stats->enqueued_count += qp->qp_stats.enqueued_count;
+		stats->dequeued_count += qp->qp_stats.dequeued_count;
+		stats->enqueue_err_count += qp->qp_stats.enqueue_err_count;
+		stats->dequeue_err_count += qp->qp_stats.dequeue_err_count;
+	}
+}
+
+static void
+uadk_compress_pmd_stats_reset(struct rte_compressdev *dev)
+{
+	int qp_id;
+
+	for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
+		struct uadk_compress_qp *qp = dev->data->queue_pairs[qp_id];
+
+		memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
+	}
+}
+
+static void
+uadk_compress_pmd_info_get(struct rte_compressdev *dev,
+			   struct rte_compressdev_info *dev_info)
+{
+	if (dev_info != NULL) {
+		dev_info->driver_name = dev->device->driver->name;
+		dev_info->feature_flags = dev->feature_flags;
+		dev_info->capabilities = uadk_compress_pmd_capabilities;
+	}
+}
+
+static int
+uadk_compress_pmd_qp_release(struct rte_compressdev *dev, uint16_t qp_id)
+{
+	struct uadk_compress_qp *qp = dev->data->queue_pairs[qp_id];
+
+	if (qp != NULL) {
+		rte_ring_free(qp->processed_pkts);
+		rte_free(qp);
+		dev->data->queue_pairs[qp_id] = NULL;
+	}
+
+	return 0;
+}
+
+static int
+uadk_pmd_qp_set_unique_name(struct rte_compressdev *dev,
+			    struct uadk_compress_qp *qp)
+{
+	unsigned int n = snprintf(qp->name, sizeof(qp->name),
+				 "uadk_pmd_%u_qp_%u",
+				 dev->data->dev_id, qp->id);
+
+	if (n >= sizeof(qp->name))
+		return -EINVAL;
+
+	return 0;
+}
+
+static struct rte_ring *
+uadk_pmd_qp_create_processed_pkts_ring(struct uadk_compress_qp *qp,
+				       unsigned int ring_size, int socket_id)
+{
+	struct rte_ring *r = qp->processed_pkts;
+
+	if (r) {
+		if (rte_ring_get_size(r) >= ring_size) {
+			UADK_LOG(INFO, "Reusing existing ring %s for processed packets",
+				 qp->name);
+			return r;
+		}
+
+		UADK_LOG(ERR, "Unable to reuse existing ring %s for processed packets",
+			 qp->name);
+		return NULL;
+	}
+
+	return rte_ring_create(qp->name, ring_size, socket_id,
+			       RING_F_EXACT_SZ);
+}
+
+static int
+uadk_compress_pmd_qp_setup(struct rte_compressdev *dev, uint16_t qp_id,
+			   uint32_t max_inflight_ops, int socket_id)
+{
+	struct uadk_compress_qp *qp = NULL;
+
+	/* Free memory prior to re-allocation if needed. */
+	if (dev->data->queue_pairs[qp_id] != NULL)
+		uadk_compress_pmd_qp_release(dev, qp_id);
+
+	/* Allocate the queue pair data structure. */
+	qp = rte_zmalloc_socket("uadk PMD Queue Pair", sizeof(*qp),
+				RTE_CACHE_LINE_SIZE, socket_id);
+	if (qp == NULL)
+		return (-ENOMEM);
+
+	qp->id = qp_id;
+	dev->data->queue_pairs[qp_id] = qp;
+
+	if (uadk_pmd_qp_set_unique_name(dev, qp))
+		goto qp_setup_cleanup;
+
+	qp->processed_pkts = uadk_pmd_qp_create_processed_pkts_ring(qp,
+						max_inflight_ops, socket_id);
+	if (qp->processed_pkts == NULL)
+		goto qp_setup_cleanup;
+
+	memset(&qp->qp_stats, 0, sizeof(qp->qp_stats));
+
+	return 0;
+
+qp_setup_cleanup:
+	if (qp) {
+		rte_free(qp);
+		qp = NULL;
+	}
+	return -EINVAL;
+}
+
+static int
+uadk_compress_pmd_xform_create(struct rte_compressdev *dev __rte_unused,
+			       const struct rte_comp_xform *xform,
+			       void **private_xform)
+{
+	struct wd_comp_sess_setup setup = {0};
+	struct sched_params param = {0};
+	struct uadk_compress_xform *xfrm;
+	handle_t handle;
+
+	if (xform == NULL) {
+		UADK_LOG(ERR, "invalid xform struct");
+		return -EINVAL;
+	}
+
+	xfrm = rte_malloc(NULL, sizeof(struct uadk_compress_xform), 0);
+	if (xfrm == NULL)
+		return -ENOMEM;
+
+	switch (xform->type) {
+	case RTE_COMP_COMPRESS:
+		switch (xform->compress.algo) {
+		case RTE_COMP_ALGO_NULL:
+			break;
+		case RTE_COMP_ALGO_DEFLATE:
+			setup.alg_type = WD_DEFLATE;
+			setup.win_sz = WD_COMP_WS_8K;
+			setup.comp_lv = WD_COMP_L8;
+			setup.op_type = WD_DIR_COMPRESS;
+			param.type = setup.op_type;
+			param.numa_id = -1;	/* choose nearby numa node */
+			setup.sched_param = &param;
+			break;
+		default:
+			goto err;
+		}
+		break;
+	case RTE_COMP_DECOMPRESS:
+		switch (xform->decompress.algo) {
+		case RTE_COMP_ALGO_NULL:
+			break;
+		case RTE_COMP_ALGO_DEFLATE:
+			setup.alg_type = WD_DEFLATE;
+			setup.comp_lv = WD_COMP_L8;
+			setup.op_type = WD_DIR_DECOMPRESS;
+			param.type = setup.op_type;
+			param.numa_id = -1;	/* choose nearby numa node */
+			setup.sched_param = &param;
+			break;
+		default:
+			goto err;
+		}
+		break;
+	default:
+		UADK_LOG(ERR, "Algorithm %u is not supported.", xform->type);
+		goto err;
+	}
+
+	handle = wd_comp_alloc_sess(&setup);
+	if (!handle)
+		goto err;
+
+	xfrm->handle = handle;
+	xfrm->type = xform->type;
+	*private_xform = xfrm;
+	return 0;
+
+err:
+	rte_free(xfrm);
+	return -EINVAL;
+}
+
+static int
+uadk_compress_pmd_xform_free(struct rte_compressdev *dev __rte_unused, void *xform)
+{
+	if (!xform)
+		return -EINVAL;
+
+	wd_comp_free_sess(((struct uadk_compress_xform *)xform)->handle);
+	rte_free(xform);
+
+	return 0;
+}
+
+static struct rte_compressdev_ops uadk_compress_pmd_ops = {
+		.dev_configure		= uadk_compress_pmd_config,
+		.dev_start		= uadk_compress_pmd_start,
+		.dev_stop		= uadk_compress_pmd_stop,
+		.dev_close		= uadk_compress_pmd_close,
+		.stats_get		= uadk_compress_pmd_stats_get,
+		.stats_reset		= uadk_compress_pmd_stats_reset,
+		.dev_infos_get		= uadk_compress_pmd_info_get,
+		.queue_pair_setup	= uadk_compress_pmd_qp_setup,
+		.queue_pair_release	= uadk_compress_pmd_qp_release,
+		.private_xform_create	= uadk_compress_pmd_xform_create,
+		.private_xform_free	= uadk_compress_pmd_xform_free,
+};
 
 static int
 uadk_compress_probe(struct rte_vdev_device *vdev)
diff --git a/drivers/compress/uadk/uadk_compress_pmd_private.h b/drivers/compress/uadk/uadk_compress_pmd_private.h
index 88e9075619..b09569fb94 100644
--- a/drivers/compress/uadk/uadk_compress_pmd_private.h
+++ b/drivers/compress/uadk/uadk_compress_pmd_private.h
@@ -10,6 +10,22 @@ struct uadk_compress_priv {
 	bool env_init;
 };
 
+struct __rte_cache_aligned uadk_compress_qp {
+	/* Ring for placing process packets */
+	struct rte_ring *processed_pkts;
+	/* Queue pair statistics */
+	struct rte_compressdev_stats qp_stats;
+	/* Queue Pair Identifier */
+	uint16_t id;
+	/* Unique Queue Pair Name */
+	char name[RTE_COMPRESSDEV_NAME_MAX_LEN];
+};
+
+struct  uadk_compress_xform {
+	handle_t handle;
+	enum rte_comp_xform_type type;
+};
+
 extern int uadk_compress_logtype;
 
 #define UADK_LOG(level, fmt, ...)  \
-- 
2.25.1