[dpdk-dev] [PATCH v3 14/16] compress/qat: add fns to create and destroy the PMD

[Fiona Trahe <fiona.trahe@intel.com>]

Now that all the device operations are available,
add the functions to create and destroy the pmd.
Called on probe and remove of the qat pci device, these
register the device with the compressdev API
and plug in all the device functionality.

Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>
Signed-off-by: Tomasz Jozwiak <tomaszx.jozwiak@intel.com>
---
 drivers/common/qat/qat_device.h     |  4 ++
 drivers/common/qat/qat_qp.c         | 11 ++++-
 drivers/common/qat/qat_qp.h         |  5 ++
 drivers/compress/qat/qat_comp_pmd.c | 95 +++++++++++++++++++++++++++++++++++--
 drivers/compress/qat/qat_comp_pmd.h | 11 ++---
 5 files changed, 114 insertions(+), 12 deletions(-)

diff --git a/drivers/common/qat/qat_device.h b/drivers/common/qat/qat_device.h
index 0cb370c..9599fc5 100644
--- a/drivers/common/qat/qat_device.h
+++ b/drivers/common/qat/qat_device.h
@@ -25,6 +25,8 @@
  *  - runtime data
  */
 struct qat_sym_dev_private;
+struct qat_comp_dev_private;
+
 struct qat_pci_device {
 
 	/* Data used by all services */
@@ -55,6 +57,8 @@ struct qat_pci_device {
 	 */
 
 	/* Data relating to compression service */
+	struct qat_comp_dev_private *comp_dev;
+	/**< link back to compressdev private data */
 
 	/* Data relating to asymmetric crypto service */
 
diff --git a/drivers/common/qat/qat_qp.c b/drivers/common/qat/qat_qp.c
index 32c1759..7ca7a45 100644
--- a/drivers/common/qat/qat_qp.c
+++ b/drivers/common/qat/qat_qp.c
@@ -15,6 +15,7 @@
 #include "qat_device.h"
 #include "qat_qp.h"
 #include "qat_sym.h"
+#include "qat_comp.h"
 #include "adf_transport_access_macros.h"
 
 
@@ -606,8 +607,8 @@ qat_dequeue_op_burst(void *qp, void **ops, uint16_t nb_ops)
 
 		if (tmp_qp->service_type == QAT_SERVICE_SYMMETRIC)
 			qat_sym_process_response(ops, resp_msg);
-		/* add qat_asym_process_response here */
-		/* add qat_comp_process_response here */
+		else if (tmp_qp->service_type == QAT_SERVICE_COMPRESSION)
+			qat_comp_process_response(ops, resp_msg);
 
 		head = adf_modulo(head + rx_queue->msg_size,
 				  rx_queue->modulo_mask);
@@ -633,3 +634,9 @@ qat_dequeue_op_burst(void *qp, void **ops, uint16_t nb_ops)
 	}
 	return resp_counter;
 }
+
+__attribute__((weak)) int
+qat_comp_process_response(void **op __rte_unused, uint8_t *resp __rte_unused)
+{
+	return  0;
+}
diff --git a/drivers/common/qat/qat_qp.h b/drivers/common/qat/qat_qp.h
index 59db945..69f8a61 100644
--- a/drivers/common/qat/qat_qp.h
+++ b/drivers/common/qat/qat_qp.h
@@ -103,4 +103,9 @@ qat_qp_setup(struct qat_pci_device *qat_dev,
 int
 qat_qps_per_service(const struct qat_qp_hw_data *qp_hw_data,
 			enum qat_service_type service);
+
+/* Needed for weak function*/
+int
+qat_comp_process_response(void **op __rte_unused, uint8_t *resp __rte_unused);
+
 #endif /* _QAT_QP_H_ */
diff --git a/drivers/compress/qat/qat_comp_pmd.c b/drivers/compress/qat/qat_comp_pmd.c
index 41946af..4ff1518 100644
--- a/drivers/compress/qat/qat_comp_pmd.c
+++ b/drivers/compress/qat/qat_comp_pmd.c
@@ -5,6 +5,15 @@
 #include "qat_comp.h"
 #include "qat_comp_pmd.h"
 
+static const struct rte_compressdev_capabilities qat_comp_gen_capabilities[] = {
+	{/* COMPRESSION - deflate */
+	 .algo = RTE_COMP_ALGO_DEFLATE,
+	 .comp_feature_flags = RTE_COMP_FF_MULTI_PKT_CHECKSUM |
+			       RTE_COMP_FF_CRC32_ADLER32_CHECKSUM |
+			       RTE_COMP_FF_HUFFMAN_FIXED,
+	 .window_size = {.min = 15, .max = 15, .increment = 0} },
+	{RTE_COMP_ALGO_LIST_END, 0, {0, 0, 0} } };
+
 static void
 qat_comp_stats_get(struct rte_compressdev *dev,
 		struct rte_compressdev_stats *stats)
@@ -226,14 +235,14 @@ qat_comp_dev_info_get(struct rte_compressdev *dev,
 	}
 }
 
-uint16_t
+static uint16_t
 qat_comp_pmd_enqueue_op_burst(void *qp, struct rte_comp_op **ops,
 		uint16_t nb_ops)
 {
 	return qat_enqueue_op_burst(qp, (void **)ops, nb_ops);
 }
 
-uint16_t
+static uint16_t
 qat_comp_pmd_dequeue_op_burst(void *qp, struct rte_comp_op **ops,
 			      uint16_t nb_ops)
 {
@@ -241,7 +250,7 @@ qat_comp_pmd_dequeue_op_burst(void *qp, struct rte_comp_op **ops,
 }
 
 
-struct rte_compressdev_ops compress_qat_ops = {
+static struct rte_compressdev_ops compress_qat_ops = {
 
 	/* Device related operations */
 	.dev_configure		= qat_comp_dev_config,
@@ -259,3 +268,83 @@ struct rte_compressdev_ops compress_qat_ops = {
 	.private_xform_create	= qat_comp_private_xform_create,
 	.private_xform_free	= qat_comp_private_xform_free
 };
+
+int
+qat_comp_dev_create(struct qat_pci_device *qat_pci_dev)
+{
+	if (qat_pci_dev->qat_dev_gen == QAT_GEN1) {
+		QAT_LOG(ERR, "Compression PMD not supported on QAT dh895xcc");
+		return 0;
+	}
+
+	struct rte_compressdev_pmd_init_params init_params = {
+		.name = "",
+		.socket_id = qat_pci_dev->pci_dev->device.numa_node,
+	};
+	char name[RTE_COMPRESSDEV_NAME_MAX_LEN];
+	struct rte_compressdev *compressdev;
+	struct qat_comp_dev_private *comp_dev;
+
+	snprintf(name, RTE_COMPRESSDEV_NAME_MAX_LEN, "%s_%s",
+			qat_pci_dev->name, "comp");
+	QAT_LOG(DEBUG, "Creating QAT COMP device %s", name);
+
+	compressdev = rte_compressdev_pmd_create(name,
+			&qat_pci_dev->pci_dev->device,
+			sizeof(struct qat_comp_dev_private),
+			&init_params);
+
+	if (compressdev == NULL)
+		return -ENODEV;
+
+	compressdev->dev_ops = &compress_qat_ops;
+
+	compressdev->enqueue_burst = qat_comp_pmd_enqueue_op_burst;
+	compressdev->dequeue_burst = qat_comp_pmd_dequeue_op_burst;
+
+	compressdev->feature_flags = RTE_COMPDEV_FF_HW_ACCELERATED;
+
+	comp_dev = compressdev->data->dev_private;
+	comp_dev->qat_dev = qat_pci_dev;
+	comp_dev->compressdev = compressdev;
+	qat_pci_dev->comp_dev = comp_dev;
+
+	switch (qat_pci_dev->qat_dev_gen) {
+	case QAT_GEN1:
+	case QAT_GEN2:
+		comp_dev->qat_dev_capabilities = qat_comp_gen_capabilities;
+		break;
+	default:
+		comp_dev->qat_dev_capabilities = qat_comp_gen_capabilities;
+		QAT_LOG(DEBUG,
+			"QAT gen %d capabilities unknown, default to GEN1",
+					qat_pci_dev->qat_dev_gen);
+		break;
+	}
+
+	QAT_LOG(DEBUG,
+		    "Created QAT COMP device %s as compressdev instance %d",
+			name, compressdev->data->dev_id);
+	return 0;
+}
+
+int
+qat_comp_dev_destroy(struct qat_pci_device *qat_pci_dev)
+{
+	struct qat_comp_dev_private *comp_dev;
+
+	if (qat_pci_dev == NULL)
+		return -ENODEV;
+
+	comp_dev = qat_pci_dev->comp_dev;
+	if (comp_dev == NULL)
+		return 0;
+
+	/* clean up any resources used by the device */
+	qat_comp_dev_close(comp_dev->compressdev);
+
+	rte_compressdev_pmd_destroy(comp_dev->compressdev);
+	qat_pci_dev->comp_dev = NULL;
+
+	return 0;
+}
diff --git a/drivers/compress/qat/qat_comp_pmd.h b/drivers/compress/qat/qat_comp_pmd.h
index 7ba1b8d..9ad2a28 100644
--- a/drivers/compress/qat/qat_comp_pmd.h
+++ b/drivers/compress/qat/qat_comp_pmd.h
@@ -27,16 +27,13 @@ struct qat_comp_dev_private {
 	/**< The device's memory for intermediate buffers */
 	struct rte_mempool *xformpool;
 	/**< The device's pool for qat_comp_xforms */
-
 };
 
-uint16_t
-qat_comp_pmd_enqueue_op_burst(void *qp, struct rte_comp_op **ops,
-		uint16_t nb_ops);
+int
+qat_comp_dev_create(struct qat_pci_device *qat_pci_dev);
 
-uint16_t
-qat_comp_pmd_dequeue_op_burst(void *qp, struct rte_comp_op **ops,
-		uint16_t nb_ops);
+int
+qat_comp_dev_destroy(struct qat_pci_device *qat_pci_dev);
 
 #endif
 #endif /* _QAT_COMP_PMD_H_ */
-- 
2.7.4