New upstream version 18.08upstream/18.08

Change-Id: I32fdf5e5016556d9c0a6d88ddaf1fc468961790a
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

1 files changed, 397 insertions, 0 deletions

diff --git a/drivers/crypto/ccp/rte_ccp_pmd.c b/drivers/crypto/ccp/rte_ccp_pmd.c
new file mode 100644
index 00000000..92d8a955
--- /dev/null
+++ b/drivers/crypto/ccp/rte_ccp_pmd.c
@@ -0,0 +1,397 @@
+/*   SPDX-License-Identifier: BSD-3-Clause
+ *   Copyright(c) 2018 Advanced Micro Devices, Inc. All rights reserved.
+ */
+
+#include <rte_bus_pci.h>
+#include <rte_bus_vdev.h>
+#include <rte_common.h>
+#include <rte_config.h>
+#include <rte_cryptodev.h>
+#include <rte_cryptodev_pmd.h>
+#include <rte_pci.h>
+#include <rte_dev.h>
+#include <rte_malloc.h>
+
+#include "ccp_crypto.h"
+#include "ccp_dev.h"
+#include "ccp_pmd_private.h"
+
+/**
+ * Global static parameter used to find if CCP device is already initialized.
+ */
+static unsigned int ccp_pmd_init_done;
+uint8_t ccp_cryptodev_driver_id;
+
+struct ccp_pmd_init_params {
+	struct rte_cryptodev_pmd_init_params def_p;
+	bool auth_opt;
+};
+
+#define CCP_CRYPTODEV_PARAM_NAME		("name")
+#define CCP_CRYPTODEV_PARAM_SOCKET_ID		("socket_id")
+#define CCP_CRYPTODEV_PARAM_MAX_NB_QP		("max_nb_queue_pairs")
+#define CCP_CRYPTODEV_PARAM_AUTH_OPT		("ccp_auth_opt")
+
+const char *ccp_pmd_valid_params[] = {
+	CCP_CRYPTODEV_PARAM_NAME,
+	CCP_CRYPTODEV_PARAM_SOCKET_ID,
+	CCP_CRYPTODEV_PARAM_MAX_NB_QP,
+	CCP_CRYPTODEV_PARAM_AUTH_OPT,
+};
+
+/** ccp pmd auth option */
+enum ccp_pmd_auth_opt {
+	CCP_PMD_AUTH_OPT_CCP = 0,
+	CCP_PMD_AUTH_OPT_CPU,
+};
+
+/** parse integer from integer argument */
+static int
+parse_integer_arg(const char *key __rte_unused,
+		  const char *value, void *extra_args)
+{
+	int *i = (int *) extra_args;
+
+	*i = atoi(value);
+	if (*i < 0) {
+		CCP_LOG_ERR("Argument has to be positive.\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/** parse name argument */
+static int
+parse_name_arg(const char *key __rte_unused,
+	       const char *value, void *extra_args)
+{
+	struct rte_cryptodev_pmd_init_params *params = extra_args;
+
+	if (strlen(value) >= RTE_CRYPTODEV_NAME_MAX_LEN - 1) {
+		CCP_LOG_ERR("Invalid name %s, should be less than "
+			    "%u bytes.\n", value,
+			    RTE_CRYPTODEV_NAME_MAX_LEN - 1);
+		return -EINVAL;
+	}
+
+	strncpy(params->name, value, RTE_CRYPTODEV_NAME_MAX_LEN);
+
+	return 0;
+}
+
+/** parse authentication operation option */
+static int
+parse_auth_opt_arg(const char *key __rte_unused,
+		   const char *value, void *extra_args)
+{
+	struct ccp_pmd_init_params *params = extra_args;
+	int i;
+
+	i = atoi(value);
+	if (i < CCP_PMD_AUTH_OPT_CCP || i > CCP_PMD_AUTH_OPT_CPU) {
+		CCP_LOG_ERR("Invalid ccp pmd auth option. "
+			    "0->auth on CCP(default), "
+			    "1->auth on CPU\n");
+		return -EINVAL;
+	}
+	params->auth_opt = i;
+	return 0;
+}
+
+static int
+ccp_pmd_parse_input_args(struct ccp_pmd_init_params *params,
+			 const char *input_args)
+{
+	struct rte_kvargs *kvlist = NULL;
+	int ret = 0;
+
+	if (params == NULL)
+		return -EINVAL;
+
+	if (input_args) {
+		kvlist = rte_kvargs_parse(input_args,
+					  ccp_pmd_valid_params);
+		if (kvlist == NULL)
+			return -1;
+
+		ret = rte_kvargs_process(kvlist,
+					 CCP_CRYPTODEV_PARAM_MAX_NB_QP,
+					 &parse_integer_arg,
+					 &params->def_p.max_nb_queue_pairs);
+		if (ret < 0)
+			goto free_kvlist;
+
+		ret = rte_kvargs_process(kvlist,
+					 CCP_CRYPTODEV_PARAM_SOCKET_ID,
+					 &parse_integer_arg,
+					 &params->def_p.socket_id);
+		if (ret < 0)
+			goto free_kvlist;
+
+		ret = rte_kvargs_process(kvlist,
+					 CCP_CRYPTODEV_PARAM_NAME,
+					 &parse_name_arg,
+					 &params->def_p);
+		if (ret < 0)
+			goto free_kvlist;
+
+		ret = rte_kvargs_process(kvlist,
+					 CCP_CRYPTODEV_PARAM_AUTH_OPT,
+					 &parse_auth_opt_arg,
+					 params);
+		if (ret < 0)
+			goto free_kvlist;
+
+	}
+
+free_kvlist:
+	rte_kvargs_free(kvlist);
+	return ret;
+}
+
+static struct ccp_session *
+get_ccp_session(struct ccp_qp *qp, struct rte_crypto_op *op)
+{
+	struct ccp_session *sess = NULL;
+
+	if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
+		if (unlikely(op->sym->session == NULL))
+			return NULL;
+
+		sess = (struct ccp_session *)
+			get_sym_session_private_data(
+				op->sym->session,
+				ccp_cryptodev_driver_id);
+	} else if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
+		void *_sess;
+		void *_sess_private_data = NULL;
+		struct ccp_private *internals;
+
+		if (rte_mempool_get(qp->sess_mp, &_sess))
+			return NULL;
+		if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))
+			return NULL;
+
+		sess = (struct ccp_session *)_sess_private_data;
+
+		internals = (struct ccp_private *)qp->dev->data->dev_private;
+		if (unlikely(ccp_set_session_parameters(sess, op->sym->xform,
+							internals) != 0)) {
+			rte_mempool_put(qp->sess_mp, _sess);
+			rte_mempool_put(qp->sess_mp, _sess_private_data);
+			sess = NULL;
+		}
+		op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
+		set_sym_session_private_data(op->sym->session,
+					 ccp_cryptodev_driver_id,
+					 _sess_private_data);
+	}
+
+	return sess;
+}
+
+static uint16_t
+ccp_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
+		      uint16_t nb_ops)
+{
+	struct ccp_session *sess = NULL;
+	struct ccp_qp *qp = queue_pair;
+	struct ccp_queue *cmd_q;
+	struct rte_cryptodev *dev = qp->dev;
+	uint16_t i, enq_cnt = 0, slots_req = 0;
+
+	if (nb_ops == 0)
+		return 0;
+
+	if (unlikely(rte_ring_full(qp->processed_pkts) != 0))
+		return 0;
+
+	for (i = 0; i < nb_ops; i++) {
+		sess = get_ccp_session(qp, ops[i]);
+		if (unlikely(sess == NULL) && (i == 0)) {
+			qp->qp_stats.enqueue_err_count++;
+			return 0;
+		} else if (sess == NULL) {
+			nb_ops = i;
+			break;
+		}
+		slots_req += ccp_compute_slot_count(sess);
+	}
+
+	cmd_q = ccp_allot_queue(dev, slots_req);
+	if (unlikely(cmd_q == NULL))
+		return 0;
+
+	enq_cnt = process_ops_to_enqueue(qp, ops, cmd_q, nb_ops, slots_req);
+	qp->qp_stats.enqueued_count += enq_cnt;
+	return enq_cnt;
+}
+
+static uint16_t
+ccp_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops,
+		uint16_t nb_ops)
+{
+	struct ccp_qp *qp = queue_pair;
+	uint16_t nb_dequeued = 0, i;
+
+	nb_dequeued = process_ops_to_dequeue(qp, ops, nb_ops);
+
+	/* Free session if a session-less crypto op */
+	for (i = 0; i < nb_dequeued; i++)
+		if (unlikely(ops[i]->sess_type ==
+			     RTE_CRYPTO_OP_SESSIONLESS)) {
+			rte_mempool_put(qp->sess_mp,
+					ops[i]->sym->session);
+			ops[i]->sym->session = NULL;
+		}
+	qp->qp_stats.dequeued_count += nb_dequeued;
+
+	return nb_dequeued;
+}
+
+/*
+ * The set of PCI devices this driver supports
+ */
+static struct rte_pci_id ccp_pci_id[] = {
+	{
+		RTE_PCI_DEVICE(0x1022, 0x1456), /* AMD CCP-5a */
+	},
+	{
+		RTE_PCI_DEVICE(0x1022, 0x1468), /* AMD CCP-5b */
+	},
+	{.device_id = 0},
+};
+
+/** Remove ccp pmd */
+static int
+cryptodev_ccp_remove(struct rte_vdev_device *dev)
+{
+	const char *name;
+
+	ccp_pmd_init_done = 0;
+	name = rte_vdev_device_name(dev);
+	if (name == NULL)
+		return -EINVAL;
+
+	RTE_LOG(INFO, PMD, "Closing ccp device %s on numa socket %u\n",
+			name, rte_socket_id());
+
+	return 0;
+}
+
+/** Create crypto device */
+static int
+cryptodev_ccp_create(const char *name,
+		     struct rte_vdev_device *vdev,
+		     struct ccp_pmd_init_params *init_params)
+{
+	struct rte_cryptodev *dev;
+	struct ccp_private *internals;
+	uint8_t cryptodev_cnt = 0;
+
+	if (init_params->def_p.name[0] == '\0')
+		snprintf(init_params->def_p.name,
+			 sizeof(init_params->def_p.name),
+			 "%s", name);
+
+	dev = rte_cryptodev_pmd_create(init_params->def_p.name,
+				       &vdev->device,
+				       &init_params->def_p);
+	if (dev == NULL) {
+		CCP_LOG_ERR("failed to create cryptodev vdev");
+		goto init_error;
+	}
+
+	cryptodev_cnt = ccp_probe_devices(ccp_pci_id);
+
+	if (cryptodev_cnt == 0) {
+		CCP_LOG_ERR("failed to detect CCP crypto device");
+		goto init_error;
+	}
+
+	printf("CCP : Crypto device count = %d\n", cryptodev_cnt);
+	dev->driver_id = ccp_cryptodev_driver_id;
+
+	/* register rx/tx burst functions for data path */
+	dev->dev_ops = ccp_pmd_ops;
+	dev->enqueue_burst = ccp_pmd_enqueue_burst;
+	dev->dequeue_burst = ccp_pmd_dequeue_burst;
+
+	dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
+			RTE_CRYPTODEV_FF_HW_ACCELERATED |
+			RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING;
+
+	internals = dev->data->dev_private;
+
+	internals->max_nb_qpairs = init_params->def_p.max_nb_queue_pairs;
+	internals->auth_opt = init_params->auth_opt;
+	internals->crypto_num_dev = cryptodev_cnt;
+
+	return 0;
+
+init_error:
+	CCP_LOG_ERR("driver %s: %s() failed",
+		    init_params->def_p.name, __func__);
+	cryptodev_ccp_remove(vdev);
+
+	return -EFAULT;
+}
+
+/** Probe ccp pmd */
+static int
+cryptodev_ccp_probe(struct rte_vdev_device *vdev)
+{
+	int rc = 0;
+	const char *name;
+	struct ccp_pmd_init_params init_params = {
+		.def_p = {
+			"",
+			sizeof(struct ccp_private),
+			rte_socket_id(),
+			CCP_PMD_MAX_QUEUE_PAIRS
+		},
+		.auth_opt = CCP_PMD_AUTH_OPT_CCP,
+	};
+	const char *input_args;
+
+	if (ccp_pmd_init_done) {
+		RTE_LOG(INFO, PMD, "CCP PMD already initialized\n");
+		return -EFAULT;
+	}
+	name = rte_vdev_device_name(vdev);
+	if (name == NULL)
+		return -EINVAL;
+
+	input_args = rte_vdev_device_args(vdev);
+	ccp_pmd_parse_input_args(&init_params, input_args);
+	init_params.def_p.max_nb_queue_pairs = CCP_PMD_MAX_QUEUE_PAIRS;
+
+	RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
+		init_params.def_p.socket_id);
+	RTE_LOG(INFO, PMD, "Max number of queue pairs = %d\n",
+		init_params.def_p.max_nb_queue_pairs);
+	RTE_LOG(INFO, PMD, "Authentication offload to %s\n",
+		((init_params.auth_opt == 0) ? "CCP" : "CPU"));
+
+	rc = cryptodev_ccp_create(name, vdev, &init_params);
+	if (rc)
+		return rc;
+	ccp_pmd_init_done = 1;
+	return 0;
+}
+
+static struct rte_vdev_driver cryptodev_ccp_pmd_drv = {
+	.probe = cryptodev_ccp_probe,
+	.remove = cryptodev_ccp_remove
+};
+
+static struct cryptodev_driver ccp_crypto_drv;
+
+RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_CCP_PMD, cryptodev_ccp_pmd_drv);
+RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_CCP_PMD,
+	"max_nb_queue_pairs=<int> "
+	"socket_id=<int> "
+	"ccp_auth_opt=<int>");
+RTE_PMD_REGISTER_CRYPTO_DRIVER(ccp_crypto_drv, cryptodev_ccp_pmd_drv.driver,
+			       ccp_cryptodev_driver_id);