[PATCH 10/11] crypto/cnxk: add CPTR read and write

[Tejasree Kondoj <ktejasree@marvell.com>]

From: Anoob Joseph <anoobj@marvell.com>

Add PMD API for CPTR read and write.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
---
 drivers/crypto/cnxk/cnxk_cryptodev_ops.c  | 71 +++++++++++++++++++++++
 drivers/crypto/cnxk/rte_pmd_cnxk_crypto.h | 52 +++++++++++++++++
 drivers/crypto/cnxk/version.map           |  2 +
 3 files changed, 125 insertions(+)

diff --git a/drivers/crypto/cnxk/cnxk_cryptodev_ops.c b/drivers/crypto/cnxk/cnxk_cryptodev_ops.c
index ccb800730c..a7d58a5445 100644
--- a/drivers/crypto/cnxk/cnxk_cryptodev_ops.c
+++ b/drivers/crypto/cnxk/cnxk_cryptodev_ops.c
@@ -2,6 +2,7 @@
  * Copyright(C) 2021 Marvell.
  */
 
+#include <rte_atomic.h>
 #include <rte_cryptodev.h>
 #include <cryptodev_pmd.h>
 #include <rte_errno.h>
@@ -1090,3 +1091,73 @@ rte_pmd_cnxk_crypto_cptr_get(struct rte_pmd_cnxk_crypto_sess *rte_sess)
 	plt_err("Invalid session type");
 	return NULL;
 }
+
+int
+rte_pmd_cnxk_crypto_cptr_read(struct rte_pmd_cnxk_crypto_qptr *qptr,
+			      struct rte_pmd_cnxk_crypto_cptr *cptr, void *data, uint32_t len)
+{
+	struct cnxk_cpt_qp *qp = PLT_PTR_CAST(qptr);
+	int ret;
+
+	if (unlikely(qptr == NULL)) {
+		plt_err("Invalid queue pair pointer");
+		return -EINVAL;
+	}
+
+	if (unlikely(cptr == NULL)) {
+		plt_err("Invalid CPTR pointer");
+		return -EINVAL;
+	}
+
+	if (unlikely(data == NULL)) {
+		plt_err("Invalid data pointer");
+		return -EINVAL;
+	}
+
+	ret = roc_cpt_lf_ctx_flush(&qp->lf, cptr, false);
+	if (ret)
+		return ret;
+
+	/* Wait for the flush to complete. */
+	rte_delay_ms(1);
+
+	memcpy(data, cptr, len);
+	return 0;
+}
+
+int
+rte_pmd_cnxk_crypto_cptr_write(struct rte_pmd_cnxk_crypto_qptr *qptr,
+			       struct rte_pmd_cnxk_crypto_cptr *cptr, void *data, uint32_t len)
+{
+	struct cnxk_cpt_qp *qp = PLT_PTR_CAST(qptr);
+	int ret;
+
+	if (unlikely(qptr == NULL)) {
+		plt_err("Invalid queue pair pointer");
+		return -EINVAL;
+	}
+
+	if (unlikely(cptr == NULL)) {
+		plt_err("Invalid CPTR pointer");
+		return -EINVAL;
+	}
+
+	if (unlikely(data == NULL)) {
+		plt_err("Invalid data pointer");
+		return -EINVAL;
+	}
+
+	ret = roc_cpt_ctx_write(&qp->lf, data, cptr, len);
+	if (ret) {
+		plt_err("Could not write to CPTR");
+		return ret;
+	}
+
+	ret = roc_cpt_lf_ctx_flush(&qp->lf, cptr, false);
+	if (ret)
+		return ret;
+
+	rte_atomic_thread_fence(rte_memory_order_seq_cst);
+
+	return 0;
+}
diff --git a/drivers/crypto/cnxk/rte_pmd_cnxk_crypto.h b/drivers/crypto/cnxk/rte_pmd_cnxk_crypto.h
index 7a7d20c290..454261022b 100644
--- a/drivers/crypto/cnxk/rte_pmd_cnxk_crypto.h
+++ b/drivers/crypto/cnxk/rte_pmd_cnxk_crypto.h
@@ -124,4 +124,56 @@ __rte_experimental
 struct rte_pmd_cnxk_crypto_cptr *rte_pmd_cnxk_crypto_cptr_get(
 	struct rte_pmd_cnxk_crypto_sess *rte_sess);
 
+/**
+ * Read HW context (CPTR).
+ *
+ * @param qptr
+ *   Pointer obtained with ``rte_pmd_cnxk_crypto_qptr_get``.
+ * @param cptr
+ *   Pointer obtained with ``rte_pmd_cnxk_crypto_cptr_get`` or any valid CPTR address that can be
+ *   used with CPT CTX cache.
+ * @param[out] data
+ *   Destination pointer to copy CPTR context for application.
+ * @param len
+ *   Length of CPTR context to copy into data parameter.
+ *
+ * @return
+ *   - 0 On success.
+ *   - Negative value on error.
+ *     - -EINVAL if the input parameters are invalid.
+ *     - -ENOTSUP if the operation is not supported.
+ *     - -EAGAIN if the operation is not successful.
+ *     - -EFAULT if the operation failed.
+ */
+__rte_experimental
+int rte_pmd_cnxk_crypto_cptr_read(struct rte_pmd_cnxk_crypto_qptr *qptr,
+				  struct rte_pmd_cnxk_crypto_cptr *cptr, void *data,
+				  uint32_t len);
+
+/**
+ * Write HW context (CPTR).
+ *
+ * @param qptr
+ *  Pointer obtained with ``rte_pmd_cnxk_crypto_qptr_get``.
+ * @param cptr
+ *  Pointer obtained with ``rte_pmd_cnxk_crypto_cptr_get`` or any valid CPTR address that can be
+ *  used with CPT CTX cache.
+ * @param data
+ *  Source pointer to copy CPTR context from application.
+ * @param len
+ *  Length of CPTR context to copy from data parameter.
+ *
+ * @return
+ *   - 0 On success.
+ *   - Negative value on error.
+ *     - -EINVAL if the input parameters are invalid.
+ *     - -ENOTSUP if the operation is not supported.
+ *     - -EAGAIN if the operation is not successful.
+ *     - -EFAULT if the operation failed.
+ */
+__rte_experimental
+int rte_pmd_cnxk_crypto_cptr_write(struct rte_pmd_cnxk_crypto_qptr *qptr,
+				   struct rte_pmd_cnxk_crypto_cptr *cptr, void *data,
+				   uint32_t len);
+
 #endif /* _PMD_CNXK_CRYPTO_H_ */
diff --git a/drivers/crypto/cnxk/version.map b/drivers/crypto/cnxk/version.map
index 7a8122dc1d..6e51f7be1a 100644
--- a/drivers/crypto/cnxk/version.map
+++ b/drivers/crypto/cnxk/version.map
@@ -8,6 +8,8 @@ EXPERIMENTAL {
 	# added in 24.07
 	rte_pmd_cnxk_crypto_cptr_flush;
 	rte_pmd_cnxk_crypto_cptr_get;
+	rte_pmd_cnxk_crypto_cptr_read;
+	rte_pmd_cnxk_crypto_cptr_write;
 };
 
 INTERNAL {
-- 
2.25.1