drivers/crypto/fsl: add constructs for protocol descriptors

Construct APIs are added to create Protocol Descriptors for
CAAM block.

Signed-off-by: Ruchika Gupta <ruchika.gupta@nxp.com>
Signed-off-by: Aneesh Bansal <aneesh.bansal@nxp.com>
CC: Ulises Cardenas <raul.casas@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/crypto/fsl/desc_constr.h b/drivers/crypto/fsl/desc_constr.h
index 2559ccda8c..4ea93b03a2 100644
--- a/drivers/crypto/fsl/desc_constr.h
+++ b/drivers/crypto/fsl/desc_constr.h
@@ -53,6 +53,19 @@ union ptr_addr_t {
 };
 #endif
 
+static inline void pdb_add_ptr(dma_addr_t *offset, dma_addr_t ptr)
+{
+#ifdef CONFIG_PHYS_64BIT
+	/* The Position of low and high part of 64 bit address
+	 * will depend on the endianness of CAAM Block */
+	union ptr_addr_t *ptr_addr = (union ptr_addr_t *)offset;
+	ptr_addr->m_halfs.high = (u32)(ptr >> 32);
+	ptr_addr->m_halfs.low = (u32)ptr;
+#else
+	*offset = ptr;
+#endif
+}
+
 static inline int desc_len(u32 *desc)
 {
 	return *desc & HDR_DESCLEN_MASK;
@@ -68,6 +81,11 @@ static inline u32 *desc_end(u32 *desc)
 	return desc + desc_len(desc);
 }
 
+static inline void *desc_pdb(u32 *desc)
+{
+	return desc + 1;
+}
+
 static inline void init_desc(u32 *desc, u32 options)
 {
 	*desc = (options | HDR_ONE) + 1;
@@ -78,6 +96,15 @@ static inline void init_job_desc(u32 *desc, u32 options)
 	init_desc(desc, CMD_DESC_HDR | options);
 }
 
+static inline void init_job_desc_pdb(u32 *desc, u32 options, size_t pdb_bytes)
+{
+	u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;
+
+	init_job_desc(desc,
+		      (((pdb_len + 1) << HDR_START_IDX_SHIFT) + pdb_len) |
+		       options);
+}
+
 static inline void append_ptr(u32 *desc, dma_addr_t ptr)
 {
 	dma_addr_t *offset = (dma_addr_t *)desc_end(desc);