| /* |
| * caam - Freescale FSL CAAM support for Public Key Cryptography descriptors |
| * |
| * Copyright 2016 Freescale Semiconductor, Inc. |
| * |
| * There is no Shared Descriptor for PKC so that the Job Descriptor must carry |
| * all the desired key parameters, input and output pointers. |
| */ |
| |
| #ifndef _PKC_DESC_H_ |
| #define _PKC_DESC_H_ |
| #include "compat.h" |
| #include "pdb.h" |
| |
| /** |
| * caam_rsa_key - CAAM RSA key structure. Keys are allocated in DMA zone. |
| * @n : RSA modulus raw byte stream |
| * @e : RSA public exponent raw byte stream |
| * @d : RSA private exponent raw byte stream |
| * @n_sz : length in bytes of RSA modulus n |
| * @e_sz : length in bytes of RSA public exponent |
| * @d_sz : length in bytes of RSA private exponent |
| */ |
| struct caam_rsa_key { |
| u8 *n; |
| u8 *e; |
| u8 *d; |
| size_t n_sz; |
| size_t e_sz; |
| size_t d_sz; |
| }; |
| |
| /** |
| * caam_rsa_ctx - per session context. |
| * @key : RSA key in DMA zone |
| * @dev : device structure |
| */ |
| struct caam_rsa_ctx { |
| struct caam_rsa_key key; |
| struct device *dev; |
| }; |
| |
| /** |
| * rsa_edesc - s/w-extended rsa descriptor |
| * @src_nents : number of segments in input scatterlist |
| * @dst_nents : number of segments in output scatterlist |
| * @sec4_sg_bytes : length of h/w link table |
| * @sec4_sg_dma : dma address of h/w link table |
| * @sec4_sg : pointer to h/w link table |
| * @pdb : specific RSA Protocol Data Block (PDB) |
| * @hw_desc : descriptor followed by link tables if any |
| */ |
| struct rsa_edesc { |
| int src_nents; |
| int dst_nents; |
| int sec4_sg_bytes; |
| dma_addr_t sec4_sg_dma; |
| struct sec4_sg_entry *sec4_sg; |
| union { |
| struct rsa_pub_pdb pub; |
| struct rsa_priv_f1_pdb priv_f1; |
| } pdb; |
| u32 hw_desc[]; |
| }; |
| |
| /* Descriptor construction primitives. */ |
| void init_rsa_pub_desc(u32 *desc, struct rsa_pub_pdb *pdb); |
| void init_rsa_priv_f1_desc(u32 *desc, struct rsa_priv_f1_pdb *pdb); |
| |
| #endif |