Tudor Ambarus | 8c41977 | 2016-07-04 13:12:08 +0300 | [diff] [blame] | 1 | /* |
| 2 | * caam - Freescale FSL CAAM support for Public Key Cryptography descriptors |
| 3 | * |
| 4 | * Copyright 2016 Freescale Semiconductor, Inc. |
| 5 | * |
| 6 | * There is no Shared Descriptor for PKC so that the Job Descriptor must carry |
| 7 | * all the desired key parameters, input and output pointers. |
| 8 | */ |
| 9 | |
| 10 | #ifndef _PKC_DESC_H_ |
| 11 | #define _PKC_DESC_H_ |
| 12 | #include "compat.h" |
| 13 | #include "pdb.h" |
| 14 | |
| 15 | /** |
| 16 | * caam_rsa_key - CAAM RSA key structure. Keys are allocated in DMA zone. |
| 17 | * @n : RSA modulus raw byte stream |
| 18 | * @e : RSA public exponent raw byte stream |
| 19 | * @d : RSA private exponent raw byte stream |
| 20 | * @n_sz : length in bytes of RSA modulus n |
| 21 | * @e_sz : length in bytes of RSA public exponent |
| 22 | * @d_sz : length in bytes of RSA private exponent |
| 23 | */ |
| 24 | struct caam_rsa_key { |
| 25 | u8 *n; |
| 26 | u8 *e; |
| 27 | u8 *d; |
| 28 | size_t n_sz; |
| 29 | size_t e_sz; |
| 30 | size_t d_sz; |
| 31 | }; |
| 32 | |
| 33 | /** |
| 34 | * caam_rsa_ctx - per session context. |
| 35 | * @key : RSA key in DMA zone |
| 36 | * @dev : device structure |
| 37 | */ |
| 38 | struct caam_rsa_ctx { |
| 39 | struct caam_rsa_key key; |
| 40 | struct device *dev; |
| 41 | }; |
| 42 | |
| 43 | /** |
| 44 | * rsa_edesc - s/w-extended rsa descriptor |
| 45 | * @src_nents : number of segments in input scatterlist |
| 46 | * @dst_nents : number of segments in output scatterlist |
| 47 | * @sec4_sg_bytes : length of h/w link table |
| 48 | * @sec4_sg_dma : dma address of h/w link table |
| 49 | * @sec4_sg : pointer to h/w link table |
| 50 | * @pdb : specific RSA Protocol Data Block (PDB) |
| 51 | * @hw_desc : descriptor followed by link tables if any |
| 52 | */ |
| 53 | struct rsa_edesc { |
| 54 | int src_nents; |
| 55 | int dst_nents; |
| 56 | int sec4_sg_bytes; |
| 57 | dma_addr_t sec4_sg_dma; |
| 58 | struct sec4_sg_entry *sec4_sg; |
| 59 | union { |
| 60 | struct rsa_pub_pdb pub; |
| 61 | struct rsa_priv_f1_pdb priv_f1; |
| 62 | } pdb; |
| 63 | u32 hw_desc[]; |
| 64 | }; |
| 65 | |
| 66 | /* Descriptor construction primitives. */ |
| 67 | void init_rsa_pub_desc(u32 *desc, struct rsa_pub_pdb *pdb); |
| 68 | void init_rsa_priv_f1_desc(u32 *desc, struct rsa_priv_f1_pdb *pdb); |
| 69 | |
| 70 | #endif |