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8c419778 TA |
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 |