1// SPDX-License-Identifier: GPL-2.0
2/*
3 * caam - Freescale FSL CAAM support for Public Key Cryptography descriptors
4 *
5 * Copyright 2016 Freescale Semiconductor, Inc.
6 *
7 * There is no Shared Descriptor for PKC so that the Job Descriptor must carry
8 * all the desired key parameters, input and output pointers.
9 */
10#include "caampkc.h"
11#include "desc_constr.h"
12
13/* Descriptor for RSA Public operation */
14void init_rsa_pub_desc(u32 *desc, struct rsa_pub_pdb *pdb)
15{
16 init_job_desc_pdb(desc, options: 0, SIZEOF_RSA_PUB_PDB);
17 append_cmd(desc, command: pdb->sgf);
18 append_ptr(desc, ptr: pdb->f_dma);
19 append_ptr(desc, ptr: pdb->g_dma);
20 append_ptr(desc, ptr: pdb->n_dma);
21 append_ptr(desc, ptr: pdb->e_dma);
22 append_cmd(desc, command: pdb->f_len);
23 append_operation(desc, OP_TYPE_UNI_PROTOCOL | OP_PCLID_RSAENC_PUBKEY);
24}
25
26/* Descriptor for RSA Private operation - Private Key Form #1 */
27void init_rsa_priv_f1_desc(u32 *desc, struct rsa_priv_f1_pdb *pdb)
28{
29 init_job_desc_pdb(desc, options: 0, SIZEOF_RSA_PRIV_F1_PDB);
30 append_cmd(desc, command: pdb->sgf);
31 append_ptr(desc, ptr: pdb->g_dma);
32 append_ptr(desc, ptr: pdb->f_dma);
33 append_ptr(desc, ptr: pdb->n_dma);
34 append_ptr(desc, ptr: pdb->d_dma);
35 append_operation(desc, OP_TYPE_UNI_PROTOCOL | OP_PCLID_RSADEC_PRVKEY |
36 RSA_PRIV_KEY_FRM_1);
37}
38
39/* Descriptor for RSA Private operation - Private Key Form #2 */
40void init_rsa_priv_f2_desc(u32 *desc, struct rsa_priv_f2_pdb *pdb)
41{
42 init_job_desc_pdb(desc, options: 0, SIZEOF_RSA_PRIV_F2_PDB);
43 append_cmd(desc, command: pdb->sgf);
44 append_ptr(desc, ptr: pdb->g_dma);
45 append_ptr(desc, ptr: pdb->f_dma);
46 append_ptr(desc, ptr: pdb->d_dma);
47 append_ptr(desc, ptr: pdb->p_dma);
48 append_ptr(desc, ptr: pdb->q_dma);
49 append_ptr(desc, ptr: pdb->tmp1_dma);
50 append_ptr(desc, ptr: pdb->tmp2_dma);
51 append_cmd(desc, command: pdb->p_q_len);
52 append_operation(desc, OP_TYPE_UNI_PROTOCOL | OP_PCLID_RSADEC_PRVKEY |
53 RSA_PRIV_KEY_FRM_2);
54}
55
56/* Descriptor for RSA Private operation - Private Key Form #3 */
57void init_rsa_priv_f3_desc(u32 *desc, struct rsa_priv_f3_pdb *pdb)
58{
59 init_job_desc_pdb(desc, options: 0, SIZEOF_RSA_PRIV_F3_PDB);
60 append_cmd(desc, command: pdb->sgf);
61 append_ptr(desc, ptr: pdb->g_dma);
62 append_ptr(desc, ptr: pdb->f_dma);
63 append_ptr(desc, ptr: pdb->c_dma);
64 append_ptr(desc, ptr: pdb->p_dma);
65 append_ptr(desc, ptr: pdb->q_dma);
66 append_ptr(desc, ptr: pdb->dp_dma);
67 append_ptr(desc, ptr: pdb->dq_dma);
68 append_ptr(desc, ptr: pdb->tmp1_dma);
69 append_ptr(desc, ptr: pdb->tmp2_dma);
70 append_cmd(desc, command: pdb->p_q_len);
71 append_operation(desc, OP_TYPE_UNI_PROTOCOL | OP_PCLID_RSADEC_PRVKEY |
72 RSA_PRIV_KEY_FRM_3);
73}
74

source code of linux/drivers/crypto/caam/pkc_desc.c