drivers/crypto/caam/pkc_desc.c

   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 */
  14 void init_rsa_pub_desc(u32 *desc, struct rsa_pub_pdb *pdb)
  15 {
  16         init_job_desc_pdb(desc, 0, SIZEOF_RSA_PUB_PDB);
  17         append_cmd(desc, pdb->sgf);
  18         append_ptr(desc, pdb->f_dma);
  19         append_ptr(desc, pdb->g_dma);
  20         append_ptr(desc, pdb->n_dma);
  21         append_ptr(desc, pdb->e_dma);
  22         append_cmd(desc, 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 */
  27 void init_rsa_priv_f1_desc(u32 *desc, struct rsa_priv_f1_pdb *pdb)
  28 {
  29         init_job_desc_pdb(desc, 0, SIZEOF_RSA_PRIV_F1_PDB);
  30         append_cmd(desc, pdb->sgf);
  31         append_ptr(desc, pdb->g_dma);
  32         append_ptr(desc, pdb->f_dma);
  33         append_ptr(desc, pdb->n_dma);
  34         append_ptr(desc, 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 */
  40 void init_rsa_priv_f2_desc(u32 *desc, struct rsa_priv_f2_pdb *pdb)
  41 {
  42         init_job_desc_pdb(desc, 0, SIZEOF_RSA_PRIV_F2_PDB);
  43         append_cmd(desc, pdb->sgf);
  44         append_ptr(desc, pdb->g_dma);
  45         append_ptr(desc, pdb->f_dma);
  46         append_ptr(desc, pdb->d_dma);
  47         append_ptr(desc, pdb->p_dma);
  48         append_ptr(desc, pdb->q_dma);
  49         append_ptr(desc, pdb->tmp1_dma);
  50         append_ptr(desc, pdb->tmp2_dma);
  51         append_cmd(desc, 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 */
  57 void init_rsa_priv_f3_desc(u32 *desc, struct rsa_priv_f3_pdb *pdb)
  58 {
  59         init_job_desc_pdb(desc, 0, SIZEOF_RSA_PRIV_F3_PDB);
  60         append_cmd(desc, pdb->sgf);
  61         append_ptr(desc, pdb->g_dma);
  62         append_ptr(desc, pdb->f_dma);
  63         append_ptr(desc, pdb->c_dma);
  64         append_ptr(desc, pdb->p_dma);
  65         append_ptr(desc, pdb->q_dma);
  66         append_ptr(desc, pdb->dp_dma);
  67         append_ptr(desc, pdb->dq_dma);
  68         append_ptr(desc, pdb->tmp1_dma);
  69         append_ptr(desc, pdb->tmp2_dma);
  70         append_cmd(desc, pdb->p_q_len);
  71         append_operation(desc, OP_TYPE_UNI_PROTOCOL | OP_PCLID_RSADEC_PRVKEY |
  72                          RSA_PRIV_KEY_FRM_3);
  73 }