drivers/crypto/caam/pkc_desc.c

   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 #include "caampkc.h"
  10 #include "desc_constr.h"
  11
  12 /* Descriptor for RSA Public operation */
  13 void init_rsa_pub_desc(u32 *desc, struct rsa_pub_pdb *pdb)
  14 {
  15         init_job_desc_pdb(desc, 0, sizeof(*pdb));
  16         append_cmd(desc, pdb->sgf);
  17         append_ptr(desc, pdb->f_dma);
  18         append_ptr(desc, pdb->g_dma);
  19         append_ptr(desc, pdb->n_dma);
  20         append_ptr(desc, pdb->e_dma);
  21         append_cmd(desc, pdb->f_len);
  22         append_operation(desc, OP_TYPE_UNI_PROTOCOL | OP_PCLID_RSAENC_PUBKEY);
  23 }
  24
  25 /* Descriptor for RSA Private operation - Private Key Form #1 */
  26 void init_rsa_priv_f1_desc(u32 *desc, struct rsa_priv_f1_pdb *pdb)
  27 {
  28         init_job_desc_pdb(desc, 0, sizeof(*pdb));
  29         append_cmd(desc, pdb->sgf);
  30         append_ptr(desc, pdb->g_dma);
  31         append_ptr(desc, pdb->f_dma);
  32         append_ptr(desc, pdb->n_dma);
  33         append_ptr(desc, pdb->d_dma);
  34         append_operation(desc, OP_TYPE_UNI_PROTOCOL | OP_PCLID_RSADEC_PRVKEY |
  35                          RSA_PRIV_KEY_FRM_1);
  36 }