LCOV - code coverage report
Current view: top level - drivers/common/dpaax/caamflib/desc - common.h (source / functions) Hit Total Coverage
Test: Code coverage Lines: 0 10 0.0 %
Date: 2025-01-02 22:41:34 Functions: 0 1 0.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 6 0.0 %

           Branch data     Line data    Source code
       1                 :            : /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
       2                 :            :  *
       3                 :            :  * Copyright 2008-2016 Freescale Semiconductor Inc.
       4                 :            :  * Copyright 2016 NXP
       5                 :            :  *
       6                 :            :  */
       7                 :            : 
       8                 :            : #ifndef __DESC_COMMON_H__
       9                 :            : #define __DESC_COMMON_H__
      10                 :            : 
      11                 :            : #include "rta.h"
      12                 :            : 
      13                 :            : /**
      14                 :            :  * DOC: Shared Descriptor Constructors - shared structures
      15                 :            :  *
      16                 :            :  * Data structures shared between algorithm, protocol implementations.
      17                 :            :  */
      18                 :            : 
      19                 :            : /**
      20                 :            :  * struct alginfo - Container for algorithm details
      21                 :            :  * @algtype: algorithm selector; for valid values, see documentation of the
      22                 :            :  *           functions where it is used.
      23                 :            :  * @keylen: length of the provided algorithm key, in bytes
      24                 :            :  * @key: address where algorithm key resides; virtual address if key_type is
      25                 :            :  *       RTA_DATA_IMM, physical (bus) address if key_type is RTA_DATA_PTR or
      26                 :            :  *       RTA_DATA_IMM_DMA.
      27                 :            :  * @key_enc_flags: key encryption flags; see encrypt_flags parameter of KEY
      28                 :            :  *                 command for valid values.
      29                 :            :  * @key_type: enum rta_data_type
      30                 :            :  * @algmode: algorithm mode selector; for valid values, see documentation of the
      31                 :            :  *           functions where it is used.
      32                 :            :  */
      33                 :            : struct alginfo {
      34                 :            :         uint32_t algtype;
      35                 :            :         uint32_t keylen;
      36                 :            :         uint64_t key;
      37                 :            :         uint32_t key_enc_flags;
      38                 :            :         enum rta_data_type key_type;
      39                 :            :         uint16_t algmode;
      40                 :            : };
      41                 :            : 
      42                 :            : #define INLINE_KEY(alginfo)     inline_flags(alginfo->key_type)
      43                 :            : 
      44                 :            : /**
      45                 :            :  * rta_inline_query() - Provide indications on which data items can be inlined
      46                 :            :  *                      and which shall be referenced in a shared descriptor.
      47                 :            :  * @sd_base_len: Shared descriptor base length - bytes consumed by the commands,
      48                 :            :  *               excluding the data items to be inlined (or corresponding
      49                 :            :  *               pointer if an item is not inlined). Each cnstr_* function that
      50                 :            :  *               generates descriptors should have a define mentioning
      51                 :            :  *               corresponding length.
      52                 :            :  * @jd_len: Maximum length of the job descriptor(s) that will be used
      53                 :            :  *          together with the shared descriptor.
      54                 :            :  * @data_len: Array of lengths of the data items trying to be inlined
      55                 :            :  * @inl_mask: 32bit mask with bit x = 1 if data item x can be inlined, 0
      56                 :            :  *            otherwise.
      57                 :            :  * @count: Number of data items (size of @data_len array); must be <= 32
      58                 :            :  *
      59                 :            :  * Return: 0 if data can be inlined / referenced, negative value if not. If 0,
      60                 :            :  *         check @inl_mask for details.
      61                 :            :  */
      62                 :            : static inline int
      63                 :          0 : rta_inline_query(unsigned int sd_base_len,
      64                 :            :                  unsigned int jd_len,
      65                 :            :                  unsigned int *data_len,
      66                 :            :                  uint32_t *inl_mask,
      67                 :            :                  unsigned int count)
      68                 :            : {
      69                 :          0 :         int rem_bytes = (int)(CAAM_DESC_BYTES_MAX - sd_base_len - jd_len);
      70                 :            :         unsigned int i;
      71                 :            : 
      72                 :          0 :         *inl_mask = 0;
      73         [ #  # ]:          0 :         for (i = 0; (i < count) && (rem_bytes > 0); i++) {
      74                 :          0 :                 if (rem_bytes - (int)(data_len[i] +
      75         [ #  # ]:          0 :                         (count - i - 1) * CAAM_PTR_SZ) >= 0) {
      76                 :          0 :                         rem_bytes -= data_len[i];
      77                 :          0 :                         *inl_mask |= (1 << i);
      78                 :            :                 } else {
      79                 :          0 :                         rem_bytes -= CAAM_PTR_SZ;
      80                 :            :                 }
      81                 :            :         }
      82                 :            : 
      83         [ #  # ]:          0 :         return (rem_bytes >= 0) ? 0 : -1;
      84                 :            : }
      85                 :            : 
      86                 :            : /**
      87                 :            :  * struct protcmd - Container for Protocol Operation Command fields
      88                 :            :  * @optype: command type
      89                 :            :  * @protid: protocol Identifier
      90                 :            :  * @protinfo: protocol Information
      91                 :            :  */
      92                 :            : struct protcmd {
      93                 :            :         uint32_t optype;
      94                 :            :         uint32_t protid;
      95                 :            :         uint16_t protinfo;
      96                 :            : };
      97                 :            : 
      98                 :            : #endif /* __DESC_COMMON_H__ */

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