target/linux/generic/files/crypto/ocf/talitos/talitos_soft.h

   1 /*
   2  * Freescale SEC data structures for integration with ocf-linux
   3  *
   4  * Copyright (c) 2006 Freescale Semiconductor, Inc.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 /*
  31  * paired descriptor and associated crypto operation
  32  */
  33 struct desc_cryptop_pair {
  34         struct talitos_desc     cf_desc;        /* descriptor ptr */
  35         struct cryptop          *cf_crp;        /* cryptop ptr */
  36 };
  37
  38 /*
  39  * Holds data specific to a single talitos device.
  40  */
  41 struct talitos_softc {
  42         softc_device_decl       sc_cdev;
  43         struct platform_device  *sc_dev;        /* device backpointer */
  44         ocf_iomem_t             sc_base_addr;
  45         int                     sc_irq;
  46         int                     sc_num;         /* if we have multiple chips */
  47         int32_t                 sc_cid;         /* crypto tag */
  48         u64                     sc_chiprev;     /* major/minor chip revision */
  49         int                     sc_nsessions;
  50         struct talitos_session  *sc_sessions;
  51         int                     sc_num_channels;/* number of crypto channels */
  52         int                     sc_chfifo_len;  /* channel fetch fifo len */
  53         int                     sc_exec_units;  /* execution units mask */
  54         int                     sc_desc_types;  /* descriptor types mask */
  55         /*
  56          * mutual exclusion for intra-channel resources, e.g. fetch fifos
  57          * the last entry is a meta-channel lock used by the channel scheduler
  58          */
  59         spinlock_t              *sc_chnfifolock;
  60         /* sc_chnlastalgo contains last algorithm for that channel */
  61         int                     *sc_chnlastalg;
  62         /* sc_chnfifo holds pending descriptor--crypto operation pairs */
  63         struct desc_cryptop_pair        **sc_chnfifo;
  64 };
  65
  66 struct talitos_session {
  67         u_int32_t       ses_used;
  68         u_int32_t       ses_klen;               /* key length in bits */
  69         u_int32_t       ses_key[8];             /* DES/3DES/AES key */
  70         u_int32_t       ses_hmac[5];            /* hmac inner state */
  71         u_int32_t       ses_hmac_len;           /* hmac length */
  72         u_int32_t       ses_mlen;               /* desired hash result len (12=ipsec or 16) */
  73 };
  74
  75 #define TALITOS_SESSION(sid)    ((sid) & 0x0fffffff)
  76 #define TALITOS_SID(crd, sesn)  (((crd) << 28) | ((sesn) & 0x0fffffff))