| 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)) |
| 77 | |
