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   1 /*
   2  *  linux/drivers/s390/crypto/zcrypt_pcicc.h
   3  *
   4  *  zcrypt 2.1.0
   5  *
   6  *  Copyright (C)  2001, 2006 IBM Corporation
   7  *  Author(s): Robert Burroughs
   8  *             Eric Rossman (edrossma@us.ibm.com)
   9  *
  10  *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
  11  *  Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2, or (at your option)
  16  * any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  26  */
  27
  28 #ifndef _ZCRYPT_PCICC_H_
  29 #define _ZCRYPT_PCICC_H_
  30
  31 /**
  32  * The type 6 message family is associated with PCICC or PCIXCC cards.
  33  *
  34  * It contains a message header followed by a CPRB, both of which
  35  * are described below.
  36  *
  37  * Note that all reserved fields must be zeroes.
  38  */
  39 struct type6_hdr {
  40         unsigned char reserved1;        /* 0x00                         */
  41         unsigned char type;             /* 0x06                         */
  42         unsigned char reserved2[2];     /* 0x0000                       */
  43         unsigned char right[4];         /* 0x00000000                   */
  44         unsigned char reserved3[2];     /* 0x0000                       */
  45         unsigned char reserved4[2];     /* 0x0000                       */
  46         unsigned char apfs[4];          /* 0x00000000                   */
  47         unsigned int  offset1;          /* 0x00000058 (offset to CPRB)  */
  48         unsigned int  offset2;          /* 0x00000000                   */
  49         unsigned int  offset3;          /* 0x00000000                   */
  50         unsigned int  offset4;          /* 0x00000000                   */
  51         unsigned char agent_id[16];     /* PCICC:                       */
  52                                         /*    0x0100                    */
  53                                         /*    0x4343412d4150504c202020  */
  54                                         /*    0x010101                  */
  55                                         /* PCIXCC:                      */
  56                                         /*    0x4341000000000000        */
  57                                         /*    0x0000000000000000        */
  58         unsigned char rqid[2];          /* rqid.  internal to 603       */
  59         unsigned char reserved5[2];     /* 0x0000                       */
  60         unsigned char function_code[2]; /* for PKD, 0x5044 (ascii 'PD') */
  61         unsigned char reserved6[2];     /* 0x0000                       */
  62         unsigned int  ToCardLen1;       /* (request CPRB len + 3) & -4  */
  63         unsigned int  ToCardLen2;       /* db len 0x00000000 for PKD    */
  64         unsigned int  ToCardLen3;       /* 0x00000000                   */
  65         unsigned int  ToCardLen4;       /* 0x00000000                   */
  66         unsigned int  FromCardLen1;     /* response buffer length       */
  67         unsigned int  FromCardLen2;     /* db len 0x00000000 for PKD    */
  68         unsigned int  FromCardLen3;     /* 0x00000000                   */
  69         unsigned int  FromCardLen4;     /* 0x00000000                   */
  70 } __attribute__((packed));
  71
  72 /**
  73  * CPRB
  74  *        Note that all shorts, ints and longs are little-endian.
  75  *        All pointer fields are 32-bits long, and mean nothing
  76  *
  77  *        A request CPRB is followed by a request_parameter_block.
  78  *
  79  *        The request (or reply) parameter block is organized thus:
  80  *          function code
  81  *          VUD block
  82  *          key block
  83  */
  84 struct CPRB {
  85         unsigned short cprb_len;        /* CPRB length                   */
  86         unsigned char cprb_ver_id;      /* CPRB version id.              */
  87         unsigned char pad_000;          /* Alignment pad byte.           */
  88         unsigned char srpi_rtcode[4];   /* SRPI return code LELONG       */
  89         unsigned char srpi_verb;        /* SRPI verb type                */
  90         unsigned char flags;            /* flags                         */
  91         unsigned char func_id[2];       /* function id                   */
  92         unsigned char checkpoint_flag;  /*                               */
  93         unsigned char resv2;            /* reserved                      */
  94         unsigned short req_parml;       /* request parameter buffer      */
  95                                         /* length 16-bit little endian   */
  96         unsigned char req_parmp[4];     /* request parameter buffer      *
  97                                          * pointer (means nothing: the   *
  98                                          * parameter buffer follows      *
  99                                          * the CPRB).                    */
 100         unsigned char req_datal[4];     /* request data buffer           */
 101                                         /* length         ULELONG        */
 102         unsigned char req_datap[4];     /* request data buffer           */
 103                                         /* pointer                       */
 104         unsigned short rpl_parml;       /* reply  parameter buffer       */
 105                                         /* length 16-bit little endian   */
 106         unsigned char pad_001[2];       /* Alignment pad bytes. ULESHORT */
 107         unsigned char rpl_parmp[4];     /* reply parameter buffer        *
 108                                          * pointer (means nothing: the   *
 109                                          * parameter buffer follows      *
 110                                          * the CPRB).                    */
 111         unsigned char rpl_datal[4];     /* reply data buffer len ULELONG */
 112         unsigned char rpl_datap[4];     /* reply data buffer             */
 113                                         /* pointer                       */
 114         unsigned short ccp_rscode;      /* server reason code   ULESHORT */
 115         unsigned short ccp_rtcode;      /* server return code   ULESHORT */
 116         unsigned char repd_parml[2];    /* replied parameter len ULESHORT*/
 117         unsigned char mac_data_len[2];  /* Mac Data Length      ULESHORT */
 118         unsigned char repd_datal[4];    /* replied data length  ULELONG  */
 119         unsigned char req_pc[2];        /* PC identifier                 */
 120         unsigned char res_origin[8];    /* resource origin               */
 121         unsigned char mac_value[8];     /* Mac Value                     */
 122         unsigned char logon_id[8];      /* Logon Identifier              */
 123         unsigned char usage_domain[2];  /* cdx                           */
 124         unsigned char resv3[18];        /* reserved for requestor        */
 125         unsigned short svr_namel;       /* server name length  ULESHORT  */
 126         unsigned char svr_name[8];      /* server name                   */
 127 } __attribute__((packed));
 128
 129 /**
 130  * The type 86 message family is associated with PCICC and PCIXCC cards.
 131  *
 132  * It contains a message header followed by a CPRB.  The CPRB is
 133  * the same as the request CPRB, which is described above.
 134  *
 135  * If format is 1, an error condition exists and no data beyond
 136  * the 8-byte message header is of interest.
 137  *
 138  * The non-error message is shown below.
 139  *
 140  * Note that all reserved fields must be zeroes.
 141  */
 142 struct type86_hdr {
 143         unsigned char reserved1;        /* 0x00                         */
 144         unsigned char type;             /* 0x86                         */
 145         unsigned char format;           /* 0x01 (error) or 0x02 (ok)    */
 146         unsigned char reserved2;        /* 0x00                         */
 147         unsigned char reply_code;       /* reply code (see above)       */
 148         unsigned char reserved3[3];     /* 0x000000                     */
 149 } __attribute__((packed));
 150
 151 #define TYPE86_RSP_CODE 0x86
 152 #define TYPE86_FMT2     0x02
 153
 154 struct type86_fmt2_ext {
 155         unsigned char     reserved[4];  /* 0x00000000                   */
 156         unsigned char     apfs[4];      /* final status                 */
 157         unsigned int      count1;       /* length of CPRB + parameters  */
 158         unsigned int      offset1;      /* offset to CPRB               */
 159         unsigned int      count2;       /* 0x00000000                   */
 160         unsigned int      offset2;      /* db offset 0x00000000 for PKD */
 161         unsigned int      count3;       /* 0x00000000                   */
 162         unsigned int      offset3;      /* 0x00000000                   */
 163         unsigned int      count4;       /* 0x00000000                   */
 164         unsigned int      offset4;      /* 0x00000000                   */
 165 } __attribute__((packed));
 166
 167 struct function_and_rules_block {
 168         unsigned char function_code[2];
 169         unsigned short ulen;
 170         unsigned char only_rule[8];
 171 } __attribute__((packed));
 172
 173 int zcrypt_pcicc_init(void);
 174 void zcrypt_pcicc_exit(void);
 175
 176 #endif /* _ZCRYPT_PCICC_H_ */