1/* 2 * zcrypt 2.1.0 3 * 4 * Copyright IBM Corp. 2001, 2012 5 * Author(s): Robert Burroughs 6 * Eric Rossman (edrossma@us.ibm.com) 7 * 8 * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) 9 * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> 10 * MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com> 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2, or (at your option) 15 * any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 25 */ 26 27#ifndef _ZCRYPT_MSGTYPE6_H_ 28#define _ZCRYPT_MSGTYPE6_H_ 29 30#include <asm/zcrypt.h> 31 32#define MSGTYPE06_NAME "zcrypt_msgtype6" 33#define MSGTYPE06_VARIANT_DEFAULT 0 34#define MSGTYPE06_VARIANT_NORNG 1 35#define MSGTYPE06_VARIANT_EP11 2 36 37#define MSGTYPE06_MAX_MSG_SIZE (12*1024) 38 39/** 40 * The type 6 message family is associated with PCICC or PCIXCC cards. 41 * 42 * It contains a message header followed by a CPRB, both of which 43 * are described below. 44 * 45 * Note that all reserved fields must be zeroes. 46 */ 47struct type6_hdr { 48 unsigned char reserved1; /* 0x00 */ 49 unsigned char type; /* 0x06 */ 50 unsigned char reserved2[2]; /* 0x0000 */ 51 unsigned char right[4]; /* 0x00000000 */ 52 unsigned char reserved3[2]; /* 0x0000 */ 53 unsigned char reserved4[2]; /* 0x0000 */ 54 unsigned char apfs[4]; /* 0x00000000 */ 55 unsigned int offset1; /* 0x00000058 (offset to CPRB) */ 56 unsigned int offset2; /* 0x00000000 */ 57 unsigned int offset3; /* 0x00000000 */ 58 unsigned int offset4; /* 0x00000000 */ 59 unsigned char agent_id[16]; /* PCICC: */ 60 /* 0x0100 */ 61 /* 0x4343412d4150504c202020 */ 62 /* 0x010101 */ 63 /* PCIXCC: */ 64 /* 0x4341000000000000 */ 65 /* 0x0000000000000000 */ 66 unsigned char rqid[2]; /* rqid. internal to 603 */ 67 unsigned char reserved5[2]; /* 0x0000 */ 68 unsigned char function_code[2]; /* for PKD, 0x5044 (ascii 'PD') */ 69 unsigned char reserved6[2]; /* 0x0000 */ 70 unsigned int ToCardLen1; /* (request CPRB len + 3) & -4 */ 71 unsigned int ToCardLen2; /* db len 0x00000000 for PKD */ 72 unsigned int ToCardLen3; /* 0x00000000 */ 73 unsigned int ToCardLen4; /* 0x00000000 */ 74 unsigned int FromCardLen1; /* response buffer length */ 75 unsigned int FromCardLen2; /* db len 0x00000000 for PKD */ 76 unsigned int FromCardLen3; /* 0x00000000 */ 77 unsigned int FromCardLen4; /* 0x00000000 */ 78} __packed; 79 80/** 81 * The type 86 message family is associated with PCICC and PCIXCC cards. 82 * 83 * It contains a message header followed by a CPRB. The CPRB is 84 * the same as the request CPRB, which is described above. 85 * 86 * If format is 1, an error condition exists and no data beyond 87 * the 8-byte message header is of interest. 88 * 89 * The non-error message is shown below. 90 * 91 * Note that all reserved fields must be zeroes. 92 */ 93struct type86_hdr { 94 unsigned char reserved1; /* 0x00 */ 95 unsigned char type; /* 0x86 */ 96 unsigned char format; /* 0x01 (error) or 0x02 (ok) */ 97 unsigned char reserved2; /* 0x00 */ 98 unsigned char reply_code; /* reply code (see above) */ 99 unsigned char reserved3[3]; /* 0x000000 */ 100} __packed; 101 102#define TYPE86_RSP_CODE 0x86 103#define TYPE87_RSP_CODE 0x87 104#define TYPE86_FMT2 0x02 105 106struct type86_fmt2_ext { 107 unsigned char reserved[4]; /* 0x00000000 */ 108 unsigned char apfs[4]; /* final status */ 109 unsigned int count1; /* length of CPRB + parameters */ 110 unsigned int offset1; /* offset to CPRB */ 111 unsigned int count2; /* 0x00000000 */ 112 unsigned int offset2; /* db offset 0x00000000 for PKD */ 113 unsigned int count3; /* 0x00000000 */ 114 unsigned int offset3; /* 0x00000000 */ 115 unsigned int count4; /* 0x00000000 */ 116 unsigned int offset4; /* 0x00000000 */ 117} __packed; 118 119/** 120 * Prepare a type6 CPRB message for random number generation 121 * 122 * @ap_dev: AP device pointer 123 * @ap_msg: pointer to AP message 124 */ 125static inline void rng_type6CPRB_msgX(struct ap_device *ap_dev, 126 struct ap_message *ap_msg, 127 unsigned random_number_length) 128{ 129 struct { 130 struct type6_hdr hdr; 131 struct CPRBX cprbx; 132 char function_code[2]; 133 short int rule_length; 134 char rule[8]; 135 short int verb_length; 136 short int key_length; 137 } __packed * msg = ap_msg->message; 138 static struct type6_hdr static_type6_hdrX = { 139 .type = 0x06, 140 .offset1 = 0x00000058, 141 .agent_id = {'C', 'A'}, 142 .function_code = {'R', 'L'}, 143 .ToCardLen1 = sizeof(*msg) - sizeof(msg->hdr), 144 .FromCardLen1 = sizeof(*msg) - sizeof(msg->hdr), 145 }; 146 static struct CPRBX local_cprbx = { 147 .cprb_len = 0x00dc, 148 .cprb_ver_id = 0x02, 149 .func_id = {0x54, 0x32}, 150 .req_parml = sizeof(*msg) - sizeof(msg->hdr) - 151 sizeof(msg->cprbx), 152 .rpl_msgbl = sizeof(*msg) - sizeof(msg->hdr), 153 }; 154 155 msg->hdr = static_type6_hdrX; 156 msg->hdr.FromCardLen2 = random_number_length, 157 msg->cprbx = local_cprbx; 158 msg->cprbx.rpl_datal = random_number_length, 159 msg->cprbx.domain = AP_QID_QUEUE(ap_dev->qid); 160 memcpy(msg->function_code, msg->hdr.function_code, 0x02); 161 msg->rule_length = 0x0a; 162 memcpy(msg->rule, "RANDOM ", 8); 163 msg->verb_length = 0x02; 164 msg->key_length = 0x02; 165 ap_msg->length = sizeof(*msg); 166} 167 168int zcrypt_msgtype6_init(void); 169void zcrypt_msgtype6_exit(void); 170 171#endif /* _ZCRYPT_MSGTYPE6_H_ */ 172