1 /* 2 * zcrypt 2.1.0 3 * 4 * Copyright IBM Corp. 2001, 2006 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 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2, or (at your option) 14 * any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 24 */ 25 26 #ifndef _ZCRYPT_ERROR_H_ 27 #define _ZCRYPT_ERROR_H_ 28 29 #include <linux/atomic.h> 30 #include "zcrypt_debug.h" 31 #include "zcrypt_api.h" 32 33 /** 34 * Reply Messages 35 * 36 * Error reply messages are of two types: 37 * 82: Error (see below) 38 * 88: Error (see below) 39 * Both type 82 and type 88 have the same structure in the header. 40 * 41 * Request reply messages are of three known types: 42 * 80: Reply from a Type 50 Request (see CEX2A-RELATED STRUCTS) 43 * 84: Reply from a Type 4 Request (see PCICA-RELATED STRUCTS) 44 * 86: Reply from a Type 6 Request (see PCICC/PCIXCC/CEX2C-RELATED STRUCTS) 45 * 46 */ 47 struct error_hdr { 48 unsigned char reserved1; /* 0x00 */ 49 unsigned char type; /* 0x82 or 0x88 */ 50 unsigned char reserved2[2]; /* 0x0000 */ 51 unsigned char reply_code; /* reply code */ 52 unsigned char reserved3[3]; /* 0x000000 */ 53 }; 54 55 #define TYPE82_RSP_CODE 0x82 56 #define TYPE88_RSP_CODE 0x88 57 58 #define REP82_ERROR_MACHINE_FAILURE 0x10 59 #define REP82_ERROR_PREEMPT_FAILURE 0x12 60 #define REP82_ERROR_CHECKPT_FAILURE 0x14 61 #define REP82_ERROR_MESSAGE_TYPE 0x20 62 #define REP82_ERROR_INVALID_COMM_CD 0x21 /* Type 84 */ 63 #define REP82_ERROR_INVALID_MSG_LEN 0x23 64 #define REP82_ERROR_RESERVD_FIELD 0x24 /* was 0x50 */ 65 #define REP82_ERROR_FORMAT_FIELD 0x29 66 #define REP82_ERROR_INVALID_COMMAND 0x30 67 #define REP82_ERROR_MALFORMED_MSG 0x40 68 #define REP82_ERROR_RESERVED_FIELDO 0x50 /* old value */ 69 #define REP82_ERROR_WORD_ALIGNMENT 0x60 70 #define REP82_ERROR_MESSAGE_LENGTH 0x80 71 #define REP82_ERROR_OPERAND_INVALID 0x82 72 #define REP82_ERROR_OPERAND_SIZE 0x84 73 #define REP82_ERROR_EVEN_MOD_IN_OPND 0x85 74 #define REP82_ERROR_RESERVED_FIELD 0x88 75 #define REP82_ERROR_TRANSPORT_FAIL 0x90 76 #define REP82_ERROR_PACKET_TRUNCATED 0xA0 77 #define REP82_ERROR_ZERO_BUFFER_LEN 0xB0 78 79 #define REP88_ERROR_MODULE_FAILURE 0x10 80 81 #define REP88_ERROR_MESSAGE_TYPE 0x20 82 #define REP88_ERROR_MESSAGE_MALFORMD 0x22 83 #define REP88_ERROR_MESSAGE_LENGTH 0x23 84 #define REP88_ERROR_RESERVED_FIELD 0x24 85 #define REP88_ERROR_KEY_TYPE 0x34 86 #define REP88_ERROR_INVALID_KEY 0x82 /* CEX2A */ 87 #define REP88_ERROR_OPERAND 0x84 /* CEX2A */ 88 #define REP88_ERROR_OPERAND_EVEN_MOD 0x85 /* CEX2A */ 89 90 static inline int convert_error(struct zcrypt_device *zdev, 91 struct ap_message *reply) 92 { 93 struct error_hdr *ehdr = reply->message; 94 95 switch (ehdr->reply_code) { 96 case REP82_ERROR_OPERAND_INVALID: 97 case REP82_ERROR_OPERAND_SIZE: 98 case REP82_ERROR_EVEN_MOD_IN_OPND: 99 case REP88_ERROR_MESSAGE_MALFORMD: 100 // REP88_ERROR_INVALID_KEY // '82' CEX2A 101 // REP88_ERROR_OPERAND // '84' CEX2A 102 // REP88_ERROR_OPERAND_EVEN_MOD // '85' CEX2A 103 /* Invalid input data. */ 104 return -EINVAL; 105 case REP82_ERROR_MESSAGE_TYPE: 106 // REP88_ERROR_MESSAGE_TYPE // '20' CEX2A 107 /* 108 * To sent a message of the wrong type is a bug in the 109 * device driver. Send error msg, disable the device 110 * and then repeat the request. 111 */ 112 atomic_set(&zcrypt_rescan_req, 1); 113 zdev->online = 0; 114 pr_err("Cryptographic device %x failed and was set offline\n", 115 zdev->ap_dev->qid); 116 ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d", 117 zdev->ap_dev->qid, zdev->online, ehdr->reply_code); 118 return -EAGAIN; 119 case REP82_ERROR_TRANSPORT_FAIL: 120 case REP82_ERROR_MACHINE_FAILURE: 121 // REP88_ERROR_MODULE_FAILURE // '10' CEX2A 122 /* If a card fails disable it and repeat the request. */ 123 atomic_set(&zcrypt_rescan_req, 1); 124 zdev->online = 0; 125 pr_err("Cryptographic device %x failed and was set offline\n", 126 zdev->ap_dev->qid); 127 ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d", 128 zdev->ap_dev->qid, zdev->online, ehdr->reply_code); 129 return -EAGAIN; 130 default: 131 zdev->online = 0; 132 pr_err("Cryptographic device %x failed and was set offline\n", 133 zdev->ap_dev->qid); 134 ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d", 135 zdev->ap_dev->qid, zdev->online, ehdr->reply_code); 136 return -EAGAIN; /* repeat the request on a different device. */ 137 } 138 } 139 140 #endif /* _ZCRYPT_ERROR_H_ */ 141