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_INVALID_DOMAIN_PRECHECK 0x42 69 #define REP82_ERROR_RESERVED_FIELDO 0x50 /* old value */ 70 #define REP82_ERROR_WORD_ALIGNMENT 0x60 71 #define REP82_ERROR_MESSAGE_LENGTH 0x80 72 #define REP82_ERROR_OPERAND_INVALID 0x82 73 #define REP82_ERROR_OPERAND_SIZE 0x84 74 #define REP82_ERROR_EVEN_MOD_IN_OPND 0x85 75 #define REP82_ERROR_RESERVED_FIELD 0x88 76 #define REP82_ERROR_INVALID_DOMAIN_PENDING 0x8A 77 #define REP82_ERROR_TRANSPORT_FAIL 0x90 78 #define REP82_ERROR_PACKET_TRUNCATED 0xA0 79 #define REP82_ERROR_ZERO_BUFFER_LEN 0xB0 80 81 #define REP88_ERROR_MODULE_FAILURE 0x10 82 83 #define REP88_ERROR_MESSAGE_TYPE 0x20 84 #define REP88_ERROR_MESSAGE_MALFORMD 0x22 85 #define REP88_ERROR_MESSAGE_LENGTH 0x23 86 #define REP88_ERROR_RESERVED_FIELD 0x24 87 #define REP88_ERROR_KEY_TYPE 0x34 88 #define REP88_ERROR_INVALID_KEY 0x82 /* CEX2A */ 89 #define REP88_ERROR_OPERAND 0x84 /* CEX2A */ 90 #define REP88_ERROR_OPERAND_EVEN_MOD 0x85 /* CEX2A */ 91 92 static inline int convert_error(struct zcrypt_queue *zq, 93 struct ap_message *reply) 94 { 95 struct error_hdr *ehdr = reply->message; 96 int card = AP_QID_CARD(zq->queue->qid); 97 int queue = AP_QID_QUEUE(zq->queue->qid); 98 99 switch (ehdr->reply_code) { 100 case REP82_ERROR_OPERAND_INVALID: 101 case REP82_ERROR_OPERAND_SIZE: 102 case REP82_ERROR_EVEN_MOD_IN_OPND: 103 case REP88_ERROR_MESSAGE_MALFORMD: 104 case REP82_ERROR_INVALID_DOMAIN_PRECHECK: 105 case REP82_ERROR_INVALID_DOMAIN_PENDING: 106 // REP88_ERROR_INVALID_KEY // '82' CEX2A 107 // REP88_ERROR_OPERAND // '84' CEX2A 108 // REP88_ERROR_OPERAND_EVEN_MOD // '85' CEX2A 109 /* Invalid input data. */ 110 ZCRYPT_DBF(DBF_WARN, 111 "device=%02x.%04x reply=0x%02x => rc=EINVAL\n", 112 card, queue, ehdr->reply_code); 113 return -EINVAL; 114 case REP82_ERROR_MESSAGE_TYPE: 115 // REP88_ERROR_MESSAGE_TYPE // '20' CEX2A 116 /* 117 * To sent a message of the wrong type is a bug in the 118 * device driver. Send error msg, disable the device 119 * and then repeat the request. 120 */ 121 atomic_set(&zcrypt_rescan_req, 1); 122 zq->online = 0; 123 pr_err("Cryptographic device %02x.%04x failed and was set offline\n", 124 card, queue); 125 ZCRYPT_DBF(DBF_ERR, 126 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n", 127 card, queue, ehdr->reply_code); 128 return -EAGAIN; 129 case REP82_ERROR_TRANSPORT_FAIL: 130 case REP82_ERROR_MACHINE_FAILURE: 131 // REP88_ERROR_MODULE_FAILURE // '10' CEX2A 132 /* If a card fails disable it and repeat the request. */ 133 atomic_set(&zcrypt_rescan_req, 1); 134 zq->online = 0; 135 pr_err("Cryptographic device %02x.%04x failed and was set offline\n", 136 card, queue); 137 ZCRYPT_DBF(DBF_ERR, 138 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n", 139 card, queue, ehdr->reply_code); 140 return -EAGAIN; 141 default: 142 zq->online = 0; 143 pr_err("Cryptographic device %02x.%04x failed and was set offline\n", 144 card, queue); 145 ZCRYPT_DBF(DBF_ERR, 146 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n", 147 card, queue, ehdr->reply_code); 148 return -EAGAIN; /* repeat the request on a different device. */ 149 } 150 } 151 152 #endif /* _ZCRYPT_ERROR_H_ */ 153