1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * zcrypt 2.1.0 4 * 5 * Copyright IBM Corp. 2001, 2006 6 * Author(s): Robert Burroughs 7 * Eric Rossman (edrossma@us.ibm.com) 8 * 9 * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) 10 * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> 11 */ 12 13 #ifndef _ZCRYPT_ERROR_H_ 14 #define _ZCRYPT_ERROR_H_ 15 16 #include <linux/atomic.h> 17 #include "zcrypt_debug.h" 18 #include "zcrypt_api.h" 19 20 /** 21 * Reply Messages 22 * 23 * Error reply messages are of two types: 24 * 82: Error (see below) 25 * 88: Error (see below) 26 * Both type 82 and type 88 have the same structure in the header. 27 * 28 * Request reply messages are of three known types: 29 * 80: Reply from a Type 50 Request (see CEX2A-RELATED STRUCTS) 30 * 84: Reply from a Type 4 Request (see PCICA-RELATED STRUCTS) 31 * 86: Reply from a Type 6 Request (see PCICC/PCIXCC/CEX2C-RELATED STRUCTS) 32 * 33 */ 34 struct error_hdr { 35 unsigned char reserved1; /* 0x00 */ 36 unsigned char type; /* 0x82 or 0x88 */ 37 unsigned char reserved2[2]; /* 0x0000 */ 38 unsigned char reply_code; /* reply code */ 39 unsigned char reserved3[3]; /* 0x000000 */ 40 }; 41 42 #define TYPE82_RSP_CODE 0x82 43 #define TYPE88_RSP_CODE 0x88 44 45 #define REP82_ERROR_MACHINE_FAILURE 0x10 46 #define REP82_ERROR_PREEMPT_FAILURE 0x12 47 #define REP82_ERROR_CHECKPT_FAILURE 0x14 48 #define REP82_ERROR_MESSAGE_TYPE 0x20 49 #define REP82_ERROR_INVALID_COMM_CD 0x21 /* Type 84 */ 50 #define REP82_ERROR_INVALID_MSG_LEN 0x23 51 #define REP82_ERROR_RESERVD_FIELD 0x24 /* was 0x50 */ 52 #define REP82_ERROR_FORMAT_FIELD 0x29 53 #define REP82_ERROR_INVALID_COMMAND 0x30 54 #define REP82_ERROR_MALFORMED_MSG 0x40 55 #define REP82_ERROR_INVALID_DOMAIN_PRECHECK 0x42 56 #define REP82_ERROR_RESERVED_FIELDO 0x50 /* old value */ 57 #define REP82_ERROR_WORD_ALIGNMENT 0x60 58 #define REP82_ERROR_MESSAGE_LENGTH 0x80 59 #define REP82_ERROR_OPERAND_INVALID 0x82 60 #define REP82_ERROR_OPERAND_SIZE 0x84 61 #define REP82_ERROR_EVEN_MOD_IN_OPND 0x85 62 #define REP82_ERROR_RESERVED_FIELD 0x88 63 #define REP82_ERROR_INVALID_DOMAIN_PENDING 0x8A 64 #define REP82_ERROR_TRANSPORT_FAIL 0x90 65 #define REP82_ERROR_PACKET_TRUNCATED 0xA0 66 #define REP82_ERROR_ZERO_BUFFER_LEN 0xB0 67 68 #define REP88_ERROR_MODULE_FAILURE 0x10 69 70 #define REP88_ERROR_MESSAGE_TYPE 0x20 71 #define REP88_ERROR_MESSAGE_MALFORMD 0x22 72 #define REP88_ERROR_MESSAGE_LENGTH 0x23 73 #define REP88_ERROR_RESERVED_FIELD 0x24 74 #define REP88_ERROR_KEY_TYPE 0x34 75 #define REP88_ERROR_INVALID_KEY 0x82 /* CEX2A */ 76 #define REP88_ERROR_OPERAND 0x84 /* CEX2A */ 77 #define REP88_ERROR_OPERAND_EVEN_MOD 0x85 /* CEX2A */ 78 79 static inline int convert_error(struct zcrypt_queue *zq, 80 struct ap_message *reply) 81 { 82 struct error_hdr *ehdr = reply->message; 83 int card = AP_QID_CARD(zq->queue->qid); 84 int queue = AP_QID_QUEUE(zq->queue->qid); 85 86 switch (ehdr->reply_code) { 87 case REP82_ERROR_OPERAND_INVALID: 88 case REP82_ERROR_OPERAND_SIZE: 89 case REP82_ERROR_EVEN_MOD_IN_OPND: 90 case REP88_ERROR_MESSAGE_MALFORMD: 91 case REP82_ERROR_INVALID_DOMAIN_PRECHECK: 92 case REP82_ERROR_INVALID_DOMAIN_PENDING: 93 // REP88_ERROR_INVALID_KEY // '82' CEX2A 94 // REP88_ERROR_OPERAND // '84' CEX2A 95 // REP88_ERROR_OPERAND_EVEN_MOD // '85' CEX2A 96 /* Invalid input data. */ 97 ZCRYPT_DBF(DBF_WARN, 98 "device=%02x.%04x reply=0x%02x => rc=EINVAL\n", 99 card, queue, ehdr->reply_code); 100 return -EINVAL; 101 case REP82_ERROR_MESSAGE_TYPE: 102 // REP88_ERROR_MESSAGE_TYPE // '20' CEX2A 103 /* 104 * To sent a message of the wrong type is a bug in the 105 * device driver. Send error msg, disable the device 106 * and then repeat the request. 107 */ 108 atomic_set(&zcrypt_rescan_req, 1); 109 zq->online = 0; 110 pr_err("Cryptographic device %02x.%04x failed and was set offline\n", 111 card, queue); 112 ZCRYPT_DBF(DBF_ERR, 113 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n", 114 card, queue, ehdr->reply_code); 115 return -EAGAIN; 116 case REP82_ERROR_TRANSPORT_FAIL: 117 case REP82_ERROR_MACHINE_FAILURE: 118 // REP88_ERROR_MODULE_FAILURE // '10' CEX2A 119 /* If a card fails disable it and repeat the request. */ 120 atomic_set(&zcrypt_rescan_req, 1); 121 zq->online = 0; 122 pr_err("Cryptographic device %02x.%04x failed and was set offline\n", 123 card, queue); 124 ZCRYPT_DBF(DBF_ERR, 125 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n", 126 card, queue, ehdr->reply_code); 127 return -EAGAIN; 128 default: 129 zq->online = 0; 130 pr_err("Cryptographic device %02x.%04x failed and was set offline\n", 131 card, queue); 132 ZCRYPT_DBF(DBF_ERR, 133 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n", 134 card, queue, ehdr->reply_code); 135 return -EAGAIN; /* repeat the request on a different device. */ 136 } 137 } 138 139 #endif /* _ZCRYPT_ERROR_H_ */ 140