1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright IBM Corp. 2001, 2006 4 * Author(s): Robert Burroughs 5 * Eric Rossman (edrossma@us.ibm.com) 6 * 7 * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) 8 * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> 9 */ 10 11 #ifndef _ZCRYPT_ERROR_H_ 12 #define _ZCRYPT_ERROR_H_ 13 14 #include <linux/atomic.h> 15 #include "zcrypt_debug.h" 16 #include "zcrypt_api.h" 17 #include "zcrypt_msgtype6.h" 18 19 /** 20 * Reply Messages 21 * 22 * Error reply messages are of two types: 23 * 82: Error (see below) 24 * 88: Error (see below) 25 * Both type 82 and type 88 have the same structure in the header. 26 * 27 * Request reply messages are of three known types: 28 * 80: Reply from a Type 50 Request (see CEX2A-RELATED STRUCTS) 29 * 84: Reply from a Type 4 Request (see PCICA-RELATED STRUCTS) 30 * 86: Reply from a Type 6 Request (see PCICC/PCIXCC/CEX2C-RELATED STRUCTS) 31 * 32 */ 33 struct error_hdr { 34 unsigned char reserved1; /* 0x00 */ 35 unsigned char type; /* 0x82 or 0x88 */ 36 unsigned char reserved2[2]; /* 0x0000 */ 37 unsigned char reply_code; /* reply code */ 38 unsigned char reserved3[3]; /* 0x000000 */ 39 }; 40 41 #define TYPE82_RSP_CODE 0x82 42 #define TYPE88_RSP_CODE 0x88 43 44 #define REP82_ERROR_MACHINE_FAILURE 0x10 45 #define REP82_ERROR_PREEMPT_FAILURE 0x12 46 #define REP82_ERROR_CHECKPT_FAILURE 0x14 47 #define REP82_ERROR_MESSAGE_TYPE 0x20 48 #define REP82_ERROR_INVALID_COMM_CD 0x21 /* Type 84 */ 49 #define REP82_ERROR_INVALID_MSG_LEN 0x23 50 #define REP82_ERROR_RESERVD_FIELD 0x24 /* was 0x50 */ 51 #define REP82_ERROR_FORMAT_FIELD 0x29 52 #define REP82_ERROR_INVALID_COMMAND 0x30 53 #define REP82_ERROR_MALFORMED_MSG 0x40 54 #define REP82_ERROR_INVALID_SPECIAL_CMD 0x41 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_FILTERED_BY_HYPERVISOR 0x8B 65 #define REP82_ERROR_TRANSPORT_FAIL 0x90 66 #define REP82_ERROR_PACKET_TRUNCATED 0xA0 67 #define REP82_ERROR_ZERO_BUFFER_LEN 0xB0 68 69 #define REP88_ERROR_MODULE_FAILURE 0x10 70 71 #define REP88_ERROR_MESSAGE_TYPE 0x20 72 #define REP88_ERROR_MESSAGE_MALFORMD 0x22 73 #define REP88_ERROR_MESSAGE_LENGTH 0x23 74 #define REP88_ERROR_RESERVED_FIELD 0x24 75 #define REP88_ERROR_KEY_TYPE 0x34 76 #define REP88_ERROR_INVALID_KEY 0x82 /* CEX2A */ 77 #define REP88_ERROR_OPERAND 0x84 /* CEX2A */ 78 #define REP88_ERROR_OPERAND_EVEN_MOD 0x85 /* CEX2A */ 79 80 static inline int convert_error(struct zcrypt_queue *zq, 81 struct ap_message *reply) 82 { 83 struct error_hdr *ehdr = reply->msg; 84 int card = AP_QID_CARD(zq->queue->qid); 85 int queue = AP_QID_QUEUE(zq->queue->qid); 86 87 switch (ehdr->reply_code) { 88 case REP82_ERROR_OPERAND_INVALID: 89 case REP82_ERROR_OPERAND_SIZE: 90 case REP82_ERROR_EVEN_MOD_IN_OPND: 91 case REP88_ERROR_MESSAGE_MALFORMD: 92 case REP82_ERROR_INVALID_DOMAIN_PRECHECK: 93 case REP82_ERROR_INVALID_DOMAIN_PENDING: 94 case REP82_ERROR_INVALID_SPECIAL_CMD: 95 case REP82_ERROR_FILTERED_BY_HYPERVISOR: 96 // REP88_ERROR_INVALID_KEY // '82' CEX2A 97 // REP88_ERROR_OPERAND // '84' CEX2A 98 // REP88_ERROR_OPERAND_EVEN_MOD // '85' CEX2A 99 /* Invalid input data. */ 100 ZCRYPT_DBF(DBF_WARN, 101 "device=%02x.%04x reply=0x%02x => rc=EINVAL\n", 102 card, queue, ehdr->reply_code); 103 return -EINVAL; 104 case REP82_ERROR_MESSAGE_TYPE: 105 // REP88_ERROR_MESSAGE_TYPE // '20' CEX2A 106 /* 107 * To sent a message of the wrong type is a bug in the 108 * device driver. Send error msg, disable the device 109 * and then repeat the request. 110 */ 111 atomic_set(&zcrypt_rescan_req, 1); 112 zq->online = 0; 113 pr_err("Cryptographic device %02x.%04x failed and was set offline\n", 114 card, queue); 115 ZCRYPT_DBF(DBF_ERR, 116 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n", 117 card, queue, ehdr->reply_code); 118 return -EAGAIN; 119 case REP82_ERROR_TRANSPORT_FAIL: 120 /* Card or infrastructure failure, disable card */ 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 /* For type 86 response show the apfs value (failure reason) */ 126 if (ehdr->type == TYPE86_RSP_CODE) { 127 struct { 128 struct type86_hdr hdr; 129 struct type86_fmt2_ext fmt2; 130 } __packed * head = reply->msg; 131 unsigned int apfs = *((u32 *)head->fmt2.apfs); 132 133 ZCRYPT_DBF(DBF_ERR, 134 "device=%02x.%04x reply=0x%02x apfs=0x%x => online=0 rc=EAGAIN\n", 135 card, queue, apfs, ehdr->reply_code); 136 } else 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 case REP82_ERROR_MACHINE_FAILURE: 142 // REP88_ERROR_MODULE_FAILURE // '10' CEX2A 143 /* If a card fails disable it and repeat the request. */ 144 atomic_set(&zcrypt_rescan_req, 1); 145 zq->online = 0; 146 pr_err("Cryptographic device %02x.%04x failed and was set offline\n", 147 card, queue); 148 ZCRYPT_DBF(DBF_ERR, 149 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n", 150 card, queue, ehdr->reply_code); 151 return -EAGAIN; 152 default: 153 zq->online = 0; 154 pr_err("Cryptographic device %02x.%04x failed and was set offline\n", 155 card, queue); 156 ZCRYPT_DBF(DBF_ERR, 157 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n", 158 card, queue, ehdr->reply_code); 159 return -EAGAIN; /* repeat the request on a different device. */ 160 } 161 } 162 163 #endif /* _ZCRYPT_ERROR_H_ */ 164