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_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
convert_error(struct zcrypt_queue * zq,struct ap_message * reply)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 case REP82_ERROR_INVALID_SPECIAL_CMD:
94 // REP88_ERROR_INVALID_KEY // '82' CEX2A
95 // REP88_ERROR_OPERAND // '84' CEX2A
96 // REP88_ERROR_OPERAND_EVEN_MOD // '85' CEX2A
97 /* Invalid input data. */
98 ZCRYPT_DBF(DBF_WARN,
99 "device=%02x.%04x reply=0x%02x => rc=EINVAL\n",
100 card, queue, ehdr->reply_code);
101 return -EINVAL;
102 case REP82_ERROR_MESSAGE_TYPE:
103 // REP88_ERROR_MESSAGE_TYPE // '20' CEX2A
104 /*
105 * To sent a message of the wrong type is a bug in the
106 * device driver. Send error msg, disable the device
107 * and then repeat the request.
108 */
109 atomic_set(&zcrypt_rescan_req, 1);
110 zq->online = 0;
111 pr_err("Cryptographic device %02x.%04x failed and was set offline\n",
112 card, queue);
113 ZCRYPT_DBF(DBF_ERR,
114 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n",
115 card, queue, ehdr->reply_code);
116 return -EAGAIN;
117 case REP82_ERROR_TRANSPORT_FAIL:
118 /* Card or infrastructure failure, disable card */
119 atomic_set(&zcrypt_rescan_req, 1);
120 zq->online = 0;
121 pr_err("Cryptographic device %02x.%04x failed and was set offline\n",
122 card, queue);
123 /* For type 86 response show the apfs value (failure reason) */
124 if (ehdr->type == TYPE86_RSP_CODE) {
125 struct {
126 struct type86_hdr hdr;
127 struct type86_fmt2_ext fmt2;
128 } __packed * head = reply->message;
129 unsigned int apfs = *((u32 *)head->fmt2.apfs);
130
131 ZCRYPT_DBF(DBF_ERR,
132 "device=%02x.%04x reply=0x%02x apfs=0x%x => online=0 rc=EAGAIN\n",
133 card, queue, apfs, ehdr->reply_code);
134 } else
135 ZCRYPT_DBF(DBF_ERR,
136 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n",
137 card, queue, ehdr->reply_code);
138 return -EAGAIN;
139 case REP82_ERROR_MACHINE_FAILURE:
140 // REP88_ERROR_MODULE_FAILURE // '10' CEX2A
141 /* If a card fails disable it and repeat the request. */
142 atomic_set(&zcrypt_rescan_req, 1);
143 zq->online = 0;
144 pr_err("Cryptographic device %02x.%04x failed and was set offline\n",
145 card, queue);
146 ZCRYPT_DBF(DBF_ERR,
147 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n",
148 card, queue, ehdr->reply_code);
149 return -EAGAIN;
150 default:
151 zq->online = 0;
152 pr_err("Cryptographic device %02x.%04x failed and was set offline\n",
153 card, queue);
154 ZCRYPT_DBF(DBF_ERR,
155 "device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n",
156 card, queue, ehdr->reply_code);
157 return -EAGAIN; /* repeat the request on a different device. */
158 }
159 }
160
161 #endif /* _ZCRYPT_ERROR_H_ */
162
