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zcrypt_error.h
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1 /*
2  * zcrypt 2.1.0
3  *
4  * Copyright IBM Corp. 2001, 2006
5  * Author(s): Robert Burroughs
6  * Eric Rossman ([email protected])
7  *
8  * Hotplug & misc device support: Jochen Roehrig ([email protected])
9  * Major cleanup & driver split: Martin Schwidefsky <[email protected]>
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 
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) {
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;
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. Warn about it, disable the device
110  * and then repeat the request.
111  */
112  WARN_ON(1);
114  zdev->online = 0;
115  ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d",
116  zdev->ap_dev->qid,
117  zdev->online, ehdr->reply_code);
118  return -EAGAIN;
121  // REP88_ERROR_MODULE_FAILURE // '10' CEX2A
122  /* If a card fails disable it and repeat the request. */
124  zdev->online = 0;
125  ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d",
126  zdev->ap_dev->qid,
127  zdev->online, ehdr->reply_code);
128  return -EAGAIN;
129  default:
130  zdev->online = 0;
131  ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d",
132  zdev->ap_dev->qid,
133  zdev->online, ehdr->reply_code);
134  return -EAGAIN; /* repeat the request on a different device. */
135  }
136 }
137 
138 #endif /* _ZCRYPT_ERROR_H_ */