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gerrit-public.fairphone.software / kernel / msm-4.9 / 5726fb2012f0d96153113ddb7f988a0daea587ce / . / drivers / s390 / crypto / zcrypt_error.h
blob: 2cb616ba8becdf8a52139b1ff9356cc8981ee30f [file] [log] [blame]
Martin Schwidefsky963ed932006-09-20 15:58:29 +0200[diff] [blame]1/*
2 * linux/drivers/s390/crypto/zcrypt_error.h
3 *
Ralph Wuerthner54321142006-09-20 15:58:36 +0200[diff] [blame]4 * zcrypt 2.1.0
Martin Schwidefsky963ed932006-09-20 15:58:29 +0200[diff] [blame]5 *
6 * Copyright (C) 2001, 2006 IBM Corporation
7 * Author(s): Robert Burroughs
8 * Eric Rossman (edrossma@us.ibm.com)
9 *
10 * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
11 * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2, or (at your option)
16 * any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28#ifndef _ZCRYPT_ERROR_H_
29#define _ZCRYPT_ERROR_H_
30
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 */
47struct 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
90static inline int convert_error(struct zcrypt_device *zdev,
91 struct ap_message *reply)
92{
93 struct error_hdr *ehdr = reply->message;
94
95 PRINTK("Hardware error : Type %02x Message Header: %08x%08x\n",
96 ehdr->type, *(unsigned int *) reply->message,
97 *(unsigned int *) (reply->message + 4));
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 // REP88_ERROR_INVALID_KEY // '82' CEX2A
105 // REP88_ERROR_OPERAND // '84' CEX2A
106 // REP88_ERROR_OPERAND_EVEN_MOD // '85' CEX2A
107 /* Invalid input data. */
108 return -EINVAL;
109 case REP82_ERROR_MESSAGE_TYPE:
110 // REP88_ERROR_MESSAGE_TYPE // '20' CEX2A
111 /**
112 * To sent a message of the wrong type is a bug in the
113 * device driver. Warn about it, disable the device
114 * and then repeat the request.
115 */
116 WARN_ON(1);
117 zdev->online = 0;
118 return -EAGAIN;
119 case REP82_ERROR_TRANSPORT_FAIL:
120 case REP82_ERROR_MACHINE_FAILURE:
121 // REP88_ERROR_MODULE_FAILURE // '10' CEX2A
122 /* If a card fails disable it and repeat the request. */
123 zdev->online = 0;
124 return -EAGAIN;
125 default:
126 PRINTKW("unknown type %02x reply code = %d\n",
127 ehdr->type, ehdr->reply_code);
128 zdev->online = 0;
129 return -EAGAIN; /* repeat the request on a different device. */
130 }
131}
132
133#endif /* _ZCRYPT_ERROR_H_ */