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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 */
33struct 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_RESERVED_FIELDO 0x50 /* old value */
56#define REP82_ERROR_WORD_ALIGNMENT 0x60
57#define REP82_ERROR_MESSAGE_LENGTH 0x80
58#define REP82_ERROR_OPERAND_INVALID 0x82
59#define REP82_ERROR_OPERAND_SIZE 0x84
60#define REP82_ERROR_EVEN_MOD_IN_OPND 0x85
61#define REP82_ERROR_RESERVED_FIELD 0x88
62#define REP82_ERROR_INVALID_DOMAIN_PENDING 0x8A
63#define REP82_ERROR_FILTERED_BY_HYPERVISOR 0x8B
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#define REP88_ERROR_MESSAGE_TYPE 0x20
70#define REP88_ERROR_MESSAGE_MALFORMD 0x22
71#define REP88_ERROR_MESSAGE_LENGTH 0x23
72#define REP88_ERROR_RESERVED_FIELD 0x24
73#define REP88_ERROR_KEY_TYPE 0x34
74#define REP88_ERROR_INVALID_KEY 0x82 /* CEX2A */
75#define REP88_ERROR_OPERAND 0x84 /* CEX2A */
76#define REP88_ERROR_OPERAND_EVEN_MOD 0x85 /* CEX2A */
77
78static inline int convert_error(struct zcrypt_queue *zq,
79 struct ap_message *reply)
80{
81 struct error_hdr *ehdr = reply->msg;
82 int card = AP_QID_CARD(zq->queue->qid);
83 int queue = AP_QID_QUEUE(zq->queue->qid);
84
85 switch (ehdr->reply_code) {
86 case REP82_ERROR_INVALID_MSG_LEN: /* 0x23 */
87 case REP82_ERROR_RESERVD_FIELD: /* 0x24 */
88 case REP82_ERROR_FORMAT_FIELD: /* 0x29 */
89 case REP82_ERROR_MALFORMED_MSG: /* 0x40 */
90 case REP82_ERROR_INVALID_SPECIAL_CMD: /* 0x41 */
91 case REP82_ERROR_MESSAGE_LENGTH: /* 0x80 */
92 case REP82_ERROR_OPERAND_INVALID: /* 0x82 */
93 case REP82_ERROR_OPERAND_SIZE: /* 0x84 */
94 case REP82_ERROR_EVEN_MOD_IN_OPND: /* 0x85 */
95 case REP82_ERROR_INVALID_DOMAIN_PENDING: /* 0x8A */
96 case REP82_ERROR_FILTERED_BY_HYPERVISOR: /* 0x8B */
97 case REP82_ERROR_PACKET_TRUNCATED: /* 0xA0 */
98 case REP88_ERROR_MESSAGE_MALFORMD: /* 0x22 */
99 case REP88_ERROR_KEY_TYPE: /* 0x34 */
100 /* RY indicates malformed request */
101 ZCRYPT_DBF_WARN("%s dev=%02x.%04x RY=0x%02x => rc=EINVAL\n",
102 __func__, card, queue, ehdr->reply_code);
103 return -EINVAL;
104 case REP82_ERROR_MACHINE_FAILURE: /* 0x10 */
105 case REP82_ERROR_MESSAGE_TYPE: /* 0x20 */
106 case REP82_ERROR_TRANSPORT_FAIL: /* 0x90 */
107 /*
108 * Msg to wrong type or card/infrastructure failure.
109 * Trigger rescan of the ap bus, trigger retry request.
110 */
111 atomic_set(&zcrypt_rescan_req, 1);
112 /* For type 86 response show the apfs value (failure reason) */
113 if (ehdr->reply_code == REP82_ERROR_TRANSPORT_FAIL &&
114 ehdr->type == TYPE86_RSP_CODE) {
115 struct {
116 struct type86_hdr hdr;
117 struct type86_fmt2_ext fmt2;
118 } __packed * head = reply->msg;
119 unsigned int apfs = *((u32 *)head->fmt2.apfs);
120
121 ZCRYPT_DBF_WARN(
122 "%s dev=%02x.%04x RY=0x%02x apfs=0x%x => bus rescan, rc=EAGAIN\n",
123 __func__, card, queue, ehdr->reply_code, apfs);
124 } else {
125 ZCRYPT_DBF_WARN("%s dev=%02x.%04x RY=0x%02x => bus rescan, rc=EAGAIN\n",
126 __func__, card, queue,
127 ehdr->reply_code);
128 }
129 return -EAGAIN;
130 default:
131 /* Assume request is valid and a retry will be worth it */
132 ZCRYPT_DBF_WARN("%s dev=%02x.%04x RY=0x%02x => rc=EAGAIN\n",
133 __func__, card, queue, ehdr->reply_code);
134 return -EAGAIN;
135 }
136}
137
138#endif /* _ZCRYPT_ERROR_H_ */
1/*
2 * linux/drivers/s390/crypto/zcrypt_error.h
3 *
4 * zcrypt 2.1.0
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 switch (ehdr->reply_code) {
96 case REP82_ERROR_OPERAND_INVALID:
97 case REP82_ERROR_OPERAND_SIZE:
98 case REP82_ERROR_EVEN_MOD_IN_OPND:
99 case REP88_ERROR_MESSAGE_MALFORMD:
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;
105 case REP82_ERROR_MESSAGE_TYPE:
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);
113 zdev->online = 0;
114 return -EAGAIN;
115 case REP82_ERROR_TRANSPORT_FAIL:
116 case REP82_ERROR_MACHINE_FAILURE:
117 // REP88_ERROR_MODULE_FAILURE // '10' CEX2A
118 /* If a card fails disable it and repeat the request. */
119 zdev->online = 0;
120 return -EAGAIN;
121 default:
122 zdev->online = 0;
123 return -EAGAIN; /* repeat the request on a different device. */
124 }
125}
126
127#endif /* _ZCRYPT_ERROR_H_ */