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ac2b96f3 | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
963ed931 | 2 | /* |
a53c8fab | 3 | * Copyright IBM Corp. 2001, 2006 |
963ed931 MS |
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> | |
963ed931 MS |
9 | */ |
10 | ||
11 | #ifndef _ZCRYPT_ERROR_H_ | |
12 | #define _ZCRYPT_ERROR_H_ | |
13 | ||
dabecb29 HD |
14 | #include <linux/atomic.h> |
15 | #include "zcrypt_debug.h" | |
963ed931 | 16 | #include "zcrypt_api.h" |
a17b92e0 | 17 | #include "zcrypt_msgtype6.h" |
963ed931 MS |
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 | ||
bf9f3119 HF |
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 | |
be534791 | 54 | #define REP82_ERROR_INVALID_SPECIAL_CMD 0x41 |
bf9f3119 HF |
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 | |
6733775a | 63 | #define REP82_ERROR_FILTERED_BY_HYPERVISOR 0x8B |
bf9f3119 HF |
64 | #define REP82_ERROR_TRANSPORT_FAIL 0x90 |
65 | #define REP82_ERROR_PACKET_TRUNCATED 0xA0 | |
66 | #define REP82_ERROR_ZERO_BUFFER_LEN 0xB0 | |
963ed931 | 67 | |
bf9f3119 | 68 | #define REP88_ERROR_MODULE_FAILURE 0x10 |
bf9f3119 HF |
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 */ | |
963ed931 | 77 | |
e28d2af4 | 78 | static inline int convert_error(struct zcrypt_queue *zq, |
963ed931 MS |
79 | struct ap_message *reply) |
80 | { | |
74ecbef7 | 81 | struct error_hdr *ehdr = reply->msg; |
cccd85bf HF |
82 | int card = AP_QID_CARD(zq->queue->qid); |
83 | int queue = AP_QID_QUEUE(zq->queue->qid); | |
963ed931 | 84 | |
963ed931 | 85 | switch (ehdr->reply_code) { |
e0332629 HF |
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 */ | |
8d6be876 HF |
101 | if (ehdr->reply_code == REP82_ERROR_FILTERED_BY_HYPERVISOR && |
102 | ehdr->type == TYPE86_RSP_CODE) { | |
103 | struct { | |
104 | struct type86_hdr hdr; | |
105 | struct type86_fmt2_ext fmt2; | |
106 | } __packed * head = reply->msg; | |
107 | unsigned int apfs = *((u32 *)head->fmt2.apfs); | |
108 | ||
109 | ZCRYPT_DBF_WARN("%s dev=%02x.%04x RY=0x%02x apfs=0x%x => rc=EINVAL\n", | |
110 | __func__, card, queue, | |
111 | ehdr->reply_code, apfs); | |
112 | } else { | |
113 | ZCRYPT_DBF_WARN("%s dev=%02x.%04x RY=0x%02x => rc=EINVAL\n", | |
114 | __func__, card, queue, | |
115 | ehdr->reply_code); | |
116 | } | |
963ed931 | 117 | return -EINVAL; |
e0332629 HF |
118 | case REP82_ERROR_MACHINE_FAILURE: /* 0x10 */ |
119 | case REP82_ERROR_MESSAGE_TYPE: /* 0x20 */ | |
120 | case REP82_ERROR_TRANSPORT_FAIL: /* 0x90 */ | |
1749a81d | 121 | /* |
c3384369 HF |
122 | * Msg to wrong type or card/infrastructure failure. Return |
123 | * EAGAIN, the upper layer may do a retry on the request. | |
963ed931 | 124 | */ |
a17b92e0 | 125 | /* For type 86 response show the apfs value (failure reason) */ |
e0332629 HF |
126 | if (ehdr->reply_code == REP82_ERROR_TRANSPORT_FAIL && |
127 | ehdr->type == TYPE86_RSP_CODE) { | |
a17b92e0 HF |
128 | struct { |
129 | struct type86_hdr hdr; | |
130 | struct type86_fmt2_ext fmt2; | |
74ecbef7 | 131 | } __packed * head = reply->msg; |
a17b92e0 HF |
132 | unsigned int apfs = *((u32 *)head->fmt2.apfs); |
133 | ||
3f74eb5f HF |
134 | ZCRYPT_DBF_WARN( |
135 | "%s dev=%02x.%04x RY=0x%02x apfs=0x%x => bus rescan, rc=EAGAIN\n", | |
136 | __func__, card, queue, ehdr->reply_code, apfs); | |
2004b57c | 137 | } else { |
3f74eb5f HF |
138 | ZCRYPT_DBF_WARN("%s dev=%02x.%04x RY=0x%02x => bus rescan, rc=EAGAIN\n", |
139 | __func__, card, queue, | |
140 | ehdr->reply_code); | |
2004b57c | 141 | } |
a17b92e0 | 142 | return -EAGAIN; |
963ed931 | 143 | default: |
e0332629 | 144 | /* Assume request is valid and a retry will be worth it */ |
3f74eb5f HF |
145 | ZCRYPT_DBF_WARN("%s dev=%02x.%04x RY=0x%02x => rc=EAGAIN\n", |
146 | __func__, card, queue, ehdr->reply_code); | |
e0332629 | 147 | return -EAGAIN; |
963ed931 MS |
148 | } |
149 | } | |
150 | ||
151 | #endif /* _ZCRYPT_ERROR_H_ */ |