164 lines
5.6 KiB
C
164 lines
5.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright IBM Corp. 2001, 2006
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* Author(s): Robert Burroughs
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* Eric Rossman (edrossma@us.ibm.com)
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*
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* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
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* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
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*/
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#ifndef _ZCRYPT_ERROR_H_
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#define _ZCRYPT_ERROR_H_
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#include <linux/atomic.h>
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#include "zcrypt_debug.h"
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#include "zcrypt_api.h"
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#include "zcrypt_msgtype6.h"
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/**
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* Reply Messages
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*
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* Error reply messages are of two types:
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* 82: Error (see below)
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* 88: Error (see below)
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* Both type 82 and type 88 have the same structure in the header.
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*
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* Request reply messages are of three known types:
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* 80: Reply from a Type 50 Request (see CEX2A-RELATED STRUCTS)
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* 84: Reply from a Type 4 Request (see PCICA-RELATED STRUCTS)
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* 86: Reply from a Type 6 Request (see PCICC/PCIXCC/CEX2C-RELATED STRUCTS)
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*
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*/
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struct error_hdr {
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unsigned char reserved1; /* 0x00 */
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unsigned char type; /* 0x82 or 0x88 */
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unsigned char reserved2[2]; /* 0x0000 */
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unsigned char reply_code; /* reply code */
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unsigned char reserved3[3]; /* 0x000000 */
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};
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#define TYPE82_RSP_CODE 0x82
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#define TYPE88_RSP_CODE 0x88
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#define REP82_ERROR_MACHINE_FAILURE 0x10
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#define REP82_ERROR_PREEMPT_FAILURE 0x12
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#define REP82_ERROR_CHECKPT_FAILURE 0x14
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#define REP82_ERROR_MESSAGE_TYPE 0x20
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#define REP82_ERROR_INVALID_COMM_CD 0x21 /* Type 84 */
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#define REP82_ERROR_INVALID_MSG_LEN 0x23
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#define REP82_ERROR_RESERVD_FIELD 0x24 /* was 0x50 */
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#define REP82_ERROR_FORMAT_FIELD 0x29
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#define REP82_ERROR_INVALID_COMMAND 0x30
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#define REP82_ERROR_MALFORMED_MSG 0x40
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#define REP82_ERROR_INVALID_SPECIAL_CMD 0x41
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#define REP82_ERROR_INVALID_DOMAIN_PRECHECK 0x42
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#define REP82_ERROR_RESERVED_FIELDO 0x50 /* old value */
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#define REP82_ERROR_WORD_ALIGNMENT 0x60
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#define REP82_ERROR_MESSAGE_LENGTH 0x80
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#define REP82_ERROR_OPERAND_INVALID 0x82
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#define REP82_ERROR_OPERAND_SIZE 0x84
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#define REP82_ERROR_EVEN_MOD_IN_OPND 0x85
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#define REP82_ERROR_RESERVED_FIELD 0x88
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#define REP82_ERROR_INVALID_DOMAIN_PENDING 0x8A
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#define REP82_ERROR_FILTERED_BY_HYPERVISOR 0x8B
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#define REP82_ERROR_TRANSPORT_FAIL 0x90
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#define REP82_ERROR_PACKET_TRUNCATED 0xA0
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#define REP82_ERROR_ZERO_BUFFER_LEN 0xB0
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#define REP88_ERROR_MODULE_FAILURE 0x10
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#define REP88_ERROR_MESSAGE_TYPE 0x20
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#define REP88_ERROR_MESSAGE_MALFORMD 0x22
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#define REP88_ERROR_MESSAGE_LENGTH 0x23
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#define REP88_ERROR_RESERVED_FIELD 0x24
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#define REP88_ERROR_KEY_TYPE 0x34
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#define REP88_ERROR_INVALID_KEY 0x82 /* CEX2A */
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#define REP88_ERROR_OPERAND 0x84 /* CEX2A */
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#define REP88_ERROR_OPERAND_EVEN_MOD 0x85 /* CEX2A */
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static inline int convert_error(struct zcrypt_queue *zq,
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struct ap_message *reply)
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{
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struct error_hdr *ehdr = reply->message;
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int card = AP_QID_CARD(zq->queue->qid);
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int queue = AP_QID_QUEUE(zq->queue->qid);
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switch (ehdr->reply_code) {
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case REP82_ERROR_OPERAND_INVALID:
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case REP82_ERROR_OPERAND_SIZE:
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case REP82_ERROR_EVEN_MOD_IN_OPND:
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case REP88_ERROR_MESSAGE_MALFORMD:
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case REP82_ERROR_INVALID_DOMAIN_PRECHECK:
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case REP82_ERROR_INVALID_DOMAIN_PENDING:
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case REP82_ERROR_INVALID_SPECIAL_CMD:
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case REP82_ERROR_FILTERED_BY_HYPERVISOR:
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// REP88_ERROR_INVALID_KEY // '82' CEX2A
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// REP88_ERROR_OPERAND // '84' CEX2A
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// REP88_ERROR_OPERAND_EVEN_MOD // '85' CEX2A
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/* Invalid input data. */
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ZCRYPT_DBF(DBF_WARN,
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"device=%02x.%04x reply=0x%02x => rc=EINVAL\n",
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card, queue, ehdr->reply_code);
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return -EINVAL;
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case REP82_ERROR_MESSAGE_TYPE:
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// REP88_ERROR_MESSAGE_TYPE // '20' CEX2A
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/*
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* To sent a message of the wrong type is a bug in the
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* device driver. Send error msg, disable the device
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* and then repeat the request.
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*/
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atomic_set(&zcrypt_rescan_req, 1);
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zq->online = 0;
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pr_err("Cryptographic device %02x.%04x failed and was set offline\n",
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card, queue);
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ZCRYPT_DBF(DBF_ERR,
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"device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n",
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card, queue, ehdr->reply_code);
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return -EAGAIN;
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case REP82_ERROR_TRANSPORT_FAIL:
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/* Card or infrastructure failure, disable card */
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atomic_set(&zcrypt_rescan_req, 1);
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zq->online = 0;
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pr_err("Cryptographic device %02x.%04x failed and was set offline\n",
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card, queue);
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/* For type 86 response show the apfs value (failure reason) */
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if (ehdr->type == TYPE86_RSP_CODE) {
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struct {
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struct type86_hdr hdr;
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struct type86_fmt2_ext fmt2;
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} __packed * head = reply->message;
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unsigned int apfs = *((u32 *)head->fmt2.apfs);
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ZCRYPT_DBF(DBF_ERR,
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"device=%02x.%04x reply=0x%02x apfs=0x%x => online=0 rc=EAGAIN\n",
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card, queue, apfs, ehdr->reply_code);
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} else
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ZCRYPT_DBF(DBF_ERR,
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"device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n",
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card, queue, ehdr->reply_code);
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return -EAGAIN;
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case REP82_ERROR_MACHINE_FAILURE:
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// REP88_ERROR_MODULE_FAILURE // '10' CEX2A
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/* If a card fails disable it and repeat the request. */
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atomic_set(&zcrypt_rescan_req, 1);
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zq->online = 0;
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pr_err("Cryptographic device %02x.%04x failed and was set offline\n",
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card, queue);
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ZCRYPT_DBF(DBF_ERR,
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"device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n",
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card, queue, ehdr->reply_code);
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return -EAGAIN;
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default:
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zq->online = 0;
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pr_err("Cryptographic device %02x.%04x failed and was set offline\n",
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card, queue);
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ZCRYPT_DBF(DBF_ERR,
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"device=%02x.%04x reply=0x%02x => online=0 rc=EAGAIN\n",
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card, queue, ehdr->reply_code);
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return -EAGAIN; /* repeat the request on a different device. */
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}
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}
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#endif /* _ZCRYPT_ERROR_H_ */
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