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