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1/* SPDX-License-Identifier: GPL-2.0+ */2/*3 * Copyright IBM Corp. 2001, 20064 * Author(s): Robert Burroughs5 * 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 Messages21 *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 0x8242#define TYPE88_RSP_CODE 0x8843 44#define REP82_ERROR_MACHINE_FAILURE 0x1045#define REP82_ERROR_PREEMPT_FAILURE 0x1246#define REP82_ERROR_CHECKPT_FAILURE 0x1447#define REP82_ERROR_MESSAGE_TYPE 0x2048#define REP82_ERROR_INVALID_COMM_CD 0x21 /* Type 84 */49#define REP82_ERROR_INVALID_MSG_LEN 0x2350#define REP82_ERROR_RESERVD_FIELD 0x24 /* was 0x50 */51#define REP82_ERROR_FORMAT_FIELD 0x2952#define REP82_ERROR_INVALID_COMMAND 0x3053#define REP82_ERROR_MALFORMED_MSG 0x4054#define REP82_ERROR_INVALID_SPECIAL_CMD 0x4155#define REP82_ERROR_RESERVED_FIELDO 0x50 /* old value */56#define REP82_ERROR_WORD_ALIGNMENT 0x6057#define REP82_ERROR_MESSAGE_LENGTH 0x8058#define REP82_ERROR_OPERAND_INVALID 0x8259#define REP82_ERROR_OPERAND_SIZE 0x8460#define REP82_ERROR_EVEN_MOD_IN_OPND 0x8561#define REP82_ERROR_RESERVED_FIELD 0x8862#define REP82_ERROR_INVALID_DOMAIN_PENDING 0x8A63#define REP82_ERROR_FILTERED_BY_HYPERVISOR 0x8B64#define REP82_ERROR_TRANSPORT_FAIL 0x9065#define REP82_ERROR_PACKET_TRUNCATED 0xA066#define REP82_ERROR_ZERO_BUFFER_LEN 0xB067 68#define REP88_ERROR_MODULE_FAILURE 0x1069#define REP88_ERROR_MESSAGE_TYPE 0x2070#define REP88_ERROR_MESSAGE_MALFORMD 0x2271#define REP88_ERROR_MESSAGE_LENGTH 0x2372#define REP88_ERROR_RESERVED_FIELD 0x2473#define REP88_ERROR_KEY_TYPE 0x3474#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 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 }117 return -EINVAL;118 case REP82_ERROR_MACHINE_FAILURE: /* 0x10 */119 case REP82_ERROR_MESSAGE_TYPE: /* 0x20 */120 case REP82_ERROR_TRANSPORT_FAIL: /* 0x90 */121 /*122 * Msg to wrong type or card/infrastructure failure. Return123 * EAGAIN, the upper layer may do a retry on the request.124 */125 /* For type 86 response show the apfs value (failure reason) */126 if (ehdr->reply_code == REP82_ERROR_TRANSPORT_FAIL &&127 ehdr->type == TYPE86_RSP_CODE) {128 struct {129 struct type86_hdr hdr;130 struct type86_fmt2_ext fmt2;131 } __packed * head = reply->msg;132 unsigned int apfs = *((u32 *)head->fmt2.apfs);133 134 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);137 } else {138 ZCRYPT_DBF_WARN("%s dev=%02x.%04x RY=0x%02x => bus rescan, rc=EAGAIN\n",139 __func__, card, queue,140 ehdr->reply_code);141 }142 return -EAGAIN;143 default:144 /* Assume request is valid and a retry will be worth it */145 ZCRYPT_DBF_WARN("%s dev=%02x.%04x RY=0x%02x => rc=EAGAIN\n",146 __func__, card, queue, ehdr->reply_code);147 return -EAGAIN;148 }149}150 151#endif /* _ZCRYPT_ERROR_H_ */152