// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright IBM Corp. 2001, 2012
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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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* Ralph Wuerthner <rwuerthn@de.ibm.com>
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* MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com>
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*/
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#define KMSG_COMPONENT "zcrypt"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/atomic.h>
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#include <linux/uaccess.h>
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#include "ap_bus.h"
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#include "zcrypt_api.h"
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#include "zcrypt_error.h"
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#include "zcrypt_msgtype6.h"
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#include "zcrypt_cca_key.h"
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#define CEXXC_MAX_ICA_RESPONSE_SIZE 0x77c /* max size type86 v2 reply */
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#define CEIL4(x) ((((x)+3)/4)*4)
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struct response_type {
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struct completion work;
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int type;
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};
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#define CEXXC_RESPONSE_TYPE_ICA 0
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#define CEXXC_RESPONSE_TYPE_XCRB 1
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#define CEXXC_RESPONSE_TYPE_EP11 2
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MODULE_AUTHOR("IBM Corporation");
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MODULE_DESCRIPTION("Cryptographic Coprocessor (message type 6), " \
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"Copyright IBM Corp. 2001, 2012");
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MODULE_LICENSE("GPL");
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/**
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* CPRB
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* Note that all shorts, ints and longs are little-endian.
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* All pointer fields are 32-bits long, and mean nothing
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*
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* A request CPRB is followed by a request_parameter_block.
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*
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* The request (or reply) parameter block is organized thus:
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* function code
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* VUD block
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* key block
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*/
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struct CPRB {
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unsigned short cprb_len; /* CPRB length */
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unsigned char cprb_ver_id; /* CPRB version id. */
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unsigned char pad_000; /* Alignment pad byte. */
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unsigned char srpi_rtcode[4]; /* SRPI return code LELONG */
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unsigned char srpi_verb; /* SRPI verb type */
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unsigned char flags; /* flags */
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unsigned char func_id[2]; /* function id */
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unsigned char checkpoint_flag; /* */
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unsigned char resv2; /* reserved */
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unsigned short req_parml; /* request parameter buffer */
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/* length 16-bit little endian */
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unsigned char req_parmp[4]; /* request parameter buffer *
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* pointer (means nothing: the *
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* parameter buffer follows *
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* the CPRB). */
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unsigned char req_datal[4]; /* request data buffer */
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/* length ULELONG */
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unsigned char req_datap[4]; /* request data buffer */
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/* pointer */
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unsigned short rpl_parml; /* reply parameter buffer */
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/* length 16-bit little endian */
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unsigned char pad_001[2]; /* Alignment pad bytes. ULESHORT */
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unsigned char rpl_parmp[4]; /* reply parameter buffer *
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* pointer (means nothing: the *
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* parameter buffer follows *
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* the CPRB). */
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unsigned char rpl_datal[4]; /* reply data buffer len ULELONG */
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unsigned char rpl_datap[4]; /* reply data buffer */
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/* pointer */
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unsigned short ccp_rscode; /* server reason code ULESHORT */
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unsigned short ccp_rtcode; /* server return code ULESHORT */
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unsigned char repd_parml[2]; /* replied parameter len ULESHORT*/
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unsigned char mac_data_len[2]; /* Mac Data Length ULESHORT */
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unsigned char repd_datal[4]; /* replied data length ULELONG */
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unsigned char req_pc[2]; /* PC identifier */
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unsigned char res_origin[8]; /* resource origin */
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unsigned char mac_value[8]; /* Mac Value */
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unsigned char logon_id[8]; /* Logon Identifier */
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unsigned char usage_domain[2]; /* cdx */
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unsigned char resv3[18]; /* reserved for requestor */
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unsigned short svr_namel; /* server name length ULESHORT */
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unsigned char svr_name[8]; /* server name */
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} __packed;
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struct function_and_rules_block {
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unsigned char function_code[2];
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unsigned short ulen;
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unsigned char only_rule[8];
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} __packed;
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/**
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* The following is used to initialize the CPRBX passed to the CEXxC/CEXxP
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* card in a type6 message. The 3 fields that must be filled in at execution
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* time are req_parml, rpl_parml and usage_domain.
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* Everything about this interface is ascii/big-endian, since the
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* device does *not* have 'Intel inside'.
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*
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* The CPRBX is followed immediately by the parm block.
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* The parm block contains:
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* - function code ('PD' 0x5044 or 'PK' 0x504B)
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* - rule block (one of:)
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* + 0x000A 'PKCS-1.2' (MCL2 'PD')
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* + 0x000A 'ZERO-PAD' (MCL2 'PK')
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* + 0x000A 'ZERO-PAD' (MCL3 'PD' or CEX2C 'PD')
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* + 0x000A 'MRP ' (MCL3 'PK' or CEX2C 'PK')
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* - VUD block
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*/
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static const struct CPRBX static_cprbx = {
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.cprb_len = 0x00DC,
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.cprb_ver_id = 0x02,
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.func_id = {0x54, 0x32},
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};
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int speed_idx_cca(int req_type)
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{
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switch (req_type) {
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case 0x4142:
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case 0x4149:
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case 0x414D:
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case 0x4341:
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case 0x4344:
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case 0x4354:
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case 0x4358:
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case 0x444B:
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case 0x4558:
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case 0x4643:
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case 0x4651:
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case 0x4C47:
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case 0x4C4B:
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case 0x4C51:
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case 0x4F48:
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case 0x504F:
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case 0x5053:
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case 0x5058:
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case 0x5343:
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case 0x5344:
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case 0x5345:
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case 0x5350:
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return LOW;
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case 0x414B:
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case 0x4345:
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case 0x4349:
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case 0x434D:
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case 0x4847:
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case 0x4849:
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case 0x484D:
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case 0x4850:
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case 0x4851:
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case 0x4954:
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case 0x4958:
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case 0x4B43:
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case 0x4B44:
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case 0x4B45:
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case 0x4B47:
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case 0x4B48:
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case 0x4B49:
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case 0x4B4E:
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case 0x4B50:
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case 0x4B52:
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case 0x4B54:
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case 0x4B58:
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case 0x4D50:
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case 0x4D53:
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case 0x4D56:
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case 0x4D58:
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case 0x5044:
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case 0x5045:
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case 0x5046:
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case 0x5047:
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case 0x5049:
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case 0x504B:
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case 0x504D:
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case 0x5254:
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case 0x5347:
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case 0x5349:
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case 0x534B:
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case 0x534D:
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case 0x5356:
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case 0x5358:
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case 0x5443:
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case 0x544B:
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case 0x5647:
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return HIGH;
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default:
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return MEDIUM;
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}
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}
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int speed_idx_ep11(int req_type)
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{
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switch (req_type) {
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case 1:
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case 2:
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case 36:
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case 37:
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case 38:
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case 39:
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case 40:
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return LOW;
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case 17:
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case 18:
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case 19:
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case 20:
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case 21:
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case 22:
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case 26:
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case 30:
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case 31:
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case 32:
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case 33:
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case 34:
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case 35:
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return HIGH;
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default:
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return MEDIUM;
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}
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}
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/**
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* Convert a ICAMEX message to a type6 MEX message.
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*
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* @zq: crypto device pointer
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* @ap_msg: pointer to AP message
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* @mex: pointer to user input data
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*
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* Returns 0 on success or negative errno value.
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*/
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static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_queue *zq,
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struct ap_message *ap_msg,
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struct ica_rsa_modexpo *mex)
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{
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static struct type6_hdr static_type6_hdrX = {
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.type = 0x06,
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.offset1 = 0x00000058,
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.agent_id = {'C', 'A',},
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.function_code = {'P', 'K'},
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};
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static struct function_and_rules_block static_pke_fnr = {
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.function_code = {'P', 'K'},
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.ulen = 10,
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.only_rule = {'M', 'R', 'P', ' ', ' ', ' ', ' ', ' '}
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};
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struct {
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struct type6_hdr hdr;
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struct CPRBX cprbx;
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struct function_and_rules_block fr;
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unsigned short length;
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char text[0];
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} __packed * msg = ap_msg->msg;
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int size;
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/*
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* The inputdatalength was a selection criteria in the dispatching
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* function zcrypt_rsa_modexpo(). However, make sure the following
|
* copy_from_user() never exceeds the allocated buffer space.
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*/
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if (WARN_ON_ONCE(mex->inputdatalength > PAGE_SIZE))
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return -EINVAL;
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/* VUD.ciphertext */
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msg->length = mex->inputdatalength + 2;
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if (copy_from_user(msg->text, mex->inputdata, mex->inputdatalength))
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return -EFAULT;
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/* Set up key which is located after the variable length text. */
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size = zcrypt_type6_mex_key_en(mex, msg->text+mex->inputdatalength);
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if (size < 0)
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return size;
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size += sizeof(*msg) + mex->inputdatalength;
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/* message header, cprbx and f&r */
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msg->hdr = static_type6_hdrX;
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msg->hdr.ToCardLen1 = size - sizeof(msg->hdr);
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msg->hdr.FromCardLen1 = CEXXC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr);
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msg->cprbx = static_cprbx;
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msg->cprbx.domain = AP_QID_QUEUE(zq->queue->qid);
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msg->cprbx.rpl_msgbl = msg->hdr.FromCardLen1;
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msg->fr = static_pke_fnr;
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msg->cprbx.req_parml = size - sizeof(msg->hdr) - sizeof(msg->cprbx);
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ap_msg->len = size;
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return 0;
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}
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/**
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* Convert a ICACRT message to a type6 CRT message.
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*
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* @zq: crypto device pointer
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* @ap_msg: pointer to AP message
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* @crt: pointer to user input data
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*
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* Returns 0 on success or negative errno value.
|
*/
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static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_queue *zq,
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struct ap_message *ap_msg,
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struct ica_rsa_modexpo_crt *crt)
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{
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static struct type6_hdr static_type6_hdrX = {
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.type = 0x06,
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.offset1 = 0x00000058,
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.agent_id = {'C', 'A',},
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.function_code = {'P', 'D'},
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};
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static struct function_and_rules_block static_pkd_fnr = {
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.function_code = {'P', 'D'},
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.ulen = 10,
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.only_rule = {'Z', 'E', 'R', 'O', '-', 'P', 'A', 'D'}
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};
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struct {
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struct type6_hdr hdr;
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struct CPRBX cprbx;
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struct function_and_rules_block fr;
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unsigned short length;
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char text[0];
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} __packed * msg = ap_msg->msg;
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int size;
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/*
|
* The inputdatalength was a selection criteria in the dispatching
|
* function zcrypt_rsa_crt(). However, make sure the following
|
* copy_from_user() never exceeds the allocated buffer space.
|
*/
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if (WARN_ON_ONCE(crt->inputdatalength > PAGE_SIZE))
|
return -EINVAL;
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/* VUD.ciphertext */
|
msg->length = crt->inputdatalength + 2;
|
if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength))
|
return -EFAULT;
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|
/* Set up key which is located after the variable length text. */
|
size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength);
|
if (size < 0)
|
return size;
|
size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */
|
|
/* message header, cprbx and f&r */
|
msg->hdr = static_type6_hdrX;
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msg->hdr.ToCardLen1 = size - sizeof(msg->hdr);
|
msg->hdr.FromCardLen1 = CEXXC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr);
|
|
msg->cprbx = static_cprbx;
|
msg->cprbx.domain = AP_QID_QUEUE(zq->queue->qid);
|
msg->cprbx.req_parml = msg->cprbx.rpl_msgbl =
|
size - sizeof(msg->hdr) - sizeof(msg->cprbx);
|
|
msg->fr = static_pkd_fnr;
|
|
ap_msg->len = size;
|
return 0;
|
}
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/**
|
* Convert a XCRB message to a type6 CPRB message.
|
*
|
* @zq: crypto device pointer
|
* @ap_msg: pointer to AP message
|
* @xcRB: pointer to user input data
|
*
|
* Returns 0 on success or -EFAULT, -EINVAL.
|
*/
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struct type86_fmt2_msg {
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struct type86_hdr hdr;
|
struct type86_fmt2_ext fmt2;
|
} __packed;
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|
static int XCRB_msg_to_type6CPRB_msgX(bool userspace, struct ap_message *ap_msg,
|
struct ica_xcRB *xcRB,
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unsigned int *fcode,
|
unsigned short **dom)
|
{
|
static struct type6_hdr static_type6_hdrX = {
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.type = 0x06,
|
.offset1 = 0x00000058,
|
};
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struct {
|
struct type6_hdr hdr;
|
struct CPRBX cprbx;
|
} __packed * msg = ap_msg->msg;
|
|
int rcblen = CEIL4(xcRB->request_control_blk_length);
|
int replylen, req_sumlen, resp_sumlen;
|
char *req_data = ap_msg->msg + sizeof(struct type6_hdr) + rcblen;
|
char *function_code;
|
|
if (CEIL4(xcRB->request_control_blk_length) <
|
xcRB->request_control_blk_length)
|
return -EINVAL; /* overflow after alignment*/
|
|
/* length checks */
|
ap_msg->len = sizeof(struct type6_hdr) +
|
CEIL4(xcRB->request_control_blk_length) +
|
xcRB->request_data_length;
|
if (ap_msg->len > MSGTYPE06_MAX_MSG_SIZE)
|
return -EINVAL;
|
|
/*
|
* Overflow check
|
* sum must be greater (or equal) than the largest operand
|
*/
|
req_sumlen = CEIL4(xcRB->request_control_blk_length) +
|
xcRB->request_data_length;
|
if ((CEIL4(xcRB->request_control_blk_length) <=
|
xcRB->request_data_length) ?
|
(req_sumlen < xcRB->request_data_length) :
|
(req_sumlen < CEIL4(xcRB->request_control_blk_length))) {
|
return -EINVAL;
|
}
|
|
if (CEIL4(xcRB->reply_control_blk_length) <
|
xcRB->reply_control_blk_length)
|
return -EINVAL; /* overflow after alignment*/
|
|
replylen = sizeof(struct type86_fmt2_msg) +
|
CEIL4(xcRB->reply_control_blk_length) +
|
xcRB->reply_data_length;
|
if (replylen > MSGTYPE06_MAX_MSG_SIZE)
|
return -EINVAL;
|
|
/*
|
* Overflow check
|
* sum must be greater (or equal) than the largest operand
|
*/
|
resp_sumlen = CEIL4(xcRB->reply_control_blk_length) +
|
xcRB->reply_data_length;
|
if ((CEIL4(xcRB->reply_control_blk_length) <= xcRB->reply_data_length) ?
|
(resp_sumlen < xcRB->reply_data_length) :
|
(resp_sumlen < CEIL4(xcRB->reply_control_blk_length))) {
|
return -EINVAL;
|
}
|
|
/* prepare type6 header */
|
msg->hdr = static_type6_hdrX;
|
memcpy(msg->hdr.agent_id, &(xcRB->agent_ID), sizeof(xcRB->agent_ID));
|
msg->hdr.ToCardLen1 = xcRB->request_control_blk_length;
|
if (xcRB->request_data_length) {
|
msg->hdr.offset2 = msg->hdr.offset1 + rcblen;
|
msg->hdr.ToCardLen2 = xcRB->request_data_length;
|
}
|
msg->hdr.FromCardLen1 = xcRB->reply_control_blk_length;
|
msg->hdr.FromCardLen2 = xcRB->reply_data_length;
|
|
/* prepare CPRB */
|
if (z_copy_from_user(userspace, &(msg->cprbx), xcRB->request_control_blk_addr,
|
xcRB->request_control_blk_length))
|
return -EFAULT;
|
if (msg->cprbx.cprb_len + sizeof(msg->hdr.function_code) >
|
xcRB->request_control_blk_length)
|
return -EINVAL;
|
function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len;
|
memcpy(msg->hdr.function_code, function_code,
|
sizeof(msg->hdr.function_code));
|
|
*fcode = (msg->hdr.function_code[0] << 8) | msg->hdr.function_code[1];
|
*dom = (unsigned short *)&msg->cprbx.domain;
|
|
if (memcmp(function_code, "US", 2) == 0
|
|| memcmp(function_code, "AU", 2) == 0)
|
ap_msg->flags |= AP_MSG_FLAG_SPECIAL;
|
|
#ifdef CONFIG_ZCRYPT_DEBUG
|
if (ap_msg->fi.flags & AP_FI_FLAG_TOGGLE_SPECIAL)
|
ap_msg->flags ^= AP_MSG_FLAG_SPECIAL;
|
#endif
|
|
/* copy data block */
|
if (xcRB->request_data_length &&
|
z_copy_from_user(userspace, req_data, xcRB->request_data_address,
|
xcRB->request_data_length))
|
return -EFAULT;
|
|
return 0;
|
}
|
|
static int xcrb_msg_to_type6_ep11cprb_msgx(bool userspace, struct ap_message *ap_msg,
|
struct ep11_urb *xcRB,
|
unsigned int *fcode)
|
{
|
unsigned int lfmt;
|
static struct type6_hdr static_type6_ep11_hdr = {
|
.type = 0x06,
|
.rqid = {0x00, 0x01},
|
.function_code = {0x00, 0x00},
|
.agent_id[0] = 0x58, /* {'X'} */
|
.agent_id[1] = 0x43, /* {'C'} */
|
.offset1 = 0x00000058,
|
};
|
|
struct {
|
struct type6_hdr hdr;
|
struct ep11_cprb cprbx;
|
unsigned char pld_tag; /* fixed value 0x30 */
|
unsigned char pld_lenfmt; /* payload length format */
|
} __packed * msg = ap_msg->msg;
|
|
struct pld_hdr {
|
unsigned char func_tag; /* fixed value 0x4 */
|
unsigned char func_len; /* fixed value 0x4 */
|
unsigned int func_val; /* function ID */
|
unsigned char dom_tag; /* fixed value 0x4 */
|
unsigned char dom_len; /* fixed value 0x4 */
|
unsigned int dom_val; /* domain id */
|
} __packed * payload_hdr = NULL;
|
|
if (CEIL4(xcRB->req_len) < xcRB->req_len)
|
return -EINVAL; /* overflow after alignment*/
|
|
/* length checks */
|
ap_msg->len = sizeof(struct type6_hdr) + xcRB->req_len;
|
if (CEIL4(xcRB->req_len) > MSGTYPE06_MAX_MSG_SIZE -
|
(sizeof(struct type6_hdr)))
|
return -EINVAL;
|
|
if (CEIL4(xcRB->resp_len) < xcRB->resp_len)
|
return -EINVAL; /* overflow after alignment*/
|
|
if (CEIL4(xcRB->resp_len) > MSGTYPE06_MAX_MSG_SIZE -
|
(sizeof(struct type86_fmt2_msg)))
|
return -EINVAL;
|
|
/* prepare type6 header */
|
msg->hdr = static_type6_ep11_hdr;
|
msg->hdr.ToCardLen1 = xcRB->req_len;
|
msg->hdr.FromCardLen1 = xcRB->resp_len;
|
|
/* Import CPRB data from the ioctl input parameter */
|
if (z_copy_from_user(userspace, &(msg->cprbx.cprb_len),
|
(char __force __user *)xcRB->req, xcRB->req_len)) {
|
return -EFAULT;
|
}
|
|
if ((msg->pld_lenfmt & 0x80) == 0x80) { /*ext.len.fmt 2 or 3*/
|
switch (msg->pld_lenfmt & 0x03) {
|
case 1:
|
lfmt = 2;
|
break;
|
case 2:
|
lfmt = 3;
|
break;
|
default:
|
return -EINVAL;
|
}
|
} else {
|
lfmt = 1; /* length format #1 */
|
}
|
payload_hdr = (struct pld_hdr *)((&(msg->pld_lenfmt))+lfmt);
|
*fcode = payload_hdr->func_val & 0xFFFF;
|
|
/* enable special processing based on the cprbs flags special bit */
|
if (msg->cprbx.flags & 0x20)
|
ap_msg->flags |= AP_MSG_FLAG_SPECIAL;
|
|
#ifdef CONFIG_ZCRYPT_DEBUG
|
if (ap_msg->fi.flags & AP_FI_FLAG_TOGGLE_SPECIAL)
|
ap_msg->flags ^= AP_MSG_FLAG_SPECIAL;
|
#endif
|
|
return 0;
|
}
|
|
/**
|
* Copy results from a type 86 ICA reply message back to user space.
|
*
|
* @zq: crypto device pointer
|
* @reply: reply AP message.
|
* @data: pointer to user output data
|
* @length: size of user output data
|
*
|
* Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error.
|
*/
|
struct type86x_reply {
|
struct type86_hdr hdr;
|
struct type86_fmt2_ext fmt2;
|
struct CPRBX cprbx;
|
unsigned char pad[4]; /* 4 byte function code/rules block ? */
|
unsigned short length;
|
char text[];
|
} __packed;
|
|
struct type86_ep11_reply {
|
struct type86_hdr hdr;
|
struct type86_fmt2_ext fmt2;
|
struct ep11_cprb cprbx;
|
} __packed;
|
|
static int convert_type86_ica(struct zcrypt_queue *zq,
|
struct ap_message *reply,
|
char __user *outputdata,
|
unsigned int outputdatalength)
|
{
|
static unsigned char static_pad[] = {
|
0x00, 0x02,
|
0x1B, 0x7B, 0x5D, 0xB5, 0x75, 0x01, 0x3D, 0xFD,
|
0x8D, 0xD1, 0xC7, 0x03, 0x2D, 0x09, 0x23, 0x57,
|
0x89, 0x49, 0xB9, 0x3F, 0xBB, 0x99, 0x41, 0x5B,
|
0x75, 0x21, 0x7B, 0x9D, 0x3B, 0x6B, 0x51, 0x39,
|
0xBB, 0x0D, 0x35, 0xB9, 0x89, 0x0F, 0x93, 0xA5,
|
0x0B, 0x47, 0xF1, 0xD3, 0xBB, 0xCB, 0xF1, 0x9D,
|
0x23, 0x73, 0x71, 0xFF, 0xF3, 0xF5, 0x45, 0xFB,
|
0x61, 0x29, 0x23, 0xFD, 0xF1, 0x29, 0x3F, 0x7F,
|
0x17, 0xB7, 0x1B, 0xA9, 0x19, 0xBD, 0x57, 0xA9,
|
0xD7, 0x95, 0xA3, 0xCB, 0xED, 0x1D, 0xDB, 0x45,
|
0x7D, 0x11, 0xD1, 0x51, 0x1B, 0xED, 0x71, 0xE9,
|
0xB1, 0xD1, 0xAB, 0xAB, 0x21, 0x2B, 0x1B, 0x9F,
|
0x3B, 0x9F, 0xF7, 0xF7, 0xBD, 0x63, 0xEB, 0xAD,
|
0xDF, 0xB3, 0x6F, 0x5B, 0xDB, 0x8D, 0xA9, 0x5D,
|
0xE3, 0x7D, 0x77, 0x49, 0x47, 0xF5, 0xA7, 0xFD,
|
0xAB, 0x2F, 0x27, 0x35, 0x77, 0xD3, 0x49, 0xC9,
|
0x09, 0xEB, 0xB1, 0xF9, 0xBF, 0x4B, 0xCB, 0x2B,
|
0xEB, 0xEB, 0x05, 0xFF, 0x7D, 0xC7, 0x91, 0x8B,
|
0x09, 0x83, 0xB9, 0xB9, 0x69, 0x33, 0x39, 0x6B,
|
0x79, 0x75, 0x19, 0xBF, 0xBB, 0x07, 0x1D, 0xBD,
|
0x29, 0xBF, 0x39, 0x95, 0x93, 0x1D, 0x35, 0xC7,
|
0xC9, 0x4D, 0xE5, 0x97, 0x0B, 0x43, 0x9B, 0xF1,
|
0x16, 0x93, 0x03, 0x1F, 0xA5, 0xFB, 0xDB, 0xF3,
|
0x27, 0x4F, 0x27, 0x61, 0x05, 0x1F, 0xB9, 0x23,
|
0x2F, 0xC3, 0x81, 0xA9, 0x23, 0x71, 0x55, 0x55,
|
0xEB, 0xED, 0x41, 0xE5, 0xF3, 0x11, 0xF1, 0x43,
|
0x69, 0x03, 0xBD, 0x0B, 0x37, 0x0F, 0x51, 0x8F,
|
0x0B, 0xB5, 0x89, 0x5B, 0x67, 0xA9, 0xD9, 0x4F,
|
0x01, 0xF9, 0x21, 0x77, 0x37, 0x73, 0x79, 0xC5,
|
0x7F, 0x51, 0xC1, 0xCF, 0x97, 0xA1, 0x75, 0xAD,
|
0x35, 0x9D, 0xD3, 0xD3, 0xA7, 0x9D, 0x5D, 0x41,
|
0x6F, 0x65, 0x1B, 0xCF, 0xA9, 0x87, 0x91, 0x09
|
};
|
struct type86x_reply *msg = reply->msg;
|
unsigned short service_rc, service_rs;
|
unsigned int reply_len, pad_len;
|
char *data;
|
|
service_rc = msg->cprbx.ccp_rtcode;
|
if (unlikely(service_rc != 0)) {
|
service_rs = msg->cprbx.ccp_rscode;
|
if ((service_rc == 8 && service_rs == 66) ||
|
(service_rc == 8 && service_rs == 65) ||
|
(service_rc == 8 && service_rs == 72) ||
|
(service_rc == 8 && service_rs == 770) ||
|
(service_rc == 12 && service_rs == 769)) {
|
ZCRYPT_DBF_WARN("dev=%02x.%04x rc/rs=%d/%d => rc=EINVAL\n",
|
AP_QID_CARD(zq->queue->qid),
|
AP_QID_QUEUE(zq->queue->qid),
|
(int) service_rc, (int) service_rs);
|
return -EINVAL;
|
}
|
zq->online = 0;
|
pr_err("Crypto dev=%02x.%04x rc/rs=%d/%d online=0 rc=EAGAIN\n",
|
AP_QID_CARD(zq->queue->qid),
|
AP_QID_QUEUE(zq->queue->qid),
|
(int) service_rc, (int) service_rs);
|
ZCRYPT_DBF_ERR("dev=%02x.%04x rc/rs=%d/%d => online=0 rc=EAGAIN\n",
|
AP_QID_CARD(zq->queue->qid),
|
AP_QID_QUEUE(zq->queue->qid),
|
(int) service_rc, (int) service_rs);
|
return -EAGAIN;
|
}
|
data = msg->text;
|
reply_len = msg->length - 2;
|
if (reply_len > outputdatalength)
|
return -EINVAL;
|
/*
|
* For all encipher requests, the length of the ciphertext (reply_len)
|
* will always equal the modulus length. For MEX decipher requests
|
* the output needs to get padded. Minimum pad size is 10.
|
*
|
* Currently, the cases where padding will be added is for:
|
* - PCIXCC_MCL2 using a CRT form token (since PKD didn't support
|
* ZERO-PAD and CRT is only supported for PKD requests)
|
* - PCICC, always
|
*/
|
pad_len = outputdatalength - reply_len;
|
if (pad_len > 0) {
|
if (pad_len < 10)
|
return -EINVAL;
|
/* 'restore' padding left in the CEXXC card. */
|
if (copy_to_user(outputdata, static_pad, pad_len - 1))
|
return -EFAULT;
|
if (put_user(0, outputdata + pad_len - 1))
|
return -EFAULT;
|
}
|
/* Copy the crypto response to user space. */
|
if (copy_to_user(outputdata + pad_len, data, reply_len))
|
return -EFAULT;
|
return 0;
|
}
|
|
/**
|
* Copy results from a type 86 XCRB reply message back to user space.
|
*
|
* @zq: crypto device pointer
|
* @reply: reply AP message.
|
* @xcRB: pointer to XCRB
|
*
|
* Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error.
|
*/
|
static int convert_type86_xcrb(bool userspace, struct zcrypt_queue *zq,
|
struct ap_message *reply,
|
struct ica_xcRB *xcRB)
|
{
|
struct type86_fmt2_msg *msg = reply->msg;
|
char *data = reply->msg;
|
|
/* Copy CPRB to user */
|
if (z_copy_to_user(userspace, xcRB->reply_control_blk_addr,
|
data + msg->fmt2.offset1, msg->fmt2.count1))
|
return -EFAULT;
|
xcRB->reply_control_blk_length = msg->fmt2.count1;
|
|
/* Copy data buffer to user */
|
if (msg->fmt2.count2)
|
if (z_copy_to_user(userspace, xcRB->reply_data_addr,
|
data + msg->fmt2.offset2, msg->fmt2.count2))
|
return -EFAULT;
|
xcRB->reply_data_length = msg->fmt2.count2;
|
return 0;
|
}
|
|
/**
|
* Copy results from a type 86 EP11 XCRB reply message back to user space.
|
*
|
* @zq: crypto device pointer
|
* @reply: reply AP message.
|
* @xcRB: pointer to EP11 user request block
|
*
|
* Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error.
|
*/
|
static int convert_type86_ep11_xcrb(bool userspace, struct zcrypt_queue *zq,
|
struct ap_message *reply,
|
struct ep11_urb *xcRB)
|
{
|
struct type86_fmt2_msg *msg = reply->msg;
|
char *data = reply->msg;
|
|
if (xcRB->resp_len < msg->fmt2.count1)
|
return -EINVAL;
|
|
/* Copy response CPRB to user */
|
if (z_copy_to_user(userspace, (char __force __user *)xcRB->resp,
|
data + msg->fmt2.offset1, msg->fmt2.count1))
|
return -EFAULT;
|
xcRB->resp_len = msg->fmt2.count1;
|
return 0;
|
}
|
|
static int convert_type86_rng(struct zcrypt_queue *zq,
|
struct ap_message *reply,
|
char *buffer)
|
{
|
struct {
|
struct type86_hdr hdr;
|
struct type86_fmt2_ext fmt2;
|
struct CPRBX cprbx;
|
} __packed * msg = reply->msg;
|
char *data = reply->msg;
|
|
if (msg->cprbx.ccp_rtcode != 0 || msg->cprbx.ccp_rscode != 0)
|
return -EINVAL;
|
memcpy(buffer, data + msg->fmt2.offset2, msg->fmt2.count2);
|
return msg->fmt2.count2;
|
}
|
|
static int convert_response_ica(struct zcrypt_queue *zq,
|
struct ap_message *reply,
|
char __user *outputdata,
|
unsigned int outputdatalength)
|
{
|
struct type86x_reply *msg = reply->msg;
|
|
switch (msg->hdr.type) {
|
case TYPE82_RSP_CODE:
|
case TYPE88_RSP_CODE:
|
return convert_error(zq, reply);
|
case TYPE86_RSP_CODE:
|
if (msg->cprbx.ccp_rtcode &&
|
(msg->cprbx.ccp_rscode == 0x14f) &&
|
(outputdatalength > 256)) {
|
if (zq->zcard->max_exp_bit_length <= 17) {
|
zq->zcard->max_exp_bit_length = 17;
|
return -EAGAIN;
|
} else
|
return -EINVAL;
|
}
|
if (msg->hdr.reply_code)
|
return convert_error(zq, reply);
|
if (msg->cprbx.cprb_ver_id == 0x02)
|
return convert_type86_ica(zq, reply,
|
outputdata, outputdatalength);
|
fallthrough; /* wrong cprb version is an unknown response */
|
default:
|
/* Unknown response type, this should NEVER EVER happen */
|
zq->online = 0;
|
pr_err("Crypto dev=%02x.%04x unknown response type 0x%02x => online=0 rc=EAGAIN\n",
|
AP_QID_CARD(zq->queue->qid),
|
AP_QID_QUEUE(zq->queue->qid),
|
(int) msg->hdr.type);
|
ZCRYPT_DBF_ERR("dev=%02x.%04x unknown response type 0x%02x => online=0 rc=EAGAIN\n",
|
AP_QID_CARD(zq->queue->qid),
|
AP_QID_QUEUE(zq->queue->qid),
|
(int) msg->hdr.type);
|
return -EAGAIN;
|
}
|
}
|
|
static int convert_response_xcrb(bool userspace, struct zcrypt_queue *zq,
|
struct ap_message *reply,
|
struct ica_xcRB *xcRB)
|
{
|
struct type86x_reply *msg = reply->msg;
|
|
switch (msg->hdr.type) {
|
case TYPE82_RSP_CODE:
|
case TYPE88_RSP_CODE:
|
xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
|
return convert_error(zq, reply);
|
case TYPE86_RSP_CODE:
|
if (msg->hdr.reply_code) {
|
memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32));
|
return convert_error(zq, reply);
|
}
|
if (msg->cprbx.cprb_ver_id == 0x02)
|
return convert_type86_xcrb(userspace, zq, reply, xcRB);
|
fallthrough; /* wrong cprb version is an unknown response */
|
default: /* Unknown response type, this should NEVER EVER happen */
|
xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
|
zq->online = 0;
|
pr_err("Crypto dev=%02x.%04x unknown response type 0x%02x => online=0 rc=EAGAIN\n",
|
AP_QID_CARD(zq->queue->qid),
|
AP_QID_QUEUE(zq->queue->qid),
|
(int) msg->hdr.type);
|
ZCRYPT_DBF_ERR("dev=%02x.%04x unknown response type 0x%02x => online=0 rc=EAGAIN\n",
|
AP_QID_CARD(zq->queue->qid),
|
AP_QID_QUEUE(zq->queue->qid),
|
(int) msg->hdr.type);
|
return -EAGAIN;
|
}
|
}
|
|
static int convert_response_ep11_xcrb(bool userspace, struct zcrypt_queue *zq,
|
struct ap_message *reply, struct ep11_urb *xcRB)
|
{
|
struct type86_ep11_reply *msg = reply->msg;
|
|
switch (msg->hdr.type) {
|
case TYPE82_RSP_CODE:
|
case TYPE87_RSP_CODE:
|
return convert_error(zq, reply);
|
case TYPE86_RSP_CODE:
|
if (msg->hdr.reply_code)
|
return convert_error(zq, reply);
|
if (msg->cprbx.cprb_ver_id == 0x04)
|
return convert_type86_ep11_xcrb(userspace, zq, reply, xcRB);
|
fallthrough; /* wrong cprb version is an unknown resp */
|
default: /* Unknown response type, this should NEVER EVER happen */
|
zq->online = 0;
|
pr_err("Crypto dev=%02x.%04x unknown response type 0x%02x => online=0 rc=EAGAIN\n",
|
AP_QID_CARD(zq->queue->qid),
|
AP_QID_QUEUE(zq->queue->qid),
|
(int) msg->hdr.type);
|
ZCRYPT_DBF_ERR("dev=%02x.%04x unknown response type 0x%02x => online=0 rc=EAGAIN\n",
|
AP_QID_CARD(zq->queue->qid),
|
AP_QID_QUEUE(zq->queue->qid),
|
(int) msg->hdr.type);
|
return -EAGAIN;
|
}
|
}
|
|
static int convert_response_rng(struct zcrypt_queue *zq,
|
struct ap_message *reply,
|
char *data)
|
{
|
struct type86x_reply *msg = reply->msg;
|
|
switch (msg->hdr.type) {
|
case TYPE82_RSP_CODE:
|
case TYPE88_RSP_CODE:
|
return -EINVAL;
|
case TYPE86_RSP_CODE:
|
if (msg->hdr.reply_code)
|
return -EINVAL;
|
if (msg->cprbx.cprb_ver_id == 0x02)
|
return convert_type86_rng(zq, reply, data);
|
fallthrough; /* wrong cprb version is an unknown response */
|
default: /* Unknown response type, this should NEVER EVER happen */
|
zq->online = 0;
|
pr_err("Crypto dev=%02x.%04x unknown response type 0x%02x => online=0 rc=EAGAIN\n",
|
AP_QID_CARD(zq->queue->qid),
|
AP_QID_QUEUE(zq->queue->qid),
|
(int) msg->hdr.type);
|
ZCRYPT_DBF_ERR("dev=%02x.%04x unknown response type 0x%02x => online=0 rc=EAGAIN\n",
|
AP_QID_CARD(zq->queue->qid),
|
AP_QID_QUEUE(zq->queue->qid),
|
(int) msg->hdr.type);
|
return -EAGAIN;
|
}
|
}
|
|
/**
|
* This function is called from the AP bus code after a crypto request
|
* "msg" has finished with the reply message "reply".
|
* It is called from tasklet context.
|
* @aq: pointer to the AP queue
|
* @msg: pointer to the AP message
|
* @reply: pointer to the AP reply message
|
*/
|
static void zcrypt_msgtype6_receive(struct ap_queue *aq,
|
struct ap_message *msg,
|
struct ap_message *reply)
|
{
|
static struct error_hdr error_reply = {
|
.type = TYPE82_RSP_CODE,
|
.reply_code = REP82_ERROR_MACHINE_FAILURE,
|
};
|
struct response_type *resp_type =
|
(struct response_type *) msg->private;
|
struct type86x_reply *t86r;
|
int len;
|
|
/* Copy the reply message to the request message buffer. */
|
if (!reply)
|
goto out; /* ap_msg->rc indicates the error */
|
t86r = reply->msg;
|
if (t86r->hdr.type == TYPE86_RSP_CODE &&
|
t86r->cprbx.cprb_ver_id == 0x02) {
|
switch (resp_type->type) {
|
case CEXXC_RESPONSE_TYPE_ICA:
|
len = sizeof(struct type86x_reply) + t86r->length - 2;
|
len = min_t(int, CEXXC_MAX_ICA_RESPONSE_SIZE, len);
|
memcpy(msg->msg, reply->msg, len);
|
break;
|
case CEXXC_RESPONSE_TYPE_XCRB:
|
len = t86r->fmt2.offset2 + t86r->fmt2.count2;
|
len = min_t(int, MSGTYPE06_MAX_MSG_SIZE, len);
|
memcpy(msg->msg, reply->msg, len);
|
break;
|
default:
|
memcpy(msg->msg, &error_reply, sizeof(error_reply));
|
}
|
} else
|
memcpy(msg->msg, reply->msg, sizeof(error_reply));
|
out:
|
complete(&(resp_type->work));
|
}
|
|
/**
|
* This function is called from the AP bus code after a crypto request
|
* "msg" has finished with the reply message "reply".
|
* It is called from tasklet context.
|
* @aq: pointer to the AP queue
|
* @msg: pointer to the AP message
|
* @reply: pointer to the AP reply message
|
*/
|
static void zcrypt_msgtype6_receive_ep11(struct ap_queue *aq,
|
struct ap_message *msg,
|
struct ap_message *reply)
|
{
|
static struct error_hdr error_reply = {
|
.type = TYPE82_RSP_CODE,
|
.reply_code = REP82_ERROR_MACHINE_FAILURE,
|
};
|
struct response_type *resp_type =
|
(struct response_type *)msg->private;
|
struct type86_ep11_reply *t86r;
|
int len;
|
|
/* Copy the reply message to the request message buffer. */
|
if (!reply)
|
goto out; /* ap_msg->rc indicates the error */
|
t86r = reply->msg;
|
if (t86r->hdr.type == TYPE86_RSP_CODE &&
|
t86r->cprbx.cprb_ver_id == 0x04) {
|
switch (resp_type->type) {
|
case CEXXC_RESPONSE_TYPE_EP11:
|
len = t86r->fmt2.offset1 + t86r->fmt2.count1;
|
len = min_t(int, MSGTYPE06_MAX_MSG_SIZE, len);
|
memcpy(msg->msg, reply->msg, len);
|
break;
|
default:
|
memcpy(msg->msg, &error_reply, sizeof(error_reply));
|
}
|
} else {
|
memcpy(msg->msg, reply->msg, sizeof(error_reply));
|
}
|
out:
|
complete(&(resp_type->work));
|
}
|
|
static atomic_t zcrypt_step = ATOMIC_INIT(0);
|
|
/**
|
* The request distributor calls this function if it picked the CEXxC
|
* device to handle a modexpo request.
|
* @zq: pointer to zcrypt_queue structure that identifies the
|
* CEXxC device to the request distributor
|
* @mex: pointer to the modexpo request buffer
|
*/
|
static long zcrypt_msgtype6_modexpo(struct zcrypt_queue *zq,
|
struct ica_rsa_modexpo *mex,
|
struct ap_message *ap_msg)
|
{
|
struct response_type resp_type = {
|
.type = CEXXC_RESPONSE_TYPE_ICA,
|
};
|
int rc;
|
|
ap_msg->msg = (void *) get_zeroed_page(GFP_KERNEL);
|
if (!ap_msg->msg)
|
return -ENOMEM;
|
ap_msg->receive = zcrypt_msgtype6_receive;
|
ap_msg->psmid = (((unsigned long long) current->pid) << 32) +
|
atomic_inc_return(&zcrypt_step);
|
ap_msg->private = &resp_type;
|
rc = ICAMEX_msg_to_type6MEX_msgX(zq, ap_msg, mex);
|
if (rc)
|
goto out_free;
|
init_completion(&resp_type.work);
|
rc = ap_queue_message(zq->queue, ap_msg);
|
if (rc)
|
goto out_free;
|
rc = wait_for_completion_interruptible(&resp_type.work);
|
if (rc == 0) {
|
rc = ap_msg->rc;
|
if (rc == 0)
|
rc = convert_response_ica(zq, ap_msg,
|
mex->outputdata,
|
mex->outputdatalength);
|
} else
|
/* Signal pending. */
|
ap_cancel_message(zq->queue, ap_msg);
|
out_free:
|
free_page((unsigned long) ap_msg->msg);
|
ap_msg->private = NULL;
|
ap_msg->msg = NULL;
|
return rc;
|
}
|
|
/**
|
* The request distributor calls this function if it picked the CEXxC
|
* device to handle a modexpo_crt request.
|
* @zq: pointer to zcrypt_queue structure that identifies the
|
* CEXxC device to the request distributor
|
* @crt: pointer to the modexpoc_crt request buffer
|
*/
|
static long zcrypt_msgtype6_modexpo_crt(struct zcrypt_queue *zq,
|
struct ica_rsa_modexpo_crt *crt,
|
struct ap_message *ap_msg)
|
{
|
struct response_type resp_type = {
|
.type = CEXXC_RESPONSE_TYPE_ICA,
|
};
|
int rc;
|
|
ap_msg->msg = (void *) get_zeroed_page(GFP_KERNEL);
|
if (!ap_msg->msg)
|
return -ENOMEM;
|
ap_msg->receive = zcrypt_msgtype6_receive;
|
ap_msg->psmid = (((unsigned long long) current->pid) << 32) +
|
atomic_inc_return(&zcrypt_step);
|
ap_msg->private = &resp_type;
|
rc = ICACRT_msg_to_type6CRT_msgX(zq, ap_msg, crt);
|
if (rc)
|
goto out_free;
|
init_completion(&resp_type.work);
|
rc = ap_queue_message(zq->queue, ap_msg);
|
if (rc)
|
goto out_free;
|
rc = wait_for_completion_interruptible(&resp_type.work);
|
if (rc == 0) {
|
rc = ap_msg->rc;
|
if (rc == 0)
|
rc = convert_response_ica(zq, ap_msg,
|
crt->outputdata,
|
crt->outputdatalength);
|
} else {
|
/* Signal pending. */
|
ap_cancel_message(zq->queue, ap_msg);
|
}
|
out_free:
|
free_page((unsigned long) ap_msg->msg);
|
ap_msg->private = NULL;
|
ap_msg->msg = NULL;
|
return rc;
|
}
|
|
/**
|
* Fetch function code from cprb.
|
* Extracting the fc requires to copy the cprb from userspace.
|
* So this function allocates memory and needs an ap_msg prepared
|
* by the caller with ap_init_message(). Also the caller has to
|
* make sure ap_release_message() is always called even on failure.
|
*/
|
unsigned int get_cprb_fc(bool userspace, struct ica_xcRB *xcRB,
|
struct ap_message *ap_msg,
|
unsigned int *func_code, unsigned short **dom)
|
{
|
struct response_type resp_type = {
|
.type = CEXXC_RESPONSE_TYPE_XCRB,
|
};
|
|
ap_msg->msg = kmalloc(MSGTYPE06_MAX_MSG_SIZE, GFP_KERNEL);
|
if (!ap_msg->msg)
|
return -ENOMEM;
|
ap_msg->receive = zcrypt_msgtype6_receive;
|
ap_msg->psmid = (((unsigned long long) current->pid) << 32) +
|
atomic_inc_return(&zcrypt_step);
|
ap_msg->private = kmemdup(&resp_type, sizeof(resp_type), GFP_KERNEL);
|
if (!ap_msg->private)
|
return -ENOMEM;
|
return XCRB_msg_to_type6CPRB_msgX(userspace, ap_msg, xcRB, func_code, dom);
|
}
|
|
/**
|
* The request distributor calls this function if it picked the CEXxC
|
* device to handle a send_cprb request.
|
* @zq: pointer to zcrypt_queue structure that identifies the
|
* CEXxC device to the request distributor
|
* @xcRB: pointer to the send_cprb request buffer
|
*/
|
static long zcrypt_msgtype6_send_cprb(bool userspace, struct zcrypt_queue *zq,
|
struct ica_xcRB *xcRB,
|
struct ap_message *ap_msg)
|
{
|
int rc;
|
struct response_type *rtype = (struct response_type *)(ap_msg->private);
|
|
init_completion(&rtype->work);
|
rc = ap_queue_message(zq->queue, ap_msg);
|
if (rc)
|
goto out;
|
rc = wait_for_completion_interruptible(&rtype->work);
|
if (rc == 0) {
|
rc = ap_msg->rc;
|
if (rc == 0)
|
rc = convert_response_xcrb(userspace, zq, ap_msg, xcRB);
|
} else
|
/* Signal pending. */
|
ap_cancel_message(zq->queue, ap_msg);
|
out:
|
return rc;
|
}
|
|
/**
|
* Fetch function code from ep11 cprb.
|
* Extracting the fc requires to copy the ep11 cprb from userspace.
|
* So this function allocates memory and needs an ap_msg prepared
|
* by the caller with ap_init_message(). Also the caller has to
|
* make sure ap_release_message() is always called even on failure.
|
*/
|
unsigned int get_ep11cprb_fc(bool userspace, struct ep11_urb *xcrb,
|
struct ap_message *ap_msg,
|
unsigned int *func_code)
|
{
|
struct response_type resp_type = {
|
.type = CEXXC_RESPONSE_TYPE_EP11,
|
};
|
|
ap_msg->msg = kmalloc(MSGTYPE06_MAX_MSG_SIZE, GFP_KERNEL);
|
if (!ap_msg->msg)
|
return -ENOMEM;
|
ap_msg->receive = zcrypt_msgtype6_receive_ep11;
|
ap_msg->psmid = (((unsigned long long) current->pid) << 32) +
|
atomic_inc_return(&zcrypt_step);
|
ap_msg->private = kmemdup(&resp_type, sizeof(resp_type), GFP_KERNEL);
|
if (!ap_msg->private)
|
return -ENOMEM;
|
return xcrb_msg_to_type6_ep11cprb_msgx(userspace, ap_msg, xcrb, func_code);
|
}
|
|
/**
|
* The request distributor calls this function if it picked the CEX4P
|
* device to handle a send_ep11_cprb request.
|
* @zq: pointer to zcrypt_queue structure that identifies the
|
* CEX4P device to the request distributor
|
* @xcRB: pointer to the ep11 user request block
|
*/
|
static long zcrypt_msgtype6_send_ep11_cprb(bool userspace, struct zcrypt_queue *zq,
|
struct ep11_urb *xcrb,
|
struct ap_message *ap_msg)
|
{
|
int rc;
|
unsigned int lfmt;
|
struct response_type *rtype = (struct response_type *)(ap_msg->private);
|
struct {
|
struct type6_hdr hdr;
|
struct ep11_cprb cprbx;
|
unsigned char pld_tag; /* fixed value 0x30 */
|
unsigned char pld_lenfmt; /* payload length format */
|
} __packed * msg = ap_msg->msg;
|
struct pld_hdr {
|
unsigned char func_tag; /* fixed value 0x4 */
|
unsigned char func_len; /* fixed value 0x4 */
|
unsigned int func_val; /* function ID */
|
unsigned char dom_tag; /* fixed value 0x4 */
|
unsigned char dom_len; /* fixed value 0x4 */
|
unsigned int dom_val; /* domain id */
|
} __packed * payload_hdr = NULL;
|
|
|
/**
|
* The target domain field within the cprb body/payload block will be
|
* replaced by the usage domain for non-management commands only.
|
* Therefore we check the first bit of the 'flags' parameter for
|
* management command indication.
|
* 0 - non management command
|
* 1 - management command
|
*/
|
if (!((msg->cprbx.flags & 0x80) == 0x80)) {
|
msg->cprbx.target_id = (unsigned int)
|
AP_QID_QUEUE(zq->queue->qid);
|
|
if ((msg->pld_lenfmt & 0x80) == 0x80) { /*ext.len.fmt 2 or 3*/
|
switch (msg->pld_lenfmt & 0x03) {
|
case 1:
|
lfmt = 2;
|
break;
|
case 2:
|
lfmt = 3;
|
break;
|
default:
|
return -EINVAL;
|
}
|
} else {
|
lfmt = 1; /* length format #1 */
|
}
|
payload_hdr = (struct pld_hdr *)((&(msg->pld_lenfmt))+lfmt);
|
payload_hdr->dom_val = (unsigned int)
|
AP_QID_QUEUE(zq->queue->qid);
|
}
|
|
init_completion(&rtype->work);
|
rc = ap_queue_message(zq->queue, ap_msg);
|
if (rc)
|
goto out;
|
rc = wait_for_completion_interruptible(&rtype->work);
|
if (rc == 0) {
|
rc = ap_msg->rc;
|
if (rc == 0)
|
rc = convert_response_ep11_xcrb(userspace, zq, ap_msg, xcrb);
|
} else
|
/* Signal pending. */
|
ap_cancel_message(zq->queue, ap_msg);
|
out:
|
return rc;
|
}
|
|
unsigned int get_rng_fc(struct ap_message *ap_msg, int *func_code,
|
unsigned int *domain)
|
{
|
struct response_type resp_type = {
|
.type = CEXXC_RESPONSE_TYPE_XCRB,
|
};
|
|
ap_msg->msg = kmalloc(MSGTYPE06_MAX_MSG_SIZE, GFP_KERNEL);
|
if (!ap_msg->msg)
|
return -ENOMEM;
|
ap_msg->receive = zcrypt_msgtype6_receive;
|
ap_msg->psmid = (((unsigned long long) current->pid) << 32) +
|
atomic_inc_return(&zcrypt_step);
|
ap_msg->private = kmemdup(&resp_type, sizeof(resp_type), GFP_KERNEL);
|
if (!ap_msg->private)
|
return -ENOMEM;
|
|
rng_type6CPRB_msgX(ap_msg, ZCRYPT_RNG_BUFFER_SIZE, domain);
|
|
*func_code = HWRNG;
|
return 0;
|
}
|
|
/**
|
* The request distributor calls this function if it picked the CEXxC
|
* device to generate random data.
|
* @zq: pointer to zcrypt_queue structure that identifies the
|
* CEXxC device to the request distributor
|
* @buffer: pointer to a memory page to return random data
|
*/
|
static long zcrypt_msgtype6_rng(struct zcrypt_queue *zq,
|
char *buffer, struct ap_message *ap_msg)
|
{
|
struct {
|
struct type6_hdr hdr;
|
struct CPRBX cprbx;
|
char function_code[2];
|
short int rule_length;
|
char rule[8];
|
short int verb_length;
|
short int key_length;
|
} __packed * msg = ap_msg->msg;
|
struct response_type *rtype = (struct response_type *)(ap_msg->private);
|
int rc;
|
|
msg->cprbx.domain = AP_QID_QUEUE(zq->queue->qid);
|
|
init_completion(&rtype->work);
|
rc = ap_queue_message(zq->queue, ap_msg);
|
if (rc)
|
goto out;
|
rc = wait_for_completion_interruptible(&rtype->work);
|
if (rc == 0) {
|
rc = ap_msg->rc;
|
if (rc == 0)
|
rc = convert_response_rng(zq, ap_msg, buffer);
|
} else
|
/* Signal pending. */
|
ap_cancel_message(zq->queue, ap_msg);
|
out:
|
return rc;
|
}
|
|
/**
|
* The crypto operations for a CEXxC card.
|
*/
|
static struct zcrypt_ops zcrypt_msgtype6_norng_ops = {
|
.owner = THIS_MODULE,
|
.name = MSGTYPE06_NAME,
|
.variant = MSGTYPE06_VARIANT_NORNG,
|
.rsa_modexpo = zcrypt_msgtype6_modexpo,
|
.rsa_modexpo_crt = zcrypt_msgtype6_modexpo_crt,
|
.send_cprb = zcrypt_msgtype6_send_cprb,
|
};
|
|
static struct zcrypt_ops zcrypt_msgtype6_ops = {
|
.owner = THIS_MODULE,
|
.name = MSGTYPE06_NAME,
|
.variant = MSGTYPE06_VARIANT_DEFAULT,
|
.rsa_modexpo = zcrypt_msgtype6_modexpo,
|
.rsa_modexpo_crt = zcrypt_msgtype6_modexpo_crt,
|
.send_cprb = zcrypt_msgtype6_send_cprb,
|
.rng = zcrypt_msgtype6_rng,
|
};
|
|
static struct zcrypt_ops zcrypt_msgtype6_ep11_ops = {
|
.owner = THIS_MODULE,
|
.name = MSGTYPE06_NAME,
|
.variant = MSGTYPE06_VARIANT_EP11,
|
.rsa_modexpo = NULL,
|
.rsa_modexpo_crt = NULL,
|
.send_ep11_cprb = zcrypt_msgtype6_send_ep11_cprb,
|
};
|
|
void __init zcrypt_msgtype6_init(void)
|
{
|
zcrypt_msgtype_register(&zcrypt_msgtype6_norng_ops);
|
zcrypt_msgtype_register(&zcrypt_msgtype6_ops);
|
zcrypt_msgtype_register(&zcrypt_msgtype6_ep11_ops);
|
}
|
|
void __exit zcrypt_msgtype6_exit(void)
|
{
|
zcrypt_msgtype_unregister(&zcrypt_msgtype6_norng_ops);
|
zcrypt_msgtype_unregister(&zcrypt_msgtype6_ops);
|
zcrypt_msgtype_unregister(&zcrypt_msgtype6_ep11_ops);
|
}
|
