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@@ -0,0 +1,856 @@
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+/*
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+ * zcrypt 2.1.0
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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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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2, or (at your option)
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+ * any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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+ */
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+
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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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+
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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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+
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+#define PCIXCC_MIN_MOD_SIZE_OLD 64 /* 512 bits */
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+#define PCIXCC_MAX_ICA_RESPONSE_SIZE 0x77c /* max size type86 v2 reply */
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+
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+#define CEIL4(x) ((((x)+3)/4)*4)
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+
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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 PCIXCC_RESPONSE_TYPE_ICA 0
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+#define PCIXCC_RESPONSE_TYPE_XCRB 1
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+
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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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+static void zcrypt_msgtype6_receive(struct ap_device *, struct ap_message *,
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+ struct ap_message *);
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+
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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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+
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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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+/**
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+ * The following is used to initialize the CPRBX passed to the PCIXCC/CEX2C
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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 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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+
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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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+ * @zdev: 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 -EFAULT.
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+ */
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+static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_device *zdev,
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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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+ static struct function_and_rules_block static_pke_fnr_MCL2 = {
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+ .function_code = {'P', 'K'},
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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->message;
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+ int size;
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+
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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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+
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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, 1);
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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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+
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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 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr);
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+
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+ msg->cprbx = static_cprbx;
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+ msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid);
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+ msg->cprbx.rpl_msgbl = msg->hdr.FromCardLen1;
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+
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+ msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ?
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+ static_pke_fnr_MCL2 : static_pke_fnr;
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+
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+ msg->cprbx.req_parml = size - sizeof(msg->hdr) - sizeof(msg->cprbx);
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+
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+ ap_msg->length = size;
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+ return 0;
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+}
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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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+ * @zdev: 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 -EFAULT.
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+ */
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+static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_device *zdev,
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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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+
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+ static struct function_and_rules_block static_pkd_fnr_MCL2 = {
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+ .function_code = {'P', 'D'},
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+ .ulen = 10,
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+ .only_rule = {'P', 'K', 'C', 'S', '-', '1', '.', '2'}
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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->message;
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+ int size;
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+
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+ /* VUD.ciphertext */
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+ msg->length = crt->inputdatalength + 2;
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+ if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength))
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+ return -EFAULT;
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+
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+ /* Set up key which is located after the variable length text. */
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+ size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength, 1);
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+ if (size < 0)
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+ return size;
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+ size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */
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+
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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 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr);
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+
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+ msg->cprbx = static_cprbx;
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+ msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid);
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+ msg->cprbx.req_parml = msg->cprbx.rpl_msgbl =
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+ size - sizeof(msg->hdr) - sizeof(msg->cprbx);
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+
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+ msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ?
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+ static_pkd_fnr_MCL2 : static_pkd_fnr;
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+
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+ ap_msg->length = size;
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+ return 0;
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+}
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+
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+/**
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+ * Convert a XCRB message to a type6 CPRB message.
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+ *
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+ * @zdev: crypto device pointer
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+ * @ap_msg: pointer to AP message
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+ * @xcRB: pointer to user input data
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+ *
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+ * Returns 0 on success or -EFAULT, -EINVAL.
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+ */
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+struct type86_fmt2_msg {
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+ struct type86_hdr hdr;
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+ struct type86_fmt2_ext fmt2;
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+} __packed;
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+
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+static int XCRB_msg_to_type6CPRB_msgX(struct zcrypt_device *zdev,
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+ struct ap_message *ap_msg,
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+ struct ica_xcRB *xcRB)
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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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+ };
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+ struct {
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+ struct type6_hdr hdr;
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+ struct CPRBX cprbx;
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+ } __packed * msg = ap_msg->message;
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+
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+ int rcblen = CEIL4(xcRB->request_control_blk_length);
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+ int replylen;
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+ char *req_data = ap_msg->message + sizeof(struct type6_hdr) + rcblen;
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+ char *function_code;
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+
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+ /* length checks */
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+ ap_msg->length = sizeof(struct type6_hdr) +
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+ CEIL4(xcRB->request_control_blk_length) +
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+ xcRB->request_data_length;
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+ if (ap_msg->length > MSGTYPE06_MAX_MSG_SIZE)
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+ return -EINVAL;
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+ replylen = sizeof(struct type86_fmt2_msg) +
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+ CEIL4(xcRB->reply_control_blk_length) +
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+ xcRB->reply_data_length;
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+ if (replylen > MSGTYPE06_MAX_MSG_SIZE)
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+ return -EINVAL;
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+
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+ /* prepare type6 header */
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+ msg->hdr = static_type6_hdrX;
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+ memcpy(msg->hdr.agent_id , &(xcRB->agent_ID), sizeof(xcRB->agent_ID));
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+ msg->hdr.ToCardLen1 = xcRB->request_control_blk_length;
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+ if (xcRB->request_data_length) {
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+ msg->hdr.offset2 = msg->hdr.offset1 + rcblen;
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+ msg->hdr.ToCardLen2 = xcRB->request_data_length;
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+ }
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+ msg->hdr.FromCardLen1 = xcRB->reply_control_blk_length;
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+ msg->hdr.FromCardLen2 = xcRB->reply_data_length;
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+
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+ /* prepare CPRB */
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+ if (copy_from_user(&(msg->cprbx), xcRB->request_control_blk_addr,
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+ xcRB->request_control_blk_length))
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+ return -EFAULT;
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+ if (msg->cprbx.cprb_len + sizeof(msg->hdr.function_code) >
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+ xcRB->request_control_blk_length)
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+ return -EINVAL;
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+ function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len;
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+ memcpy(msg->hdr.function_code, function_code,
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+ sizeof(msg->hdr.function_code));
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+
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+ if (memcmp(function_code, "US", 2) == 0)
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+ ap_msg->special = 1;
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+ else
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+ ap_msg->special = 0;
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+
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+ /* copy data block */
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+ if (xcRB->request_data_length &&
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+ copy_from_user(req_data, xcRB->request_data_address,
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+ xcRB->request_data_length))
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+ return -EFAULT;
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+ return 0;
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+}
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+
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+/**
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+ * Copy results from a type 86 ICA reply message back to user space.
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+ *
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+ * @zdev: crypto device pointer
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+ * @reply: reply AP message.
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+ * @data: pointer to user output data
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+ * @length: size of user output data
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+ *
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+ * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error.
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+ */
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+struct type86x_reply {
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|
|
+ 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[0];
|
|
|
+} __packed;
|
|
|
+
|
|
|
+static int convert_type86_ica(struct zcrypt_device *zdev,
|
|
|
+ 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->message;
|
|
|
+ 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)
|
|
|
+ return -EINVAL;
|
|
|
+ if (service_rc == 8 && service_rs == 65)
|
|
|
+ return -EINVAL;
|
|
|
+ if (service_rc == 8 && service_rs == 770)
|
|
|
+ return -EINVAL;
|
|
|
+ if (service_rc == 8 && service_rs == 783) {
|
|
|
+ zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD;
|
|
|
+ return -EAGAIN;
|
|
|
+ }
|
|
|
+ if (service_rc == 12 && service_rs == 769)
|
|
|
+ return -EINVAL;
|
|
|
+ if (service_rc == 8 && service_rs == 72)
|
|
|
+ return -EINVAL;
|
|
|
+ zdev->online = 0;
|
|
|
+ return -EAGAIN; /* repeat the request on a different device. */
|
|
|
+ }
|
|
|
+ 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 PCICC/PCIXCC 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.
|
|
|
+ *
|
|
|
+ * @zdev: 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(struct zcrypt_device *zdev,
|
|
|
+ struct ap_message *reply,
|
|
|
+ struct ica_xcRB *xcRB)
|
|
|
+{
|
|
|
+ struct type86_fmt2_msg *msg = reply->message;
|
|
|
+ char *data = reply->message;
|
|
|
+
|
|
|
+ /* Copy CPRB to user */
|
|
|
+ if (copy_to_user(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 (copy_to_user(xcRB->reply_data_addr,
|
|
|
+ data + msg->fmt2.offset2, msg->fmt2.count2))
|
|
|
+ return -EFAULT;
|
|
|
+ xcRB->reply_data_length = msg->fmt2.count2;
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int convert_type86_rng(struct zcrypt_device *zdev,
|
|
|
+ struct ap_message *reply,
|
|
|
+ char *buffer)
|
|
|
+{
|
|
|
+ struct {
|
|
|
+ struct type86_hdr hdr;
|
|
|
+ struct type86_fmt2_ext fmt2;
|
|
|
+ struct CPRBX cprbx;
|
|
|
+ } __packed * msg = reply->message;
|
|
|
+ char *data = reply->message;
|
|
|
+
|
|
|
+ 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_device *zdev,
|
|
|
+ struct ap_message *reply,
|
|
|
+ char __user *outputdata,
|
|
|
+ unsigned int outputdatalength)
|
|
|
+{
|
|
|
+ struct type86x_reply *msg = reply->message;
|
|
|
+
|
|
|
+ /* Response type byte is the second byte in the response. */
|
|
|
+ switch (((unsigned char *) reply->message)[1]) {
|
|
|
+ case TYPE82_RSP_CODE:
|
|
|
+ case TYPE88_RSP_CODE:
|
|
|
+ return convert_error(zdev, reply);
|
|
|
+ case TYPE86_RSP_CODE:
|
|
|
+ if (msg->cprbx.ccp_rtcode &&
|
|
|
+ (msg->cprbx.ccp_rscode == 0x14f) &&
|
|
|
+ (outputdatalength > 256)) {
|
|
|
+ if (zdev->max_exp_bit_length <= 17) {
|
|
|
+ zdev->max_exp_bit_length = 17;
|
|
|
+ return -EAGAIN;
|
|
|
+ } else
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+ if (msg->hdr.reply_code)
|
|
|
+ return convert_error(zdev, reply);
|
|
|
+ if (msg->cprbx.cprb_ver_id == 0x02)
|
|
|
+ return convert_type86_ica(zdev, reply,
|
|
|
+ outputdata, outputdatalength);
|
|
|
+ /* Fall through, no break, incorrect cprb version is an unknown
|
|
|
+ * response */
|
|
|
+ default: /* Unknown response type, this should NEVER EVER happen */
|
|
|
+ zdev->online = 0;
|
|
|
+ return -EAGAIN; /* repeat the request on a different device. */
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static int convert_response_xcrb(struct zcrypt_device *zdev,
|
|
|
+ struct ap_message *reply,
|
|
|
+ struct ica_xcRB *xcRB)
|
|
|
+{
|
|
|
+ struct type86x_reply *msg = reply->message;
|
|
|
+
|
|
|
+ /* Response type byte is the second byte in the response. */
|
|
|
+ switch (((unsigned char *) reply->message)[1]) {
|
|
|
+ case TYPE82_RSP_CODE:
|
|
|
+ case TYPE88_RSP_CODE:
|
|
|
+ xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
|
|
|
+ return convert_error(zdev, reply);
|
|
|
+ case TYPE86_RSP_CODE:
|
|
|
+ if (msg->hdr.reply_code) {
|
|
|
+ memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32));
|
|
|
+ return convert_error(zdev, reply);
|
|
|
+ }
|
|
|
+ if (msg->cprbx.cprb_ver_id == 0x02)
|
|
|
+ return convert_type86_xcrb(zdev, reply, xcRB);
|
|
|
+ /* Fall through, no break, incorrect cprb version is an unknown
|
|
|
+ * response */
|
|
|
+ default: /* Unknown response type, this should NEVER EVER happen */
|
|
|
+ xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
|
|
|
+ zdev->online = 0;
|
|
|
+ return -EAGAIN; /* repeat the request on a different device. */
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static int convert_response_rng(struct zcrypt_device *zdev,
|
|
|
+ struct ap_message *reply,
|
|
|
+ char *data)
|
|
|
+{
|
|
|
+ struct type86x_reply *msg = reply->message;
|
|
|
+
|
|
|
+ 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(zdev, reply, data);
|
|
|
+ /* Fall through, no break, incorrect cprb version is an unknown
|
|
|
+ * response */
|
|
|
+ default: /* Unknown response type, this should NEVER EVER happen */
|
|
|
+ zdev->online = 0;
|
|
|
+ return -EAGAIN; /* repeat the request on a different device. */
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * 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.
|
|
|
+ * @ap_dev: pointer to the AP device
|
|
|
+ * @msg: pointer to the AP message
|
|
|
+ * @reply: pointer to the AP reply message
|
|
|
+ */
|
|
|
+static void zcrypt_msgtype6_receive(struct ap_device *ap_dev,
|
|
|
+ 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 length;
|
|
|
+
|
|
|
+ /* Copy the reply message to the request message buffer. */
|
|
|
+ if (IS_ERR(reply)) {
|
|
|
+ memcpy(msg->message, &error_reply, sizeof(error_reply));
|
|
|
+ goto out;
|
|
|
+ }
|
|
|
+ t86r = reply->message;
|
|
|
+ if (t86r->hdr.type == TYPE86_RSP_CODE &&
|
|
|
+ t86r->cprbx.cprb_ver_id == 0x02) {
|
|
|
+ switch (resp_type->type) {
|
|
|
+ case PCIXCC_RESPONSE_TYPE_ICA:
|
|
|
+ length = sizeof(struct type86x_reply)
|
|
|
+ + t86r->length - 2;
|
|
|
+ length = min(PCIXCC_MAX_ICA_RESPONSE_SIZE, length);
|
|
|
+ memcpy(msg->message, reply->message, length);
|
|
|
+ break;
|
|
|
+ case PCIXCC_RESPONSE_TYPE_XCRB:
|
|
|
+ length = t86r->fmt2.offset2 + t86r->fmt2.count2;
|
|
|
+ length = min(MSGTYPE06_MAX_MSG_SIZE, length);
|
|
|
+ memcpy(msg->message, reply->message, length);
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ memcpy(msg->message, &error_reply,
|
|
|
+ sizeof(error_reply));
|
|
|
+ }
|
|
|
+ } else
|
|
|
+ memcpy(msg->message, reply->message, 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 PCIXCC/CEX2C
|
|
|
+ * device to handle a modexpo request.
|
|
|
+ * @zdev: pointer to zcrypt_device structure that identifies the
|
|
|
+ * PCIXCC/CEX2C device to the request distributor
|
|
|
+ * @mex: pointer to the modexpo request buffer
|
|
|
+ */
|
|
|
+static long zcrypt_msgtype6_modexpo(struct zcrypt_device *zdev,
|
|
|
+ struct ica_rsa_modexpo *mex)
|
|
|
+{
|
|
|
+ struct ap_message ap_msg;
|
|
|
+ struct response_type resp_type = {
|
|
|
+ .type = PCIXCC_RESPONSE_TYPE_ICA,
|
|
|
+ };
|
|
|
+ int rc;
|
|
|
+
|
|
|
+ ap_init_message(&ap_msg);
|
|
|
+ ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
|
|
|
+ if (!ap_msg.message)
|
|
|
+ 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(zdev, &ap_msg, mex);
|
|
|
+ if (rc)
|
|
|
+ goto out_free;
|
|
|
+ init_completion(&resp_type.work);
|
|
|
+ ap_queue_message(zdev->ap_dev, &ap_msg);
|
|
|
+ rc = wait_for_completion_interruptible(&resp_type.work);
|
|
|
+ if (rc == 0)
|
|
|
+ rc = convert_response_ica(zdev, &ap_msg, mex->outputdata,
|
|
|
+ mex->outputdatalength);
|
|
|
+ else
|
|
|
+ /* Signal pending. */
|
|
|
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
|
|
|
+out_free:
|
|
|
+ free_page((unsigned long) ap_msg.message);
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * The request distributor calls this function if it picked the PCIXCC/CEX2C
|
|
|
+ * device to handle a modexpo_crt request.
|
|
|
+ * @zdev: pointer to zcrypt_device structure that identifies the
|
|
|
+ * PCIXCC/CEX2C device to the request distributor
|
|
|
+ * @crt: pointer to the modexpoc_crt request buffer
|
|
|
+ */
|
|
|
+static long zcrypt_msgtype6_modexpo_crt(struct zcrypt_device *zdev,
|
|
|
+ struct ica_rsa_modexpo_crt *crt)
|
|
|
+{
|
|
|
+ struct ap_message ap_msg;
|
|
|
+ struct response_type resp_type = {
|
|
|
+ .type = PCIXCC_RESPONSE_TYPE_ICA,
|
|
|
+ };
|
|
|
+ int rc;
|
|
|
+
|
|
|
+ ap_init_message(&ap_msg);
|
|
|
+ ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
|
|
|
+ if (!ap_msg.message)
|
|
|
+ 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(zdev, &ap_msg, crt);
|
|
|
+ if (rc)
|
|
|
+ goto out_free;
|
|
|
+ init_completion(&resp_type.work);
|
|
|
+ ap_queue_message(zdev->ap_dev, &ap_msg);
|
|
|
+ rc = wait_for_completion_interruptible(&resp_type.work);
|
|
|
+ if (rc == 0)
|
|
|
+ rc = convert_response_ica(zdev, &ap_msg, crt->outputdata,
|
|
|
+ crt->outputdatalength);
|
|
|
+ else
|
|
|
+ /* Signal pending. */
|
|
|
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
|
|
|
+out_free:
|
|
|
+ free_page((unsigned long) ap_msg.message);
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * The request distributor calls this function if it picked the PCIXCC/CEX2C
|
|
|
+ * device to handle a send_cprb request.
|
|
|
+ * @zdev: pointer to zcrypt_device structure that identifies the
|
|
|
+ * PCIXCC/CEX2C device to the request distributor
|
|
|
+ * @xcRB: pointer to the send_cprb request buffer
|
|
|
+ */
|
|
|
+static long zcrypt_msgtype6_send_cprb(struct zcrypt_device *zdev,
|
|
|
+ struct ica_xcRB *xcRB)
|
|
|
+{
|
|
|
+ struct ap_message ap_msg;
|
|
|
+ struct response_type resp_type = {
|
|
|
+ .type = PCIXCC_RESPONSE_TYPE_XCRB,
|
|
|
+ };
|
|
|
+ int rc;
|
|
|
+
|
|
|
+ ap_init_message(&ap_msg);
|
|
|
+ ap_msg.message = kmalloc(MSGTYPE06_MAX_MSG_SIZE, GFP_KERNEL);
|
|
|
+ if (!ap_msg.message)
|
|
|
+ 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 = XCRB_msg_to_type6CPRB_msgX(zdev, &ap_msg, xcRB);
|
|
|
+ if (rc)
|
|
|
+ goto out_free;
|
|
|
+ init_completion(&resp_type.work);
|
|
|
+ ap_queue_message(zdev->ap_dev, &ap_msg);
|
|
|
+ rc = wait_for_completion_interruptible(&resp_type.work);
|
|
|
+ if (rc == 0)
|
|
|
+ rc = convert_response_xcrb(zdev, &ap_msg, xcRB);
|
|
|
+ else
|
|
|
+ /* Signal pending. */
|
|
|
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
|
|
|
+out_free:
|
|
|
+ kzfree(ap_msg.message);
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * The request distributor calls this function if it picked the PCIXCC/CEX2C
|
|
|
+ * device to generate random data.
|
|
|
+ * @zdev: pointer to zcrypt_device structure that identifies the
|
|
|
+ * PCIXCC/CEX2C device to the request distributor
|
|
|
+ * @buffer: pointer to a memory page to return random data
|
|
|
+ */
|
|
|
+
|
|
|
+static long zcrypt_msgtype6_rng(struct zcrypt_device *zdev,
|
|
|
+ char *buffer)
|
|
|
+{
|
|
|
+ struct ap_message ap_msg;
|
|
|
+ struct response_type resp_type = {
|
|
|
+ .type = PCIXCC_RESPONSE_TYPE_XCRB,
|
|
|
+ };
|
|
|
+ int rc;
|
|
|
+
|
|
|
+ ap_init_message(&ap_msg);
|
|
|
+ ap_msg.message = kmalloc(MSGTYPE06_MAX_MSG_SIZE, GFP_KERNEL);
|
|
|
+ if (!ap_msg.message)
|
|
|
+ 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;
|
|
|
+ rng_type6CPRB_msgX(zdev->ap_dev, &ap_msg, ZCRYPT_RNG_BUFFER_SIZE);
|
|
|
+ init_completion(&resp_type.work);
|
|
|
+ ap_queue_message(zdev->ap_dev, &ap_msg);
|
|
|
+ rc = wait_for_completion_interruptible(&resp_type.work);
|
|
|
+ if (rc == 0)
|
|
|
+ rc = convert_response_rng(zdev, &ap_msg, buffer);
|
|
|
+ else
|
|
|
+ /* Signal pending. */
|
|
|
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
|
|
|
+ kfree(ap_msg.message);
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * The crypto operations for a PCIXCC/CEX2C card.
|
|
|
+ */
|
|
|
+static struct zcrypt_ops zcrypt_msgtype6_norng_ops = {
|
|
|
+ .owner = THIS_MODULE,
|
|
|
+ .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,
|
|
|
+ .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,
|
|
|
+};
|
|
|
+
|
|
|
+int __init zcrypt_msgtype6_init(void)
|
|
|
+{
|
|
|
+ zcrypt_msgtype_register(&zcrypt_msgtype6_norng_ops);
|
|
|
+ zcrypt_msgtype_register(&zcrypt_msgtype6_ops);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+void __exit zcrypt_msgtype6_exit(void)
|
|
|
+{
|
|
|
+ zcrypt_msgtype_unregister(&zcrypt_msgtype6_norng_ops);
|
|
|
+ zcrypt_msgtype_unregister(&zcrypt_msgtype6_ops);
|
|
|
+}
|
|
|
+
|
|
|
+module_init(zcrypt_msgtype6_init);
|
|
|
+module_exit(zcrypt_msgtype6_exit);
|
Holger Dengler