/* 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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* MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com>
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*/
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#ifndef _ZCRYPT_MSGTYPE6_H_
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#define _ZCRYPT_MSGTYPE6_H_
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#include <asm/zcrypt.h>
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#define MSGTYPE06_NAME "zcrypt_msgtype6"
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#define MSGTYPE06_VARIANT_DEFAULT 0
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#define MSGTYPE06_VARIANT_NORNG 1
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#define MSGTYPE06_VARIANT_EP11 2
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#define MSGTYPE06_MAX_MSG_SIZE (12*1024)
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/**
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* The type 6 message family is associated with CEXxC/CEXxP cards.
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*
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* It contains a message header followed by a CPRB, both of which
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* are described below.
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*
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* Note that all reserved fields must be zeroes.
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*/
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struct type6_hdr {
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unsigned char reserved1; /* 0x00 */
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unsigned char type; /* 0x06 */
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unsigned char reserved2[2]; /* 0x0000 */
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unsigned char right[4]; /* 0x00000000 */
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unsigned char reserved3[2]; /* 0x0000 */
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unsigned char reserved4[2]; /* 0x0000 */
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unsigned char apfs[4]; /* 0x00000000 */
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unsigned int offset1; /* 0x00000058 (offset to CPRB) */
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unsigned int offset2; /* 0x00000000 */
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unsigned int offset3; /* 0x00000000 */
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unsigned int offset4; /* 0x00000000 */
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unsigned char agent_id[16]; /* 0x4341000000000000 */
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/* 0x0000000000000000 */
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unsigned char rqid[2]; /* rqid. internal to 603 */
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unsigned char reserved5[2]; /* 0x0000 */
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unsigned char function_code[2]; /* for PKD, 0x5044 (ascii 'PD') */
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unsigned char reserved6[2]; /* 0x0000 */
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unsigned int ToCardLen1; /* (request CPRB len + 3) & -4 */
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unsigned int ToCardLen2; /* db len 0x00000000 for PKD */
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unsigned int ToCardLen3; /* 0x00000000 */
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unsigned int ToCardLen4; /* 0x00000000 */
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unsigned int FromCardLen1; /* response buffer length */
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unsigned int FromCardLen2; /* db len 0x00000000 for PKD */
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unsigned int FromCardLen3; /* 0x00000000 */
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unsigned int FromCardLen4; /* 0x00000000 */
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} __packed;
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/**
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* The type 86 message family is associated with CEXxC/CEXxP cards.
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*
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* It contains a message header followed by a CPRB. The CPRB is
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* the same as the request CPRB, which is described above.
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*
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* If format is 1, an error condition exists and no data beyond
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* the 8-byte message header is of interest.
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*
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* The non-error message is shown below.
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*
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* Note that all reserved fields must be zeroes.
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*/
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struct type86_hdr {
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unsigned char reserved1; /* 0x00 */
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unsigned char type; /* 0x86 */
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unsigned char format; /* 0x01 (error) or 0x02 (ok) */
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unsigned char reserved2; /* 0x00 */
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unsigned char reply_code; /* reply code (see above) */
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unsigned char reserved3[3]; /* 0x000000 */
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} __packed;
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#define TYPE86_RSP_CODE 0x86
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#define TYPE87_RSP_CODE 0x87
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#define TYPE86_FMT2 0x02
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struct type86_fmt2_ext {
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unsigned char reserved[4]; /* 0x00000000 */
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unsigned char apfs[4]; /* final status */
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unsigned int count1; /* length of CPRB + parameters */
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unsigned int offset1; /* offset to CPRB */
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unsigned int count2; /* 0x00000000 */
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unsigned int offset2; /* db offset 0x00000000 for PKD */
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unsigned int count3; /* 0x00000000 */
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unsigned int offset3; /* 0x00000000 */
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unsigned int count4; /* 0x00000000 */
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unsigned int offset4; /* 0x00000000 */
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} __packed;
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unsigned int get_cprb_fc(bool userspace, struct ica_xcRB *, struct ap_message *,
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unsigned int *, unsigned short **);
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unsigned int get_ep11cprb_fc(bool userspace, struct ep11_urb *, struct ap_message *,
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unsigned int *);
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unsigned int get_rng_fc(struct ap_message *, int *, unsigned int *);
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#define LOW 10
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#define MEDIUM 100
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#define HIGH 500
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int speed_idx_cca(int);
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int speed_idx_ep11(int);
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/**
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* Prepare a type6 CPRB message for random number generation
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*
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* @ap_dev: AP device pointer
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* @ap_msg: pointer to AP message
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*/
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static inline void rng_type6CPRB_msgX(struct ap_message *ap_msg,
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unsigned int random_number_length,
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unsigned int *domain)
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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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char function_code[2];
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short int rule_length;
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char rule[8];
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short int verb_length;
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short int key_length;
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} __packed * msg = ap_msg->msg;
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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 = {'R', 'L'},
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.ToCardLen1 = sizeof(*msg) - sizeof(msg->hdr),
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.FromCardLen1 = sizeof(*msg) - sizeof(msg->hdr),
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};
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static struct CPRBX local_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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.req_parml = sizeof(*msg) - sizeof(msg->hdr) -
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sizeof(msg->cprbx),
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.rpl_msgbl = sizeof(*msg) - sizeof(msg->hdr),
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};
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msg->hdr = static_type6_hdrX;
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msg->hdr.FromCardLen2 = random_number_length,
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msg->cprbx = local_cprbx;
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msg->cprbx.rpl_datal = random_number_length,
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memcpy(msg->function_code, msg->hdr.function_code, 0x02);
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msg->rule_length = 0x0a;
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memcpy(msg->rule, "RANDOM ", 8);
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msg->verb_length = 0x02;
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msg->key_length = 0x02;
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ap_msg->len = sizeof(*msg);
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*domain = (unsigned short)msg->cprbx.domain;
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}
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void zcrypt_msgtype6_init(void);
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void zcrypt_msgtype6_exit(void);
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#endif /* _ZCRYPT_MSGTYPE6_H_ */
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