547 lines
16 KiB
C
547 lines
16 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* CP Assist for Cryptographic Functions (CPACF)
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*
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* Copyright IBM Corp. 2003, 2017
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* Author(s): Thomas Spatzier
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* Jan Glauber
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* Harald Freudenberger (freude@de.ibm.com)
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* Martin Schwidefsky <schwidefsky@de.ibm.com>
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*/
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#ifndef _ASM_S390_CPACF_H
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#define _ASM_S390_CPACF_H
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#include <asm/facility.h>
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/*
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* Instruction opcodes for the CPACF instructions
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*/
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#define CPACF_KMAC 0xb91e /* MSA */
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#define CPACF_KM 0xb92e /* MSA */
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#define CPACF_KMC 0xb92f /* MSA */
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#define CPACF_KIMD 0xb93e /* MSA */
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#define CPACF_KLMD 0xb93f /* MSA */
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#define CPACF_PCKMO 0xb928 /* MSA3 */
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#define CPACF_KMF 0xb92a /* MSA4 */
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#define CPACF_KMO 0xb92b /* MSA4 */
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#define CPACF_PCC 0xb92c /* MSA4 */
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#define CPACF_KMCTR 0xb92d /* MSA4 */
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#define CPACF_PRNO 0xb93c /* MSA5 */
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#define CPACF_KMA 0xb929 /* MSA8 */
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#define CPACF_KDSA 0xb93a /* MSA9 */
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/*
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* En/decryption modifier bits
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*/
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#define CPACF_ENCRYPT 0x00
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#define CPACF_DECRYPT 0x80
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/*
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* Function codes for the KM (CIPHER MESSAGE) instruction
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*/
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#define CPACF_KM_QUERY 0x00
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#define CPACF_KM_DEA 0x01
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#define CPACF_KM_TDEA_128 0x02
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#define CPACF_KM_TDEA_192 0x03
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#define CPACF_KM_AES_128 0x12
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#define CPACF_KM_AES_192 0x13
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#define CPACF_KM_AES_256 0x14
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#define CPACF_KM_PAES_128 0x1a
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#define CPACF_KM_PAES_192 0x1b
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#define CPACF_KM_PAES_256 0x1c
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#define CPACF_KM_XTS_128 0x32
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#define CPACF_KM_XTS_256 0x34
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#define CPACF_KM_PXTS_128 0x3a
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#define CPACF_KM_PXTS_256 0x3c
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/*
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* Function codes for the KMC (CIPHER MESSAGE WITH CHAINING)
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* instruction
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*/
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#define CPACF_KMC_QUERY 0x00
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#define CPACF_KMC_DEA 0x01
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#define CPACF_KMC_TDEA_128 0x02
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#define CPACF_KMC_TDEA_192 0x03
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#define CPACF_KMC_AES_128 0x12
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#define CPACF_KMC_AES_192 0x13
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#define CPACF_KMC_AES_256 0x14
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#define CPACF_KMC_PAES_128 0x1a
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#define CPACF_KMC_PAES_192 0x1b
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#define CPACF_KMC_PAES_256 0x1c
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#define CPACF_KMC_PRNG 0x43
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/*
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* Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER)
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* instruction
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*/
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#define CPACF_KMCTR_QUERY 0x00
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#define CPACF_KMCTR_DEA 0x01
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#define CPACF_KMCTR_TDEA_128 0x02
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#define CPACF_KMCTR_TDEA_192 0x03
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#define CPACF_KMCTR_AES_128 0x12
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#define CPACF_KMCTR_AES_192 0x13
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#define CPACF_KMCTR_AES_256 0x14
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#define CPACF_KMCTR_PAES_128 0x1a
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#define CPACF_KMCTR_PAES_192 0x1b
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#define CPACF_KMCTR_PAES_256 0x1c
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/*
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* Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
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* instruction
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*/
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#define CPACF_KIMD_QUERY 0x00
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#define CPACF_KIMD_SHA_1 0x01
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#define CPACF_KIMD_SHA_256 0x02
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#define CPACF_KIMD_SHA_512 0x03
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#define CPACF_KIMD_SHA3_224 0x20
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#define CPACF_KIMD_SHA3_256 0x21
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#define CPACF_KIMD_SHA3_384 0x22
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#define CPACF_KIMD_SHA3_512 0x23
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#define CPACF_KIMD_GHASH 0x41
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/*
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* Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST)
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* instruction
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*/
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#define CPACF_KLMD_QUERY 0x00
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#define CPACF_KLMD_SHA_1 0x01
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#define CPACF_KLMD_SHA_256 0x02
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#define CPACF_KLMD_SHA_512 0x03
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#define CPACF_KLMD_SHA3_224 0x20
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#define CPACF_KLMD_SHA3_256 0x21
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#define CPACF_KLMD_SHA3_384 0x22
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#define CPACF_KLMD_SHA3_512 0x23
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/*
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* function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
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* instruction
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*/
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#define CPACF_KMAC_QUERY 0x00
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#define CPACF_KMAC_DEA 0x01
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#define CPACF_KMAC_TDEA_128 0x02
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#define CPACF_KMAC_TDEA_192 0x03
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/*
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* Function codes for the PCKMO (PERFORM CRYPTOGRAPHIC KEY MANAGEMENT)
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* instruction
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*/
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#define CPACF_PCKMO_QUERY 0x00
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#define CPACF_PCKMO_ENC_DES_KEY 0x01
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#define CPACF_PCKMO_ENC_TDES_128_KEY 0x02
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#define CPACF_PCKMO_ENC_TDES_192_KEY 0x03
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#define CPACF_PCKMO_ENC_AES_128_KEY 0x12
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#define CPACF_PCKMO_ENC_AES_192_KEY 0x13
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#define CPACF_PCKMO_ENC_AES_256_KEY 0x14
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/*
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* Function codes for the PRNO (PERFORM RANDOM NUMBER OPERATION)
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* instruction
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*/
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#define CPACF_PRNO_QUERY 0x00
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#define CPACF_PRNO_SHA512_DRNG_GEN 0x03
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#define CPACF_PRNO_SHA512_DRNG_SEED 0x83
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#define CPACF_PRNO_TRNG_Q_R2C_RATIO 0x70
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#define CPACF_PRNO_TRNG 0x72
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/*
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* Function codes for the KMA (CIPHER MESSAGE WITH AUTHENTICATION)
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* instruction
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*/
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#define CPACF_KMA_QUERY 0x00
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#define CPACF_KMA_GCM_AES_128 0x12
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#define CPACF_KMA_GCM_AES_192 0x13
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#define CPACF_KMA_GCM_AES_256 0x14
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/*
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* Flags for the KMA (CIPHER MESSAGE WITH AUTHENTICATION) instruction
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*/
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#define CPACF_KMA_LPC 0x100 /* Last-Plaintext/Ciphertext */
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#define CPACF_KMA_LAAD 0x200 /* Last-AAD */
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#define CPACF_KMA_HS 0x400 /* Hash-subkey Supplied */
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typedef struct { unsigned char bytes[16]; } cpacf_mask_t;
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/**
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* cpacf_query() - check if a specific CPACF function is available
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* @opcode: the opcode of the crypto instruction
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* @func: the function code to test for
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*
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* Executes the query function for the given crypto instruction @opcode
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* and checks if @func is available
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*
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* Returns 1 if @func is available for @opcode, 0 otherwise
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*/
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static __always_inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
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{
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asm volatile(
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" lghi 0,0\n" /* query function */
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" lgr 1,%[mask]\n"
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" spm 0\n" /* pckmo doesn't change the cc */
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/* Parameter regs are ignored, but must be nonzero and unique */
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"0: .insn rrf,%[opc] << 16,2,4,6,0\n"
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" brc 1,0b\n" /* handle partial completion */
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: "=m" (*mask)
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: [mask] "d" ((unsigned long)mask), [opc] "i" (opcode)
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: "cc", "0", "1");
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}
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static __always_inline int __cpacf_check_opcode(unsigned int opcode)
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{
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switch (opcode) {
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case CPACF_KMAC:
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case CPACF_KM:
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case CPACF_KMC:
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case CPACF_KIMD:
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case CPACF_KLMD:
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return test_facility(17); /* check for MSA */
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case CPACF_PCKMO:
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return test_facility(76); /* check for MSA3 */
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case CPACF_KMF:
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case CPACF_KMO:
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case CPACF_PCC:
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case CPACF_KMCTR:
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return test_facility(77); /* check for MSA4 */
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case CPACF_PRNO:
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return test_facility(57); /* check for MSA5 */
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case CPACF_KMA:
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return test_facility(146); /* check for MSA8 */
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default:
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BUG();
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}
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}
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static __always_inline int cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
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{
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if (__cpacf_check_opcode(opcode)) {
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__cpacf_query(opcode, mask);
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return 1;
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}
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memset(mask, 0, sizeof(*mask));
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return 0;
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}
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static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func)
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{
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return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0;
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}
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static __always_inline int cpacf_query_func(unsigned int opcode, unsigned int func)
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{
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cpacf_mask_t mask;
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if (cpacf_query(opcode, &mask))
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return cpacf_test_func(&mask, func);
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return 0;
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}
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/**
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* cpacf_km() - executes the KM (CIPHER MESSAGE) instruction
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* @func: the function code passed to KM; see CPACF_KM_xxx defines
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* @param: address of parameter block; see POP for details on each func
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* @dest: address of destination memory area
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* @src: address of source memory area
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* @src_len: length of src operand in bytes
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*
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* Returns 0 for the query func, number of processed bytes for
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* encryption/decryption funcs
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*/
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static inline int cpacf_km(unsigned long func, void *param,
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u8 *dest, const u8 *src, long src_len)
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{
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union register_pair d, s;
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d.even = (unsigned long)dest;
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s.even = (unsigned long)src;
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s.odd = (unsigned long)src_len;
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asm volatile(
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" lgr 0,%[fc]\n"
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" lgr 1,%[pba]\n"
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"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
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" brc 1,0b\n" /* handle partial completion */
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: [src] "+&d" (s.pair), [dst] "+&d" (d.pair)
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: [fc] "d" (func), [pba] "d" ((unsigned long)param),
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[opc] "i" (CPACF_KM)
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: "cc", "memory", "0", "1");
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return src_len - s.odd;
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}
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/**
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* cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction
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* @func: the function code passed to KM; see CPACF_KMC_xxx defines
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* @param: address of parameter block; see POP for details on each func
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* @dest: address of destination memory area
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* @src: address of source memory area
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* @src_len: length of src operand in bytes
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*
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* Returns 0 for the query func, number of processed bytes for
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* encryption/decryption funcs
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*/
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static inline int cpacf_kmc(unsigned long func, void *param,
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u8 *dest, const u8 *src, long src_len)
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{
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union register_pair d, s;
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d.even = (unsigned long)dest;
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s.even = (unsigned long)src;
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s.odd = (unsigned long)src_len;
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asm volatile(
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" lgr 0,%[fc]\n"
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" lgr 1,%[pba]\n"
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"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
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" brc 1,0b\n" /* handle partial completion */
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: [src] "+&d" (s.pair), [dst] "+&d" (d.pair)
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: [fc] "d" (func), [pba] "d" ((unsigned long)param),
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[opc] "i" (CPACF_KMC)
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: "cc", "memory", "0", "1");
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return src_len - s.odd;
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}
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/**
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* cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
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* instruction
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* @func: the function code passed to KM; see CPACF_KIMD_xxx defines
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* @param: address of parameter block; see POP for details on each func
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* @src: address of source memory area
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* @src_len: length of src operand in bytes
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*/
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static inline void cpacf_kimd(unsigned long func, void *param,
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const u8 *src, long src_len)
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{
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union register_pair s;
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s.even = (unsigned long)src;
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s.odd = (unsigned long)src_len;
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asm volatile(
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" lgr 0,%[fc]\n"
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" lgr 1,%[pba]\n"
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"0: .insn rre,%[opc] << 16,0,%[src]\n"
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" brc 1,0b\n" /* handle partial completion */
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: [src] "+&d" (s.pair)
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: [fc] "d" (func), [pba] "d" ((unsigned long)(param)),
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[opc] "i" (CPACF_KIMD)
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: "cc", "memory", "0", "1");
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}
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/**
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* cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction
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* @func: the function code passed to KM; see CPACF_KLMD_xxx defines
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* @param: address of parameter block; see POP for details on each func
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* @src: address of source memory area
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* @src_len: length of src operand in bytes
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*/
|
||
|
|
static inline void cpacf_klmd(unsigned long func, void *param,
|
||
|
|
const u8 *src, long src_len)
|
||
|
|
{
|
||
|
|
union register_pair s;
|
||
|
|
|
||
|
|
s.even = (unsigned long)src;
|
||
|
|
s.odd = (unsigned long)src_len;
|
||
|
|
asm volatile(
|
||
|
|
" lgr 0,%[fc]\n"
|
||
|
|
" lgr 1,%[pba]\n"
|
||
|
|
"0: .insn rre,%[opc] << 16,0,%[src]\n"
|
||
|
|
" brc 1,0b\n" /* handle partial completion */
|
||
|
|
: [src] "+&d" (s.pair)
|
||
|
|
: [fc] "d" (func), [pba] "d" ((unsigned long)param),
|
||
|
|
[opc] "i" (CPACF_KLMD)
|
||
|
|
: "cc", "memory", "0", "1");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
|
||
|
|
* instruction
|
||
|
|
* @func: the function code passed to KM; see CPACF_KMAC_xxx defines
|
||
|
|
* @param: address of parameter block; see POP for details on each func
|
||
|
|
* @src: address of source memory area
|
||
|
|
* @src_len: length of src operand in bytes
|
||
|
|
*
|
||
|
|
* Returns 0 for the query func, number of processed bytes for digest funcs
|
||
|
|
*/
|
||
|
|
static inline int cpacf_kmac(unsigned long func, void *param,
|
||
|
|
const u8 *src, long src_len)
|
||
|
|
{
|
||
|
|
union register_pair s;
|
||
|
|
|
||
|
|
s.even = (unsigned long)src;
|
||
|
|
s.odd = (unsigned long)src_len;
|
||
|
|
asm volatile(
|
||
|
|
" lgr 0,%[fc]\n"
|
||
|
|
" lgr 1,%[pba]\n"
|
||
|
|
"0: .insn rre,%[opc] << 16,0,%[src]\n"
|
||
|
|
" brc 1,0b\n" /* handle partial completion */
|
||
|
|
: [src] "+&d" (s.pair)
|
||
|
|
: [fc] "d" (func), [pba] "d" ((unsigned long)param),
|
||
|
|
[opc] "i" (CPACF_KMAC)
|
||
|
|
: "cc", "memory", "0", "1");
|
||
|
|
|
||
|
|
return src_len - s.odd;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* cpacf_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction
|
||
|
|
* @func: the function code passed to KMCTR; see CPACF_KMCTR_xxx defines
|
||
|
|
* @param: address of parameter block; see POP for details on each func
|
||
|
|
* @dest: address of destination memory area
|
||
|
|
* @src: address of source memory area
|
||
|
|
* @src_len: length of src operand in bytes
|
||
|
|
* @counter: address of counter value
|
||
|
|
*
|
||
|
|
* Returns 0 for the query func, number of processed bytes for
|
||
|
|
* encryption/decryption funcs
|
||
|
|
*/
|
||
|
|
static inline int cpacf_kmctr(unsigned long func, void *param, u8 *dest,
|
||
|
|
const u8 *src, long src_len, u8 *counter)
|
||
|
|
{
|
||
|
|
union register_pair d, s, c;
|
||
|
|
|
||
|
|
d.even = (unsigned long)dest;
|
||
|
|
s.even = (unsigned long)src;
|
||
|
|
s.odd = (unsigned long)src_len;
|
||
|
|
c.even = (unsigned long)counter;
|
||
|
|
asm volatile(
|
||
|
|
" lgr 0,%[fc]\n"
|
||
|
|
" lgr 1,%[pba]\n"
|
||
|
|
"0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n"
|
||
|
|
" brc 1,0b\n" /* handle partial completion */
|
||
|
|
: [src] "+&d" (s.pair), [dst] "+&d" (d.pair),
|
||
|
|
[ctr] "+&d" (c.pair)
|
||
|
|
: [fc] "d" (func), [pba] "d" ((unsigned long)param),
|
||
|
|
[opc] "i" (CPACF_KMCTR)
|
||
|
|
: "cc", "memory", "0", "1");
|
||
|
|
|
||
|
|
return src_len - s.odd;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* cpacf_prno() - executes the PRNO (PERFORM RANDOM NUMBER OPERATION)
|
||
|
|
* instruction
|
||
|
|
* @func: the function code passed to PRNO; see CPACF_PRNO_xxx defines
|
||
|
|
* @param: address of parameter block; see POP for details on each func
|
||
|
|
* @dest: address of destination memory area
|
||
|
|
* @dest_len: size of destination memory area in bytes
|
||
|
|
* @seed: address of seed data
|
||
|
|
* @seed_len: size of seed data in bytes
|
||
|
|
*/
|
||
|
|
static inline void cpacf_prno(unsigned long func, void *param,
|
||
|
|
u8 *dest, unsigned long dest_len,
|
||
|
|
const u8 *seed, unsigned long seed_len)
|
||
|
|
{
|
||
|
|
union register_pair d, s;
|
||
|
|
|
||
|
|
d.even = (unsigned long)dest;
|
||
|
|
d.odd = (unsigned long)dest_len;
|
||
|
|
s.even = (unsigned long)seed;
|
||
|
|
s.odd = (unsigned long)seed_len;
|
||
|
|
asm volatile (
|
||
|
|
" lgr 0,%[fc]\n"
|
||
|
|
" lgr 1,%[pba]\n"
|
||
|
|
"0: .insn rre,%[opc] << 16,%[dst],%[seed]\n"
|
||
|
|
" brc 1,0b\n" /* handle partial completion */
|
||
|
|
: [dst] "+&d" (d.pair)
|
||
|
|
: [fc] "d" (func), [pba] "d" ((unsigned long)param),
|
||
|
|
[seed] "d" (s.pair), [opc] "i" (CPACF_PRNO)
|
||
|
|
: "cc", "memory", "0", "1");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* cpacf_trng() - executes the TRNG subfunction of the PRNO instruction
|
||
|
|
* @ucbuf: buffer for unconditioned data
|
||
|
|
* @ucbuf_len: amount of unconditioned data to fetch in bytes
|
||
|
|
* @cbuf: buffer for conditioned data
|
||
|
|
* @cbuf_len: amount of conditioned data to fetch in bytes
|
||
|
|
*/
|
||
|
|
static inline void cpacf_trng(u8 *ucbuf, unsigned long ucbuf_len,
|
||
|
|
u8 *cbuf, unsigned long cbuf_len)
|
||
|
|
{
|
||
|
|
union register_pair u, c;
|
||
|
|
|
||
|
|
u.even = (unsigned long)ucbuf;
|
||
|
|
u.odd = (unsigned long)ucbuf_len;
|
||
|
|
c.even = (unsigned long)cbuf;
|
||
|
|
c.odd = (unsigned long)cbuf_len;
|
||
|
|
asm volatile (
|
||
|
|
" lghi 0,%[fc]\n"
|
||
|
|
"0: .insn rre,%[opc] << 16,%[ucbuf],%[cbuf]\n"
|
||
|
|
" brc 1,0b\n" /* handle partial completion */
|
||
|
|
: [ucbuf] "+&d" (u.pair), [cbuf] "+&d" (c.pair)
|
||
|
|
: [fc] "K" (CPACF_PRNO_TRNG), [opc] "i" (CPACF_PRNO)
|
||
|
|
: "cc", "memory", "0");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION)
|
||
|
|
* instruction
|
||
|
|
* @func: the function code passed to PCC; see CPACF_KM_xxx defines
|
||
|
|
* @param: address of parameter block; see POP for details on each func
|
||
|
|
*/
|
||
|
|
static inline void cpacf_pcc(unsigned long func, void *param)
|
||
|
|
{
|
||
|
|
asm volatile(
|
||
|
|
" lgr 0,%[fc]\n"
|
||
|
|
" lgr 1,%[pba]\n"
|
||
|
|
"0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */
|
||
|
|
" brc 1,0b\n" /* handle partial completion */
|
||
|
|
:
|
||
|
|
: [fc] "d" (func), [pba] "d" ((unsigned long)param),
|
||
|
|
[opc] "i" (CPACF_PCC)
|
||
|
|
: "cc", "memory", "0", "1");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* cpacf_pckmo() - executes the PCKMO (PERFORM CRYPTOGRAPHIC KEY
|
||
|
|
* MANAGEMENT) instruction
|
||
|
|
* @func: the function code passed to PCKMO; see CPACF_PCKMO_xxx defines
|
||
|
|
* @param: address of parameter block; see POP for details on each func
|
||
|
|
*
|
||
|
|
* Returns 0.
|
||
|
|
*/
|
||
|
|
static inline void cpacf_pckmo(long func, void *param)
|
||
|
|
{
|
||
|
|
asm volatile(
|
||
|
|
" lgr 0,%[fc]\n"
|
||
|
|
" lgr 1,%[pba]\n"
|
||
|
|
" .insn rre,%[opc] << 16,0,0\n" /* PCKMO opcode */
|
||
|
|
:
|
||
|
|
: [fc] "d" (func), [pba] "d" ((unsigned long)param),
|
||
|
|
[opc] "i" (CPACF_PCKMO)
|
||
|
|
: "cc", "memory", "0", "1");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* cpacf_kma() - executes the KMA (CIPHER MESSAGE WITH AUTHENTICATION)
|
||
|
|
* instruction
|
||
|
|
* @func: the function code passed to KMA; see CPACF_KMA_xxx defines
|
||
|
|
* @param: address of parameter block; see POP for details on each func
|
||
|
|
* @dest: address of destination memory area
|
||
|
|
* @src: address of source memory area
|
||
|
|
* @src_len: length of src operand in bytes
|
||
|
|
* @aad: address of additional authenticated data memory area
|
||
|
|
* @aad_len: length of aad operand in bytes
|
||
|
|
*/
|
||
|
|
static inline void cpacf_kma(unsigned long func, void *param, u8 *dest,
|
||
|
|
const u8 *src, unsigned long src_len,
|
||
|
|
const u8 *aad, unsigned long aad_len)
|
||
|
|
{
|
||
|
|
union register_pair d, s, a;
|
||
|
|
|
||
|
|
d.even = (unsigned long)dest;
|
||
|
|
s.even = (unsigned long)src;
|
||
|
|
s.odd = (unsigned long)src_len;
|
||
|
|
a.even = (unsigned long)aad;
|
||
|
|
a.odd = (unsigned long)aad_len;
|
||
|
|
asm volatile(
|
||
|
|
" lgr 0,%[fc]\n"
|
||
|
|
" lgr 1,%[pba]\n"
|
||
|
|
"0: .insn rrf,%[opc] << 16,%[dst],%[src],%[aad],0\n"
|
||
|
|
" brc 1,0b\n" /* handle partial completion */
|
||
|
|
: [dst] "+&d" (d.pair), [src] "+&d" (s.pair),
|
||
|
|
[aad] "+&d" (a.pair)
|
||
|
|
: [fc] "d" (func), [pba] "d" ((unsigned long)param),
|
||
|
|
[opc] "i" (CPACF_KMA)
|
||
|
|
: "cc", "memory", "0", "1");
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* _ASM_S390_CPACF_H */
|