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546 lines
16 KiB
546 lines
16 KiB
/* 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 ([email protected]) |
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* Martin Schwidefsky <[email protected]> |
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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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/* |
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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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/* |
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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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/* |
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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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*/ |
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static inline void cpacf_klmd(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_KLMD) |
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: "cc", "memory", "0", "1"); |
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} |
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/** |
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* cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) |
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* instruction |
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* @func: the function code passed to KM; see CPACF_KMAC_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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* Returns 0 for the query func, number of processed bytes for digest funcs |
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*/ |
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static inline int cpacf_kmac(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_KMAC) |
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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_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction |
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* @func: the function code passed to KMCTR; see CPACF_KMCTR_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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* @counter: address of counter value |
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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_kmctr(unsigned long func, void *param, u8 *dest, |
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const u8 *src, long src_len, u8 *counter) |
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{ |
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union register_pair d, s, c; |
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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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c.even = (unsigned long)counter; |
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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 rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\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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[ctr] "+&d" (c.pair) |
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: [fc] "d" (func), [pba] "d" ((unsigned long)param), |
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[opc] "i" (CPACF_KMCTR) |
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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_prno() - executes the PRNO (PERFORM RANDOM NUMBER OPERATION) |
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* instruction |
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* @func: the function code passed to PRNO; see CPACF_PRNO_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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* @dest_len: size of destination memory area in bytes |
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* @seed: address of seed data |
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* @seed_len: size of seed data in bytes |
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*/ |
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static inline void cpacf_prno(unsigned long func, void *param, |
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u8 *dest, unsigned long dest_len, |
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const u8 *seed, unsigned long seed_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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d.odd = (unsigned long)dest_len; |
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s.even = (unsigned long)seed; |
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s.odd = (unsigned long)seed_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],%[seed]\n" |
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" brc 1,0b\n" /* handle partial completion */ |
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: [dst] "+&d" (d.pair) |
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: [fc] "d" (func), [pba] "d" ((unsigned long)param), |
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[seed] "d" (s.pair), [opc] "i" (CPACF_PRNO) |
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: "cc", "memory", "0", "1"); |
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} |
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/** |
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* cpacf_trng() - executes the TRNG subfunction of the PRNO instruction |
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* @ucbuf: buffer for unconditioned data |
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* @ucbuf_len: amount of unconditioned data to fetch in bytes |
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* @cbuf: buffer for conditioned data |
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* @cbuf_len: amount of conditioned data to fetch in bytes |
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*/ |
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static inline void cpacf_trng(u8 *ucbuf, unsigned long ucbuf_len, |
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u8 *cbuf, unsigned long cbuf_len) |
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{ |
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union register_pair u, c; |
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u.even = (unsigned long)ucbuf; |
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u.odd = (unsigned long)ucbuf_len; |
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c.even = (unsigned long)cbuf; |
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c.odd = (unsigned long)cbuf_len; |
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asm volatile ( |
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" lghi 0,%[fc]\n" |
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"0: .insn rre,%[opc] << 16,%[ucbuf],%[cbuf]\n" |
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" brc 1,0b\n" /* handle partial completion */ |
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: [ucbuf] "+&d" (u.pair), [cbuf] "+&d" (c.pair) |
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: [fc] "K" (CPACF_PRNO_TRNG), [opc] "i" (CPACF_PRNO) |
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: "cc", "memory", "0"); |
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} |
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/** |
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* cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION) |
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* instruction |
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* @func: the function code passed to PCC; 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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*/ |
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static inline void cpacf_pcc(unsigned long func, void *param) |
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{ |
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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] << 16,0,0\n" /* PCC opcode */ |
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" brc 1,0b\n" /* handle partial completion */ |
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: |
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: [fc] "d" (func), [pba] "d" ((unsigned long)param), |
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[opc] "i" (CPACF_PCC) |
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: "cc", "memory", "0", "1"); |
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} |
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|
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/** |
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* cpacf_pckmo() - executes the PCKMO (PERFORM CRYPTOGRAPHIC KEY |
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* MANAGEMENT) instruction |
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* @func: the function code passed to PCKMO; see CPACF_PCKMO_xxx defines |
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* @param: address of parameter block; see POP for details on each func |
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* |
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* Returns 0. |
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*/ |
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static inline void cpacf_pckmo(long func, void *param) |
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{ |
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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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" .insn rre,%[opc] << 16,0,0\n" /* PCKMO opcode */ |
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: |
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: [fc] "d" (func), [pba] "d" ((unsigned long)param), |
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[opc] "i" (CPACF_PCKMO) |
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: "cc", "memory", "0", "1"); |
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} |
|
|
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/** |
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* cpacf_kma() - executes the KMA (CIPHER MESSAGE WITH AUTHENTICATION) |
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* instruction |
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* @func: the function code passed to KMA; see CPACF_KMA_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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* @aad: address of additional authenticated data memory area |
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* @aad_len: length of aad operand in bytes |
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*/ |
|
static inline void cpacf_kma(unsigned long func, void *param, u8 *dest, |
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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; |
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s.even = (unsigned long)src; |
|
s.odd = (unsigned long)src_len; |
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a.even = (unsigned long)aad; |
|
a.odd = (unsigned long)aad_len; |
|
asm volatile( |
|
" lgr 0,%[fc]\n" |
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" lgr 1,%[pba]\n" |
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"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) |
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: [fc] "d" (func), [pba] "d" ((unsigned long)param), |
|
[opc] "i" (CPACF_KMA) |
|
: "cc", "memory", "0", "1"); |
|
} |
|
|
|
#endif /* _ASM_S390_CPACF_H */
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