[linux-2.6-block.git] / arch / s390 / include / asm / cpacf.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * CP Assist for Cryptographic Functions (CPACF)
 *
 * Copyright IBM Corp. 2003, 2016
 * Author(s): Thomas Spatzier
 *	      Jan Glauber
 *	      Harald Freudenberger (freude@de.ibm.com)
 *	      Martin Schwidefsky <schwidefsky@de.ibm.com>
 */
#ifndef _ASM_S390_CPACF_H
#define _ASM_S390_CPACF_H

#include <asm/facility.h>

/*
 * Instruction opcodes for the CPACF instructions
 */
#define CPACF_KMAC		0xb91e		/* MSA	*/
#define CPACF_KM		0xb92e		/* MSA	*/
#define CPACF_KMC		0xb92f		/* MSA	*/
#define CPACF_KIMD		0xb93e		/* MSA	*/
#define CPACF_KLMD		0xb93f		/* MSA	*/
#define CPACF_PCKMO		0xb928		/* MSA3 */
#define CPACF_KMF		0xb92a		/* MSA4 */
#define CPACF_KMO		0xb92b		/* MSA4 */
#define CPACF_PCC		0xb92c		/* MSA4 */
#define CPACF_KMCTR		0xb92d		/* MSA4 */
#define CPACF_PRNO		0xb93c		/* MSA5 */
#define CPACF_KMA		0xb929		/* MSA8 */

/*
 * En/decryption modifier bits
 */
#define CPACF_ENCRYPT		0x00
#define CPACF_DECRYPT		0x80

/*
 * Function codes for the KM (CIPHER MESSAGE) instruction
 */
#define CPACF_KM_QUERY		0x00
#define CPACF_KM_DEA		0x01
#define CPACF_KM_TDEA_128	0x02
#define CPACF_KM_TDEA_192	0x03
#define CPACF_KM_AES_128	0x12
#define CPACF_KM_AES_192	0x13
#define CPACF_KM_AES_256	0x14
#define CPACF_KM_PAES_128	0x1a
#define CPACF_KM_PAES_192	0x1b
#define CPACF_KM_PAES_256	0x1c
#define CPACF_KM_XTS_128	0x32
#define CPACF_KM_XTS_256	0x34
#define CPACF_KM_PXTS_128	0x3a
#define CPACF_KM_PXTS_256	0x3c

/*
 * Function codes for the KMC (CIPHER MESSAGE WITH CHAINING)
 * instruction
 */
#define CPACF_KMC_QUERY		0x00
#define CPACF_KMC_DEA		0x01
#define CPACF_KMC_TDEA_128	0x02
#define CPACF_KMC_TDEA_192	0x03
#define CPACF_KMC_AES_128	0x12
#define CPACF_KMC_AES_192	0x13
#define CPACF_KMC_AES_256	0x14
#define CPACF_KMC_PAES_128	0x1a
#define CPACF_KMC_PAES_192	0x1b
#define CPACF_KMC_PAES_256	0x1c
#define CPACF_KMC_PRNG		0x43

/*
 * Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER)
 * instruction
 */
#define CPACF_KMCTR_QUERY	0x00
#define CPACF_KMCTR_DEA		0x01
#define CPACF_KMCTR_TDEA_128	0x02
#define CPACF_KMCTR_TDEA_192	0x03
#define CPACF_KMCTR_AES_128	0x12
#define CPACF_KMCTR_AES_192	0x13
#define CPACF_KMCTR_AES_256	0x14
#define CPACF_KMCTR_PAES_128	0x1a
#define CPACF_KMCTR_PAES_192	0x1b
#define CPACF_KMCTR_PAES_256	0x1c

/*
 * Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
 * instruction
 */
#define CPACF_KIMD_QUERY	0x00
#define CPACF_KIMD_SHA_1	0x01
#define CPACF_KIMD_SHA_256	0x02
#define CPACF_KIMD_SHA_512	0x03
#define CPACF_KIMD_GHASH	0x41

/*
 * Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST)
 * instruction
 */
#define CPACF_KLMD_QUERY	0x00
#define CPACF_KLMD_SHA_1	0x01
#define CPACF_KLMD_SHA_256	0x02
#define CPACF_KLMD_SHA_512	0x03

/*
 * function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
 * instruction
 */
#define CPACF_KMAC_QUERY	0x00
#define CPACF_KMAC_DEA		0x01
#define CPACF_KMAC_TDEA_128	0x02
#define CPACF_KMAC_TDEA_192	0x03

/*
 * Function codes for the PCKMO (PERFORM CRYPTOGRAPHIC KEY MANAGEMENT)
 * instruction
 */
#define CPACF_PCKMO_QUERY		0x00
#define CPACF_PCKMO_ENC_DES_KEY		0x01
#define CPACF_PCKMO_ENC_TDES_128_KEY	0x02
#define CPACF_PCKMO_ENC_TDES_192_KEY	0x03
#define CPACF_PCKMO_ENC_AES_128_KEY	0x12
#define CPACF_PCKMO_ENC_AES_192_KEY	0x13
#define CPACF_PCKMO_ENC_AES_256_KEY	0x14

/*
 * Function codes for the PRNO (PERFORM RANDOM NUMBER OPERATION)
 * instruction
 */
#define CPACF_PRNO_QUERY		0x00
#define CPACF_PRNO_SHA512_DRNG_GEN	0x03
#define CPACF_PRNO_SHA512_DRNG_SEED	0x83
#define CPACF_PRNO_TRNG_Q_R2C_RATIO	0x70
#define CPACF_PRNO_TRNG			0x72

typedef struct { unsigned char bytes[16]; } cpacf_mask_t;

/**
 * cpacf_query() - check if a specific CPACF function is available
 * @opcode: the opcode of the crypto instruction
 * @func: the function code to test for
 *
 * Executes the query function for the given crypto instruction @opcode
 * and checks if @func is available
 *
 * Returns 1 if @func is available for @opcode, 0 otherwise
 */
static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
{
	register unsigned long r0 asm("0") = 0;	/* query function */
	register unsigned long r1 asm("1") = (unsigned long) mask;

	asm volatile(
		"	spm 0\n" /* pckmo doesn't change the cc */
		/* Parameter regs are ignored, but must be nonzero and unique */
		"0:	.insn	rrf,%[opc] << 16,2,4,6,0\n"
		"	brc	1,0b\n"	/* handle partial completion */
		: "=m" (*mask)
		: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode)
		: "cc");
}

static inline int __cpacf_check_opcode(unsigned int opcode)
{
	switch (opcode) {
	case CPACF_KMAC:
	case CPACF_KM:
	case CPACF_KMC:
	case CPACF_KIMD:
	case CPACF_KLMD:
		return test_facility(17);	/* check for MSA */
	case CPACF_PCKMO:
		return test_facility(76);	/* check for MSA3 */
	case CPACF_KMF:
	case CPACF_KMO:
	case CPACF_PCC:
	case CPACF_KMCTR:
		return test_facility(77);	/* check for MSA4 */
	case CPACF_PRNO:
		return test_facility(57);	/* check for MSA5 */
	default:
		BUG();
	}
}

static inline int cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
{
	if (__cpacf_check_opcode(opcode)) {
		__cpacf_query(opcode, mask);
		return 1;
	}
	memset(mask, 0, sizeof(*mask));
	return 0;
}

static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func)
{
	return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0;
}

static inline int cpacf_query_func(unsigned int opcode, unsigned int func)
{
	cpacf_mask_t mask;

	if (cpacf_query(opcode, &mask))
		return cpacf_test_func(&mask, func);
	return 0;
}

/**
 * cpacf_km() - executes the KM (CIPHER MESSAGE) instruction
 * @func: the function code passed to KM; see CPACF_KM_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
 *
 * Returns 0 for the query func, number of processed bytes for
 * encryption/decryption funcs
 */
static inline int cpacf_km(unsigned long func, void *param,
			   u8 *dest, const u8 *src, long src_len)
{
	register unsigned long r0 asm("0") = (unsigned long) func;
	register unsigned long r1 asm("1") = (unsigned long) param;
	register unsigned long r2 asm("2") = (unsigned long) src;
	register unsigned long r3 asm("3") = (unsigned long) src_len;
	register unsigned long r4 asm("4") = (unsigned long) dest;

	asm volatile(
		"0:	.insn	rre,%[opc] << 16,%[dst],%[src]\n"
		"	brc	1,0b\n" /* handle partial completion */
		: [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
		: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KM)
		: "cc", "memory");

	return src_len - r3;
}

/**
 * cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction
 * @func: the function code passed to KM; see CPACF_KMC_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
 *
 * Returns 0 for the query func, number of processed bytes for
 * encryption/decryption funcs
 */
static inline int cpacf_kmc(unsigned long func, void *param,
			    u8 *dest, const u8 *src, long src_len)
{
	register unsigned long r0 asm("0") = (unsigned long) func;
	register unsigned long r1 asm("1") = (unsigned long) param;
	register unsigned long r2 asm("2") = (unsigned long) src;
	register unsigned long r3 asm("3") = (unsigned long) src_len;
	register unsigned long r4 asm("4") = (unsigned long) dest;

	asm volatile(
		"0:	.insn	rre,%[opc] << 16,%[dst],%[src]\n"
		"	brc	1,0b\n" /* handle partial completion */
		: [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
		: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMC)
		: "cc", "memory");

	return src_len - r3;
}

/**
 * cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
 *		  instruction
 * @func: the function code passed to KM; see CPACF_KIMD_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
 */
static inline void cpacf_kimd(unsigned long func, void *param,
			      const u8 *src, long src_len)
{
	register unsigned long r0 asm("0") = (unsigned long) func;
	register unsigned long r1 asm("1") = (unsigned long) param;
	register unsigned long r2 asm("2") = (unsigned long) src;
	register unsigned long r3 asm("3") = (unsigned long) src_len;

	asm volatile(
		"0:	.insn	rre,%[opc] << 16,0,%[src]\n"
		"	brc	1,0b\n" /* handle partial completion */
		: [src] "+a" (r2), [len] "+d" (r3)
		: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KIMD)
		: "cc", "memory");
}

/**
 * cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction
 * @func: the function code passed to KM; see CPACF_KLMD_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
 */
static inline void cpacf_klmd(unsigned long func, void *param,
			      const u8 *src, long src_len)
{
	register unsigned long r0 asm("0") = (unsigned long) func;
	register unsigned long r1 asm("1") = (unsigned long) param;
	register unsigned long r2 asm("2") = (unsigned long) src;
	register unsigned long r3 asm("3") = (unsigned long) src_len;

	asm volatile(
		"0:	.insn	rre,%[opc] << 16,0,%[src]\n"
		"	brc	1,0b\n" /* handle partial completion */
		: [src] "+a" (r2), [len] "+d" (r3)
		: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KLMD)
		: "cc", "memory");
}

/**
 * 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)
{
	register unsigned long r0 asm("0") = (unsigned long) func;
	register unsigned long r1 asm("1") = (unsigned long) param;
	register unsigned long r2 asm("2") = (unsigned long) src;
	register unsigned long r3 asm("3") = (unsigned long) src_len;

	asm volatile(
		"0:	.insn	rre,%[opc] << 16,0,%[src]\n"
		"	brc	1,0b\n" /* handle partial completion */
		: [src] "+a" (r2), [len] "+d" (r3)
		: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMAC)
		: "cc", "memory");

	return src_len - r3;
}

/**
 * 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)
{
	register unsigned long r0 asm("0") = (unsigned long) func;
	register unsigned long r1 asm("1") = (unsigned long) param;
	register unsigned long r2 asm("2") = (unsigned long) src;
	register unsigned long r3 asm("3") = (unsigned long) src_len;
	register unsigned long r4 asm("4") = (unsigned long) dest;
	register unsigned long r6 asm("6") = (unsigned long) counter;

	asm volatile(
		"0:	.insn	rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n"
		"	brc	1,0b\n" /* handle partial completion */
		: [src] "+a" (r2), [len] "+d" (r3),
		  [dst] "+a" (r4), [ctr] "+a" (r6)
		: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMCTR)
		: "cc", "memory");

	return src_len - r3;
}

/**
 * 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)
{
	register unsigned long r0 asm("0") = (unsigned long) func;
	register unsigned long r1 asm("1") = (unsigned long) param;
	register unsigned long r2 asm("2") = (unsigned long) dest;
	register unsigned long r3 asm("3") = (unsigned long) dest_len;
	register unsigned long r4 asm("4") = (unsigned long) seed;
	register unsigned long r5 asm("5") = (unsigned long) seed_len;

	asm volatile (
		"0:	.insn	rre,%[opc] << 16,%[dst],%[seed]\n"
		"	brc	1,0b\n"	  /* handle partial completion */
		: [dst] "+a" (r2), [dlen] "+d" (r3)
		: [fc] "d" (r0), [pba] "a" (r1),
		  [seed] "a" (r4), [slen] "d" (r5), [opc] "i" (CPACF_PRNO)
		: "cc", "memory");
}

/**
 * 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)
{
	register unsigned long r0 asm("0") = (unsigned long) CPACF_PRNO_TRNG;
	register unsigned long r2 asm("2") = (unsigned long) ucbuf;
	register unsigned long r3 asm("3") = (unsigned long) ucbuf_len;
	register unsigned long r4 asm("4") = (unsigned long) cbuf;
	register unsigned long r5 asm("5") = (unsigned long) cbuf_len;

	asm volatile (
		"0:	.insn	rre,%[opc] << 16,%[ucbuf],%[cbuf]\n"
		"	brc	1,0b\n"	  /* handle partial completion */
		: [ucbuf] "+a" (r2), [ucbuflen] "+d" (r3),
		  [cbuf] "+a" (r4), [cbuflen] "+d" (r5)
		: [fc] "d" (r0), [opc] "i" (CPACF_PRNO)
		: "cc", "memory");
}

/**
 * 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)
{
	register unsigned long r0 asm("0") = (unsigned long) func;
	register unsigned long r1 asm("1") = (unsigned long) param;

	asm volatile(
		"0:	.insn	rre,%[opc] << 16,0,0\n" /* PCC opcode */
		"	brc	1,0b\n" /* handle partial completion */
		:
		: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCC)
		: "cc", "memory");
}

/**
 * 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)
{
	register unsigned long r0 asm("0") = (unsigned long) func;
	register unsigned long r1 asm("1") = (unsigned long) param;

	asm volatile(
		"       .insn   rre,%[opc] << 16,0,0\n" /* PCKMO opcode */
		:
		: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCKMO)
		: "cc", "memory");
}

#endif	/* _ASM_S390_CPACF_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
c7d4d259 MS	2	/*
	3	* CP Assist for Cryptographic Functions (CPACF)
	4	*
	5	* Copyright IBM Corp. 2003, 2016
	6	* Author(s): Thomas Spatzier
	7	* Jan Glauber
	8	* Harald Freudenberger (freude@de.ibm.com)
	9	* Martin Schwidefsky <schwidefsky@de.ibm.com>
	10	*/
	11	#ifndef _ASM_S390_CPACF_H
	12	#define _ASM_S390_CPACF_H
	13
	14	#include <asm/facility.h>
	15
	16	/*
	17	* Instruction opcodes for the CPACF instructions
	18	*/
	19	#define CPACF_KMAC 0xb91e /* MSA */
	20	#define CPACF_KM 0xb92e /* MSA */
	21	#define CPACF_KMC 0xb92f /* MSA */
	22	#define CPACF_KIMD 0xb93e /* MSA */
	23	#define CPACF_KLMD 0xb93f /* MSA */
1afd43e0 DH	24	#define CPACF_PCKMO 0xb928 /* MSA3 */
	25	#define CPACF_KMF 0xb92a /* MSA4 */
	26	#define CPACF_KMO 0xb92b /* MSA4 */
c7d4d259 MS	27	#define CPACF_PCC 0xb92c /* MSA4 */
c7d4d259 MS	28	#define CPACF_KMCTR 0xb92d /* MSA4 */
985a9d20	29	#define CPACF_PRNO 0xb93c /* MSA5 */
152c1c8d	30	#define CPACF_KMA 0xb929 /* MSA8 */
c7d4d259 MS	31
c7d4d259 MS	32	/*
27937843	33	* En/decryption modifier bits
edc63a37	34	*/
27937843	35	#define CPACF_ENCRYPT 0x00
edc63a37 MS	36	#define CPACF_DECRYPT 0x80
	37
	38	/*
	39	* Function codes for the KM (CIPHER MESSAGE) instruction
c7d4d259 MS	40	*/
c7d4d259 MS	41	#define CPACF_KM_QUERY 0x00
edc63a37 MS	42	#define CPACF_KM_DEA 0x01
	43	#define CPACF_KM_TDEA_128 0x02
	44	#define CPACF_KM_TDEA_192 0x03
	45	#define CPACF_KM_AES_128 0x12
	46	#define CPACF_KM_AES_192 0x13
	47	#define CPACF_KM_AES_256 0x14
27937843 MS	48	#define CPACF_KM_PAES_128 0x1a
	49	#define CPACF_KM_PAES_192 0x1b
	50	#define CPACF_KM_PAES_256 0x1c
edc63a37 MS	51	#define CPACF_KM_XTS_128 0x32
edc63a37 MS	52	#define CPACF_KM_XTS_256 0x34
27937843 MS	53	#define CPACF_KM_PXTS_128 0x3a
27937843 MS	54	#define CPACF_KM_PXTS_256 0x3c
c7d4d259 MS	55
	56	/*
	57	* Function codes for the KMC (CIPHER MESSAGE WITH CHAINING)
edc63a37	58	* instruction
c7d4d259 MS	59	*/
c7d4d259 MS	60	#define CPACF_KMC_QUERY 0x00
edc63a37 MS	61	#define CPACF_KMC_DEA 0x01
	62	#define CPACF_KMC_TDEA_128 0x02
	63	#define CPACF_KMC_TDEA_192 0x03
	64	#define CPACF_KMC_AES_128 0x12
	65	#define CPACF_KMC_AES_192 0x13
	66	#define CPACF_KMC_AES_256 0x14
27937843 MS	67	#define CPACF_KMC_PAES_128 0x1a
	68	#define CPACF_KMC_PAES_192 0x1b
	69	#define CPACF_KMC_PAES_256 0x1c
c7d4d259 MS	70	#define CPACF_KMC_PRNG 0x43
	71
	72	/*
	73	* Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER)
edc63a37	74	* instruction
c7d4d259	75	*/
edc63a37 MS	76	#define CPACF_KMCTR_QUERY 0x00
	77	#define CPACF_KMCTR_DEA 0x01
	78	#define CPACF_KMCTR_TDEA_128 0x02
	79	#define CPACF_KMCTR_TDEA_192 0x03
	80	#define CPACF_KMCTR_AES_128 0x12
	81	#define CPACF_KMCTR_AES_192 0x13
	82	#define CPACF_KMCTR_AES_256 0x14
27937843 MS	83	#define CPACF_KMCTR_PAES_128 0x1a
	84	#define CPACF_KMCTR_PAES_192 0x1b
	85	#define CPACF_KMCTR_PAES_256 0x1c
c7d4d259 MS	86
	87	/*
	88	* Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
edc63a37	89	* instruction
c7d4d259 MS	90	*/
	91	#define CPACF_KIMD_QUERY 0x00
	92	#define CPACF_KIMD_SHA_1 0x01
	93	#define CPACF_KIMD_SHA_256 0x02
	94	#define CPACF_KIMD_SHA_512 0x03
	95	#define CPACF_KIMD_GHASH 0x41
	96
	97	/*
	98	* Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST)
edc63a37	99	* instruction
c7d4d259 MS	100	*/
	101	#define CPACF_KLMD_QUERY 0x00
	102	#define CPACF_KLMD_SHA_1 0x01
	103	#define CPACF_KLMD_SHA_256 0x02
	104	#define CPACF_KLMD_SHA_512 0x03
	105
	106	/*
	107	* function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
edc63a37	108	* instruction
c7d4d259 MS	109	*/
	110	#define CPACF_KMAC_QUERY 0x00
	111	#define CPACF_KMAC_DEA 0x01
	112	#define CPACF_KMAC_TDEA_128 0x02
	113	#define CPACF_KMAC_TDEA_192 0x03
	114
77606708 HF	115	/*
	116	* Function codes for the PCKMO (PERFORM CRYPTOGRAPHIC KEY MANAGEMENT)
	117	* instruction
	118	*/
	119	#define CPACF_PCKMO_QUERY 0x00
	120	#define CPACF_PCKMO_ENC_DES_KEY 0x01
	121	#define CPACF_PCKMO_ENC_TDES_128_KEY 0x02
	122	#define CPACF_PCKMO_ENC_TDES_192_KEY 0x03
	123	#define CPACF_PCKMO_ENC_AES_128_KEY 0x12
	124	#define CPACF_PCKMO_ENC_AES_192_KEY 0x13
	125	#define CPACF_PCKMO_ENC_AES_256_KEY 0x14
	126
c7d4d259	127	/*
985a9d20	128	* Function codes for the PRNO (PERFORM RANDOM NUMBER OPERATION)
edc63a37	129	* instruction
c7d4d259	130	*/
985a9d20 HF	131	#define CPACF_PRNO_QUERY 0x00
	132	#define CPACF_PRNO_SHA512_DRNG_GEN 0x03
	133	#define CPACF_PRNO_SHA512_DRNG_SEED 0x83
f75fa65d HF	134	#define CPACF_PRNO_TRNG_Q_R2C_RATIO 0x70
f75fa65d HF	135	#define CPACF_PRNO_TRNG 0x72
c7d4d259	136
69c0e360 MS	137	typedef struct { unsigned char bytes[16]; } cpacf_mask_t;
69c0e360 MS	138
c7d4d259 MS	139	/**
	140	* cpacf_query() - check if a specific CPACF function is available
	141	* @opcode: the opcode of the crypto instruction
	142	* @func: the function code to test for
	143	*
	144	* Executes the query function for the given crypto instruction @opcode
	145	* and checks if @func is available
	146	*
	147	* Returns 1 if @func is available for @opcode, 0 otherwise
	148	*/
69c0e360	149	static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
c7d4d259	150	{
c7d4d259	151	register unsigned long r0 asm("0") = 0; /* query function */
69c0e360	152	register unsigned long r1 asm("1") = (unsigned long) mask;
c7d4d259 MS	153
c7d4d259 MS	154	asm volatile(
1afd43e0	155	" spm 0\n" /* pckmo doesn't change the cc */
b112a2df JH	156	/* Parameter regs are ignored, but must be nonzero and unique */
b112a2df JH	157	"0: .insn rrf,%[opc] << 16,2,4,6,0\n"
c7d4d259	158	" brc 1,0b\n" /* handle partial completion */
69c0e360	159	: "=m" (*mask)
c7d4d259 MS	160	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode)
	161	: "cc");
	162	}
	163
69c0e360	164	static inline int __cpacf_check_opcode(unsigned int opcode)
c7d4d259	165	{
c7d4d259 MS	166	switch (opcode) {
	167	case CPACF_KMAC:
	168	case CPACF_KM:
	169	case CPACF_KMC:
	170	case CPACF_KIMD:
	171	case CPACF_KLMD:
69c0e360	172	return test_facility(17); /* check for MSA */
1afd43e0	173	case CPACF_PCKMO:
69c0e360	174	return test_facility(76); /* check for MSA3 */
1afd43e0 DH	175	case CPACF_KMF:
1afd43e0 DH	176	case CPACF_KMO:
c7d4d259 MS	177	case CPACF_PCC:
c7d4d259 MS	178	case CPACF_KMCTR:
69c0e360	179	return test_facility(77); /* check for MSA4 */
985a9d20	180	case CPACF_PRNO:
69c0e360	181	return test_facility(57); /* check for MSA5 */
c7d4d259 MS	182	default:
	183	BUG();
	184	}
69c0e360 MS	185	}
	186
	187	static inline int cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
	188	{
	189	if (__cpacf_check_opcode(opcode)) {
	190	__cpacf_query(opcode, mask);
	191	return 1;
	192	}
	193	memset(mask, 0, sizeof(*mask));
	194	return 0;
	195	}
	196
	197	static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func)
	198	{
	199	return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0;
	200	}
	201
	202	static inline int cpacf_query_func(unsigned int opcode, unsigned int func)
	203	{
	204	cpacf_mask_t mask;
	205
	206	if (cpacf_query(opcode, &mask))
	207	return cpacf_test_func(&mask, func);
	208	return 0;
c7d4d259 MS	209	}
	210
	211	/**
	212	* cpacf_km() - executes the KM (CIPHER MESSAGE) instruction
	213	* @func: the function code passed to KM; see CPACF_KM_xxx defines
	214	* @param: address of parameter block; see POP for details on each func
	215	* @dest: address of destination memory area
	216	* @src: address of source memory area
	217	* @src_len: length of src operand in bytes
	218	*
	219	* Returns 0 for the query func, number of processed bytes for
	220	* encryption/decryption funcs
	221	*/
edc63a37	222	static inline int cpacf_km(unsigned long func, void *param,
c7d4d259 MS	223	u8 dest, const u8 src, long src_len)
	224	{
	225	register unsigned long r0 asm("0") = (unsigned long) func;
	226	register unsigned long r1 asm("1") = (unsigned long) param;
	227	register unsigned long r2 asm("2") = (unsigned long) src;
	228	register unsigned long r3 asm("3") = (unsigned long) src_len;
	229	register unsigned long r4 asm("4") = (unsigned long) dest;
	230
	231	asm volatile(
	232	"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
	233	" brc 1,0b\n" /* handle partial completion */
	234	: [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
	235	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KM)
	236	: "cc", "memory");
	237
	238	return src_len - r3;
	239	}
	240
	241	/**
	242	* cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction
	243	* @func: the function code passed to KM; see CPACF_KMC_xxx defines
	244	* @param: address of parameter block; see POP for details on each func
	245	* @dest: address of destination memory area
	246	* @src: address of source memory area
	247	* @src_len: length of src operand in bytes
	248	*
	249	* Returns 0 for the query func, number of processed bytes for
	250	* encryption/decryption funcs
	251	*/
edc63a37	252	static inline int cpacf_kmc(unsigned long func, void *param,
c7d4d259 MS	253	u8 dest, const u8 src, long src_len)
	254	{
	255	register unsigned long r0 asm("0") = (unsigned long) func;
	256	register unsigned long r1 asm("1") = (unsigned long) param;
	257	register unsigned long r2 asm("2") = (unsigned long) src;
	258	register unsigned long r3 asm("3") = (unsigned long) src_len;
	259	register unsigned long r4 asm("4") = (unsigned long) dest;
	260
	261	asm volatile(
	262	"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
	263	" brc 1,0b\n" /* handle partial completion */
	264	: [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
	265	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMC)
	266	: "cc", "memory");
	267
	268	return src_len - r3;
	269	}
	270
	271	/**
	272	* cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
	273	* instruction
	274	* @func: the function code passed to KM; see CPACF_KIMD_xxx defines
	275	* @param: address of parameter block; see POP for details on each func
	276	* @src: address of source memory area
	277	* @src_len: length of src operand in bytes
c7d4d259	278	*/
0177db01 MS	279	static inline void cpacf_kimd(unsigned long func, void *param,
0177db01 MS	280	const u8 *src, long src_len)
c7d4d259 MS	281	{
	282	register unsigned long r0 asm("0") = (unsigned long) func;
	283	register unsigned long r1 asm("1") = (unsigned long) param;
	284	register unsigned long r2 asm("2") = (unsigned long) src;
	285	register unsigned long r3 asm("3") = (unsigned long) src_len;
	286
	287	asm volatile(
	288	"0: .insn rre,%[opc] << 16,0,%[src]\n"
	289	" brc 1,0b\n" /* handle partial completion */
	290	: [src] "+a" (r2), [len] "+d" (r3)
	291	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KIMD)
	292	: "cc", "memory");
c7d4d259 MS	293	}
	294
	295	/**
	296	* cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction
	297	* @func: the function code passed to KM; see CPACF_KLMD_xxx defines
	298	* @param: address of parameter block; see POP for details on each func
	299	* @src: address of source memory area
	300	* @src_len: length of src operand in bytes
c7d4d259	301	*/
0177db01 MS	302	static inline void cpacf_klmd(unsigned long func, void *param,
0177db01 MS	303	const u8 *src, long src_len)
c7d4d259 MS	304	{
	305	register unsigned long r0 asm("0") = (unsigned long) func;
	306	register unsigned long r1 asm("1") = (unsigned long) param;
	307	register unsigned long r2 asm("2") = (unsigned long) src;
	308	register unsigned long r3 asm("3") = (unsigned long) src_len;
	309
	310	asm volatile(
	311	"0: .insn rre,%[opc] << 16,0,%[src]\n"
	312	" brc 1,0b\n" /* handle partial completion */
	313	: [src] "+a" (r2), [len] "+d" (r3)
	314	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KLMD)
	315	: "cc", "memory");
c7d4d259 MS	316	}
	317
	318	/**
	319	* cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
	320	* instruction
	321	* @func: the function code passed to KM; see CPACF_KMAC_xxx defines
	322	* @param: address of parameter block; see POP for details on each func
	323	* @src: address of source memory area
	324	* @src_len: length of src operand in bytes
	325	*
	326	* Returns 0 for the query func, number of processed bytes for digest funcs
	327	*/
edc63a37	328	static inline int cpacf_kmac(unsigned long func, void *param,
c7d4d259 MS	329	const u8 *src, long src_len)
	330	{
	331	register unsigned long r0 asm("0") = (unsigned long) func;
	332	register unsigned long r1 asm("1") = (unsigned long) param;
	333	register unsigned long r2 asm("2") = (unsigned long) src;
	334	register unsigned long r3 asm("3") = (unsigned long) src_len;
	335
	336	asm volatile(
	337	"0: .insn rre,%[opc] << 16,0,%[src]\n"
	338	" brc 1,0b\n" /* handle partial completion */
	339	: [src] "+a" (r2), [len] "+d" (r3)
	340	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMAC)
	341	: "cc", "memory");
	342
	343	return src_len - r3;
	344	}
	345
	346	/**
	347	* cpacf_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction
	348	* @func: the function code passed to KMCTR; see CPACF_KMCTR_xxx defines
	349	* @param: address of parameter block; see POP for details on each func
	350	* @dest: address of destination memory area
	351	* @src: address of source memory area
	352	* @src_len: length of src operand in bytes
	353	* @counter: address of counter value
	354	*
	355	* Returns 0 for the query func, number of processed bytes for
	356	* encryption/decryption funcs
	357	*/
edc63a37	358	static inline int cpacf_kmctr(unsigned long func, void param, u8 dest,
c7d4d259 MS	359	const u8 src, long src_len, u8 counter)
	360	{
	361	register unsigned long r0 asm("0") = (unsigned long) func;
	362	register unsigned long r1 asm("1") = (unsigned long) param;
	363	register unsigned long r2 asm("2") = (unsigned long) src;
	364	register unsigned long r3 asm("3") = (unsigned long) src_len;
	365	register unsigned long r4 asm("4") = (unsigned long) dest;
	366	register unsigned long r6 asm("6") = (unsigned long) counter;
	367
	368	asm volatile(
	369	"0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n"
	370	" brc 1,0b\n" /* handle partial completion */
	371	: [src] "+a" (r2), [len] "+d" (r3),
	372	[dst] "+a" (r4), [ctr] "+a" (r6)
	373	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMCTR)
	374	: "cc", "memory");
	375
	376	return src_len - r3;
	377	}
	378
	379	/**
985a9d20	380	* cpacf_prno() - executes the PRNO (PERFORM RANDOM NUMBER OPERATION)
c7d4d259	381	* instruction
985a9d20	382	* @func: the function code passed to PRNO; see CPACF_PRNO_xxx defines
c7d4d259 MS	383	* @param: address of parameter block; see POP for details on each func
	384	* @dest: address of destination memory area
	385	* @dest_len: size of destination memory area in bytes
	386	* @seed: address of seed data
	387	* @seed_len: size of seed data in bytes
c7d4d259	388	*/
985a9d20	389	static inline void cpacf_prno(unsigned long func, void *param,
f75fa65d HF	390	u8 *dest, unsigned long dest_len,
f75fa65d HF	391	const u8 *seed, unsigned long seed_len)
c7d4d259 MS	392	{
	393	register unsigned long r0 asm("0") = (unsigned long) func;
	394	register unsigned long r1 asm("1") = (unsigned long) param;
	395	register unsigned long r2 asm("2") = (unsigned long) dest;
	396	register unsigned long r3 asm("3") = (unsigned long) dest_len;
	397	register unsigned long r4 asm("4") = (unsigned long) seed;
	398	register unsigned long r5 asm("5") = (unsigned long) seed_len;
	399
	400	asm volatile (
	401	"0: .insn rre,%[opc] << 16,%[dst],%[seed]\n"
	402	" brc 1,0b\n" /* handle partial completion */
	403	: [dst] "+a" (r2), [dlen] "+d" (r3)
	404	: [fc] "d" (r0), [pba] "a" (r1),
985a9d20	405	[seed] "a" (r4), [slen] "d" (r5), [opc] "i" (CPACF_PRNO)
c7d4d259	406	: "cc", "memory");
c7d4d259 MS	407	}
c7d4d259 MS	408
f75fa65d HF	409	/**
	410	* cpacf_trng() - executes the TRNG subfunction of the PRNO instruction
	411	* @ucbuf: buffer for unconditioned data
	412	* @ucbuf_len: amount of unconditioned data to fetch in bytes
	413	* @cbuf: buffer for conditioned data
	414	* @cbuf_len: amount of conditioned data to fetch in bytes
	415	*/
	416	static inline void cpacf_trng(u8 *ucbuf, unsigned long ucbuf_len,
	417	u8 *cbuf, unsigned long cbuf_len)
	418	{
	419	register unsigned long r0 asm("0") = (unsigned long) CPACF_PRNO_TRNG;
	420	register unsigned long r2 asm("2") = (unsigned long) ucbuf;
	421	register unsigned long r3 asm("3") = (unsigned long) ucbuf_len;
	422	register unsigned long r4 asm("4") = (unsigned long) cbuf;
	423	register unsigned long r5 asm("5") = (unsigned long) cbuf_len;
	424
	425	asm volatile (
	426	"0: .insn rre,%[opc] << 16,%[ucbuf],%[cbuf]\n"
	427	" brc 1,0b\n" /* handle partial completion */
	428	: [ucbuf] "+a" (r2), [ucbuflen] "+d" (r3),
	429	[cbuf] "+a" (r4), [cbuflen] "+d" (r5)
	430	: [fc] "d" (r0), [opc] "i" (CPACF_PRNO)
	431	: "cc", "memory");
	432	}
	433
c7d4d259 MS	434	/**
	435	* cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION)
	436	* instruction
	437	* @func: the function code passed to PCC; see CPACF_KM_xxx defines
	438	* @param: address of parameter block; see POP for details on each func
c7d4d259	439	*/
0177db01	440	static inline void cpacf_pcc(unsigned long func, void *param)
c7d4d259 MS	441	{
	442	register unsigned long r0 asm("0") = (unsigned long) func;
	443	register unsigned long r1 asm("1") = (unsigned long) param;
	444
	445	asm volatile(
	446	"0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */
	447	" brc 1,0b\n" /* handle partial completion */
	448	:
	449	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCC)
	450	: "cc", "memory");
c7d4d259 MS	451	}
c7d4d259 MS	452
77606708 HF	453	/**
	454	* cpacf_pckmo() - executes the PCKMO (PERFORM CRYPTOGRAPHIC KEY
	455	* MANAGEMENT) instruction
	456	* @func: the function code passed to PCKMO; see CPACF_PCKMO_xxx defines
	457	* @param: address of parameter block; see POP for details on each func
	458	*
	459	* Returns 0.
	460	*/
	461	static inline void cpacf_pckmo(long func, void *param)
	462	{
	463	register unsigned long r0 asm("0") = (unsigned long) func;
	464	register unsigned long r1 asm("1") = (unsigned long) param;
	465
	466	asm volatile(
	467	" .insn rre,%[opc] << 16,0,0\n" /* PCKMO opcode */
	468	:
	469	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCKMO)
	470	: "cc", "memory");
	471	}
	472
c7d4d259	473	#endif /* _ASM_S390_CPACF_H */