[mirror_ubuntu-focal-kernel.git] / arch / s390 / include / asm / cpacf.h

/*
 * 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 */

/*
 * 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

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