[deliverable/linux.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_PPNO		0xb93c		/* MSA5 */

/*
 * Decryption modifier bit
 */
#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_XTS_128	0x32
#define CPACF_KM_XTS_256	0x34

/*
 * 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_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

/*
 * 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 PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION)
 * instruction
 */
#define CPACF_PPNO_QUERY		0x00
#define CPACF_PPNO_SHA512_DRNG_GEN	0x03
#define CPACF_PPNO_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_PPNO:
		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_ppno() - executes the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION)
 *		  instruction
 * @func: the function code passed to PPNO; see CPACF_PPNO_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_ppno(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_PPNO)
		: "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");
}

#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 */
	27	#define CPACF_KMCTR 0xb92d /* MSA4 */
	28	#define CPACF_PPNO 0xb93c /* MSA5 */
	29
	30	/*
edc63a37 MS	31	* Decryption modifier bit
	32	*/
	33	#define CPACF_DECRYPT 0x80
	34
	35	/*
	36	* Function codes for the KM (CIPHER MESSAGE) instruction
c7d4d259 MS	37	*/
c7d4d259 MS	38	#define CPACF_KM_QUERY 0x00
edc63a37 MS	39	#define CPACF_KM_DEA 0x01
	40	#define CPACF_KM_TDEA_128 0x02
	41	#define CPACF_KM_TDEA_192 0x03
	42	#define CPACF_KM_AES_128 0x12
	43	#define CPACF_KM_AES_192 0x13
	44	#define CPACF_KM_AES_256 0x14
	45	#define CPACF_KM_XTS_128 0x32
	46	#define CPACF_KM_XTS_256 0x34
c7d4d259 MS	47
	48	/*
	49	* Function codes for the KMC (CIPHER MESSAGE WITH CHAINING)
edc63a37	50	* instruction
c7d4d259 MS	51	*/
c7d4d259 MS	52	#define CPACF_KMC_QUERY 0x00
edc63a37 MS	53	#define CPACF_KMC_DEA 0x01
	54	#define CPACF_KMC_TDEA_128 0x02
	55	#define CPACF_KMC_TDEA_192 0x03
	56	#define CPACF_KMC_AES_128 0x12
	57	#define CPACF_KMC_AES_192 0x13
	58	#define CPACF_KMC_AES_256 0x14
c7d4d259 MS	59	#define CPACF_KMC_PRNG 0x43
	60
	61	/*
	62	* Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER)
edc63a37	63	* instruction
c7d4d259	64	*/
edc63a37 MS	65	#define CPACF_KMCTR_QUERY 0x00
	66	#define CPACF_KMCTR_DEA 0x01
	67	#define CPACF_KMCTR_TDEA_128 0x02
	68	#define CPACF_KMCTR_TDEA_192 0x03
	69	#define CPACF_KMCTR_AES_128 0x12
	70	#define CPACF_KMCTR_AES_192 0x13
	71	#define CPACF_KMCTR_AES_256 0x14
c7d4d259 MS	72
	73	/*
	74	* Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
edc63a37	75	* instruction
c7d4d259 MS	76	*/
	77	#define CPACF_KIMD_QUERY 0x00
	78	#define CPACF_KIMD_SHA_1 0x01
	79	#define CPACF_KIMD_SHA_256 0x02
	80	#define CPACF_KIMD_SHA_512 0x03
	81	#define CPACF_KIMD_GHASH 0x41
	82
	83	/*
	84	* Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST)
edc63a37	85	* instruction
c7d4d259 MS	86	*/
	87	#define CPACF_KLMD_QUERY 0x00
	88	#define CPACF_KLMD_SHA_1 0x01
	89	#define CPACF_KLMD_SHA_256 0x02
	90	#define CPACF_KLMD_SHA_512 0x03
	91
	92	/*
	93	* function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
edc63a37	94	* instruction
c7d4d259 MS	95	*/
	96	#define CPACF_KMAC_QUERY 0x00
	97	#define CPACF_KMAC_DEA 0x01
	98	#define CPACF_KMAC_TDEA_128 0x02
	99	#define CPACF_KMAC_TDEA_192 0x03
	100
	101	/*
	102	* Function codes for the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION)
edc63a37	103	* instruction
c7d4d259 MS	104	*/
	105	#define CPACF_PPNO_QUERY 0x00
	106	#define CPACF_PPNO_SHA512_DRNG_GEN 0x03
	107	#define CPACF_PPNO_SHA512_DRNG_SEED 0x83
	108
69c0e360 MS	109	typedef struct { unsigned char bytes[16]; } cpacf_mask_t;
69c0e360 MS	110
c7d4d259 MS	111	/**
	112	* cpacf_query() - check if a specific CPACF function is available
	113	* @opcode: the opcode of the crypto instruction
	114	* @func: the function code to test for
	115	*
	116	* Executes the query function for the given crypto instruction @opcode
	117	* and checks if @func is available
	118	*
	119	* Returns 1 if @func is available for @opcode, 0 otherwise
	120	*/
69c0e360	121	static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
c7d4d259	122	{
c7d4d259	123	register unsigned long r0 asm("0") = 0; /* query function */
69c0e360	124	register unsigned long r1 asm("1") = (unsigned long) mask;
c7d4d259 MS	125
c7d4d259 MS	126	asm volatile(
1afd43e0	127	" spm 0\n" /* pckmo doesn't change the cc */
c7d4d259 MS	128	/* Parameter registers are ignored, but may not be 0 */
	129	"0: .insn rrf,%[opc] << 16,2,2,2,0\n"
	130	" brc 1,0b\n" /* handle partial completion */
69c0e360	131	: "=m" (*mask)
c7d4d259 MS	132	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode)
	133	: "cc");
	134	}
	135
69c0e360	136	static inline int __cpacf_check_opcode(unsigned int opcode)
c7d4d259	137	{
c7d4d259 MS	138	switch (opcode) {
	139	case CPACF_KMAC:
	140	case CPACF_KM:
	141	case CPACF_KMC:
	142	case CPACF_KIMD:
	143	case CPACF_KLMD:
69c0e360	144	return test_facility(17); /* check for MSA */
1afd43e0	145	case CPACF_PCKMO:
69c0e360	146	return test_facility(76); /* check for MSA3 */
1afd43e0 DH	147	case CPACF_KMF:
1afd43e0 DH	148	case CPACF_KMO:
c7d4d259 MS	149	case CPACF_PCC:
c7d4d259 MS	150	case CPACF_KMCTR:
69c0e360	151	return test_facility(77); /* check for MSA4 */
c7d4d259	152	case CPACF_PPNO:
69c0e360	153	return test_facility(57); /* check for MSA5 */
c7d4d259 MS	154	default:
	155	BUG();
	156	}
69c0e360 MS	157	}
	158
	159	static inline int cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
	160	{
	161	if (__cpacf_check_opcode(opcode)) {
	162	__cpacf_query(opcode, mask);
	163	return 1;
	164	}
	165	memset(mask, 0, sizeof(*mask));
	166	return 0;
	167	}
	168
	169	static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func)
	170	{
	171	return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0;
	172	}
	173
	174	static inline int cpacf_query_func(unsigned int opcode, unsigned int func)
	175	{
	176	cpacf_mask_t mask;
	177
	178	if (cpacf_query(opcode, &mask))
	179	return cpacf_test_func(&mask, func);
	180	return 0;
c7d4d259 MS	181	}
	182
	183	/**
	184	* cpacf_km() - executes the KM (CIPHER MESSAGE) instruction
	185	* @func: the function code passed to KM; see CPACF_KM_xxx defines
	186	* @param: address of parameter block; see POP for details on each func
	187	* @dest: address of destination memory area
	188	* @src: address of source memory area
	189	* @src_len: length of src operand in bytes
	190	*
	191	* Returns 0 for the query func, number of processed bytes for
	192	* encryption/decryption funcs
	193	*/
edc63a37	194	static inline int cpacf_km(unsigned long func, void *param,
c7d4d259 MS	195	u8 dest, const u8 src, long src_len)
	196	{
	197	register unsigned long r0 asm("0") = (unsigned long) func;
	198	register unsigned long r1 asm("1") = (unsigned long) param;
	199	register unsigned long r2 asm("2") = (unsigned long) src;
	200	register unsigned long r3 asm("3") = (unsigned long) src_len;
	201	register unsigned long r4 asm("4") = (unsigned long) dest;
	202
	203	asm volatile(
	204	"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
	205	" brc 1,0b\n" /* handle partial completion */
	206	: [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
	207	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KM)
	208	: "cc", "memory");
	209
	210	return src_len - r3;
	211	}
	212
	213	/**
	214	* cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction
	215	* @func: the function code passed to KM; see CPACF_KMC_xxx defines
	216	* @param: address of parameter block; see POP for details on each func
	217	* @dest: address of destination memory area
	218	* @src: address of source memory area
	219	* @src_len: length of src operand in bytes
	220	*
	221	* Returns 0 for the query func, number of processed bytes for
	222	* encryption/decryption funcs
	223	*/
edc63a37	224	static inline int cpacf_kmc(unsigned long func, void *param,
c7d4d259 MS	225	u8 dest, const u8 src, long src_len)
	226	{
	227	register unsigned long r0 asm("0") = (unsigned long) func;
	228	register unsigned long r1 asm("1") = (unsigned long) param;
	229	register unsigned long r2 asm("2") = (unsigned long) src;
	230	register unsigned long r3 asm("3") = (unsigned long) src_len;
	231	register unsigned long r4 asm("4") = (unsigned long) dest;
	232
	233	asm volatile(
	234	"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
	235	" brc 1,0b\n" /* handle partial completion */
	236	: [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
	237	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMC)
	238	: "cc", "memory");
	239
	240	return src_len - r3;
	241	}
	242
	243	/**
	244	* cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
	245	* instruction
	246	* @func: the function code passed to KM; see CPACF_KIMD_xxx defines
	247	* @param: address of parameter block; see POP for details on each func
	248	* @src: address of source memory area
	249	* @src_len: length of src operand in bytes
c7d4d259	250	*/
0177db01 MS	251	static inline void cpacf_kimd(unsigned long func, void *param,
0177db01 MS	252	const u8 *src, long src_len)
c7d4d259 MS	253	{
	254	register unsigned long r0 asm("0") = (unsigned long) func;
	255	register unsigned long r1 asm("1") = (unsigned long) param;
	256	register unsigned long r2 asm("2") = (unsigned long) src;
	257	register unsigned long r3 asm("3") = (unsigned long) src_len;
	258
	259	asm volatile(
	260	"0: .insn rre,%[opc] << 16,0,%[src]\n"
	261	" brc 1,0b\n" /* handle partial completion */
	262	: [src] "+a" (r2), [len] "+d" (r3)
	263	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KIMD)
	264	: "cc", "memory");
c7d4d259 MS	265	}
	266
	267	/**
	268	* cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction
	269	* @func: the function code passed to KM; see CPACF_KLMD_xxx defines
	270	* @param: address of parameter block; see POP for details on each func
	271	* @src: address of source memory area
	272	* @src_len: length of src operand in bytes
c7d4d259	273	*/
0177db01 MS	274	static inline void cpacf_klmd(unsigned long func, void *param,
0177db01 MS	275	const u8 *src, long src_len)
c7d4d259 MS	276	{
	277	register unsigned long r0 asm("0") = (unsigned long) func;
	278	register unsigned long r1 asm("1") = (unsigned long) param;
	279	register unsigned long r2 asm("2") = (unsigned long) src;
	280	register unsigned long r3 asm("3") = (unsigned long) src_len;
	281
	282	asm volatile(
	283	"0: .insn rre,%[opc] << 16,0,%[src]\n"
	284	" brc 1,0b\n" /* handle partial completion */
	285	: [src] "+a" (r2), [len] "+d" (r3)
	286	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KLMD)
	287	: "cc", "memory");
c7d4d259 MS	288	}
	289
	290	/**
	291	* cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
	292	* instruction
	293	* @func: the function code passed to KM; see CPACF_KMAC_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
	297	*
	298	* Returns 0 for the query func, number of processed bytes for digest funcs
	299	*/
edc63a37	300	static inline int cpacf_kmac(unsigned long func, void *param,
c7d4d259 MS	301	const u8 *src, long src_len)
	302	{
	303	register unsigned long r0 asm("0") = (unsigned long) func;
	304	register unsigned long r1 asm("1") = (unsigned long) param;
	305	register unsigned long r2 asm("2") = (unsigned long) src;
	306	register unsigned long r3 asm("3") = (unsigned long) src_len;
	307
	308	asm volatile(
	309	"0: .insn rre,%[opc] << 16,0,%[src]\n"
	310	" brc 1,0b\n" /* handle partial completion */
	311	: [src] "+a" (r2), [len] "+d" (r3)
	312	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMAC)
	313	: "cc", "memory");
	314
	315	return src_len - r3;
	316	}
	317
	318	/**
	319	* cpacf_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction
	320	* @func: the function code passed to KMCTR; see CPACF_KMCTR_xxx defines
	321	* @param: address of parameter block; see POP for details on each func
	322	* @dest: address of destination memory area
	323	* @src: address of source memory area
	324	* @src_len: length of src operand in bytes
	325	* @counter: address of counter value
	326	*
	327	* Returns 0 for the query func, number of processed bytes for
	328	* encryption/decryption funcs
	329	*/
edc63a37	330	static inline int cpacf_kmctr(unsigned long func, void param, u8 dest,
c7d4d259 MS	331	const u8 src, long src_len, u8 counter)
	332	{
	333	register unsigned long r0 asm("0") = (unsigned long) func;
	334	register unsigned long r1 asm("1") = (unsigned long) param;
	335	register unsigned long r2 asm("2") = (unsigned long) src;
	336	register unsigned long r3 asm("3") = (unsigned long) src_len;
	337	register unsigned long r4 asm("4") = (unsigned long) dest;
	338	register unsigned long r6 asm("6") = (unsigned long) counter;
	339
	340	asm volatile(
	341	"0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n"
	342	" brc 1,0b\n" /* handle partial completion */
	343	: [src] "+a" (r2), [len] "+d" (r3),
	344	[dst] "+a" (r4), [ctr] "+a" (r6)
	345	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMCTR)
	346	: "cc", "memory");
	347
	348	return src_len - r3;
	349	}
	350
	351	/**
	352	* cpacf_ppno() - executes the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION)
	353	* instruction
	354	* @func: the function code passed to PPNO; see CPACF_PPNO_xxx defines
	355	* @param: address of parameter block; see POP for details on each func
	356	* @dest: address of destination memory area
	357	* @dest_len: size of destination memory area in bytes
	358	* @seed: address of seed data
	359	* @seed_len: size of seed data in bytes
c7d4d259	360	*/
0177db01 MS	361	static inline void cpacf_ppno(unsigned long func, void *param,
	362	u8 *dest, long dest_len,
	363	const u8 *seed, long seed_len)
c7d4d259 MS	364	{
	365	register unsigned long r0 asm("0") = (unsigned long) func;
	366	register unsigned long r1 asm("1") = (unsigned long) param;
	367	register unsigned long r2 asm("2") = (unsigned long) dest;
	368	register unsigned long r3 asm("3") = (unsigned long) dest_len;
	369	register unsigned long r4 asm("4") = (unsigned long) seed;
	370	register unsigned long r5 asm("5") = (unsigned long) seed_len;
	371
	372	asm volatile (
	373	"0: .insn rre,%[opc] << 16,%[dst],%[seed]\n"
	374	" brc 1,0b\n" /* handle partial completion */
	375	: [dst] "+a" (r2), [dlen] "+d" (r3)
	376	: [fc] "d" (r0), [pba] "a" (r1),
	377	[seed] "a" (r4), [slen] "d" (r5), [opc] "i" (CPACF_PPNO)
	378	: "cc", "memory");
c7d4d259 MS	379	}
	380
	381	/**
	382	* cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION)
	383	* instruction
	384	* @func: the function code passed to PCC; see CPACF_KM_xxx defines
	385	* @param: address of parameter block; see POP for details on each func
c7d4d259	386	*/
0177db01	387	static inline void cpacf_pcc(unsigned long func, void *param)
c7d4d259 MS	388	{
	389	register unsigned long r0 asm("0") = (unsigned long) func;
	390	register unsigned long r1 asm("1") = (unsigned long) param;
	391
	392	asm volatile(
	393	"0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */
	394	" brc 1,0b\n" /* handle partial completion */
	395	:
	396	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCC)
	397	: "cc", "memory");
c7d4d259 MS	398	}
	399
	400	#endif /* _ASM_S390_CPACF_H */