[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_PPNO		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 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 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_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");
}

/**
 * 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 */
	27	#define CPACF_KMCTR 0xb92d /* MSA4 */
	28	#define CPACF_PPNO 0xb93c /* MSA5 */
152c1c8d	29	#define CPACF_KMA 0xb929 /* MSA8 */
c7d4d259 MS	30
c7d4d259 MS	31	/*
27937843	32	* En/decryption modifier bits
edc63a37	33	*/
27937843	34	#define CPACF_ENCRYPT 0x00
edc63a37 MS	35	#define CPACF_DECRYPT 0x80
	36
	37	/*
	38	* Function codes for the KM (CIPHER MESSAGE) instruction
c7d4d259 MS	39	*/
c7d4d259 MS	40	#define CPACF_KM_QUERY 0x00
edc63a37 MS	41	#define CPACF_KM_DEA 0x01
	42	#define CPACF_KM_TDEA_128 0x02
	43	#define CPACF_KM_TDEA_192 0x03
	44	#define CPACF_KM_AES_128 0x12
	45	#define CPACF_KM_AES_192 0x13
	46	#define CPACF_KM_AES_256 0x14
27937843 MS	47	#define CPACF_KM_PAES_128 0x1a
	48	#define CPACF_KM_PAES_192 0x1b
	49	#define CPACF_KM_PAES_256 0x1c
edc63a37 MS	50	#define CPACF_KM_XTS_128 0x32
edc63a37 MS	51	#define CPACF_KM_XTS_256 0x34
27937843 MS	52	#define CPACF_KM_PXTS_128 0x3a
27937843 MS	53	#define CPACF_KM_PXTS_256 0x3c
c7d4d259 MS	54
	55	/*
	56	* Function codes for the KMC (CIPHER MESSAGE WITH CHAINING)
edc63a37	57	* instruction
c7d4d259 MS	58	*/
c7d4d259 MS	59	#define CPACF_KMC_QUERY 0x00
edc63a37 MS	60	#define CPACF_KMC_DEA 0x01
	61	#define CPACF_KMC_TDEA_128 0x02
	62	#define CPACF_KMC_TDEA_192 0x03
	63	#define CPACF_KMC_AES_128 0x12
	64	#define CPACF_KMC_AES_192 0x13
	65	#define CPACF_KMC_AES_256 0x14
27937843 MS	66	#define CPACF_KMC_PAES_128 0x1a
	67	#define CPACF_KMC_PAES_192 0x1b
	68	#define CPACF_KMC_PAES_256 0x1c
c7d4d259 MS	69	#define CPACF_KMC_PRNG 0x43
	70
	71	/*
	72	* Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER)
edc63a37	73	* instruction
c7d4d259	74	*/
edc63a37 MS	75	#define CPACF_KMCTR_QUERY 0x00
	76	#define CPACF_KMCTR_DEA 0x01
	77	#define CPACF_KMCTR_TDEA_128 0x02
	78	#define CPACF_KMCTR_TDEA_192 0x03
	79	#define CPACF_KMCTR_AES_128 0x12
	80	#define CPACF_KMCTR_AES_192 0x13
	81	#define CPACF_KMCTR_AES_256 0x14
27937843 MS	82	#define CPACF_KMCTR_PAES_128 0x1a
	83	#define CPACF_KMCTR_PAES_192 0x1b
	84	#define CPACF_KMCTR_PAES_256 0x1c
c7d4d259 MS	85
	86	/*
	87	* Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
edc63a37	88	* instruction
c7d4d259 MS	89	*/
	90	#define CPACF_KIMD_QUERY 0x00
	91	#define CPACF_KIMD_SHA_1 0x01
	92	#define CPACF_KIMD_SHA_256 0x02
	93	#define CPACF_KIMD_SHA_512 0x03
	94	#define CPACF_KIMD_GHASH 0x41
	95
	96	/*
	97	* Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST)
edc63a37	98	* instruction
c7d4d259 MS	99	*/
	100	#define CPACF_KLMD_QUERY 0x00
	101	#define CPACF_KLMD_SHA_1 0x01
	102	#define CPACF_KLMD_SHA_256 0x02
	103	#define CPACF_KLMD_SHA_512 0x03
	104
	105	/*
	106	* function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
edc63a37	107	* instruction
c7d4d259 MS	108	*/
	109	#define CPACF_KMAC_QUERY 0x00
	110	#define CPACF_KMAC_DEA 0x01
	111	#define CPACF_KMAC_TDEA_128 0x02
	112	#define CPACF_KMAC_TDEA_192 0x03
	113
77606708 HF	114	/*
	115	* Function codes for the PCKMO (PERFORM CRYPTOGRAPHIC KEY MANAGEMENT)
	116	* instruction
	117	*/
	118	#define CPACF_PCKMO_QUERY 0x00
	119	#define CPACF_PCKMO_ENC_DES_KEY 0x01
	120	#define CPACF_PCKMO_ENC_TDES_128_KEY 0x02
	121	#define CPACF_PCKMO_ENC_TDES_192_KEY 0x03
	122	#define CPACF_PCKMO_ENC_AES_128_KEY 0x12
	123	#define CPACF_PCKMO_ENC_AES_192_KEY 0x13
	124	#define CPACF_PCKMO_ENC_AES_256_KEY 0x14
	125
c7d4d259 MS	126	/*
c7d4d259 MS	127	* Function codes for the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION)
edc63a37	128	* instruction
c7d4d259 MS	129	*/
	130	#define CPACF_PPNO_QUERY 0x00
	131	#define CPACF_PPNO_SHA512_DRNG_GEN 0x03
	132	#define CPACF_PPNO_SHA512_DRNG_SEED 0x83
	133
69c0e360 MS	134	typedef struct { unsigned char bytes[16]; } cpacf_mask_t;
69c0e360 MS	135
c7d4d259 MS	136	/**
	137	* cpacf_query() - check if a specific CPACF function is available
	138	* @opcode: the opcode of the crypto instruction
	139	* @func: the function code to test for
	140	*
	141	* Executes the query function for the given crypto instruction @opcode
	142	* and checks if @func is available
	143	*
	144	* Returns 1 if @func is available for @opcode, 0 otherwise
	145	*/
69c0e360	146	static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
c7d4d259	147	{
c7d4d259	148	register unsigned long r0 asm("0") = 0; /* query function */
69c0e360	149	register unsigned long r1 asm("1") = (unsigned long) mask;
c7d4d259 MS	150
c7d4d259 MS	151	asm volatile(
1afd43e0	152	" spm 0\n" /* pckmo doesn't change the cc */
b112a2df JH	153	/* Parameter regs are ignored, but must be nonzero and unique */
b112a2df JH	154	"0: .insn rrf,%[opc] << 16,2,4,6,0\n"
c7d4d259	155	" brc 1,0b\n" /* handle partial completion */
69c0e360	156	: "=m" (*mask)
c7d4d259 MS	157	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode)
	158	: "cc");
	159	}
	160
69c0e360	161	static inline int __cpacf_check_opcode(unsigned int opcode)
c7d4d259	162	{
c7d4d259 MS	163	switch (opcode) {
	164	case CPACF_KMAC:
	165	case CPACF_KM:
	166	case CPACF_KMC:
	167	case CPACF_KIMD:
	168	case CPACF_KLMD:
69c0e360	169	return test_facility(17); /* check for MSA */
1afd43e0	170	case CPACF_PCKMO:
69c0e360	171	return test_facility(76); /* check for MSA3 */
1afd43e0 DH	172	case CPACF_KMF:
1afd43e0 DH	173	case CPACF_KMO:
c7d4d259 MS	174	case CPACF_PCC:
c7d4d259 MS	175	case CPACF_KMCTR:
69c0e360	176	return test_facility(77); /* check for MSA4 */
c7d4d259	177	case CPACF_PPNO:
69c0e360	178	return test_facility(57); /* check for MSA5 */
c7d4d259 MS	179	default:
	180	BUG();
	181	}
69c0e360 MS	182	}
	183
	184	static inline int cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
	185	{
	186	if (__cpacf_check_opcode(opcode)) {
	187	__cpacf_query(opcode, mask);
	188	return 1;
	189	}
	190	memset(mask, 0, sizeof(*mask));
	191	return 0;
	192	}
	193
	194	static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func)
	195	{
	196	return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0;
	197	}
	198
	199	static inline int cpacf_query_func(unsigned int opcode, unsigned int func)
	200	{
	201	cpacf_mask_t mask;
	202
	203	if (cpacf_query(opcode, &mask))
	204	return cpacf_test_func(&mask, func);
	205	return 0;
c7d4d259 MS	206	}
	207
	208	/**
	209	* cpacf_km() - executes the KM (CIPHER MESSAGE) instruction
	210	* @func: the function code passed to KM; see CPACF_KM_xxx defines
	211	* @param: address of parameter block; see POP for details on each func
	212	* @dest: address of destination memory area
	213	* @src: address of source memory area
	214	* @src_len: length of src operand in bytes
	215	*
	216	* Returns 0 for the query func, number of processed bytes for
	217	* encryption/decryption funcs
	218	*/
edc63a37	219	static inline int cpacf_km(unsigned long func, void *param,
c7d4d259 MS	220	u8 dest, const u8 src, long src_len)
	221	{
	222	register unsigned long r0 asm("0") = (unsigned long) func;
	223	register unsigned long r1 asm("1") = (unsigned long) param;
	224	register unsigned long r2 asm("2") = (unsigned long) src;
	225	register unsigned long r3 asm("3") = (unsigned long) src_len;
	226	register unsigned long r4 asm("4") = (unsigned long) dest;
	227
	228	asm volatile(
	229	"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
	230	" brc 1,0b\n" /* handle partial completion */
	231	: [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
	232	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KM)
	233	: "cc", "memory");
	234
	235	return src_len - r3;
	236	}
	237
	238	/**
	239	* cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction
	240	* @func: the function code passed to KM; see CPACF_KMC_xxx defines
	241	* @param: address of parameter block; see POP for details on each func
	242	* @dest: address of destination memory area
	243	* @src: address of source memory area
	244	* @src_len: length of src operand in bytes
	245	*
	246	* Returns 0 for the query func, number of processed bytes for
	247	* encryption/decryption funcs
	248	*/
edc63a37	249	static inline int cpacf_kmc(unsigned long func, void *param,
c7d4d259 MS	250	u8 dest, const u8 src, long src_len)
	251	{
	252	register unsigned long r0 asm("0") = (unsigned long) func;
	253	register unsigned long r1 asm("1") = (unsigned long) param;
	254	register unsigned long r2 asm("2") = (unsigned long) src;
	255	register unsigned long r3 asm("3") = (unsigned long) src_len;
	256	register unsigned long r4 asm("4") = (unsigned long) dest;
	257
	258	asm volatile(
	259	"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
	260	" brc 1,0b\n" /* handle partial completion */
	261	: [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
	262	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMC)
	263	: "cc", "memory");
	264
	265	return src_len - r3;
	266	}
	267
	268	/**
	269	* cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
	270	* instruction
	271	* @func: the function code passed to KM; see CPACF_KIMD_xxx defines
	272	* @param: address of parameter block; see POP for details on each func
	273	* @src: address of source memory area
	274	* @src_len: length of src operand in bytes
c7d4d259	275	*/
0177db01 MS	276	static inline void cpacf_kimd(unsigned long func, void *param,
0177db01 MS	277	const u8 *src, long src_len)
c7d4d259 MS	278	{
	279	register unsigned long r0 asm("0") = (unsigned long) func;
	280	register unsigned long r1 asm("1") = (unsigned long) param;
	281	register unsigned long r2 asm("2") = (unsigned long) src;
	282	register unsigned long r3 asm("3") = (unsigned long) src_len;
	283
	284	asm volatile(
	285	"0: .insn rre,%[opc] << 16,0,%[src]\n"
	286	" brc 1,0b\n" /* handle partial completion */
	287	: [src] "+a" (r2), [len] "+d" (r3)
	288	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KIMD)
	289	: "cc", "memory");
c7d4d259 MS	290	}
	291
	292	/**
	293	* cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction
	294	* @func: the function code passed to KM; see CPACF_KLMD_xxx defines
	295	* @param: address of parameter block; see POP for details on each func
	296	* @src: address of source memory area
	297	* @src_len: length of src operand in bytes
c7d4d259	298	*/
0177db01 MS	299	static inline void cpacf_klmd(unsigned long func, void *param,
0177db01 MS	300	const u8 *src, long src_len)
c7d4d259 MS	301	{
	302	register unsigned long r0 asm("0") = (unsigned long) func;
	303	register unsigned long r1 asm("1") = (unsigned long) param;
	304	register unsigned long r2 asm("2") = (unsigned long) src;
	305	register unsigned long r3 asm("3") = (unsigned long) src_len;
	306
	307	asm volatile(
	308	"0: .insn rre,%[opc] << 16,0,%[src]\n"
	309	" brc 1,0b\n" /* handle partial completion */
	310	: [src] "+a" (r2), [len] "+d" (r3)
	311	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KLMD)
	312	: "cc", "memory");
c7d4d259 MS	313	}
	314
	315	/**
	316	* cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
	317	* instruction
	318	* @func: the function code passed to KM; see CPACF_KMAC_xxx defines
	319	* @param: address of parameter block; see POP for details on each func
	320	* @src: address of source memory area
	321	* @src_len: length of src operand in bytes
	322	*
	323	* Returns 0 for the query func, number of processed bytes for digest funcs
	324	*/
edc63a37	325	static inline int cpacf_kmac(unsigned long func, void *param,
c7d4d259 MS	326	const u8 *src, long src_len)
	327	{
	328	register unsigned long r0 asm("0") = (unsigned long) func;
	329	register unsigned long r1 asm("1") = (unsigned long) param;
	330	register unsigned long r2 asm("2") = (unsigned long) src;
	331	register unsigned long r3 asm("3") = (unsigned long) src_len;
	332
	333	asm volatile(
	334	"0: .insn rre,%[opc] << 16,0,%[src]\n"
	335	" brc 1,0b\n" /* handle partial completion */
	336	: [src] "+a" (r2), [len] "+d" (r3)
	337	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMAC)
	338	: "cc", "memory");
	339
	340	return src_len - r3;
	341	}
	342
	343	/**
	344	* cpacf_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction
	345	* @func: the function code passed to KMCTR; see CPACF_KMCTR_xxx defines
	346	* @param: address of parameter block; see POP for details on each func
	347	* @dest: address of destination memory area
	348	* @src: address of source memory area
	349	* @src_len: length of src operand in bytes
	350	* @counter: address of counter value
	351	*
	352	* Returns 0 for the query func, number of processed bytes for
	353	* encryption/decryption funcs
	354	*/
edc63a37	355	static inline int cpacf_kmctr(unsigned long func, void param, u8 dest,
c7d4d259 MS	356	const u8 src, long src_len, u8 counter)
	357	{
	358	register unsigned long r0 asm("0") = (unsigned long) func;
	359	register unsigned long r1 asm("1") = (unsigned long) param;
	360	register unsigned long r2 asm("2") = (unsigned long) src;
	361	register unsigned long r3 asm("3") = (unsigned long) src_len;
	362	register unsigned long r4 asm("4") = (unsigned long) dest;
	363	register unsigned long r6 asm("6") = (unsigned long) counter;
	364
	365	asm volatile(
	366	"0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n"
	367	" brc 1,0b\n" /* handle partial completion */
	368	: [src] "+a" (r2), [len] "+d" (r3),
	369	[dst] "+a" (r4), [ctr] "+a" (r6)
	370	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMCTR)
	371	: "cc", "memory");
	372
	373	return src_len - r3;
	374	}
	375
	376	/**
	377	* cpacf_ppno() - executes the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION)
	378	* instruction
	379	* @func: the function code passed to PPNO; see CPACF_PPNO_xxx defines
	380	* @param: address of parameter block; see POP for details on each func
	381	* @dest: address of destination memory area
	382	* @dest_len: size of destination memory area in bytes
	383	* @seed: address of seed data
	384	* @seed_len: size of seed data in bytes
c7d4d259	385	*/
0177db01 MS	386	static inline void cpacf_ppno(unsigned long func, void *param,
	387	u8 *dest, long dest_len,
	388	const u8 *seed, long seed_len)
c7d4d259 MS	389	{
	390	register unsigned long r0 asm("0") = (unsigned long) func;
	391	register unsigned long r1 asm("1") = (unsigned long) param;
	392	register unsigned long r2 asm("2") = (unsigned long) dest;
	393	register unsigned long r3 asm("3") = (unsigned long) dest_len;
	394	register unsigned long r4 asm("4") = (unsigned long) seed;
	395	register unsigned long r5 asm("5") = (unsigned long) seed_len;
	396
	397	asm volatile (
	398	"0: .insn rre,%[opc] << 16,%[dst],%[seed]\n"
	399	" brc 1,0b\n" /* handle partial completion */
	400	: [dst] "+a" (r2), [dlen] "+d" (r3)
	401	: [fc] "d" (r0), [pba] "a" (r1),
	402	[seed] "a" (r4), [slen] "d" (r5), [opc] "i" (CPACF_PPNO)
	403	: "cc", "memory");
c7d4d259 MS	404	}
	405
	406	/**
	407	* cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION)
	408	* instruction
	409	* @func: the function code passed to PCC; see CPACF_KM_xxx defines
	410	* @param: address of parameter block; see POP for details on each func
c7d4d259	411	*/
0177db01	412	static inline void cpacf_pcc(unsigned long func, void *param)
c7d4d259 MS	413	{
	414	register unsigned long r0 asm("0") = (unsigned long) func;
	415	register unsigned long r1 asm("1") = (unsigned long) param;
	416
	417	asm volatile(
	418	"0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */
	419	" brc 1,0b\n" /* handle partial completion */
	420	:
	421	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCC)
	422	: "cc", "memory");
c7d4d259 MS	423	}
c7d4d259 MS	424
77606708 HF	425	/**
	426	* cpacf_pckmo() - executes the PCKMO (PERFORM CRYPTOGRAPHIC KEY
	427	* MANAGEMENT) instruction
	428	* @func: the function code passed to PCKMO; see CPACF_PCKMO_xxx defines
	429	* @param: address of parameter block; see POP for details on each func
	430	*
	431	* Returns 0.
	432	*/
	433	static inline void cpacf_pckmo(long func, void *param)
	434	{
	435	register unsigned long r0 asm("0") = (unsigned long) func;
	436	register unsigned long r1 asm("1") = (unsigned long) param;
	437
	438	asm volatile(
	439	" .insn rre,%[opc] << 16,0,0\n" /* PCKMO opcode */
	440	:
	441	: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCKMO)
	442	: "cc", "memory");
	443	}
	444
c7d4d259	445	#endif /* _ASM_S390_CPACF_H */