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diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h
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+++ b/arch/s390/include/asm/cpacf.h
@@ -0,0 +1,551 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * CP Assist for Cryptographic Functions (CPACF)
+ *
+ * Copyright IBM Corp. 2003, 2023
+ * 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 */
+#define CPACF_KDSA 0xb93a /* MSA9 */
+
+/*
+ * 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_SHA3_224 0x20
+#define CPACF_KIMD_SHA3_256 0x21
+#define CPACF_KIMD_SHA3_384 0x22
+#define CPACF_KIMD_SHA3_512 0x23
+#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
+#define CPACF_KLMD_SHA3_224 0x20
+#define CPACF_KLMD_SHA3_256 0x21
+#define CPACF_KLMD_SHA3_384 0x22
+#define CPACF_KLMD_SHA3_512 0x23
+
+/*
+ * 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
+#define CPACF_PCKMO_ENC_ECC_P256_KEY 0x20
+#define CPACF_PCKMO_ENC_ECC_P384_KEY 0x21
+#define CPACF_PCKMO_ENC_ECC_P521_KEY 0x22
+#define CPACF_PCKMO_ENC_ECC_ED25519_KEY 0x28
+#define CPACF_PCKMO_ENC_ECC_ED448_KEY 0x29
+
+/*
+ * 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
+
+/*
+ * Function codes for the KMA (CIPHER MESSAGE WITH AUTHENTICATION)
+ * instruction
+ */
+#define CPACF_KMA_QUERY 0x00
+#define CPACF_KMA_GCM_AES_128 0x12
+#define CPACF_KMA_GCM_AES_192 0x13
+#define CPACF_KMA_GCM_AES_256 0x14
+
+/*
+ * Flags for the KMA (CIPHER MESSAGE WITH AUTHENTICATION) instruction
+ */
+#define CPACF_KMA_LPC 0x100 /* Last-Plaintext/Ciphertext */
+#define CPACF_KMA_LAAD 0x200 /* Last-AAD */
+#define CPACF_KMA_HS 0x400 /* Hash-subkey Supplied */
+
+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 __always_inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
+{
+ asm volatile(
+ " lghi 0,0\n" /* query function */
+ " lgr 1,%[mask]\n"
+ " 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)
+ : [mask] "d" ((unsigned long)mask), [opc] "i" (opcode)
+ : "cc", "0", "1");
+}
+
+static __always_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 */
+ case CPACF_KMA:
+ return test_facility(146); /* check for MSA8 */
+ default:
+ BUG();
+ }
+}
+
+static __always_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 __always_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)
+{
+ union register_pair d, s;
+
+ d.even = (unsigned long)dest;
+ s.even = (unsigned long)src;
+ s.odd = (unsigned long)src_len;
+ asm volatile(
+ " lgr 0,%[fc]\n"
+ " lgr 1,%[pba]\n"
+ "0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
+ " brc 1,0b\n" /* handle partial completion */
+ : [src] "+&d" (s.pair), [dst] "+&d" (d.pair)
+ : [fc] "d" (func), [pba] "d" ((unsigned long)param),
+ [opc] "i" (CPACF_KM)
+ : "cc", "memory", "0", "1");
+
+ return src_len - s.odd;
+}
+
+/**
+ * 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)
+{
+ union register_pair d, s;
+
+ d.even = (unsigned long)dest;
+ s.even = (unsigned long)src;
+ s.odd = (unsigned long)src_len;
+ asm volatile(
+ " lgr 0,%[fc]\n"
+ " lgr 1,%[pba]\n"
+ "0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
+ " brc 1,0b\n" /* handle partial completion */
+ : [src] "+&d" (s.pair), [dst] "+&d" (d.pair)
+ : [fc] "d" (func), [pba] "d" ((unsigned long)param),
+ [opc] "i" (CPACF_KMC)
+ : "cc", "memory", "0", "1");
+
+ return src_len - s.odd;
+}
+
+/**
+ * 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)
+{
+ union register_pair s;
+
+ s.even = (unsigned long)src;
+ s.odd = (unsigned long)src_len;
+ asm volatile(
+ " lgr 0,%[fc]\n"
+ " lgr 1,%[pba]\n"
+ "0: .insn rre,%[opc] << 16,0,%[src]\n"
+ " brc 1,0b\n" /* handle partial completion */
+ : [src] "+&d" (s.pair)
+ : [fc] "d" (func), [pba] "d" ((unsigned long)(param)),
+ [opc] "i" (CPACF_KIMD)
+ : "cc", "memory", "0", "1");
+}
+
+/**
+ * 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)
+{
+ union register_pair s;
+
+ s.even = (unsigned long)src;
+ s.odd = (unsigned long)src_len;
+ asm volatile(
+ " lgr 0,%[fc]\n"
+ " lgr 1,%[pba]\n"
+ "0: .insn rre,%[opc] << 16,0,%[src]\n"
+ " brc 1,0b\n" /* handle partial completion */
+ : [src] "+&d" (s.pair)
+ : [fc] "d" (func), [pba] "d" ((unsigned long)param),
+ [opc] "i" (CPACF_KLMD)
+ : "cc", "memory", "0", "1");
+}
+
+/**
+ * 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)
+{
+ union register_pair s;
+
+ s.even = (unsigned long)src;
+ s.odd = (unsigned long)src_len;
+ asm volatile(
+ " lgr 0,%[fc]\n"
+ " lgr 1,%[pba]\n"
+ "0: .insn rre,%[opc] << 16,0,%[src]\n"
+ " brc 1,0b\n" /* handle partial completion */
+ : [src] "+&d" (s.pair)
+ : [fc] "d" (func), [pba] "d" ((unsigned long)param),
+ [opc] "i" (CPACF_KMAC)
+ : "cc", "memory", "0", "1");
+
+ return src_len - s.odd;
+}
+
+/**
+ * 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)
+{
+ union register_pair d, s, c;
+
+ d.even = (unsigned long)dest;
+ s.even = (unsigned long)src;
+ s.odd = (unsigned long)src_len;
+ c.even = (unsigned long)counter;
+ asm volatile(
+ " lgr 0,%[fc]\n"
+ " lgr 1,%[pba]\n"
+ "0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n"
+ " brc 1,0b\n" /* handle partial completion */
+ : [src] "+&d" (s.pair), [dst] "+&d" (d.pair),
+ [ctr] "+&d" (c.pair)
+ : [fc] "d" (func), [pba] "d" ((unsigned long)param),
+ [opc] "i" (CPACF_KMCTR)
+ : "cc", "memory", "0", "1");
+
+ return src_len - s.odd;
+}
+
+/**
+ * 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)
+{
+ union register_pair d, s;
+
+ d.even = (unsigned long)dest;
+ d.odd = (unsigned long)dest_len;
+ s.even = (unsigned long)seed;
+ s.odd = (unsigned long)seed_len;
+ asm volatile (
+ " lgr 0,%[fc]\n"
+ " lgr 1,%[pba]\n"
+ "0: .insn rre,%[opc] << 16,%[dst],%[seed]\n"
+ " brc 1,0b\n" /* handle partial completion */
+ : [dst] "+&d" (d.pair)
+ : [fc] "d" (func), [pba] "d" ((unsigned long)param),
+ [seed] "d" (s.pair), [opc] "i" (CPACF_PRNO)
+ : "cc", "memory", "0", "1");
+}
+
+/**
+ * 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)
+{
+ union register_pair u, c;
+
+ u.even = (unsigned long)ucbuf;
+ u.odd = (unsigned long)ucbuf_len;
+ c.even = (unsigned long)cbuf;
+ c.odd = (unsigned long)cbuf_len;
+ asm volatile (
+ " lghi 0,%[fc]\n"
+ "0: .insn rre,%[opc] << 16,%[ucbuf],%[cbuf]\n"
+ " brc 1,0b\n" /* handle partial completion */
+ : [ucbuf] "+&d" (u.pair), [cbuf] "+&d" (c.pair)
+ : [fc] "K" (CPACF_PRNO_TRNG), [opc] "i" (CPACF_PRNO)
+ : "cc", "memory", "0");
+}
+
+/**
+ * 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)
+{
+ asm volatile(
+ " lgr 0,%[fc]\n"
+ " lgr 1,%[pba]\n"
+ "0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */
+ " brc 1,0b\n" /* handle partial completion */
+ :
+ : [fc] "d" (func), [pba] "d" ((unsigned long)param),
+ [opc] "i" (CPACF_PCC)
+ : "cc", "memory", "0", "1");
+}
+
+/**
+ * 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)
+{
+ asm volatile(
+ " lgr 0,%[fc]\n"
+ " lgr 1,%[pba]\n"
+ " .insn rre,%[opc] << 16,0,0\n" /* PCKMO opcode */
+ :
+ : [fc] "d" (func), [pba] "d" ((unsigned long)param),
+ [opc] "i" (CPACF_PCKMO)
+ : "cc", "memory", "0", "1");
+}
+
+/**
+ * cpacf_kma() - executes the KMA (CIPHER MESSAGE WITH AUTHENTICATION)
+ * instruction
+ * @func: the function code passed to KMA; see CPACF_KMA_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
+ * @aad: address of additional authenticated data memory area
+ * @aad_len: length of aad operand in bytes
+ */
+static inline void cpacf_kma(unsigned long func, void *param, u8 *dest,
+ const u8 *src, unsigned long src_len,
+ const u8 *aad, unsigned long aad_len)
+{
+ union register_pair d, s, a;
+
+ d.even = (unsigned long)dest;
+ s.even = (unsigned long)src;
+ s.odd = (unsigned long)src_len;
+ a.even = (unsigned long)aad;
+ a.odd = (unsigned long)aad_len;
+ asm volatile(
+ " lgr 0,%[fc]\n"
+ " lgr 1,%[pba]\n"
+ "0: .insn rrf,%[opc] << 16,%[dst],%[src],%[aad],0\n"
+ " brc 1,0b\n" /* handle partial completion */
+ : [dst] "+&d" (d.pair), [src] "+&d" (s.pair),
+ [aad] "+&d" (a.pair)
+ : [fc] "d" (func), [pba] "d" ((unsigned long)param),
+ [opc] "i" (CPACF_KMA)
+ : "cc", "memory", "0", "1");
+}
+
+#endif /* _ASM_S390_CPACF_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 11:15:33 +0000