Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /* Glue code for CAMELLIA encryption optimized for sparc64 crypto opcodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright (C) 2012 David S. Miller <davem@davemloft.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/crypto.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <crypto/algapi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <crypto/internal/skcipher.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <asm/fpumacro.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <asm/pstate.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <asm/elf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include "opcodes.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define CAMELLIA_MIN_KEY_SIZE        16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define CAMELLIA_MAX_KEY_SIZE        32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define CAMELLIA_BLOCK_SIZE          16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define CAMELLIA_TABLE_BYTE_LEN     272
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) struct camellia_sparc64_ctx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	u64 encrypt_key[CAMELLIA_TABLE_BYTE_LEN / sizeof(u64)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	u64 decrypt_key[CAMELLIA_TABLE_BYTE_LEN / sizeof(u64)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	int key_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) extern void camellia_sparc64_key_expand(const u32 *in_key, u64 *encrypt_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 					unsigned int key_len, u64 *decrypt_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) static int camellia_set_key(struct crypto_tfm *tfm, const u8 *_in_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 			    unsigned int key_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	struct camellia_sparc64_ctx *ctx = crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	const u32 *in_key = (const u32 *) _in_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	if (key_len != 16 && key_len != 24 && key_len != 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	ctx->key_len = key_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	camellia_sparc64_key_expand(in_key, &ctx->encrypt_key[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 				    key_len, &ctx->decrypt_key[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) static int camellia_set_key_skcipher(struct crypto_skcipher *tfm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 				     const u8 *in_key, unsigned int key_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	return camellia_set_key(crypto_skcipher_tfm(tfm), in_key, key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) extern void camellia_sparc64_crypt(const u64 *key, const u32 *input,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 				   u32 *output, unsigned int key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) static void camellia_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	struct camellia_sparc64_ctx *ctx = crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	camellia_sparc64_crypt(&ctx->encrypt_key[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 			       (const u32 *) src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 			       (u32 *) dst, ctx->key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) static void camellia_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	struct camellia_sparc64_ctx *ctx = crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	camellia_sparc64_crypt(&ctx->decrypt_key[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 			       (const u32 *) src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 			       (u32 *) dst, ctx->key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) extern void camellia_sparc64_load_keys(const u64 *key, unsigned int key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) typedef void ecb_crypt_op(const u64 *input, u64 *output, unsigned int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 			  const u64 *key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) extern ecb_crypt_op camellia_sparc64_ecb_crypt_3_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) extern ecb_crypt_op camellia_sparc64_ecb_crypt_4_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) static int __ecb_crypt(struct skcipher_request *req, bool encrypt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	const struct camellia_sparc64_ctx *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	struct skcipher_walk walk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	ecb_crypt_op *op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	const u64 *key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	unsigned int nbytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	op = camellia_sparc64_ecb_crypt_3_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	if (ctx->key_len != 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		op = camellia_sparc64_ecb_crypt_4_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	err = skcipher_walk_virt(&walk, req, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	if (encrypt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		key = &ctx->encrypt_key[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		key = &ctx->decrypt_key[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	camellia_sparc64_load_keys(key, ctx->key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	while ((nbytes = walk.nbytes) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		op(walk.src.virt.addr, walk.dst.virt.addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		   round_down(nbytes, CAMELLIA_BLOCK_SIZE), key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		err = skcipher_walk_done(&walk, nbytes % CAMELLIA_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	fprs_write(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static int ecb_encrypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	return __ecb_crypt(req, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static int ecb_decrypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	return __ecb_crypt(req, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) typedef void cbc_crypt_op(const u64 *input, u64 *output, unsigned int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 			  const u64 *key, u64 *iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) extern cbc_crypt_op camellia_sparc64_cbc_encrypt_3_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) extern cbc_crypt_op camellia_sparc64_cbc_encrypt_4_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) extern cbc_crypt_op camellia_sparc64_cbc_decrypt_3_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) extern cbc_crypt_op camellia_sparc64_cbc_decrypt_4_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static int cbc_encrypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	const struct camellia_sparc64_ctx *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	struct skcipher_walk walk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	cbc_crypt_op *op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	const u64 *key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	unsigned int nbytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	op = camellia_sparc64_cbc_encrypt_3_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	if (ctx->key_len != 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		op = camellia_sparc64_cbc_encrypt_4_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	err = skcipher_walk_virt(&walk, req, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	key = &ctx->encrypt_key[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	camellia_sparc64_load_keys(key, ctx->key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	while ((nbytes = walk.nbytes) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		op(walk.src.virt.addr, walk.dst.virt.addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		   round_down(nbytes, CAMELLIA_BLOCK_SIZE), key, walk.iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		err = skcipher_walk_done(&walk, nbytes % CAMELLIA_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	fprs_write(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static int cbc_decrypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	const struct camellia_sparc64_ctx *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	struct skcipher_walk walk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	cbc_crypt_op *op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	const u64 *key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	unsigned int nbytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	op = camellia_sparc64_cbc_decrypt_3_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	if (ctx->key_len != 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		op = camellia_sparc64_cbc_decrypt_4_grand_rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	err = skcipher_walk_virt(&walk, req, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	key = &ctx->decrypt_key[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	camellia_sparc64_load_keys(key, ctx->key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	while ((nbytes = walk.nbytes) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		op(walk.src.virt.addr, walk.dst.virt.addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		   round_down(nbytes, CAMELLIA_BLOCK_SIZE), key, walk.iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		err = skcipher_walk_done(&walk, nbytes % CAMELLIA_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	fprs_write(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) static struct crypto_alg cipher_alg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	.cra_name		= "camellia",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	.cra_driver_name	= "camellia-sparc64",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	.cra_priority		= SPARC_CR_OPCODE_PRIORITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	.cra_flags		= CRYPTO_ALG_TYPE_CIPHER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	.cra_blocksize		= CAMELLIA_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	.cra_ctxsize		= sizeof(struct camellia_sparc64_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	.cra_alignmask		= 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	.cra_module		= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	.cra_u	= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		.cipher	= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 			.cia_min_keysize	= CAMELLIA_MIN_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 			.cia_max_keysize	= CAMELLIA_MAX_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 			.cia_setkey		= camellia_set_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 			.cia_encrypt		= camellia_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 			.cia_decrypt		= camellia_decrypt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) static struct skcipher_alg skcipher_algs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		.base.cra_name		= "ecb(camellia)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		.base.cra_driver_name	= "ecb-camellia-sparc64",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		.base.cra_priority	= SPARC_CR_OPCODE_PRIORITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		.base.cra_blocksize	= CAMELLIA_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		.base.cra_ctxsize	= sizeof(struct camellia_sparc64_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		.base.cra_alignmask	= 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		.base.cra_module	= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		.min_keysize		= CAMELLIA_MIN_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		.max_keysize		= CAMELLIA_MAX_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		.setkey			= camellia_set_key_skcipher,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		.encrypt		= ecb_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		.decrypt		= ecb_decrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	}, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		.base.cra_name		= "cbc(camellia)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		.base.cra_driver_name	= "cbc-camellia-sparc64",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		.base.cra_priority	= SPARC_CR_OPCODE_PRIORITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		.base.cra_blocksize	= CAMELLIA_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		.base.cra_ctxsize	= sizeof(struct camellia_sparc64_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		.base.cra_alignmask	= 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		.base.cra_module	= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		.min_keysize		= CAMELLIA_MIN_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		.max_keysize		= CAMELLIA_MAX_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		.ivsize			= CAMELLIA_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		.setkey			= camellia_set_key_skcipher,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		.encrypt		= cbc_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		.decrypt		= cbc_decrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static bool __init sparc64_has_camellia_opcode(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	unsigned long cfr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	if (!(sparc64_elf_hwcap & HWCAP_SPARC_CRYPTO))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	__asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	if (!(cfr & CFR_CAMELLIA))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static int __init camellia_sparc64_mod_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	if (!sparc64_has_camellia_opcode()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		pr_info("sparc64 camellia opcodes not available.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	pr_info("Using sparc64 camellia opcodes optimized CAMELLIA implementation\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	err = crypto_register_alg(&cipher_alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	err = crypto_register_skciphers(skcipher_algs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 					ARRAY_SIZE(skcipher_algs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		crypto_unregister_alg(&cipher_alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) static void __exit camellia_sparc64_mod_fini(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	crypto_unregister_alg(&cipher_alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	crypto_unregister_skciphers(skcipher_algs, ARRAY_SIZE(skcipher_algs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) module_init(camellia_sparc64_mod_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) module_exit(camellia_sparc64_mod_fini);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) MODULE_DESCRIPTION("Camellia Cipher Algorithm, sparc64 camellia opcode accelerated");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) MODULE_ALIAS_CRYPTO("camellia");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) #include "crop_devid.c"