1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Glue code for SHA-256 implementation for SPE instructions (PPC)
56 	do { *ptr++ = 0; } while (--count);  in ppc_sha256_clear_context()
63 	sctx->state[0] = SHA256_H0;  in ppc_spe_sha256_init()
64 	sctx->state[1] = SHA256_H1;  in ppc_spe_sha256_init()
65 	sctx->state[2] = SHA256_H2;  in ppc_spe_sha256_init()
66 	sctx->state[3] = SHA256_H3;  in ppc_spe_sha256_init()
67 	sctx->state[4] = SHA256_H4;  in ppc_spe_sha256_init()
68 	sctx->state[5] = SHA256_H5;  in ppc_spe_sha256_init()
69 	sctx->state[6] = SHA256_H6;  in ppc_spe_sha256_init()
70 	sctx->state[7] = SHA256_H7;  in ppc_spe_sha256_init()
71 	sctx->count = 0;  in ppc_spe_sha256_init()
80 	sctx->state[0] = SHA224_H0;  in ppc_spe_sha224_init()
81 	sctx->state[1] = SHA224_H1;  in ppc_spe_sha224_init()
82 	sctx->state[2] = SHA224_H2;  in ppc_spe_sha224_init()
83 	sctx->state[3] = SHA224_H3;  in ppc_spe_sha224_init()
84 	sctx->state[4] = SHA224_H4;  in ppc_spe_sha224_init()
85 	sctx->state[5] = SHA224_H5;  in ppc_spe_sha224_init()
86 	sctx->state[6] = SHA224_H6;  in ppc_spe_sha224_init()
87 	sctx->state[7] = SHA224_H7;  in ppc_spe_sha224_init()
88 	sctx->count = 0;  in ppc_spe_sha224_init()
97 	const unsigned int offset = sctx->count & 0x3f;  in ppc_spe_sha256_update()
98 	const unsigned int avail = 64 - offset;  in ppc_spe_sha256_update()
103 		sctx->count += len;  in ppc_spe_sha256_update()
104 		memcpy((char *)sctx->buf + offset, src, len);  in ppc_spe_sha256_update()
108 	sctx->count += len;  in ppc_spe_sha256_update()
111 		memcpy((char *)sctx->buf + offset, src, avail);  in ppc_spe_sha256_update()
114 		ppc_spe_sha256_transform(sctx->state, (const u8 *)sctx->buf, 1);  in ppc_spe_sha256_update()
117 		len -= avail;  in ppc_spe_sha256_update()
127 		ppc_spe_sha256_transform(sctx->state, src, bytes >> 6);  in ppc_spe_sha256_update()
131 		len -= bytes;  in ppc_spe_sha256_update()
134 	memcpy((char *)sctx->buf, src, len);  in ppc_spe_sha256_update()
141 	const unsigned int offset = sctx->count & 0x3f;  in ppc_spe_sha256_final()
142 	char *p = (char *)sctx->buf + offset;  in ppc_spe_sha256_final()
144 	__be64 *pbits = (__be64 *)(((char *)&sctx->buf) + 56);  in ppc_spe_sha256_final()
147 	padlen = 55 - offset;  in ppc_spe_sha256_final()
154 		ppc_spe_sha256_transform(sctx->state, sctx->buf, 1);  in ppc_spe_sha256_final()
155 		p = (char *)sctx->buf;  in ppc_spe_sha256_final()
160 	*pbits = cpu_to_be64(sctx->count << 3);  in ppc_spe_sha256_final()
161 	ppc_spe_sha256_transform(sctx->state, sctx->buf, 1);  in ppc_spe_sha256_final()
165 	dst[0] = cpu_to_be32(sctx->state[0]);  in ppc_spe_sha256_final()
166 	dst[1] = cpu_to_be32(sctx->state[1]);  in ppc_spe_sha256_final()
167 	dst[2] = cpu_to_be32(sctx->state[2]);  in ppc_spe_sha256_final()
168 	dst[3] = cpu_to_be32(sctx->state[3]);  in ppc_spe_sha256_final()
169 	dst[4] = cpu_to_be32(sctx->state[4]);  in ppc_spe_sha256_final()
170 	dst[5] = cpu_to_be32(sctx->state[5]);  in ppc_spe_sha256_final()
171 	dst[6] = cpu_to_be32(sctx->state[6]);  in ppc_spe_sha256_final()
172 	dst[7] = cpu_to_be32(sctx->state[7]);  in ppc_spe_sha256_final()
226 		.cra_driver_name=	"sha256-ppc-spe",
242 		.cra_driver_name=	"sha224-ppc-spe",
263 MODULE_DESCRIPTION("SHA-224 and SHA-256 Secure Hash Algorithm, SPE optimized");
266 MODULE_ALIAS_CRYPTO("sha224-ppc-spe");
268 MODULE_ALIAS_CRYPTO("sha256-ppc-spe");