1 files changed, 0 insertions, 107 deletions
diff --git a/arch/powerpc/crypto/sha1-spe-glue.c b/arch/powerpc/crypto/sha1-spe-glue.c
deleted file mode 100644
index 04c88e173ce1..000000000000
--- a/arch/powerpc/crypto/sha1-spe-glue.c
+++ /dev/null
@@ -1,107 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Glue code for SHA-1 implementation for SPE instructions (PPC)
- *
- * Based on generic implementation.
- *
- * Copyright (c) 2015 Markus Stockhausen <stockhausen@collogia.de>
- */
-
-#include <asm/switch_to.h>
-#include <crypto/internal/hash.h>
-#include <crypto/sha1.h>
-#include <crypto/sha1_base.h>
-#include <linux/kernel.h>
-#include <linux/preempt.h>
-#include <linux/module.h>
-
-/*
- * MAX_BYTES defines the number of bytes that are allowed to be processed
- * between preempt_disable() and preempt_enable(). SHA1 takes ~1000
- * operations per 64 bytes. e500 cores can issue two arithmetic instructions
- * per clock cycle using one 32/64 bit unit (SU1) and one 32 bit unit (SU2).
- * Thus 2KB of input data will need an estimated maximum of 18,000 cycles.
- * Headroom for cache misses included. Even with the low end model clocked
- * at 667 MHz this equals to a critical time window of less than 27us.
- *
- */
-#define MAX_BYTES 2048
-
-asmlinkage void ppc_spe_sha1_transform(u32 *state, const u8 *src, u32 blocks);
-
-static void spe_begin(void)
-{
-	/* We just start SPE operations and will save SPE registers later. */
-	preempt_disable();
-	enable_kernel_spe();
-}
-
-static void spe_end(void)
-{
-	disable_kernel_spe();
-	/* reenable preemption */
-	preempt_enable();
-}
-
-static void ppc_spe_sha1_block(struct sha1_state *sctx, const u8 *src,
-			       int blocks)
-{
-	do {
-		int unit = min(blocks, MAX_BYTES / SHA1_BLOCK_SIZE);
-
-		spe_begin();
-		ppc_spe_sha1_transform(sctx->state, src, unit);
-		spe_end();
-
-		src += unit * SHA1_BLOCK_SIZE;
-		blocks -= unit;
-	} while (blocks);
-}
-
-static int ppc_spe_sha1_update(struct shash_desc *desc, const u8 *data,
-			unsigned int len)
-{
-	return sha1_base_do_update_blocks(desc, data, len, ppc_spe_sha1_block);
-}
-
-static int ppc_spe_sha1_finup(struct shash_desc *desc, const u8 *src,
-			      unsigned int len, u8 *out)
-{
-	sha1_base_do_finup(desc, src, len, ppc_spe_sha1_block);
-	return sha1_base_finish(desc, out);
-}
-
-static struct shash_alg alg = {
-	.digestsize	=	SHA1_DIGEST_SIZE,
-	.init		=	sha1_base_init,
-	.update		=	ppc_spe_sha1_update,
-	.finup		=	ppc_spe_sha1_finup,
-	.descsize	=	SHA1_STATE_SIZE,
-	.base		=	{
-		.cra_name	=	"sha1",
-		.cra_driver_name=	"sha1-ppc-spe",
-		.cra_priority	=	300,
-		.cra_flags	=	CRYPTO_AHASH_ALG_BLOCK_ONLY,
-		.cra_blocksize	=	SHA1_BLOCK_SIZE,
-		.cra_module	=	THIS_MODULE,
-	}
-};
-
-static int __init ppc_spe_sha1_mod_init(void)
-{
-	return crypto_register_shash(&alg);
-}
-
-static void __exit ppc_spe_sha1_mod_fini(void)
-{
-	crypto_unregister_shash(&alg);
-}
-
-module_init(ppc_spe_sha1_mod_init);
-module_exit(ppc_spe_sha1_mod_fini);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm, SPE optimized");
-
-MODULE_ALIAS_CRYPTO("sha1");
-MODULE_ALIAS_CRYPTO("sha1-ppc-spe");