1 files changed, 0 insertions, 160 deletions

diff --git a/arch/powerpc/crypto/ghash.c b/arch/powerpc/crypto/ghash.c
deleted file mode 100644
index 7308735bdb33..000000000000
--- a/arch/powerpc/crypto/ghash.c
+++ /dev/null
@@ -1,160 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * GHASH routines supporting VMX instructions on the Power 8
- *
- * Copyright (C) 2015, 2019 International Business Machines Inc.
- *
- * Author: Marcelo Henrique Cerri <mhcerri@br.ibm.com>
- *
- * Extended by Daniel Axtens <dja@axtens.net> to replace the fallback
- * mechanism. The new approach is based on arm64 code, which is:
- *   Copyright (C) 2014 - 2018 Linaro Ltd. <ard.biesheuvel@linaro.org>
- */
-
-#include "aesp8-ppc.h"
-#include <asm/switch_to.h>
-#include <crypto/aes.h>
-#include <crypto/gf128mul.h>
-#include <crypto/ghash.h>
-#include <crypto/internal/hash.h>
-#include <crypto/internal/simd.h>
-#include <linux/err.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/uaccess.h>
-
-void gcm_init_p8(u128 htable[16], const u64 Xi[2]);
-void gcm_gmult_p8(u64 Xi[2], const u128 htable[16]);
-void gcm_ghash_p8(u64 Xi[2], const u128 htable[16],
-		  const u8 *in, size_t len);
-
-struct p8_ghash_ctx {
-	/* key used by vector asm */
-	u128 htable[16];
-	/* key used by software fallback */
-	be128 key;
-};
-
-struct p8_ghash_desc_ctx {
-	u64 shash[2];
-};
-
-static int p8_ghash_init(struct shash_desc *desc)
-{
-	struct p8_ghash_desc_ctx *dctx = shash_desc_ctx(desc);
-
-	memset(dctx->shash, 0, GHASH_DIGEST_SIZE);
-	return 0;
-}
-
-static int p8_ghash_setkey(struct crypto_shash *tfm, const u8 *key,
-			   unsigned int keylen)
-{
-	struct p8_ghash_ctx *ctx = crypto_tfm_ctx(crypto_shash_tfm(tfm));
-
-	if (keylen != GHASH_BLOCK_SIZE)
-		return -EINVAL;
-
-	preempt_disable();
-	pagefault_disable();
-	enable_kernel_vsx();
-	gcm_init_p8(ctx->htable, (const u64 *) key);
-	disable_kernel_vsx();
-	pagefault_enable();
-	preempt_enable();
-
-	memcpy(&ctx->key, key, GHASH_BLOCK_SIZE);
-
-	return 0;
-}
-
-static inline void __ghash_block(struct p8_ghash_ctx *ctx,
-				 struct p8_ghash_desc_ctx *dctx,
-				 const u8 *src)
-{
-	if (crypto_simd_usable()) {
-		preempt_disable();
-		pagefault_disable();
-		enable_kernel_vsx();
-		gcm_ghash_p8(dctx->shash, ctx->htable, src, GHASH_BLOCK_SIZE);
-		disable_kernel_vsx();
-		pagefault_enable();
-		preempt_enable();
-	} else {
-		crypto_xor((u8 *)dctx->shash, src, GHASH_BLOCK_SIZE);
-		gf128mul_lle((be128 *)dctx->shash, &ctx->key);
-	}
-}
-
-static inline int __ghash_blocks(struct p8_ghash_ctx *ctx,
-				 struct p8_ghash_desc_ctx *dctx,
-				 const u8 *src, unsigned int srclen)
-{
-	int remain = srclen - round_down(srclen, GHASH_BLOCK_SIZE);
-
-	srclen -= remain;
-	if (crypto_simd_usable()) {
-		preempt_disable();
-		pagefault_disable();
-		enable_kernel_vsx();
-		gcm_ghash_p8(dctx->shash, ctx->htable,
-				src, srclen);
-		disable_kernel_vsx();
-		pagefault_enable();
-		preempt_enable();
-	} else {
-		do {
-			crypto_xor((u8 *)dctx->shash, src, GHASH_BLOCK_SIZE);
-			gf128mul_lle((be128 *)dctx->shash, &ctx->key);
-			srclen -= GHASH_BLOCK_SIZE;
-			src += GHASH_BLOCK_SIZE;
-		} while (srclen);
-	}
-
-	return remain;
-}
-
-static int p8_ghash_update(struct shash_desc *desc,
-			   const u8 *src, unsigned int srclen)
-{
-	struct p8_ghash_ctx *ctx = crypto_tfm_ctx(crypto_shash_tfm(desc->tfm));
-	struct p8_ghash_desc_ctx *dctx = shash_desc_ctx(desc);
-
-	return __ghash_blocks(ctx, dctx, src, srclen);
-}
-
-static int p8_ghash_finup(struct shash_desc *desc, const u8 *src,
-			  unsigned int len, u8 *out)
-{
-	struct p8_ghash_ctx *ctx = crypto_tfm_ctx(crypto_shash_tfm(desc->tfm));
-	struct p8_ghash_desc_ctx *dctx = shash_desc_ctx(desc);
-
-	if (len) {
-		u8 buf[GHASH_BLOCK_SIZE] = {};
-
-		memcpy(buf, src, len);
-		__ghash_block(ctx, dctx, buf);
-		memzero_explicit(buf, sizeof(buf));
-	}
-	memcpy(out, dctx->shash, GHASH_DIGEST_SIZE);
-	return 0;
-}
-
-struct shash_alg p8_ghash_alg = {
-	.digestsize = GHASH_DIGEST_SIZE,
-	.init = p8_ghash_init,
-	.update = p8_ghash_update,
-	.finup = p8_ghash_finup,
-	.setkey = p8_ghash_setkey,
-	.descsize = sizeof(struct p8_ghash_desc_ctx),
-	.base = {
-		 .cra_name = "ghash",
-		 .cra_driver_name = "p8_ghash",
-		 .cra_priority = 1000,
-		 .cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY,
-		 .cra_blocksize = GHASH_BLOCK_SIZE,
-		 .cra_ctxsize = sizeof(struct p8_ghash_ctx),
-		 .cra_module = THIS_MODULE,
-	},
-};