1 files changed, 0 insertions, 101 deletions
diff --git a/arch/riscv/crypto/chacha-riscv64-glue.c b/arch/riscv/crypto/chacha-riscv64-glue.c
deleted file mode 100644
index 10b46f36375a..000000000000
--- a/arch/riscv/crypto/chacha-riscv64-glue.c
+++ /dev/null
@@ -1,101 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * ChaCha20 using the RISC-V vector crypto extensions
- *
- * Copyright (C) 2023 SiFive, Inc.
- * Author: Jerry Shih <jerry.shih@sifive.com>
- */
-
-#include <asm/simd.h>
-#include <asm/vector.h>
-#include <crypto/internal/chacha.h>
-#include <crypto/internal/skcipher.h>
-#include <linux/linkage.h>
-#include <linux/module.h>
-
-asmlinkage void chacha20_zvkb(const u32 key[8], const u8 *in, u8 *out,
-			      size_t len, const u32 iv[4]);
-
-static int riscv64_chacha20_crypt(struct skcipher_request *req)
-{
-	u32 iv[CHACHA_IV_SIZE / sizeof(u32)];
-	u8 block_buffer[CHACHA_BLOCK_SIZE];
-	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
-	const struct chacha_ctx *ctx = crypto_skcipher_ctx(tfm);
-	struct skcipher_walk walk;
-	unsigned int nbytes;
-	unsigned int tail_bytes;
-	int err;
-
-	iv[0] = get_unaligned_le32(req->iv);
-	iv[1] = get_unaligned_le32(req->iv + 4);
-	iv[2] = get_unaligned_le32(req->iv + 8);
-	iv[3] = get_unaligned_le32(req->iv + 12);
-
-	err = skcipher_walk_virt(&walk, req, false);
-	while (walk.nbytes) {
-		nbytes = walk.nbytes & ~(CHACHA_BLOCK_SIZE - 1);
-		tail_bytes = walk.nbytes & (CHACHA_BLOCK_SIZE - 1);
-		kernel_vector_begin();
-		if (nbytes) {
-			chacha20_zvkb(ctx->key, walk.src.virt.addr,
-				      walk.dst.virt.addr, nbytes, iv);
-			iv[0] += nbytes / CHACHA_BLOCK_SIZE;
-		}
-		if (walk.nbytes == walk.total && tail_bytes > 0) {
-			memcpy(block_buffer, walk.src.virt.addr + nbytes,
-			       tail_bytes);
-			chacha20_zvkb(ctx->key, block_buffer, block_buffer,
-				      CHACHA_BLOCK_SIZE, iv);
-			memcpy(walk.dst.virt.addr + nbytes, block_buffer,
-			       tail_bytes);
-			tail_bytes = 0;
-		}
-		kernel_vector_end();
-
-		err = skcipher_walk_done(&walk, tail_bytes);
-	}
-
-	return err;
-}
-
-static struct skcipher_alg riscv64_chacha_alg = {
-	.setkey = chacha20_setkey,
-	.encrypt = riscv64_chacha20_crypt,
-	.decrypt = riscv64_chacha20_crypt,
-	.min_keysize = CHACHA_KEY_SIZE,
-	.max_keysize = CHACHA_KEY_SIZE,
-	.ivsize = CHACHA_IV_SIZE,
-	.chunksize = CHACHA_BLOCK_SIZE,
-	.walksize = 4 * CHACHA_BLOCK_SIZE,
-	.base = {
-		.cra_blocksize = 1,
-		.cra_ctxsize = sizeof(struct chacha_ctx),
-		.cra_priority = 300,
-		.cra_name = "chacha20",
-		.cra_driver_name = "chacha20-riscv64-zvkb",
-		.cra_module = THIS_MODULE,
-	},
-};
-
-static int __init riscv64_chacha_mod_init(void)
-{
-	if (riscv_isa_extension_available(NULL, ZVKB) &&
-	    riscv_vector_vlen() >= 128)
-		return crypto_register_skcipher(&riscv64_chacha_alg);
-
-	return -ENODEV;
-}
-
-static void __exit riscv64_chacha_mod_exit(void)
-{
-	crypto_unregister_skcipher(&riscv64_chacha_alg);
-}
-
-module_init(riscv64_chacha_mod_init);
-module_exit(riscv64_chacha_mod_exit);
-
-MODULE_DESCRIPTION("ChaCha20 (RISC-V accelerated)");
-MODULE_AUTHOR("Jerry Shih <jerry.shih@sifive.com>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_CRYPTO("chacha20");