crypto: x86 - remove glue helper module

All dependencies on the x86 glue helper module have been replaced by
local instantiations of the new ECB/CBC preprocessor helper macros, so
the glue helper module can be retired.

Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 0 insertions, 74 deletions

diff --git a/arch/x86/include/asm/crypto/glue_helper.h b/arch/x86/include/asm/crypto/glue_helper.h
deleted file mode 100644
index 23e09efd2aa61..0000000000000
--- a/arch/x86/include/asm/crypto/glue_helper.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Shared glue code for 128bit block ciphers
- */
-
-#ifndef _CRYPTO_GLUE_HELPER_H
-#define _CRYPTO_GLUE_HELPER_H
-
-#include <crypto/internal/skcipher.h>
-#include <linux/kernel.h>
-#include <asm/fpu/api.h>
-
-typedef void (*common_glue_func_t)(const void *ctx, u8 *dst, const u8 *src);
-typedef void (*common_glue_cbc_func_t)(const void *ctx, u8 *dst, const u8 *src);
-
-struct common_glue_func_entry {
-	unsigned int num_blocks; /* number of blocks that @fn will process */
-	union {
-		common_glue_func_t ecb;
-		common_glue_cbc_func_t cbc;
-	} fn_u;
-};
-
-struct common_glue_ctx {
-	unsigned int num_funcs;
-	int fpu_blocks_limit; /* -1 means fpu not needed at all */
-
-	/*
-	 * First funcs entry must have largest num_blocks and last funcs entry
-	 * must have num_blocks == 1!
-	 */
-	struct common_glue_func_entry funcs[];
-};
-
-static inline bool glue_fpu_begin(unsigned int bsize, int fpu_blocks_limit,
-				  struct skcipher_walk *walk,
-				  bool fpu_enabled, unsigned int nbytes)
-{
-	if (likely(fpu_blocks_limit < 0))
-		return false;
-
-	if (fpu_enabled)
-		return true;
-
-	/*
-	 * Vector-registers are only used when chunk to be processed is large
-	 * enough, so do not enable FPU until it is necessary.
-	 */
-	if (nbytes < bsize * (unsigned int)fpu_blocks_limit)
-		return false;
-
-	/* prevent sleeping if FPU is in use */
-	skcipher_walk_atomise(walk);
-
-	kernel_fpu_begin();
-	return true;
-}
-
-static inline void glue_fpu_end(bool fpu_enabled)
-{
-	if (fpu_enabled)
-		kernel_fpu_end();
-}
-
-extern int glue_ecb_req_128bit(const struct common_glue_ctx *gctx,
-			       struct skcipher_request *req);
-
-extern int glue_cbc_encrypt_req_128bit(const common_glue_func_t fn,
-				       struct skcipher_request *req);
-
-extern int glue_cbc_decrypt_req_128bit(const struct common_glue_ctx *gctx,
-				       struct skcipher_request *req);
-
-#endif /* _CRYPTO_GLUE_HELPER_H */