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818 lines
21 KiB
818 lines
21 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Cipher algorithms supported by the CESA: DES, 3DES and AES. |
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* |
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* Author: Boris Brezillon <[email protected]> |
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* Author: Arnaud Ebalard <[email protected]> |
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* |
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* This work is based on an initial version written by |
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* Sebastian Andrzej Siewior < sebastian at breakpoint dot cc > |
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*/ |
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|
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#include <crypto/aes.h> |
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#include <crypto/internal/des.h> |
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#include <linux/device.h> |
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#include <linux/dma-mapping.h> |
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#include "cesa.h" |
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struct mv_cesa_des_ctx { |
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struct mv_cesa_ctx base; |
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u8 key[DES_KEY_SIZE]; |
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}; |
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struct mv_cesa_des3_ctx { |
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struct mv_cesa_ctx base; |
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u8 key[DES3_EDE_KEY_SIZE]; |
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}; |
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struct mv_cesa_aes_ctx { |
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struct mv_cesa_ctx base; |
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struct crypto_aes_ctx aes; |
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}; |
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struct mv_cesa_skcipher_dma_iter { |
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struct mv_cesa_dma_iter base; |
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struct mv_cesa_sg_dma_iter src; |
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struct mv_cesa_sg_dma_iter dst; |
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}; |
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static inline void |
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mv_cesa_skcipher_req_iter_init(struct mv_cesa_skcipher_dma_iter *iter, |
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struct skcipher_request *req) |
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{ |
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mv_cesa_req_dma_iter_init(&iter->base, req->cryptlen); |
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mv_cesa_sg_dma_iter_init(&iter->src, req->src, DMA_TO_DEVICE); |
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mv_cesa_sg_dma_iter_init(&iter->dst, req->dst, DMA_FROM_DEVICE); |
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} |
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static inline bool |
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mv_cesa_skcipher_req_iter_next_op(struct mv_cesa_skcipher_dma_iter *iter) |
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{ |
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iter->src.op_offset = 0; |
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iter->dst.op_offset = 0; |
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return mv_cesa_req_dma_iter_next_op(&iter->base); |
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} |
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static inline void |
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mv_cesa_skcipher_dma_cleanup(struct skcipher_request *req) |
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{ |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); |
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|
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if (req->dst != req->src) { |
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dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents, |
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DMA_FROM_DEVICE); |
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dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents, |
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DMA_TO_DEVICE); |
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} else { |
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dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents, |
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DMA_BIDIRECTIONAL); |
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} |
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mv_cesa_dma_cleanup(&creq->base); |
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} |
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static inline void mv_cesa_skcipher_cleanup(struct skcipher_request *req) |
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{ |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); |
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if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ) |
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mv_cesa_skcipher_dma_cleanup(req); |
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} |
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static void mv_cesa_skcipher_std_step(struct skcipher_request *req) |
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{ |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); |
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struct mv_cesa_skcipher_std_req *sreq = &creq->std; |
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struct mv_cesa_engine *engine = creq->base.engine; |
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size_t len = min_t(size_t, req->cryptlen - sreq->offset, |
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CESA_SA_SRAM_PAYLOAD_SIZE); |
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mv_cesa_adjust_op(engine, &sreq->op); |
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if (engine->pool) |
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memcpy(engine->sram_pool, &sreq->op, sizeof(sreq->op)); |
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else |
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memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op)); |
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len = mv_cesa_sg_copy_to_sram(engine, req->src, creq->src_nents, |
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CESA_SA_DATA_SRAM_OFFSET, len, |
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sreq->offset); |
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sreq->size = len; |
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mv_cesa_set_crypt_op_len(&sreq->op, len); |
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|
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/* FIXME: only update enc_len field */ |
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if (!sreq->skip_ctx) { |
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if (engine->pool) |
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memcpy(engine->sram_pool, &sreq->op, sizeof(sreq->op)); |
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else |
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memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op)); |
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sreq->skip_ctx = true; |
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} else if (engine->pool) |
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memcpy(engine->sram_pool, &sreq->op, sizeof(sreq->op.desc)); |
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else |
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memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op.desc)); |
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mv_cesa_set_int_mask(engine, CESA_SA_INT_ACCEL0_DONE); |
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writel_relaxed(CESA_SA_CFG_PARA_DIS, engine->regs + CESA_SA_CFG); |
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WARN_ON(readl(engine->regs + CESA_SA_CMD) & |
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CESA_SA_CMD_EN_CESA_SA_ACCL0); |
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writel(CESA_SA_CMD_EN_CESA_SA_ACCL0, engine->regs + CESA_SA_CMD); |
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} |
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static int mv_cesa_skcipher_std_process(struct skcipher_request *req, |
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u32 status) |
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{ |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); |
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struct mv_cesa_skcipher_std_req *sreq = &creq->std; |
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struct mv_cesa_engine *engine = creq->base.engine; |
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size_t len; |
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len = mv_cesa_sg_copy_from_sram(engine, req->dst, creq->dst_nents, |
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CESA_SA_DATA_SRAM_OFFSET, sreq->size, |
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sreq->offset); |
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sreq->offset += len; |
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if (sreq->offset < req->cryptlen) |
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return -EINPROGRESS; |
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return 0; |
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} |
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static int mv_cesa_skcipher_process(struct crypto_async_request *req, |
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u32 status) |
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{ |
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struct skcipher_request *skreq = skcipher_request_cast(req); |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq); |
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struct mv_cesa_req *basereq = &creq->base; |
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if (mv_cesa_req_get_type(basereq) == CESA_STD_REQ) |
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return mv_cesa_skcipher_std_process(skreq, status); |
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return mv_cesa_dma_process(basereq, status); |
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} |
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static void mv_cesa_skcipher_step(struct crypto_async_request *req) |
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{ |
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struct skcipher_request *skreq = skcipher_request_cast(req); |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq); |
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if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ) |
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mv_cesa_dma_step(&creq->base); |
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else |
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mv_cesa_skcipher_std_step(skreq); |
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} |
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static inline void |
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mv_cesa_skcipher_dma_prepare(struct skcipher_request *req) |
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{ |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); |
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struct mv_cesa_req *basereq = &creq->base; |
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mv_cesa_dma_prepare(basereq, basereq->engine); |
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} |
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static inline void |
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mv_cesa_skcipher_std_prepare(struct skcipher_request *req) |
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{ |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); |
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struct mv_cesa_skcipher_std_req *sreq = &creq->std; |
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sreq->size = 0; |
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sreq->offset = 0; |
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} |
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static inline void mv_cesa_skcipher_prepare(struct crypto_async_request *req, |
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struct mv_cesa_engine *engine) |
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{ |
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struct skcipher_request *skreq = skcipher_request_cast(req); |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq); |
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creq->base.engine = engine; |
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if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ) |
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mv_cesa_skcipher_dma_prepare(skreq); |
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else |
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mv_cesa_skcipher_std_prepare(skreq); |
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} |
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static inline void |
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mv_cesa_skcipher_req_cleanup(struct crypto_async_request *req) |
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{ |
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struct skcipher_request *skreq = skcipher_request_cast(req); |
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mv_cesa_skcipher_cleanup(skreq); |
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} |
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static void |
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mv_cesa_skcipher_complete(struct crypto_async_request *req) |
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{ |
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struct skcipher_request *skreq = skcipher_request_cast(req); |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq); |
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struct mv_cesa_engine *engine = creq->base.engine; |
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unsigned int ivsize; |
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atomic_sub(skreq->cryptlen, &engine->load); |
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ivsize = crypto_skcipher_ivsize(crypto_skcipher_reqtfm(skreq)); |
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if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ) { |
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struct mv_cesa_req *basereq; |
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basereq = &creq->base; |
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memcpy(skreq->iv, basereq->chain.last->op->ctx.skcipher.iv, |
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ivsize); |
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} else if (engine->pool) |
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memcpy(skreq->iv, |
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engine->sram_pool + CESA_SA_CRYPT_IV_SRAM_OFFSET, |
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ivsize); |
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else |
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memcpy_fromio(skreq->iv, |
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engine->sram + CESA_SA_CRYPT_IV_SRAM_OFFSET, |
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ivsize); |
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} |
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static const struct mv_cesa_req_ops mv_cesa_skcipher_req_ops = { |
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.step = mv_cesa_skcipher_step, |
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.process = mv_cesa_skcipher_process, |
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.cleanup = mv_cesa_skcipher_req_cleanup, |
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.complete = mv_cesa_skcipher_complete, |
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}; |
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static void mv_cesa_skcipher_cra_exit(struct crypto_tfm *tfm) |
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{ |
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void *ctx = crypto_tfm_ctx(tfm); |
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memzero_explicit(ctx, tfm->__crt_alg->cra_ctxsize); |
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} |
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static int mv_cesa_skcipher_cra_init(struct crypto_tfm *tfm) |
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{ |
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struct mv_cesa_ctx *ctx = crypto_tfm_ctx(tfm); |
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ctx->ops = &mv_cesa_skcipher_req_ops; |
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crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm), |
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sizeof(struct mv_cesa_skcipher_req)); |
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return 0; |
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} |
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static int mv_cesa_aes_setkey(struct crypto_skcipher *cipher, const u8 *key, |
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unsigned int len) |
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{ |
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struct crypto_tfm *tfm = crypto_skcipher_tfm(cipher); |
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struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm); |
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int remaining; |
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int offset; |
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int ret; |
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int i; |
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ret = aes_expandkey(&ctx->aes, key, len); |
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if (ret) |
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return ret; |
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remaining = (ctx->aes.key_length - 16) / 4; |
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offset = ctx->aes.key_length + 24 - remaining; |
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for (i = 0; i < remaining; i++) |
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ctx->aes.key_dec[4 + i] = ctx->aes.key_enc[offset + i]; |
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return 0; |
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} |
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static int mv_cesa_des_setkey(struct crypto_skcipher *cipher, const u8 *key, |
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unsigned int len) |
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{ |
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struct mv_cesa_des_ctx *ctx = crypto_skcipher_ctx(cipher); |
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int err; |
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err = verify_skcipher_des_key(cipher, key); |
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if (err) |
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return err; |
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memcpy(ctx->key, key, DES_KEY_SIZE); |
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return 0; |
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} |
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static int mv_cesa_des3_ede_setkey(struct crypto_skcipher *cipher, |
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const u8 *key, unsigned int len) |
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{ |
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struct mv_cesa_des_ctx *ctx = crypto_skcipher_ctx(cipher); |
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int err; |
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err = verify_skcipher_des3_key(cipher, key); |
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if (err) |
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return err; |
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memcpy(ctx->key, key, DES3_EDE_KEY_SIZE); |
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return 0; |
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} |
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static int mv_cesa_skcipher_dma_req_init(struct skcipher_request *req, |
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const struct mv_cesa_op_ctx *op_templ) |
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{ |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); |
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gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ? |
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GFP_KERNEL : GFP_ATOMIC; |
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struct mv_cesa_req *basereq = &creq->base; |
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struct mv_cesa_skcipher_dma_iter iter; |
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bool skip_ctx = false; |
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int ret; |
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basereq->chain.first = NULL; |
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basereq->chain.last = NULL; |
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if (req->src != req->dst) { |
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ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents, |
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DMA_TO_DEVICE); |
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if (!ret) |
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return -ENOMEM; |
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ret = dma_map_sg(cesa_dev->dev, req->dst, creq->dst_nents, |
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DMA_FROM_DEVICE); |
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if (!ret) { |
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ret = -ENOMEM; |
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goto err_unmap_src; |
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} |
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} else { |
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ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents, |
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DMA_BIDIRECTIONAL); |
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if (!ret) |
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return -ENOMEM; |
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} |
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mv_cesa_tdma_desc_iter_init(&basereq->chain); |
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mv_cesa_skcipher_req_iter_init(&iter, req); |
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do { |
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struct mv_cesa_op_ctx *op; |
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op = mv_cesa_dma_add_op(&basereq->chain, op_templ, skip_ctx, |
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flags); |
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if (IS_ERR(op)) { |
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ret = PTR_ERR(op); |
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goto err_free_tdma; |
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} |
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skip_ctx = true; |
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mv_cesa_set_crypt_op_len(op, iter.base.op_len); |
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/* Add input transfers */ |
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ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base, |
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&iter.src, flags); |
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if (ret) |
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goto err_free_tdma; |
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/* Add dummy desc to launch the crypto operation */ |
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ret = mv_cesa_dma_add_dummy_launch(&basereq->chain, flags); |
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if (ret) |
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goto err_free_tdma; |
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/* Add output transfers */ |
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ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base, |
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&iter.dst, flags); |
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if (ret) |
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goto err_free_tdma; |
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} while (mv_cesa_skcipher_req_iter_next_op(&iter)); |
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/* Add output data for IV */ |
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ret = mv_cesa_dma_add_result_op(&basereq->chain, |
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CESA_SA_CFG_SRAM_OFFSET, |
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CESA_SA_DATA_SRAM_OFFSET, |
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CESA_TDMA_SRC_IN_SRAM, flags); |
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if (ret) |
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goto err_free_tdma; |
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basereq->chain.last->flags |= CESA_TDMA_END_OF_REQ; |
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return 0; |
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err_free_tdma: |
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mv_cesa_dma_cleanup(basereq); |
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if (req->dst != req->src) |
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dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents, |
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DMA_FROM_DEVICE); |
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err_unmap_src: |
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dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents, |
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req->dst != req->src ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL); |
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return ret; |
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} |
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static inline int |
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mv_cesa_skcipher_std_req_init(struct skcipher_request *req, |
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const struct mv_cesa_op_ctx *op_templ) |
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{ |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); |
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struct mv_cesa_skcipher_std_req *sreq = &creq->std; |
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struct mv_cesa_req *basereq = &creq->base; |
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sreq->op = *op_templ; |
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sreq->skip_ctx = false; |
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basereq->chain.first = NULL; |
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basereq->chain.last = NULL; |
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return 0; |
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} |
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static int mv_cesa_skcipher_req_init(struct skcipher_request *req, |
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struct mv_cesa_op_ctx *tmpl) |
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{ |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); |
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
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unsigned int blksize = crypto_skcipher_blocksize(tfm); |
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int ret; |
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if (!IS_ALIGNED(req->cryptlen, blksize)) |
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return -EINVAL; |
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creq->src_nents = sg_nents_for_len(req->src, req->cryptlen); |
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if (creq->src_nents < 0) { |
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dev_err(cesa_dev->dev, "Invalid number of src SG"); |
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return creq->src_nents; |
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} |
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creq->dst_nents = sg_nents_for_len(req->dst, req->cryptlen); |
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if (creq->dst_nents < 0) { |
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dev_err(cesa_dev->dev, "Invalid number of dst SG"); |
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return creq->dst_nents; |
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} |
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mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY, |
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CESA_SA_DESC_CFG_OP_MSK); |
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if (cesa_dev->caps->has_tdma) |
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ret = mv_cesa_skcipher_dma_req_init(req, tmpl); |
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else |
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ret = mv_cesa_skcipher_std_req_init(req, tmpl); |
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return ret; |
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} |
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static int mv_cesa_skcipher_queue_req(struct skcipher_request *req, |
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struct mv_cesa_op_ctx *tmpl) |
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{ |
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int ret; |
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struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); |
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struct mv_cesa_engine *engine; |
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ret = mv_cesa_skcipher_req_init(req, tmpl); |
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if (ret) |
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return ret; |
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engine = mv_cesa_select_engine(req->cryptlen); |
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mv_cesa_skcipher_prepare(&req->base, engine); |
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ret = mv_cesa_queue_req(&req->base, &creq->base); |
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if (mv_cesa_req_needs_cleanup(&req->base, ret)) |
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mv_cesa_skcipher_cleanup(req); |
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return ret; |
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} |
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static int mv_cesa_des_op(struct skcipher_request *req, |
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struct mv_cesa_op_ctx *tmpl) |
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{ |
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struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm); |
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mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES, |
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CESA_SA_DESC_CFG_CRYPTM_MSK); |
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memcpy(tmpl->ctx.skcipher.key, ctx->key, DES_KEY_SIZE); |
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return mv_cesa_skcipher_queue_req(req, tmpl); |
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} |
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static int mv_cesa_ecb_des_encrypt(struct skcipher_request *req) |
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{ |
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struct mv_cesa_op_ctx tmpl; |
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mv_cesa_set_op_cfg(&tmpl, |
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CESA_SA_DESC_CFG_CRYPTCM_ECB | |
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CESA_SA_DESC_CFG_DIR_ENC); |
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return mv_cesa_des_op(req, &tmpl); |
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} |
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static int mv_cesa_ecb_des_decrypt(struct skcipher_request *req) |
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{ |
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struct mv_cesa_op_ctx tmpl; |
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|
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mv_cesa_set_op_cfg(&tmpl, |
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CESA_SA_DESC_CFG_CRYPTCM_ECB | |
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CESA_SA_DESC_CFG_DIR_DEC); |
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return mv_cesa_des_op(req, &tmpl); |
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} |
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|
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struct skcipher_alg mv_cesa_ecb_des_alg = { |
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.setkey = mv_cesa_des_setkey, |
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.encrypt = mv_cesa_ecb_des_encrypt, |
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.decrypt = mv_cesa_ecb_des_decrypt, |
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.min_keysize = DES_KEY_SIZE, |
|
.max_keysize = DES_KEY_SIZE, |
|
.base = { |
|
.cra_name = "ecb(des)", |
|
.cra_driver_name = "mv-ecb-des", |
|
.cra_priority = 300, |
|
.cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | |
|
CRYPTO_ALG_ALLOCATES_MEMORY, |
|
.cra_blocksize = DES_BLOCK_SIZE, |
|
.cra_ctxsize = sizeof(struct mv_cesa_des_ctx), |
|
.cra_alignmask = 0, |
|
.cra_module = THIS_MODULE, |
|
.cra_init = mv_cesa_skcipher_cra_init, |
|
.cra_exit = mv_cesa_skcipher_cra_exit, |
|
}, |
|
}; |
|
|
|
static int mv_cesa_cbc_des_op(struct skcipher_request *req, |
|
struct mv_cesa_op_ctx *tmpl) |
|
{ |
|
mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC, |
|
CESA_SA_DESC_CFG_CRYPTCM_MSK); |
|
|
|
memcpy(tmpl->ctx.skcipher.iv, req->iv, DES_BLOCK_SIZE); |
|
|
|
return mv_cesa_des_op(req, tmpl); |
|
} |
|
|
|
static int mv_cesa_cbc_des_encrypt(struct skcipher_request *req) |
|
{ |
|
struct mv_cesa_op_ctx tmpl; |
|
|
|
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC); |
|
|
|
return mv_cesa_cbc_des_op(req, &tmpl); |
|
} |
|
|
|
static int mv_cesa_cbc_des_decrypt(struct skcipher_request *req) |
|
{ |
|
struct mv_cesa_op_ctx tmpl; |
|
|
|
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC); |
|
|
|
return mv_cesa_cbc_des_op(req, &tmpl); |
|
} |
|
|
|
struct skcipher_alg mv_cesa_cbc_des_alg = { |
|
.setkey = mv_cesa_des_setkey, |
|
.encrypt = mv_cesa_cbc_des_encrypt, |
|
.decrypt = mv_cesa_cbc_des_decrypt, |
|
.min_keysize = DES_KEY_SIZE, |
|
.max_keysize = DES_KEY_SIZE, |
|
.ivsize = DES_BLOCK_SIZE, |
|
.base = { |
|
.cra_name = "cbc(des)", |
|
.cra_driver_name = "mv-cbc-des", |
|
.cra_priority = 300, |
|
.cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | |
|
CRYPTO_ALG_ALLOCATES_MEMORY, |
|
.cra_blocksize = DES_BLOCK_SIZE, |
|
.cra_ctxsize = sizeof(struct mv_cesa_des_ctx), |
|
.cra_alignmask = 0, |
|
.cra_module = THIS_MODULE, |
|
.cra_init = mv_cesa_skcipher_cra_init, |
|
.cra_exit = mv_cesa_skcipher_cra_exit, |
|
}, |
|
}; |
|
|
|
static int mv_cesa_des3_op(struct skcipher_request *req, |
|
struct mv_cesa_op_ctx *tmpl) |
|
{ |
|
struct mv_cesa_des3_ctx *ctx = crypto_tfm_ctx(req->base.tfm); |
|
|
|
mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_3DES, |
|
CESA_SA_DESC_CFG_CRYPTM_MSK); |
|
|
|
memcpy(tmpl->ctx.skcipher.key, ctx->key, DES3_EDE_KEY_SIZE); |
|
|
|
return mv_cesa_skcipher_queue_req(req, tmpl); |
|
} |
|
|
|
static int mv_cesa_ecb_des3_ede_encrypt(struct skcipher_request *req) |
|
{ |
|
struct mv_cesa_op_ctx tmpl; |
|
|
|
mv_cesa_set_op_cfg(&tmpl, |
|
CESA_SA_DESC_CFG_CRYPTCM_ECB | |
|
CESA_SA_DESC_CFG_3DES_EDE | |
|
CESA_SA_DESC_CFG_DIR_ENC); |
|
|
|
return mv_cesa_des3_op(req, &tmpl); |
|
} |
|
|
|
static int mv_cesa_ecb_des3_ede_decrypt(struct skcipher_request *req) |
|
{ |
|
struct mv_cesa_op_ctx tmpl; |
|
|
|
mv_cesa_set_op_cfg(&tmpl, |
|
CESA_SA_DESC_CFG_CRYPTCM_ECB | |
|
CESA_SA_DESC_CFG_3DES_EDE | |
|
CESA_SA_DESC_CFG_DIR_DEC); |
|
|
|
return mv_cesa_des3_op(req, &tmpl); |
|
} |
|
|
|
struct skcipher_alg mv_cesa_ecb_des3_ede_alg = { |
|
.setkey = mv_cesa_des3_ede_setkey, |
|
.encrypt = mv_cesa_ecb_des3_ede_encrypt, |
|
.decrypt = mv_cesa_ecb_des3_ede_decrypt, |
|
.min_keysize = DES3_EDE_KEY_SIZE, |
|
.max_keysize = DES3_EDE_KEY_SIZE, |
|
.ivsize = DES3_EDE_BLOCK_SIZE, |
|
.base = { |
|
.cra_name = "ecb(des3_ede)", |
|
.cra_driver_name = "mv-ecb-des3-ede", |
|
.cra_priority = 300, |
|
.cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | |
|
CRYPTO_ALG_ALLOCATES_MEMORY, |
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE, |
|
.cra_ctxsize = sizeof(struct mv_cesa_des3_ctx), |
|
.cra_alignmask = 0, |
|
.cra_module = THIS_MODULE, |
|
.cra_init = mv_cesa_skcipher_cra_init, |
|
.cra_exit = mv_cesa_skcipher_cra_exit, |
|
}, |
|
}; |
|
|
|
static int mv_cesa_cbc_des3_op(struct skcipher_request *req, |
|
struct mv_cesa_op_ctx *tmpl) |
|
{ |
|
memcpy(tmpl->ctx.skcipher.iv, req->iv, DES3_EDE_BLOCK_SIZE); |
|
|
|
return mv_cesa_des3_op(req, tmpl); |
|
} |
|
|
|
static int mv_cesa_cbc_des3_ede_encrypt(struct skcipher_request *req) |
|
{ |
|
struct mv_cesa_op_ctx tmpl; |
|
|
|
mv_cesa_set_op_cfg(&tmpl, |
|
CESA_SA_DESC_CFG_CRYPTCM_CBC | |
|
CESA_SA_DESC_CFG_3DES_EDE | |
|
CESA_SA_DESC_CFG_DIR_ENC); |
|
|
|
return mv_cesa_cbc_des3_op(req, &tmpl); |
|
} |
|
|
|
static int mv_cesa_cbc_des3_ede_decrypt(struct skcipher_request *req) |
|
{ |
|
struct mv_cesa_op_ctx tmpl; |
|
|
|
mv_cesa_set_op_cfg(&tmpl, |
|
CESA_SA_DESC_CFG_CRYPTCM_CBC | |
|
CESA_SA_DESC_CFG_3DES_EDE | |
|
CESA_SA_DESC_CFG_DIR_DEC); |
|
|
|
return mv_cesa_cbc_des3_op(req, &tmpl); |
|
} |
|
|
|
struct skcipher_alg mv_cesa_cbc_des3_ede_alg = { |
|
.setkey = mv_cesa_des3_ede_setkey, |
|
.encrypt = mv_cesa_cbc_des3_ede_encrypt, |
|
.decrypt = mv_cesa_cbc_des3_ede_decrypt, |
|
.min_keysize = DES3_EDE_KEY_SIZE, |
|
.max_keysize = DES3_EDE_KEY_SIZE, |
|
.ivsize = DES3_EDE_BLOCK_SIZE, |
|
.base = { |
|
.cra_name = "cbc(des3_ede)", |
|
.cra_driver_name = "mv-cbc-des3-ede", |
|
.cra_priority = 300, |
|
.cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | |
|
CRYPTO_ALG_ALLOCATES_MEMORY, |
|
.cra_blocksize = DES3_EDE_BLOCK_SIZE, |
|
.cra_ctxsize = sizeof(struct mv_cesa_des3_ctx), |
|
.cra_alignmask = 0, |
|
.cra_module = THIS_MODULE, |
|
.cra_init = mv_cesa_skcipher_cra_init, |
|
.cra_exit = mv_cesa_skcipher_cra_exit, |
|
}, |
|
}; |
|
|
|
static int mv_cesa_aes_op(struct skcipher_request *req, |
|
struct mv_cesa_op_ctx *tmpl) |
|
{ |
|
struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm); |
|
int i; |
|
u32 *key; |
|
u32 cfg; |
|
|
|
cfg = CESA_SA_DESC_CFG_CRYPTM_AES; |
|
|
|
if (mv_cesa_get_op_cfg(tmpl) & CESA_SA_DESC_CFG_DIR_DEC) |
|
key = ctx->aes.key_dec; |
|
else |
|
key = ctx->aes.key_enc; |
|
|
|
for (i = 0; i < ctx->aes.key_length / sizeof(u32); i++) |
|
tmpl->ctx.skcipher.key[i] = cpu_to_le32(key[i]); |
|
|
|
if (ctx->aes.key_length == 24) |
|
cfg |= CESA_SA_DESC_CFG_AES_LEN_192; |
|
else if (ctx->aes.key_length == 32) |
|
cfg |= CESA_SA_DESC_CFG_AES_LEN_256; |
|
|
|
mv_cesa_update_op_cfg(tmpl, cfg, |
|
CESA_SA_DESC_CFG_CRYPTM_MSK | |
|
CESA_SA_DESC_CFG_AES_LEN_MSK); |
|
|
|
return mv_cesa_skcipher_queue_req(req, tmpl); |
|
} |
|
|
|
static int mv_cesa_ecb_aes_encrypt(struct skcipher_request *req) |
|
{ |
|
struct mv_cesa_op_ctx tmpl; |
|
|
|
mv_cesa_set_op_cfg(&tmpl, |
|
CESA_SA_DESC_CFG_CRYPTCM_ECB | |
|
CESA_SA_DESC_CFG_DIR_ENC); |
|
|
|
return mv_cesa_aes_op(req, &tmpl); |
|
} |
|
|
|
static int mv_cesa_ecb_aes_decrypt(struct skcipher_request *req) |
|
{ |
|
struct mv_cesa_op_ctx tmpl; |
|
|
|
mv_cesa_set_op_cfg(&tmpl, |
|
CESA_SA_DESC_CFG_CRYPTCM_ECB | |
|
CESA_SA_DESC_CFG_DIR_DEC); |
|
|
|
return mv_cesa_aes_op(req, &tmpl); |
|
} |
|
|
|
struct skcipher_alg mv_cesa_ecb_aes_alg = { |
|
.setkey = mv_cesa_aes_setkey, |
|
.encrypt = mv_cesa_ecb_aes_encrypt, |
|
.decrypt = mv_cesa_ecb_aes_decrypt, |
|
.min_keysize = AES_MIN_KEY_SIZE, |
|
.max_keysize = AES_MAX_KEY_SIZE, |
|
.base = { |
|
.cra_name = "ecb(aes)", |
|
.cra_driver_name = "mv-ecb-aes", |
|
.cra_priority = 300, |
|
.cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | |
|
CRYPTO_ALG_ALLOCATES_MEMORY, |
|
.cra_blocksize = AES_BLOCK_SIZE, |
|
.cra_ctxsize = sizeof(struct mv_cesa_aes_ctx), |
|
.cra_alignmask = 0, |
|
.cra_module = THIS_MODULE, |
|
.cra_init = mv_cesa_skcipher_cra_init, |
|
.cra_exit = mv_cesa_skcipher_cra_exit, |
|
}, |
|
}; |
|
|
|
static int mv_cesa_cbc_aes_op(struct skcipher_request *req, |
|
struct mv_cesa_op_ctx *tmpl) |
|
{ |
|
mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC, |
|
CESA_SA_DESC_CFG_CRYPTCM_MSK); |
|
memcpy(tmpl->ctx.skcipher.iv, req->iv, AES_BLOCK_SIZE); |
|
|
|
return mv_cesa_aes_op(req, tmpl); |
|
} |
|
|
|
static int mv_cesa_cbc_aes_encrypt(struct skcipher_request *req) |
|
{ |
|
struct mv_cesa_op_ctx tmpl; |
|
|
|
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC); |
|
|
|
return mv_cesa_cbc_aes_op(req, &tmpl); |
|
} |
|
|
|
static int mv_cesa_cbc_aes_decrypt(struct skcipher_request *req) |
|
{ |
|
struct mv_cesa_op_ctx tmpl; |
|
|
|
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC); |
|
|
|
return mv_cesa_cbc_aes_op(req, &tmpl); |
|
} |
|
|
|
struct skcipher_alg mv_cesa_cbc_aes_alg = { |
|
.setkey = mv_cesa_aes_setkey, |
|
.encrypt = mv_cesa_cbc_aes_encrypt, |
|
.decrypt = mv_cesa_cbc_aes_decrypt, |
|
.min_keysize = AES_MIN_KEY_SIZE, |
|
.max_keysize = AES_MAX_KEY_SIZE, |
|
.ivsize = AES_BLOCK_SIZE, |
|
.base = { |
|
.cra_name = "cbc(aes)", |
|
.cra_driver_name = "mv-cbc-aes", |
|
.cra_priority = 300, |
|
.cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | |
|
CRYPTO_ALG_ALLOCATES_MEMORY, |
|
.cra_blocksize = AES_BLOCK_SIZE, |
|
.cra_ctxsize = sizeof(struct mv_cesa_aes_ctx), |
|
.cra_alignmask = 0, |
|
.cra_module = THIS_MODULE, |
|
.cra_init = mv_cesa_skcipher_cra_init, |
|
.cra_exit = mv_cesa_skcipher_cra_exit, |
|
}, |
|
};
|
|
|