![Romain Perier](/assets/img/avatar_default.png)
Add a BUG_ON() call when the driver tries to launch a crypto request while the engine is still processing the previous one. This replaces a silent system hang by a verbose kernel panic with the associated backtrace to let the user know that something went wrong in the CESA driver. Signed-off-by: Romain Perier <romain.perier@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
1396 lines
34 KiB
C
1396 lines
34 KiB
C
/*
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* Hash algorithms supported by the CESA: MD5, SHA1 and SHA256.
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*
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* Author: Boris Brezillon <boris.brezillon@free-electrons.com>
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* Author: Arnaud Ebalard <arno@natisbad.org>
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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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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include <crypto/md5.h>
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#include <crypto/sha.h>
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#include "cesa.h"
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struct mv_cesa_ahash_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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};
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static inline void
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mv_cesa_ahash_req_iter_init(struct mv_cesa_ahash_dma_iter *iter,
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struct ahash_request *req)
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{
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
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unsigned int len = req->nbytes + creq->cache_ptr;
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if (!creq->last_req)
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len &= ~CESA_HASH_BLOCK_SIZE_MSK;
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mv_cesa_req_dma_iter_init(&iter->base, len);
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mv_cesa_sg_dma_iter_init(&iter->src, req->src, DMA_TO_DEVICE);
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iter->src.op_offset = creq->cache_ptr;
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}
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static inline bool
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mv_cesa_ahash_req_iter_next_op(struct mv_cesa_ahash_dma_iter *iter)
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{
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iter->src.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 int
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mv_cesa_ahash_dma_alloc_cache(struct mv_cesa_ahash_dma_req *req, gfp_t flags)
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{
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req->cache = dma_pool_alloc(cesa_dev->dma->cache_pool, flags,
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&req->cache_dma);
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if (!req->cache)
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return -ENOMEM;
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return 0;
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}
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static inline void
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mv_cesa_ahash_dma_free_cache(struct mv_cesa_ahash_dma_req *req)
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{
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if (!req->cache)
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return;
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dma_pool_free(cesa_dev->dma->cache_pool, req->cache,
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req->cache_dma);
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}
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static int mv_cesa_ahash_dma_alloc_padding(struct mv_cesa_ahash_dma_req *req,
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gfp_t flags)
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{
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if (req->padding)
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return 0;
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req->padding = dma_pool_alloc(cesa_dev->dma->padding_pool, flags,
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&req->padding_dma);
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if (!req->padding)
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return -ENOMEM;
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return 0;
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}
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static void mv_cesa_ahash_dma_free_padding(struct mv_cesa_ahash_dma_req *req)
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{
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if (!req->padding)
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return;
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dma_pool_free(cesa_dev->dma->padding_pool, req->padding,
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req->padding_dma);
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req->padding = NULL;
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}
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static inline void mv_cesa_ahash_dma_last_cleanup(struct ahash_request *req)
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{
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
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mv_cesa_ahash_dma_free_padding(&creq->req.dma);
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}
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static inline void mv_cesa_ahash_dma_cleanup(struct ahash_request *req)
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{
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
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dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents, DMA_TO_DEVICE);
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mv_cesa_ahash_dma_free_cache(&creq->req.dma);
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mv_cesa_dma_cleanup(&creq->req.dma.base);
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}
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static inline void mv_cesa_ahash_cleanup(struct ahash_request *req)
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{
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
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if (creq->req.base.type == CESA_DMA_REQ)
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mv_cesa_ahash_dma_cleanup(req);
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}
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static void mv_cesa_ahash_last_cleanup(struct ahash_request *req)
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{
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
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if (creq->req.base.type == CESA_DMA_REQ)
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mv_cesa_ahash_dma_last_cleanup(req);
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}
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static int mv_cesa_ahash_pad_len(struct mv_cesa_ahash_req *creq)
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{
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unsigned int index, padlen;
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index = creq->len & CESA_HASH_BLOCK_SIZE_MSK;
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padlen = (index < 56) ? (56 - index) : (64 + 56 - index);
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return padlen;
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}
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static int mv_cesa_ahash_pad_req(struct mv_cesa_ahash_req *creq, u8 *buf)
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{
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unsigned int index, padlen;
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buf[0] = 0x80;
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/* Pad out to 56 mod 64 */
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index = creq->len & CESA_HASH_BLOCK_SIZE_MSK;
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padlen = mv_cesa_ahash_pad_len(creq);
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memset(buf + 1, 0, padlen - 1);
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if (creq->algo_le) {
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__le64 bits = cpu_to_le64(creq->len << 3);
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memcpy(buf + padlen, &bits, sizeof(bits));
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} else {
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__be64 bits = cpu_to_be64(creq->len << 3);
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memcpy(buf + padlen, &bits, sizeof(bits));
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}
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return padlen + 8;
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}
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static void mv_cesa_ahash_std_step(struct ahash_request *req)
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{
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
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struct mv_cesa_ahash_std_req *sreq = &creq->req.std;
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struct mv_cesa_engine *engine = sreq->base.engine;
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struct mv_cesa_op_ctx *op;
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unsigned int new_cache_ptr = 0;
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u32 frag_mode;
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size_t len;
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if (creq->cache_ptr)
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memcpy_toio(engine->sram + CESA_SA_DATA_SRAM_OFFSET,
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creq->cache, creq->cache_ptr);
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len = min_t(size_t, req->nbytes + creq->cache_ptr - sreq->offset,
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CESA_SA_SRAM_PAYLOAD_SIZE);
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if (!creq->last_req) {
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new_cache_ptr = len & CESA_HASH_BLOCK_SIZE_MSK;
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len &= ~CESA_HASH_BLOCK_SIZE_MSK;
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}
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if (len - creq->cache_ptr)
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sreq->offset += sg_pcopy_to_buffer(req->src, creq->src_nents,
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engine->sram +
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CESA_SA_DATA_SRAM_OFFSET +
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creq->cache_ptr,
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len - creq->cache_ptr,
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sreq->offset);
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op = &creq->op_tmpl;
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frag_mode = mv_cesa_get_op_cfg(op) & CESA_SA_DESC_CFG_FRAG_MSK;
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if (creq->last_req && sreq->offset == req->nbytes &&
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creq->len <= CESA_SA_DESC_MAC_SRC_TOTAL_LEN_MAX) {
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if (frag_mode == CESA_SA_DESC_CFG_FIRST_FRAG)
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frag_mode = CESA_SA_DESC_CFG_NOT_FRAG;
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else if (frag_mode == CESA_SA_DESC_CFG_MID_FRAG)
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frag_mode = CESA_SA_DESC_CFG_LAST_FRAG;
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}
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if (frag_mode == CESA_SA_DESC_CFG_NOT_FRAG ||
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frag_mode == CESA_SA_DESC_CFG_LAST_FRAG) {
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if (len &&
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creq->len <= CESA_SA_DESC_MAC_SRC_TOTAL_LEN_MAX) {
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mv_cesa_set_mac_op_total_len(op, creq->len);
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} else {
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int trailerlen = mv_cesa_ahash_pad_len(creq) + 8;
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if (len + trailerlen > CESA_SA_SRAM_PAYLOAD_SIZE) {
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len &= CESA_HASH_BLOCK_SIZE_MSK;
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new_cache_ptr = 64 - trailerlen;
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memcpy_fromio(creq->cache,
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engine->sram +
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CESA_SA_DATA_SRAM_OFFSET + len,
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new_cache_ptr);
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} else {
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len += mv_cesa_ahash_pad_req(creq,
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engine->sram + len +
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CESA_SA_DATA_SRAM_OFFSET);
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}
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if (frag_mode == CESA_SA_DESC_CFG_LAST_FRAG)
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frag_mode = CESA_SA_DESC_CFG_MID_FRAG;
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else
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frag_mode = CESA_SA_DESC_CFG_FIRST_FRAG;
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}
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}
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mv_cesa_set_mac_op_frag_len(op, len);
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mv_cesa_update_op_cfg(op, frag_mode, CESA_SA_DESC_CFG_FRAG_MSK);
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/* FIXME: only update enc_len field */
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memcpy_toio(engine->sram, op, sizeof(*op));
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if (frag_mode == CESA_SA_DESC_CFG_FIRST_FRAG)
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mv_cesa_update_op_cfg(op, CESA_SA_DESC_CFG_MID_FRAG,
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CESA_SA_DESC_CFG_FRAG_MSK);
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creq->cache_ptr = new_cache_ptr;
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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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BUG_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_ahash_std_process(struct ahash_request *req, u32 status)
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{
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
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struct mv_cesa_ahash_std_req *sreq = &creq->req.std;
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if (sreq->offset < (req->nbytes - creq->cache_ptr))
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return -EINPROGRESS;
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return 0;
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}
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static inline void mv_cesa_ahash_dma_prepare(struct ahash_request *req)
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{
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
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struct mv_cesa_tdma_req *dreq = &creq->req.dma.base;
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mv_cesa_dma_prepare(dreq, dreq->base.engine);
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}
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static void mv_cesa_ahash_std_prepare(struct ahash_request *req)
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{
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
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struct mv_cesa_ahash_std_req *sreq = &creq->req.std;
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struct mv_cesa_engine *engine = sreq->base.engine;
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sreq->offset = 0;
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mv_cesa_adjust_op(engine, &creq->op_tmpl);
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memcpy_toio(engine->sram, &creq->op_tmpl, sizeof(creq->op_tmpl));
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}
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static void mv_cesa_ahash_step(struct crypto_async_request *req)
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{
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struct ahash_request *ahashreq = ahash_request_cast(req);
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(ahashreq);
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if (creq->req.base.type == CESA_DMA_REQ)
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mv_cesa_dma_step(&creq->req.dma.base);
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else
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mv_cesa_ahash_std_step(ahashreq);
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}
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static int mv_cesa_ahash_process(struct crypto_async_request *req, u32 status)
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{
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struct ahash_request *ahashreq = ahash_request_cast(req);
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(ahashreq);
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struct mv_cesa_engine *engine = creq->req.base.engine;
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unsigned int digsize;
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int ret, i;
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if (creq->req.base.type == CESA_DMA_REQ)
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ret = mv_cesa_dma_process(&creq->req.dma.base, status);
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else
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ret = mv_cesa_ahash_std_process(ahashreq, status);
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if (ret == -EINPROGRESS)
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return ret;
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digsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(ahashreq));
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for (i = 0; i < digsize / 4; i++)
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creq->state[i] = readl_relaxed(engine->regs + CESA_IVDIG(i));
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if (creq->cache_ptr)
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sg_pcopy_to_buffer(ahashreq->src, creq->src_nents,
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creq->cache,
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creq->cache_ptr,
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ahashreq->nbytes - creq->cache_ptr);
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if (creq->last_req) {
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/*
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* Hardware's MD5 digest is in little endian format, but
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* SHA in big endian format
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*/
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if (creq->algo_le) {
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__le32 *result = (void *)ahashreq->result;
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for (i = 0; i < digsize / 4; i++)
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result[i] = cpu_to_le32(creq->state[i]);
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} else {
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__be32 *result = (void *)ahashreq->result;
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for (i = 0; i < digsize / 4; i++)
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result[i] = cpu_to_be32(creq->state[i]);
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}
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}
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return ret;
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}
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static void mv_cesa_ahash_prepare(struct crypto_async_request *req,
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struct mv_cesa_engine *engine)
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{
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struct ahash_request *ahashreq = ahash_request_cast(req);
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(ahashreq);
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unsigned int digsize;
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int i;
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creq->req.base.engine = engine;
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if (creq->req.base.type == CESA_DMA_REQ)
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mv_cesa_ahash_dma_prepare(ahashreq);
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else
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mv_cesa_ahash_std_prepare(ahashreq);
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digsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(ahashreq));
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for (i = 0; i < digsize / 4; i++)
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writel_relaxed(creq->state[i], engine->regs + CESA_IVDIG(i));
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}
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static void mv_cesa_ahash_req_cleanup(struct crypto_async_request *req)
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{
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struct ahash_request *ahashreq = ahash_request_cast(req);
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(ahashreq);
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if (creq->last_req)
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mv_cesa_ahash_last_cleanup(ahashreq);
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mv_cesa_ahash_cleanup(ahashreq);
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}
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static const struct mv_cesa_req_ops mv_cesa_ahash_req_ops = {
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.step = mv_cesa_ahash_step,
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.process = mv_cesa_ahash_process,
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.prepare = mv_cesa_ahash_prepare,
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.cleanup = mv_cesa_ahash_req_cleanup,
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};
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static int mv_cesa_ahash_init(struct ahash_request *req,
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struct mv_cesa_op_ctx *tmpl, bool algo_le)
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{
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
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memset(creq, 0, sizeof(*creq));
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mv_cesa_update_op_cfg(tmpl,
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CESA_SA_DESC_CFG_OP_MAC_ONLY |
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CESA_SA_DESC_CFG_FIRST_FRAG,
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CESA_SA_DESC_CFG_OP_MSK |
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CESA_SA_DESC_CFG_FRAG_MSK);
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mv_cesa_set_mac_op_total_len(tmpl, 0);
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mv_cesa_set_mac_op_frag_len(tmpl, 0);
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creq->op_tmpl = *tmpl;
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creq->len = 0;
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creq->algo_le = algo_le;
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return 0;
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}
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static inline int mv_cesa_ahash_cra_init(struct crypto_tfm *tfm)
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{
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struct mv_cesa_hash_ctx *ctx = crypto_tfm_ctx(tfm);
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ctx->base.ops = &mv_cesa_ahash_req_ops;
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crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
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sizeof(struct mv_cesa_ahash_req));
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return 0;
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}
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static int mv_cesa_ahash_cache_req(struct ahash_request *req, bool *cached)
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{
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struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
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if (creq->cache_ptr + req->nbytes < 64 && !creq->last_req) {
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*cached = true;
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if (!req->nbytes)
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return 0;
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sg_pcopy_to_buffer(req->src, creq->src_nents,
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creq->cache + creq->cache_ptr,
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req->nbytes, 0);
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creq->cache_ptr += req->nbytes;
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}
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return 0;
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}
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static struct mv_cesa_op_ctx *
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mv_cesa_dma_add_frag(struct mv_cesa_tdma_chain *chain,
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struct mv_cesa_op_ctx *tmpl, unsigned int frag_len,
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gfp_t flags)
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{
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struct mv_cesa_op_ctx *op;
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int ret;
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op = mv_cesa_dma_add_op(chain, tmpl, false, flags);
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if (IS_ERR(op))
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return op;
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/* Set the operation block fragment length. */
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mv_cesa_set_mac_op_frag_len(op, frag_len);
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/* Append dummy desc to launch operation */
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ret = mv_cesa_dma_add_dummy_launch(chain, flags);
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if (ret)
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return ERR_PTR(ret);
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if (mv_cesa_mac_op_is_first_frag(tmpl))
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mv_cesa_update_op_cfg(tmpl,
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CESA_SA_DESC_CFG_MID_FRAG,
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CESA_SA_DESC_CFG_FRAG_MSK);
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return op;
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}
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static int
|
|
mv_cesa_ahash_dma_add_cache(struct mv_cesa_tdma_chain *chain,
|
|
struct mv_cesa_ahash_dma_iter *dma_iter,
|
|
struct mv_cesa_ahash_req *creq,
|
|
gfp_t flags)
|
|
{
|
|
struct mv_cesa_ahash_dma_req *ahashdreq = &creq->req.dma;
|
|
int ret;
|
|
|
|
if (!creq->cache_ptr)
|
|
return 0;
|
|
|
|
ret = mv_cesa_ahash_dma_alloc_cache(ahashdreq, flags);
|
|
if (ret)
|
|
return ret;
|
|
|
|
memcpy(ahashdreq->cache, creq->cache, creq->cache_ptr);
|
|
|
|
return mv_cesa_dma_add_data_transfer(chain,
|
|
CESA_SA_DATA_SRAM_OFFSET,
|
|
ahashdreq->cache_dma,
|
|
creq->cache_ptr,
|
|
CESA_TDMA_DST_IN_SRAM,
|
|
flags);
|
|
}
|
|
|
|
static struct mv_cesa_op_ctx *
|
|
mv_cesa_ahash_dma_last_req(struct mv_cesa_tdma_chain *chain,
|
|
struct mv_cesa_ahash_dma_iter *dma_iter,
|
|
struct mv_cesa_ahash_req *creq,
|
|
unsigned int frag_len, gfp_t flags)
|
|
{
|
|
struct mv_cesa_ahash_dma_req *ahashdreq = &creq->req.dma;
|
|
unsigned int len, trailerlen, padoff = 0;
|
|
struct mv_cesa_op_ctx *op;
|
|
int ret;
|
|
|
|
/*
|
|
* If the transfer is smaller than our maximum length, and we have
|
|
* some data outstanding, we can ask the engine to finish the hash.
|
|
*/
|
|
if (creq->len <= CESA_SA_DESC_MAC_SRC_TOTAL_LEN_MAX && frag_len) {
|
|
op = mv_cesa_dma_add_frag(chain, &creq->op_tmpl, frag_len,
|
|
flags);
|
|
if (IS_ERR(op))
|
|
return op;
|
|
|
|
mv_cesa_set_mac_op_total_len(op, creq->len);
|
|
mv_cesa_update_op_cfg(op, mv_cesa_mac_op_is_first_frag(op) ?
|
|
CESA_SA_DESC_CFG_NOT_FRAG :
|
|
CESA_SA_DESC_CFG_LAST_FRAG,
|
|
CESA_SA_DESC_CFG_FRAG_MSK);
|
|
|
|
return op;
|
|
}
|
|
|
|
/*
|
|
* The request is longer than the engine can handle, or we have
|
|
* no data outstanding. Manually generate the padding, adding it
|
|
* as a "mid" fragment.
|
|
*/
|
|
ret = mv_cesa_ahash_dma_alloc_padding(ahashdreq, flags);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
trailerlen = mv_cesa_ahash_pad_req(creq, ahashdreq->padding);
|
|
|
|
len = min(CESA_SA_SRAM_PAYLOAD_SIZE - frag_len, trailerlen);
|
|
if (len) {
|
|
ret = mv_cesa_dma_add_data_transfer(chain,
|
|
CESA_SA_DATA_SRAM_OFFSET +
|
|
frag_len,
|
|
ahashdreq->padding_dma,
|
|
len, CESA_TDMA_DST_IN_SRAM,
|
|
flags);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
op = mv_cesa_dma_add_frag(chain, &creq->op_tmpl, frag_len + len,
|
|
flags);
|
|
if (IS_ERR(op))
|
|
return op;
|
|
|
|
if (len == trailerlen)
|
|
return op;
|
|
|
|
padoff += len;
|
|
}
|
|
|
|
ret = mv_cesa_dma_add_data_transfer(chain,
|
|
CESA_SA_DATA_SRAM_OFFSET,
|
|
ahashdreq->padding_dma +
|
|
padoff,
|
|
trailerlen - padoff,
|
|
CESA_TDMA_DST_IN_SRAM,
|
|
flags);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
return mv_cesa_dma_add_frag(chain, &creq->op_tmpl, trailerlen - padoff,
|
|
flags);
|
|
}
|
|
|
|
static int mv_cesa_ahash_dma_req_init(struct ahash_request *req)
|
|
{
|
|
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
|
|
gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
|
|
GFP_KERNEL : GFP_ATOMIC;
|
|
struct mv_cesa_ahash_dma_req *ahashdreq = &creq->req.dma;
|
|
struct mv_cesa_tdma_req *dreq = &ahashdreq->base;
|
|
struct mv_cesa_ahash_dma_iter iter;
|
|
struct mv_cesa_op_ctx *op = NULL;
|
|
unsigned int frag_len;
|
|
int ret;
|
|
|
|
dreq->chain.first = NULL;
|
|
dreq->chain.last = NULL;
|
|
|
|
if (creq->src_nents) {
|
|
ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
|
|
DMA_TO_DEVICE);
|
|
if (!ret) {
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
mv_cesa_tdma_desc_iter_init(&dreq->chain);
|
|
mv_cesa_ahash_req_iter_init(&iter, req);
|
|
|
|
/*
|
|
* Add the cache (left-over data from a previous block) first.
|
|
* This will never overflow the SRAM size.
|
|
*/
|
|
ret = mv_cesa_ahash_dma_add_cache(&dreq->chain, &iter, creq, flags);
|
|
if (ret)
|
|
goto err_free_tdma;
|
|
|
|
if (iter.src.sg) {
|
|
/*
|
|
* Add all the new data, inserting an operation block and
|
|
* launch command between each full SRAM block-worth of
|
|
* data. We intentionally do not add the final op block.
|
|
*/
|
|
while (true) {
|
|
ret = mv_cesa_dma_add_op_transfers(&dreq->chain,
|
|
&iter.base,
|
|
&iter.src, flags);
|
|
if (ret)
|
|
goto err_free_tdma;
|
|
|
|
frag_len = iter.base.op_len;
|
|
|
|
if (!mv_cesa_ahash_req_iter_next_op(&iter))
|
|
break;
|
|
|
|
op = mv_cesa_dma_add_frag(&dreq->chain, &creq->op_tmpl,
|
|
frag_len, flags);
|
|
if (IS_ERR(op)) {
|
|
ret = PTR_ERR(op);
|
|
goto err_free_tdma;
|
|
}
|
|
}
|
|
} else {
|
|
/* Account for the data that was in the cache. */
|
|
frag_len = iter.base.op_len;
|
|
}
|
|
|
|
/*
|
|
* At this point, frag_len indicates whether we have any data
|
|
* outstanding which needs an operation. Queue up the final
|
|
* operation, which depends whether this is the final request.
|
|
*/
|
|
if (creq->last_req)
|
|
op = mv_cesa_ahash_dma_last_req(&dreq->chain, &iter, creq,
|
|
frag_len, flags);
|
|
else if (frag_len)
|
|
op = mv_cesa_dma_add_frag(&dreq->chain, &creq->op_tmpl,
|
|
frag_len, flags);
|
|
|
|
if (IS_ERR(op)) {
|
|
ret = PTR_ERR(op);
|
|
goto err_free_tdma;
|
|
}
|
|
|
|
if (op) {
|
|
/* Add dummy desc to wait for crypto operation end */
|
|
ret = mv_cesa_dma_add_dummy_end(&dreq->chain, flags);
|
|
if (ret)
|
|
goto err_free_tdma;
|
|
}
|
|
|
|
if (!creq->last_req)
|
|
creq->cache_ptr = req->nbytes + creq->cache_ptr -
|
|
iter.base.len;
|
|
else
|
|
creq->cache_ptr = 0;
|
|
|
|
return 0;
|
|
|
|
err_free_tdma:
|
|
mv_cesa_dma_cleanup(dreq);
|
|
dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents, DMA_TO_DEVICE);
|
|
|
|
err:
|
|
mv_cesa_ahash_last_cleanup(req);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mv_cesa_ahash_req_init(struct ahash_request *req, bool *cached)
|
|
{
|
|
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
|
|
int ret;
|
|
|
|
if (cesa_dev->caps->has_tdma)
|
|
creq->req.base.type = CESA_DMA_REQ;
|
|
else
|
|
creq->req.base.type = CESA_STD_REQ;
|
|
|
|
creq->src_nents = sg_nents_for_len(req->src, req->nbytes);
|
|
if (creq->src_nents < 0) {
|
|
dev_err(cesa_dev->dev, "Invalid number of src SG");
|
|
return creq->src_nents;
|
|
}
|
|
|
|
ret = mv_cesa_ahash_cache_req(req, cached);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (*cached)
|
|
return 0;
|
|
|
|
if (creq->req.base.type == CESA_DMA_REQ)
|
|
ret = mv_cesa_ahash_dma_req_init(req);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mv_cesa_ahash_update(struct ahash_request *req)
|
|
{
|
|
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
|
|
bool cached = false;
|
|
int ret;
|
|
|
|
creq->len += req->nbytes;
|
|
ret = mv_cesa_ahash_req_init(req, &cached);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (cached)
|
|
return 0;
|
|
|
|
ret = mv_cesa_queue_req(&req->base);
|
|
if (mv_cesa_req_needs_cleanup(&req->base, ret))
|
|
mv_cesa_ahash_cleanup(req);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mv_cesa_ahash_final(struct ahash_request *req)
|
|
{
|
|
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
|
|
struct mv_cesa_op_ctx *tmpl = &creq->op_tmpl;
|
|
bool cached = false;
|
|
int ret;
|
|
|
|
mv_cesa_set_mac_op_total_len(tmpl, creq->len);
|
|
creq->last_req = true;
|
|
req->nbytes = 0;
|
|
|
|
ret = mv_cesa_ahash_req_init(req, &cached);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (cached)
|
|
return 0;
|
|
|
|
ret = mv_cesa_queue_req(&req->base);
|
|
if (mv_cesa_req_needs_cleanup(&req->base, ret))
|
|
mv_cesa_ahash_cleanup(req);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mv_cesa_ahash_finup(struct ahash_request *req)
|
|
{
|
|
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
|
|
struct mv_cesa_op_ctx *tmpl = &creq->op_tmpl;
|
|
bool cached = false;
|
|
int ret;
|
|
|
|
creq->len += req->nbytes;
|
|
mv_cesa_set_mac_op_total_len(tmpl, creq->len);
|
|
creq->last_req = true;
|
|
|
|
ret = mv_cesa_ahash_req_init(req, &cached);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (cached)
|
|
return 0;
|
|
|
|
ret = mv_cesa_queue_req(&req->base);
|
|
if (mv_cesa_req_needs_cleanup(&req->base, ret))
|
|
mv_cesa_ahash_cleanup(req);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mv_cesa_ahash_export(struct ahash_request *req, void *hash,
|
|
u64 *len, void *cache)
|
|
{
|
|
struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
|
|
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
|
|
unsigned int digsize = crypto_ahash_digestsize(ahash);
|
|
unsigned int blocksize;
|
|
|
|
blocksize = crypto_ahash_blocksize(ahash);
|
|
|
|
*len = creq->len;
|
|
memcpy(hash, creq->state, digsize);
|
|
memset(cache, 0, blocksize);
|
|
memcpy(cache, creq->cache, creq->cache_ptr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_ahash_import(struct ahash_request *req, const void *hash,
|
|
u64 len, const void *cache)
|
|
{
|
|
struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
|
|
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
|
|
unsigned int digsize = crypto_ahash_digestsize(ahash);
|
|
unsigned int blocksize;
|
|
unsigned int cache_ptr;
|
|
int ret;
|
|
|
|
ret = crypto_ahash_init(req);
|
|
if (ret)
|
|
return ret;
|
|
|
|
blocksize = crypto_ahash_blocksize(ahash);
|
|
if (len >= blocksize)
|
|
mv_cesa_update_op_cfg(&creq->op_tmpl,
|
|
CESA_SA_DESC_CFG_MID_FRAG,
|
|
CESA_SA_DESC_CFG_FRAG_MSK);
|
|
|
|
creq->len = len;
|
|
memcpy(creq->state, hash, digsize);
|
|
creq->cache_ptr = 0;
|
|
|
|
cache_ptr = do_div(len, blocksize);
|
|
if (!cache_ptr)
|
|
return 0;
|
|
|
|
memcpy(creq->cache, cache, cache_ptr);
|
|
creq->cache_ptr = cache_ptr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_md5_init(struct ahash_request *req)
|
|
{
|
|
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
|
|
struct mv_cesa_op_ctx tmpl = { };
|
|
|
|
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_MD5);
|
|
creq->state[0] = MD5_H0;
|
|
creq->state[1] = MD5_H1;
|
|
creq->state[2] = MD5_H2;
|
|
creq->state[3] = MD5_H3;
|
|
|
|
mv_cesa_ahash_init(req, &tmpl, true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_md5_export(struct ahash_request *req, void *out)
|
|
{
|
|
struct md5_state *out_state = out;
|
|
|
|
return mv_cesa_ahash_export(req, out_state->hash,
|
|
&out_state->byte_count, out_state->block);
|
|
}
|
|
|
|
static int mv_cesa_md5_import(struct ahash_request *req, const void *in)
|
|
{
|
|
const struct md5_state *in_state = in;
|
|
|
|
return mv_cesa_ahash_import(req, in_state->hash, in_state->byte_count,
|
|
in_state->block);
|
|
}
|
|
|
|
static int mv_cesa_md5_digest(struct ahash_request *req)
|
|
{
|
|
int ret;
|
|
|
|
ret = mv_cesa_md5_init(req);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return mv_cesa_ahash_finup(req);
|
|
}
|
|
|
|
struct ahash_alg mv_md5_alg = {
|
|
.init = mv_cesa_md5_init,
|
|
.update = mv_cesa_ahash_update,
|
|
.final = mv_cesa_ahash_final,
|
|
.finup = mv_cesa_ahash_finup,
|
|
.digest = mv_cesa_md5_digest,
|
|
.export = mv_cesa_md5_export,
|
|
.import = mv_cesa_md5_import,
|
|
.halg = {
|
|
.digestsize = MD5_DIGEST_SIZE,
|
|
.statesize = sizeof(struct md5_state),
|
|
.base = {
|
|
.cra_name = "md5",
|
|
.cra_driver_name = "mv-md5",
|
|
.cra_priority = 300,
|
|
.cra_flags = CRYPTO_ALG_ASYNC |
|
|
CRYPTO_ALG_KERN_DRIVER_ONLY,
|
|
.cra_blocksize = MD5_HMAC_BLOCK_SIZE,
|
|
.cra_ctxsize = sizeof(struct mv_cesa_hash_ctx),
|
|
.cra_init = mv_cesa_ahash_cra_init,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
}
|
|
};
|
|
|
|
static int mv_cesa_sha1_init(struct ahash_request *req)
|
|
{
|
|
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
|
|
struct mv_cesa_op_ctx tmpl = { };
|
|
|
|
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_SHA1);
|
|
creq->state[0] = SHA1_H0;
|
|
creq->state[1] = SHA1_H1;
|
|
creq->state[2] = SHA1_H2;
|
|
creq->state[3] = SHA1_H3;
|
|
creq->state[4] = SHA1_H4;
|
|
|
|
mv_cesa_ahash_init(req, &tmpl, false);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_sha1_export(struct ahash_request *req, void *out)
|
|
{
|
|
struct sha1_state *out_state = out;
|
|
|
|
return mv_cesa_ahash_export(req, out_state->state, &out_state->count,
|
|
out_state->buffer);
|
|
}
|
|
|
|
static int mv_cesa_sha1_import(struct ahash_request *req, const void *in)
|
|
{
|
|
const struct sha1_state *in_state = in;
|
|
|
|
return mv_cesa_ahash_import(req, in_state->state, in_state->count,
|
|
in_state->buffer);
|
|
}
|
|
|
|
static int mv_cesa_sha1_digest(struct ahash_request *req)
|
|
{
|
|
int ret;
|
|
|
|
ret = mv_cesa_sha1_init(req);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return mv_cesa_ahash_finup(req);
|
|
}
|
|
|
|
struct ahash_alg mv_sha1_alg = {
|
|
.init = mv_cesa_sha1_init,
|
|
.update = mv_cesa_ahash_update,
|
|
.final = mv_cesa_ahash_final,
|
|
.finup = mv_cesa_ahash_finup,
|
|
.digest = mv_cesa_sha1_digest,
|
|
.export = mv_cesa_sha1_export,
|
|
.import = mv_cesa_sha1_import,
|
|
.halg = {
|
|
.digestsize = SHA1_DIGEST_SIZE,
|
|
.statesize = sizeof(struct sha1_state),
|
|
.base = {
|
|
.cra_name = "sha1",
|
|
.cra_driver_name = "mv-sha1",
|
|
.cra_priority = 300,
|
|
.cra_flags = CRYPTO_ALG_ASYNC |
|
|
CRYPTO_ALG_KERN_DRIVER_ONLY,
|
|
.cra_blocksize = SHA1_BLOCK_SIZE,
|
|
.cra_ctxsize = sizeof(struct mv_cesa_hash_ctx),
|
|
.cra_init = mv_cesa_ahash_cra_init,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
}
|
|
};
|
|
|
|
static int mv_cesa_sha256_init(struct ahash_request *req)
|
|
{
|
|
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
|
|
struct mv_cesa_op_ctx tmpl = { };
|
|
|
|
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_SHA256);
|
|
creq->state[0] = SHA256_H0;
|
|
creq->state[1] = SHA256_H1;
|
|
creq->state[2] = SHA256_H2;
|
|
creq->state[3] = SHA256_H3;
|
|
creq->state[4] = SHA256_H4;
|
|
creq->state[5] = SHA256_H5;
|
|
creq->state[6] = SHA256_H6;
|
|
creq->state[7] = SHA256_H7;
|
|
|
|
mv_cesa_ahash_init(req, &tmpl, false);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_sha256_digest(struct ahash_request *req)
|
|
{
|
|
int ret;
|
|
|
|
ret = mv_cesa_sha256_init(req);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return mv_cesa_ahash_finup(req);
|
|
}
|
|
|
|
static int mv_cesa_sha256_export(struct ahash_request *req, void *out)
|
|
{
|
|
struct sha256_state *out_state = out;
|
|
|
|
return mv_cesa_ahash_export(req, out_state->state, &out_state->count,
|
|
out_state->buf);
|
|
}
|
|
|
|
static int mv_cesa_sha256_import(struct ahash_request *req, const void *in)
|
|
{
|
|
const struct sha256_state *in_state = in;
|
|
|
|
return mv_cesa_ahash_import(req, in_state->state, in_state->count,
|
|
in_state->buf);
|
|
}
|
|
|
|
struct ahash_alg mv_sha256_alg = {
|
|
.init = mv_cesa_sha256_init,
|
|
.update = mv_cesa_ahash_update,
|
|
.final = mv_cesa_ahash_final,
|
|
.finup = mv_cesa_ahash_finup,
|
|
.digest = mv_cesa_sha256_digest,
|
|
.export = mv_cesa_sha256_export,
|
|
.import = mv_cesa_sha256_import,
|
|
.halg = {
|
|
.digestsize = SHA256_DIGEST_SIZE,
|
|
.statesize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "sha256",
|
|
.cra_driver_name = "mv-sha256",
|
|
.cra_priority = 300,
|
|
.cra_flags = CRYPTO_ALG_ASYNC |
|
|
CRYPTO_ALG_KERN_DRIVER_ONLY,
|
|
.cra_blocksize = SHA256_BLOCK_SIZE,
|
|
.cra_ctxsize = sizeof(struct mv_cesa_hash_ctx),
|
|
.cra_init = mv_cesa_ahash_cra_init,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
}
|
|
};
|
|
|
|
struct mv_cesa_ahash_result {
|
|
struct completion completion;
|
|
int error;
|
|
};
|
|
|
|
static void mv_cesa_hmac_ahash_complete(struct crypto_async_request *req,
|
|
int error)
|
|
{
|
|
struct mv_cesa_ahash_result *result = req->data;
|
|
|
|
if (error == -EINPROGRESS)
|
|
return;
|
|
|
|
result->error = error;
|
|
complete(&result->completion);
|
|
}
|
|
|
|
static int mv_cesa_ahmac_iv_state_init(struct ahash_request *req, u8 *pad,
|
|
void *state, unsigned int blocksize)
|
|
{
|
|
struct mv_cesa_ahash_result result;
|
|
struct scatterlist sg;
|
|
int ret;
|
|
|
|
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
|
|
mv_cesa_hmac_ahash_complete, &result);
|
|
sg_init_one(&sg, pad, blocksize);
|
|
ahash_request_set_crypt(req, &sg, pad, blocksize);
|
|
init_completion(&result.completion);
|
|
|
|
ret = crypto_ahash_init(req);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = crypto_ahash_update(req);
|
|
if (ret && ret != -EINPROGRESS)
|
|
return ret;
|
|
|
|
wait_for_completion_interruptible(&result.completion);
|
|
if (result.error)
|
|
return result.error;
|
|
|
|
ret = crypto_ahash_export(req, state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_ahmac_pad_init(struct ahash_request *req,
|
|
const u8 *key, unsigned int keylen,
|
|
u8 *ipad, u8 *opad,
|
|
unsigned int blocksize)
|
|
{
|
|
struct mv_cesa_ahash_result result;
|
|
struct scatterlist sg;
|
|
int ret;
|
|
int i;
|
|
|
|
if (keylen <= blocksize) {
|
|
memcpy(ipad, key, keylen);
|
|
} else {
|
|
u8 *keydup = kmemdup(key, keylen, GFP_KERNEL);
|
|
|
|
if (!keydup)
|
|
return -ENOMEM;
|
|
|
|
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
|
|
mv_cesa_hmac_ahash_complete,
|
|
&result);
|
|
sg_init_one(&sg, keydup, keylen);
|
|
ahash_request_set_crypt(req, &sg, ipad, keylen);
|
|
init_completion(&result.completion);
|
|
|
|
ret = crypto_ahash_digest(req);
|
|
if (ret == -EINPROGRESS) {
|
|
wait_for_completion_interruptible(&result.completion);
|
|
ret = result.error;
|
|
}
|
|
|
|
/* Set the memory region to 0 to avoid any leak. */
|
|
memset(keydup, 0, keylen);
|
|
kfree(keydup);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
keylen = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
|
|
}
|
|
|
|
memset(ipad + keylen, 0, blocksize - keylen);
|
|
memcpy(opad, ipad, blocksize);
|
|
|
|
for (i = 0; i < blocksize; i++) {
|
|
ipad[i] ^= 0x36;
|
|
opad[i] ^= 0x5c;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_ahmac_setkey(const char *hash_alg_name,
|
|
const u8 *key, unsigned int keylen,
|
|
void *istate, void *ostate)
|
|
{
|
|
struct ahash_request *req;
|
|
struct crypto_ahash *tfm;
|
|
unsigned int blocksize;
|
|
u8 *ipad = NULL;
|
|
u8 *opad;
|
|
int ret;
|
|
|
|
tfm = crypto_alloc_ahash(hash_alg_name, CRYPTO_ALG_TYPE_AHASH,
|
|
CRYPTO_ALG_TYPE_AHASH_MASK);
|
|
if (IS_ERR(tfm))
|
|
return PTR_ERR(tfm);
|
|
|
|
req = ahash_request_alloc(tfm, GFP_KERNEL);
|
|
if (!req) {
|
|
ret = -ENOMEM;
|
|
goto free_ahash;
|
|
}
|
|
|
|
crypto_ahash_clear_flags(tfm, ~0);
|
|
|
|
blocksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
|
|
|
|
ipad = kzalloc(2 * blocksize, GFP_KERNEL);
|
|
if (!ipad) {
|
|
ret = -ENOMEM;
|
|
goto free_req;
|
|
}
|
|
|
|
opad = ipad + blocksize;
|
|
|
|
ret = mv_cesa_ahmac_pad_init(req, key, keylen, ipad, opad, blocksize);
|
|
if (ret)
|
|
goto free_ipad;
|
|
|
|
ret = mv_cesa_ahmac_iv_state_init(req, ipad, istate, blocksize);
|
|
if (ret)
|
|
goto free_ipad;
|
|
|
|
ret = mv_cesa_ahmac_iv_state_init(req, opad, ostate, blocksize);
|
|
|
|
free_ipad:
|
|
kfree(ipad);
|
|
free_req:
|
|
ahash_request_free(req);
|
|
free_ahash:
|
|
crypto_free_ahash(tfm);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mv_cesa_ahmac_cra_init(struct crypto_tfm *tfm)
|
|
{
|
|
struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(tfm);
|
|
|
|
ctx->base.ops = &mv_cesa_ahash_req_ops;
|
|
|
|
crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
|
|
sizeof(struct mv_cesa_ahash_req));
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_ahmac_md5_init(struct ahash_request *req)
|
|
{
|
|
struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
|
|
struct mv_cesa_op_ctx tmpl = { };
|
|
|
|
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_HMAC_MD5);
|
|
memcpy(tmpl.ctx.hash.iv, ctx->iv, sizeof(ctx->iv));
|
|
|
|
mv_cesa_ahash_init(req, &tmpl, true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_ahmac_md5_setkey(struct crypto_ahash *tfm, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm));
|
|
struct md5_state istate, ostate;
|
|
int ret, i;
|
|
|
|
ret = mv_cesa_ahmac_setkey("mv-md5", key, keylen, &istate, &ostate);
|
|
if (ret)
|
|
return ret;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(istate.hash); i++)
|
|
ctx->iv[i] = be32_to_cpu(istate.hash[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ostate.hash); i++)
|
|
ctx->iv[i + 8] = be32_to_cpu(ostate.hash[i]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_ahmac_md5_digest(struct ahash_request *req)
|
|
{
|
|
int ret;
|
|
|
|
ret = mv_cesa_ahmac_md5_init(req);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return mv_cesa_ahash_finup(req);
|
|
}
|
|
|
|
struct ahash_alg mv_ahmac_md5_alg = {
|
|
.init = mv_cesa_ahmac_md5_init,
|
|
.update = mv_cesa_ahash_update,
|
|
.final = mv_cesa_ahash_final,
|
|
.finup = mv_cesa_ahash_finup,
|
|
.digest = mv_cesa_ahmac_md5_digest,
|
|
.setkey = mv_cesa_ahmac_md5_setkey,
|
|
.export = mv_cesa_md5_export,
|
|
.import = mv_cesa_md5_import,
|
|
.halg = {
|
|
.digestsize = MD5_DIGEST_SIZE,
|
|
.statesize = sizeof(struct md5_state),
|
|
.base = {
|
|
.cra_name = "hmac(md5)",
|
|
.cra_driver_name = "mv-hmac-md5",
|
|
.cra_priority = 300,
|
|
.cra_flags = CRYPTO_ALG_ASYNC |
|
|
CRYPTO_ALG_KERN_DRIVER_ONLY,
|
|
.cra_blocksize = MD5_HMAC_BLOCK_SIZE,
|
|
.cra_ctxsize = sizeof(struct mv_cesa_hmac_ctx),
|
|
.cra_init = mv_cesa_ahmac_cra_init,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
}
|
|
};
|
|
|
|
static int mv_cesa_ahmac_sha1_init(struct ahash_request *req)
|
|
{
|
|
struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
|
|
struct mv_cesa_op_ctx tmpl = { };
|
|
|
|
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_HMAC_SHA1);
|
|
memcpy(tmpl.ctx.hash.iv, ctx->iv, sizeof(ctx->iv));
|
|
|
|
mv_cesa_ahash_init(req, &tmpl, false);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_ahmac_sha1_setkey(struct crypto_ahash *tfm, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm));
|
|
struct sha1_state istate, ostate;
|
|
int ret, i;
|
|
|
|
ret = mv_cesa_ahmac_setkey("mv-sha1", key, keylen, &istate, &ostate);
|
|
if (ret)
|
|
return ret;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(istate.state); i++)
|
|
ctx->iv[i] = be32_to_cpu(istate.state[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ostate.state); i++)
|
|
ctx->iv[i + 8] = be32_to_cpu(ostate.state[i]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_ahmac_sha1_digest(struct ahash_request *req)
|
|
{
|
|
int ret;
|
|
|
|
ret = mv_cesa_ahmac_sha1_init(req);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return mv_cesa_ahash_finup(req);
|
|
}
|
|
|
|
struct ahash_alg mv_ahmac_sha1_alg = {
|
|
.init = mv_cesa_ahmac_sha1_init,
|
|
.update = mv_cesa_ahash_update,
|
|
.final = mv_cesa_ahash_final,
|
|
.finup = mv_cesa_ahash_finup,
|
|
.digest = mv_cesa_ahmac_sha1_digest,
|
|
.setkey = mv_cesa_ahmac_sha1_setkey,
|
|
.export = mv_cesa_sha1_export,
|
|
.import = mv_cesa_sha1_import,
|
|
.halg = {
|
|
.digestsize = SHA1_DIGEST_SIZE,
|
|
.statesize = sizeof(struct sha1_state),
|
|
.base = {
|
|
.cra_name = "hmac(sha1)",
|
|
.cra_driver_name = "mv-hmac-sha1",
|
|
.cra_priority = 300,
|
|
.cra_flags = CRYPTO_ALG_ASYNC |
|
|
CRYPTO_ALG_KERN_DRIVER_ONLY,
|
|
.cra_blocksize = SHA1_BLOCK_SIZE,
|
|
.cra_ctxsize = sizeof(struct mv_cesa_hmac_ctx),
|
|
.cra_init = mv_cesa_ahmac_cra_init,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
}
|
|
};
|
|
|
|
static int mv_cesa_ahmac_sha256_setkey(struct crypto_ahash *tfm, const u8 *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm));
|
|
struct sha256_state istate, ostate;
|
|
int ret, i;
|
|
|
|
ret = mv_cesa_ahmac_setkey("mv-sha256", key, keylen, &istate, &ostate);
|
|
if (ret)
|
|
return ret;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(istate.state); i++)
|
|
ctx->iv[i] = be32_to_cpu(istate.state[i]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ostate.state); i++)
|
|
ctx->iv[i + 8] = be32_to_cpu(ostate.state[i]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_ahmac_sha256_init(struct ahash_request *req)
|
|
{
|
|
struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
|
|
struct mv_cesa_op_ctx tmpl = { };
|
|
|
|
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_HMAC_SHA256);
|
|
memcpy(tmpl.ctx.hash.iv, ctx->iv, sizeof(ctx->iv));
|
|
|
|
mv_cesa_ahash_init(req, &tmpl, false);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv_cesa_ahmac_sha256_digest(struct ahash_request *req)
|
|
{
|
|
int ret;
|
|
|
|
ret = mv_cesa_ahmac_sha256_init(req);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return mv_cesa_ahash_finup(req);
|
|
}
|
|
|
|
struct ahash_alg mv_ahmac_sha256_alg = {
|
|
.init = mv_cesa_ahmac_sha256_init,
|
|
.update = mv_cesa_ahash_update,
|
|
.final = mv_cesa_ahash_final,
|
|
.finup = mv_cesa_ahash_finup,
|
|
.digest = mv_cesa_ahmac_sha256_digest,
|
|
.setkey = mv_cesa_ahmac_sha256_setkey,
|
|
.export = mv_cesa_sha256_export,
|
|
.import = mv_cesa_sha256_import,
|
|
.halg = {
|
|
.digestsize = SHA256_DIGEST_SIZE,
|
|
.statesize = sizeof(struct sha256_state),
|
|
.base = {
|
|
.cra_name = "hmac(sha256)",
|
|
.cra_driver_name = "mv-hmac-sha256",
|
|
.cra_priority = 300,
|
|
.cra_flags = CRYPTO_ALG_ASYNC |
|
|
CRYPTO_ALG_KERN_DRIVER_ONLY,
|
|
.cra_blocksize = SHA256_BLOCK_SIZE,
|
|
.cra_ctxsize = sizeof(struct mv_cesa_hmac_ctx),
|
|
.cra_init = mv_cesa_ahmac_cra_init,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
}
|
|
};
|