diff options
Diffstat (limited to 'drivers/crypto/ccree/cc_hash.c')
| -rw-r--r-- | drivers/crypto/ccree/cc_hash.c | 2295 |
1 files changed, 2295 insertions, 0 deletions
diff --git a/drivers/crypto/ccree/cc_hash.c b/drivers/crypto/ccree/cc_hash.c new file mode 100644 index 000000000000..26bbbc6a4019 --- /dev/null +++ b/drivers/crypto/ccree/cc_hash.c @@ -0,0 +1,2295 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <crypto/algapi.h> +#include <crypto/hash.h> +#include <crypto/md5.h> +#include <crypto/internal/hash.h> + +#include "cc_driver.h" +#include "cc_request_mgr.h" +#include "cc_buffer_mgr.h" +#include "cc_hash.h" +#include "cc_sram_mgr.h" + +#define CC_MAX_HASH_SEQ_LEN 12 +#define CC_MAX_OPAD_KEYS_SIZE CC_MAX_HASH_BLCK_SIZE + +struct cc_hash_handle { + cc_sram_addr_t digest_len_sram_addr; /* const value in SRAM*/ + cc_sram_addr_t larval_digest_sram_addr; /* const value in SRAM */ + struct list_head hash_list; +}; + +static const u32 digest_len_init[] = { + 0x00000040, 0x00000000, 0x00000000, 0x00000000 }; +static const u32 md5_init[] = { + SHA1_H3, SHA1_H2, SHA1_H1, SHA1_H0 }; +static const u32 sha1_init[] = { + SHA1_H4, SHA1_H3, SHA1_H2, SHA1_H1, SHA1_H0 }; +static const u32 sha224_init[] = { + SHA224_H7, SHA224_H6, SHA224_H5, SHA224_H4, + SHA224_H3, SHA224_H2, SHA224_H1, SHA224_H0 }; +static const u32 sha256_init[] = { + SHA256_H7, SHA256_H6, SHA256_H5, SHA256_H4, + SHA256_H3, SHA256_H2, SHA256_H1, SHA256_H0 }; +#if (CC_DEV_SHA_MAX > 256) +static const u32 digest_len_sha512_init[] = { + 0x00000080, 0x00000000, 0x00000000, 0x00000000 }; +static u64 sha384_init[] = { + SHA384_H7, SHA384_H6, SHA384_H5, SHA384_H4, + SHA384_H3, SHA384_H2, SHA384_H1, SHA384_H0 }; +static u64 sha512_init[] = { + SHA512_H7, SHA512_H6, SHA512_H5, SHA512_H4, + SHA512_H3, SHA512_H2, SHA512_H1, SHA512_H0 }; +#endif + +static void cc_setup_xcbc(struct ahash_request *areq, struct cc_hw_desc desc[], + unsigned int *seq_size); + +static void cc_setup_cmac(struct ahash_request *areq, struct cc_hw_desc desc[], + unsigned int *seq_size); + +static const void *cc_larval_digest(struct device *dev, u32 mode); + +struct cc_hash_alg { + struct list_head entry; + int hash_mode; + int hw_mode; + int inter_digestsize; + struct cc_drvdata *drvdata; + struct ahash_alg ahash_alg; +}; + +struct hash_key_req_ctx { + u32 keylen; + dma_addr_t key_dma_addr; +}; + +/* hash per-session context */ +struct cc_hash_ctx { + struct cc_drvdata *drvdata; + /* holds the origin digest; the digest after "setkey" if HMAC,* + * the initial digest if HASH. + */ + u8 digest_buff[CC_MAX_HASH_DIGEST_SIZE] ____cacheline_aligned; + u8 opad_tmp_keys_buff[CC_MAX_OPAD_KEYS_SIZE] ____cacheline_aligned; + + dma_addr_t opad_tmp_keys_dma_addr ____cacheline_aligned; + dma_addr_t digest_buff_dma_addr; + /* use for hmac with key large then mode block size */ + struct hash_key_req_ctx key_params; + int hash_mode; + int hw_mode; + int inter_digestsize; + struct completion setkey_comp; + bool is_hmac; +}; + +static void cc_set_desc(struct ahash_req_ctx *areq_ctx, struct cc_hash_ctx *ctx, + unsigned int flow_mode, struct cc_hw_desc desc[], + bool is_not_last_data, unsigned int *seq_size); + +static void cc_set_endianity(u32 mode, struct cc_hw_desc *desc) +{ + if (mode == DRV_HASH_MD5 || mode == DRV_HASH_SHA384 || + mode == DRV_HASH_SHA512) { + set_bytes_swap(desc, 1); + } else { + set_cipher_config0(desc, HASH_DIGEST_RESULT_LITTLE_ENDIAN); + } +} + +static int cc_map_result(struct device *dev, struct ahash_req_ctx *state, + unsigned int digestsize) +{ + state->digest_result_dma_addr = + dma_map_single(dev, state->digest_result_buff, + digestsize, DMA_BIDIRECTIONAL); + if (dma_mapping_error(dev, state->digest_result_dma_addr)) { + dev_err(dev, "Mapping digest result buffer %u B for DMA failed\n", + digestsize); + return -ENOMEM; + } + dev_dbg(dev, "Mapped digest result buffer %u B at va=%pK to dma=%pad\n", + digestsize, state->digest_result_buff, + &state->digest_result_dma_addr); + + return 0; +} + +static void cc_init_req(struct device *dev, struct ahash_req_ctx *state, + struct cc_hash_ctx *ctx) +{ + bool is_hmac = ctx->is_hmac; + + memset(state, 0, sizeof(*state)); + + if (is_hmac) { + if (ctx->hw_mode != DRV_CIPHER_XCBC_MAC && + ctx->hw_mode != DRV_CIPHER_CMAC) { + dma_sync_single_for_cpu(dev, ctx->digest_buff_dma_addr, + ctx->inter_digestsize, + DMA_BIDIRECTIONAL); + + memcpy(state->digest_buff, ctx->digest_buff, + ctx->inter_digestsize); +#if (CC_DEV_SHA_MAX > 256) + if (ctx->hash_mode == DRV_HASH_SHA512 || + ctx->hash_mode == DRV_HASH_SHA384) + memcpy(state->digest_bytes_len, + digest_len_sha512_init, HASH_LEN_SIZE); + else + memcpy(state->digest_bytes_len, + digest_len_init, HASH_LEN_SIZE); +#else + memcpy(state->digest_bytes_len, digest_len_init, + HASH_LEN_SIZE); +#endif + } + + if (ctx->hash_mode != DRV_HASH_NULL) { + dma_sync_single_for_cpu(dev, + ctx->opad_tmp_keys_dma_addr, + ctx->inter_digestsize, + DMA_BIDIRECTIONAL); + memcpy(state->opad_digest_buff, + ctx->opad_tmp_keys_buff, ctx->inter_digestsize); + } + } else { /*hash*/ + /* Copy the initial digests if hash flow. */ + const void *larval = cc_larval_digest(dev, ctx->hash_mode); + + memcpy(state->digest_buff, larval, ctx->inter_digestsize); + } +} + +static int cc_map_req(struct device *dev, struct ahash_req_ctx *state, + struct cc_hash_ctx *ctx) +{ + bool is_hmac = ctx->is_hmac; + + state->digest_buff_dma_addr = + dma_map_single(dev, state->digest_buff, + ctx->inter_digestsize, DMA_BIDIRECTIONAL); + if (dma_mapping_error(dev, state->digest_buff_dma_addr)) { + dev_err(dev, "Mapping digest len %d B at va=%pK for DMA failed\n", + ctx->inter_digestsize, state->digest_buff); + return -EINVAL; + } + dev_dbg(dev, "Mapped digest %d B at va=%pK to dma=%pad\n", + ctx->inter_digestsize, state->digest_buff, + &state->digest_buff_dma_addr); + + if (ctx->hw_mode != DRV_CIPHER_XCBC_MAC) { + state->digest_bytes_len_dma_addr = + dma_map_single(dev, state->digest_bytes_len, + HASH_LEN_SIZE, DMA_BIDIRECTIONAL); + if (dma_mapping_error(dev, state->digest_bytes_len_dma_addr)) { + dev_err(dev, "Mapping digest len %u B at va=%pK for DMA failed\n", + HASH_LEN_SIZE, state->digest_bytes_len); + goto unmap_digest_buf; + } + dev_dbg(dev, "Mapped digest len %u B at va=%pK to dma=%pad\n", + HASH_LEN_SIZE, state->digest_bytes_len, + &state->digest_bytes_len_dma_addr); + } + + if (is_hmac && ctx->hash_mode != DRV_HASH_NULL) { + state->opad_digest_dma_addr = + dma_map_single(dev, state->opad_digest_buff, + ctx->inter_digestsize, + DMA_BIDIRECTIONAL); + if (dma_mapping_error(dev, state->opad_digest_dma_addr)) { + dev_err(dev, "Mapping opad digest %d B at va=%pK for DMA failed\n", + ctx->inter_digestsize, + state->opad_digest_buff); + goto unmap_digest_len; + } + dev_dbg(dev, "Mapped opad digest %d B at va=%pK to dma=%pad\n", + ctx->inter_digestsize, state->opad_digest_buff, + &state->opad_digest_dma_addr); + } + + return 0; + +unmap_digest_len: + if (state->digest_bytes_len_dma_addr) { + dma_unmap_single(dev, state->digest_bytes_len_dma_addr, + HASH_LEN_SIZE, DMA_BIDIRECTIONAL); + state->digest_bytes_len_dma_addr = 0; + } +unmap_digest_buf: + if (state->digest_buff_dma_addr) { + dma_unmap_single(dev, state->digest_buff_dma_addr, + ctx->inter_digestsize, DMA_BIDIRECTIONAL); + state->digest_buff_dma_addr = 0; + } + + return -EINVAL; +} + +static void cc_unmap_req(struct device *dev, struct ahash_req_ctx *state, + struct cc_hash_ctx *ctx) +{ + if (state->digest_buff_dma_addr) { + dma_unmap_single(dev, state->digest_buff_dma_addr, + ctx->inter_digestsize, DMA_BIDIRECTIONAL); + dev_dbg(dev, "Unmapped digest-buffer: digest_buff_dma_addr=%pad\n", + &state->digest_buff_dma_addr); + state->digest_buff_dma_addr = 0; + } + if (state->digest_bytes_len_dma_addr) { + dma_unmap_single(dev, state->digest_bytes_len_dma_addr, + HASH_LEN_SIZE, DMA_BIDIRECTIONAL); + dev_dbg(dev, "Unmapped digest-bytes-len buffer: digest_bytes_len_dma_addr=%pad\n", + &state->digest_bytes_len_dma_addr); + state->digest_bytes_len_dma_addr = 0; + } + if (state->opad_digest_dma_addr) { + dma_unmap_single(dev, state->opad_digest_dma_addr, + ctx->inter_digestsize, DMA_BIDIRECTIONAL); + dev_dbg(dev, "Unmapped opad-digest: opad_digest_dma_addr=%pad\n", + &state->opad_digest_dma_addr); + state->opad_digest_dma_addr = 0; + } +} + +static void cc_unmap_result(struct device *dev, struct ahash_req_ctx *state, + unsigned int digestsize, u8 *result) +{ + if (state->digest_result_dma_addr) { + dma_unmap_single(dev, state->digest_result_dma_addr, digestsize, + DMA_BIDIRECTIONAL); + dev_dbg(dev, "unmpa digest result buffer va (%pK) pa (%pad) len %u\n", + state->digest_result_buff, + &state->digest_result_dma_addr, digestsize); + memcpy(result, state->digest_result_buff, digestsize); + } + state->digest_result_dma_addr = 0; +} + +static void cc_update_complete(struct device *dev, void *cc_req, int err) +{ + struct ahash_request *req = (struct ahash_request *)cc_req; + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + + dev_dbg(dev, "req=%pK\n", req); + + cc_unmap_hash_request(dev, state, req->src, false); + cc_unmap_req(dev, state, ctx); + req->base.complete(&req->base, err); +} + +static void cc_digest_complete(struct device *dev, void *cc_req, int err) +{ + struct ahash_request *req = (struct ahash_request *)cc_req; + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + u32 digestsize = crypto_ahash_digestsize(tfm); + + dev_dbg(dev, "req=%pK\n", req); + + cc_unmap_hash_request(dev, state, req->src, false); + cc_unmap_result(dev, state, digestsize, req->result); + cc_unmap_req(dev, state, ctx); + req->base.complete(&req->base, err); +} + +static void cc_hash_complete(struct device *dev, void *cc_req, int err) +{ + struct ahash_request *req = (struct ahash_request *)cc_req; + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + u32 digestsize = crypto_ahash_digestsize(tfm); + + dev_dbg(dev, "req=%pK\n", req); + + cc_unmap_hash_request(dev, state, req->src, false); + cc_unmap_result(dev, state, digestsize, req->result); + cc_unmap_req(dev, state, ctx); + req->base.complete(&req->base, err); +} + +static int cc_fin_result(struct cc_hw_desc *desc, struct ahash_request *req, + int idx) +{ + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + u32 digestsize = crypto_ahash_digestsize(tfm); + + /* Get final MAC result */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + /* TODO */ + set_dout_dlli(&desc[idx], state->digest_result_dma_addr, digestsize, + NS_BIT, 1); + set_queue_last_ind(&desc[idx]); + set_flow_mode(&desc[idx], S_HASH_to_DOUT); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE0); + set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED); + cc_set_endianity(ctx->hash_mode, &desc[idx]); + idx++; + + return idx; +} + +static int cc_fin_hmac(struct cc_hw_desc *desc, struct ahash_request *req, + int idx) +{ + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + u32 digestsize = crypto_ahash_digestsize(tfm); + + /* store the hash digest result in the context */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_dout_dlli(&desc[idx], state->digest_buff_dma_addr, digestsize, + NS_BIT, 0); + set_flow_mode(&desc[idx], S_HASH_to_DOUT); + cc_set_endianity(ctx->hash_mode, &desc[idx]); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE0); + idx++; + + /* Loading hash opad xor key state */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_din_type(&desc[idx], DMA_DLLI, state->opad_digest_dma_addr, + ctx->inter_digestsize, NS_BIT); + set_flow_mode(&desc[idx], S_DIN_to_HASH); + set_setup_mode(&desc[idx], SETUP_LOAD_STATE0); + idx++; + + /* Load the hash current length */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_din_sram(&desc[idx], + cc_digest_len_addr(ctx->drvdata, ctx->hash_mode), + HASH_LEN_SIZE); + set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED); + set_flow_mode(&desc[idx], S_DIN_to_HASH); + set_setup_mode(&desc[idx], SETUP_LOAD_KEY0); + idx++; + + /* Memory Barrier: wait for IPAD/OPAD axi write to complete */ + hw_desc_init(&desc[idx]); + set_din_no_dma(&desc[idx], 0, 0xfffff0); + set_dout_no_dma(&desc[idx], 0, 0, 1); + idx++; + + /* Perform HASH update */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr, + digestsize, NS_BIT); + set_flow_mode(&desc[idx], DIN_HASH); + idx++; + + return idx; +} + +static int cc_hash_digest(struct ahash_request *req) +{ + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + u32 digestsize = crypto_ahash_digestsize(tfm); + struct scatterlist *src = req->src; + unsigned int nbytes = req->nbytes; + u8 *result = req->result; + struct device *dev = drvdata_to_dev(ctx->drvdata); + bool is_hmac = ctx->is_hmac; + struct cc_crypto_req cc_req = {}; + struct cc_hw_desc desc[CC_MAX_HASH_SEQ_LEN]; + cc_sram_addr_t larval_digest_addr = + cc_larval_digest_addr(ctx->drvdata, ctx->hash_mode); + int idx = 0; + int rc = 0; + gfp_t flags = cc_gfp_flags(&req->base); + + dev_dbg(dev, "===== %s-digest (%d) ====\n", is_hmac ? "hmac" : "hash", + nbytes); + + cc_init_req(dev, state, ctx); + + if (cc_map_req(dev, state, ctx)) { + dev_err(dev, "map_ahash_source() failed\n"); + return -ENOMEM; + } + + if (cc_map_result(dev, state, digestsize)) { + dev_err(dev, "map_ahash_digest() failed\n"); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + + if (cc_map_hash_request_final(ctx->drvdata, state, src, nbytes, 1, + flags)) { + dev_err(dev, "map_ahash_request_final() failed\n"); + cc_unmap_result(dev, state, digestsize, result); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + + /* Setup request structure */ + cc_req.user_cb = cc_digest_complete; + cc_req.user_arg = req; + + /* If HMAC then load hash IPAD xor key, if HASH then load initial + * digest + */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + if (is_hmac) { + set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr, + ctx->inter_digestsize, NS_BIT); + } else { + set_din_sram(&desc[idx], larval_digest_addr, + ctx->inter_digestsize); + } + set_flow_mode(&desc[idx], S_DIN_to_HASH); + set_setup_mode(&desc[idx], SETUP_LOAD_STATE0); + idx++; + + /* Load the hash current length */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + + if (is_hmac) { + set_din_type(&desc[idx], DMA_DLLI, + state->digest_bytes_len_dma_addr, HASH_LEN_SIZE, + NS_BIT); + } else { + set_din_const(&desc[idx], 0, HASH_LEN_SIZE); + if (nbytes) + set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED); + else + set_cipher_do(&desc[idx], DO_PAD); + } + set_flow_mode(&desc[idx], S_DIN_to_HASH); + set_setup_mode(&desc[idx], SETUP_LOAD_KEY0); + idx++; + + cc_set_desc(state, ctx, DIN_HASH, desc, false, &idx); + + if (is_hmac) { + /* HW last hash block padding (aka. "DO_PAD") */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_dout_dlli(&desc[idx], state->digest_buff_dma_addr, + HASH_LEN_SIZE, NS_BIT, 0); + set_flow_mode(&desc[idx], S_HASH_to_DOUT); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE1); + set_cipher_do(&desc[idx], DO_PAD); + idx++; + + idx = cc_fin_hmac(desc, req, idx); + } + + idx = cc_fin_result(desc, req, idx); + + rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base); + if (rc != -EINPROGRESS && rc != -EBUSY) { + dev_err(dev, "send_request() failed (rc=%d)\n", rc); + cc_unmap_hash_request(dev, state, src, true); + cc_unmap_result(dev, state, digestsize, result); + cc_unmap_req(dev, state, ctx); + } + return rc; +} + +static int cc_restore_hash(struct cc_hw_desc *desc, struct cc_hash_ctx *ctx, + struct ahash_req_ctx *state, unsigned int idx) +{ + /* Restore hash digest */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr, + ctx->inter_digestsize, NS_BIT); + set_flow_mode(&desc[idx], S_DIN_to_HASH); + set_setup_mode(&desc[idx], SETUP_LOAD_STATE0); + idx++; + + /* Restore hash current length */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED); + set_din_type(&desc[idx], DMA_DLLI, state->digest_bytes_len_dma_addr, + HASH_LEN_SIZE, NS_BIT); + set_flow_mode(&desc[idx], S_DIN_to_HASH); + set_setup_mode(&desc[idx], SETUP_LOAD_KEY0); + idx++; + + cc_set_desc(state, ctx, DIN_HASH, desc, false, &idx); + + return idx; +} + +static int cc_hash_update(struct ahash_request *req) +{ + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + unsigned int block_size = crypto_tfm_alg_blocksize(&tfm->base); + struct scatterlist *src = req->src; + unsigned int nbytes = req->nbytes; + struct device *dev = drvdata_to_dev(ctx->drvdata); + struct cc_crypto_req cc_req = {}; + struct cc_hw_desc desc[CC_MAX_HASH_SEQ_LEN]; + u32 idx = 0; + int rc; + gfp_t flags = cc_gfp_flags(&req->base); + + dev_dbg(dev, "===== %s-update (%d) ====\n", ctx->is_hmac ? + "hmac" : "hash", nbytes); + + if (nbytes == 0) { + /* no real updates required */ + return 0; + } + + rc = cc_map_hash_request_update(ctx->drvdata, state, src, nbytes, + block_size, flags); + if (rc) { + if (rc == 1) { + dev_dbg(dev, " data size not require HW update %x\n", + nbytes); + /* No hardware updates are required */ + return 0; + } + dev_err(dev, "map_ahash_request_update() failed\n"); + return -ENOMEM; + } + + if (cc_map_req(dev, state, ctx)) { + dev_err(dev, "map_ahash_source() failed\n"); + cc_unmap_hash_request(dev, state, src, true); + return -EINVAL; + } + + /* Setup request structure */ + cc_req.user_cb = cc_update_complete; + cc_req.user_arg = req; + + idx = cc_restore_hash(desc, ctx, state, idx); + + /* store the hash digest result in context */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_dout_dlli(&desc[idx], state->digest_buff_dma_addr, + ctx->inter_digestsize, NS_BIT, 0); + set_flow_mode(&desc[idx], S_HASH_to_DOUT); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE0); + idx++; + + /* store current hash length in context */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_dout_dlli(&desc[idx], state->digest_bytes_len_dma_addr, + HASH_LEN_SIZE, NS_BIT, 1); + set_queue_last_ind(&desc[idx]); + set_flow_mode(&desc[idx], S_HASH_to_DOUT); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE1); + idx++; + + rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base); + if (rc != -EINPROGRESS && rc != -EBUSY) { + dev_err(dev, "send_request() failed (rc=%d)\n", rc); + cc_unmap_hash_request(dev, state, src, true); + cc_unmap_req(dev, state, ctx); + } + return rc; +} + +static int cc_hash_finup(struct ahash_request *req) +{ + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + u32 digestsize = crypto_ahash_digestsize(tfm); + struct scatterlist *src = req->src; + unsigned int nbytes = req->nbytes; + u8 *result = req->result; + struct device *dev = drvdata_to_dev(ctx->drvdata); + bool is_hmac = ctx->is_hmac; + struct cc_crypto_req cc_req = {}; + struct cc_hw_desc desc[CC_MAX_HASH_SEQ_LEN]; + unsigned int idx = 0; + int rc; + gfp_t flags = cc_gfp_flags(&req->base); + + dev_dbg(dev, "===== %s-finup (%d) ====\n", is_hmac ? "hmac" : "hash", + nbytes); + + if (cc_map_req(dev, state, ctx)) { + dev_err(dev, "map_ahash_source() failed\n"); + return -EINVAL; + } + + if (cc_map_hash_request_final(ctx->drvdata, state, src, nbytes, 1, + flags)) { + dev_err(dev, "map_ahash_request_final() failed\n"); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + if (cc_map_result(dev, state, digestsize)) { + dev_err(dev, "map_ahash_digest() failed\n"); + cc_unmap_hash_request(dev, state, src, true); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + + /* Setup request structure */ + cc_req.user_cb = cc_hash_complete; + cc_req.user_arg = req; + + idx = cc_restore_hash(desc, ctx, state, idx); + + if (is_hmac) + idx = cc_fin_hmac(desc, req, idx); + + idx = cc_fin_result(desc, req, idx); + + rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base); + if (rc != -EINPROGRESS && rc != -EBUSY) { + dev_err(dev, "send_request() failed (rc=%d)\n", rc); + cc_unmap_hash_request(dev, state, src, true); + cc_unmap_result(dev, state, digestsize, result); + cc_unmap_req(dev, state, ctx); + } + return rc; +} + +static int cc_hash_final(struct ahash_request *req) +{ + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + u32 digestsize = crypto_ahash_digestsize(tfm); + struct scatterlist *src = req->src; + unsigned int nbytes = req->nbytes; + u8 *result = req->result; + struct device *dev = drvdata_to_dev(ctx->drvdata); + bool is_hmac = ctx->is_hmac; + struct cc_crypto_req cc_req = {}; + struct cc_hw_desc desc[CC_MAX_HASH_SEQ_LEN]; + unsigned int idx = 0; + int rc; + gfp_t flags = cc_gfp_flags(&req->base); + + dev_dbg(dev, "===== %s-final (%d) ====\n", is_hmac ? "hmac" : "hash", + nbytes); + + if (cc_map_req(dev, state, ctx)) { + dev_err(dev, "map_ahash_source() failed\n"); + return -EINVAL; + } + + if (cc_map_hash_request_final(ctx->drvdata, state, src, nbytes, 0, + flags)) { + dev_err(dev, "map_ahash_request_final() failed\n"); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + + if (cc_map_result(dev, state, digestsize)) { + dev_err(dev, "map_ahash_digest() failed\n"); + cc_unmap_hash_request(dev, state, src, true); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + + /* Setup request structure */ + cc_req.user_cb = cc_hash_complete; + cc_req.user_arg = req; + + idx = cc_restore_hash(desc, ctx, state, idx); + + /* "DO-PAD" must be enabled only when writing current length to HW */ + hw_desc_init(&desc[idx]); + set_cipher_do(&desc[idx], DO_PAD); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_dout_dlli(&desc[idx], state->digest_bytes_len_dma_addr, + HASH_LEN_SIZE, NS_BIT, 0); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE1); + set_flow_mode(&desc[idx], S_HASH_to_DOUT); + idx++; + + if (is_hmac) + idx = cc_fin_hmac(desc, req, idx); + + idx = cc_fin_result(desc, req, idx); + + rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base); + if (rc != -EINPROGRESS && rc != -EBUSY) { + dev_err(dev, "send_request() failed (rc=%d)\n", rc); + cc_unmap_hash_request(dev, state, src, true); + cc_unmap_result(dev, state, digestsize, result); + cc_unmap_req(dev, state, ctx); + } + return rc; +} + +static int cc_hash_init(struct ahash_request *req) +{ + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx->drvdata); + + dev_dbg(dev, "===== init (%d) ====\n", req->nbytes); + + cc_init_req(dev, state, ctx); + + return 0; +} + +static int cc_hash_setkey(struct crypto_ahash *ahash, const u8 *key, + unsigned int keylen) +{ + unsigned int hmac_pad_const[2] = { HMAC_IPAD_CONST, HMAC_OPAD_CONST }; + struct cc_crypto_req cc_req = {}; + struct cc_hash_ctx *ctx = NULL; + int blocksize = 0; + int digestsize = 0; + int i, idx = 0, rc = 0; + struct cc_hw_desc desc[CC_MAX_HASH_SEQ_LEN]; + cc_sram_addr_t larval_addr; + struct device *dev; + + ctx = crypto_ahash_ctx(ahash); + dev = drvdata_to_dev(ctx->drvdata); + dev_dbg(dev, "start keylen: %d", keylen); + + blocksize = crypto_tfm_alg_blocksize(&ahash->base); + digestsize = crypto_ahash_digestsize(ahash); + + larval_addr = cc_larval_digest_addr(ctx->drvdata, ctx->hash_mode); + + /* The keylen value distinguishes HASH in case keylen is ZERO bytes, + * any NON-ZERO value utilizes HMAC flow + */ + ctx->key_params.keylen = keylen; + ctx->key_params.key_dma_addr = 0; + ctx->is_hmac = true; + + if (keylen) { + ctx->key_params.key_dma_addr = + dma_map_single(dev, (void *)key, keylen, DMA_TO_DEVICE); + if (dma_mapping_error(dev, ctx->key_params.key_dma_addr)) { + dev_err(dev, "Mapping key va=0x%p len=%u for DMA failed\n", + key, keylen); + return -ENOMEM; + } + dev_dbg(dev, "mapping key-buffer: key_dma_addr=%pad keylen=%u\n", + &ctx->key_params.key_dma_addr, ctx->key_params.keylen); + + if (keylen > blocksize) { + /* Load hash initial state */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_din_sram(&desc[idx], larval_addr, + ctx->inter_digestsize); + set_flow_mode(&desc[idx], S_DIN_to_HASH); + set_setup_mode(&desc[idx], SETUP_LOAD_STATE0); + idx++; + + /* Load the hash current length*/ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_din_const(&desc[idx], 0, HASH_LEN_SIZE); + set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED); + set_flow_mode(&desc[idx], S_DIN_to_HASH); + set_setup_mode(&desc[idx], SETUP_LOAD_KEY0); + idx++; + + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, + ctx->key_params.key_dma_addr, keylen, + NS_BIT); + set_flow_mode(&desc[idx], DIN_HASH); + idx++; + + /* Get hashed key */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_dout_dlli(&desc[idx], ctx->opad_tmp_keys_dma_addr, + digestsize, NS_BIT, 0); + set_flow_mode(&desc[idx], S_HASH_to_DOUT); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE0); + set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED); + cc_set_endianity(ctx->hash_mode, &desc[idx]); + idx++; + + hw_desc_init(&desc[idx]); + set_din_const(&desc[idx], 0, (blocksize - digestsize)); + set_flow_mode(&desc[idx], BYPASS); + set_dout_dlli(&desc[idx], + (ctx->opad_tmp_keys_dma_addr + + digestsize), + (blocksize - digestsize), NS_BIT, 0); + idx++; + } else { + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, + ctx->key_params.key_dma_addr, keylen, + NS_BIT); + set_flow_mode(&desc[idx], BYPASS); + set_dout_dlli(&desc[idx], ctx->opad_tmp_keys_dma_addr, + keylen, NS_BIT, 0); + idx++; + + if ((blocksize - keylen)) { + hw_desc_init(&desc[idx]); + set_din_const(&desc[idx], 0, + (blocksize - keylen)); + set_flow_mode(&desc[idx], BYPASS); + set_dout_dlli(&desc[idx], + (ctx->opad_tmp_keys_dma_addr + + keylen), (blocksize - keylen), + NS_BIT, 0); + idx++; + } + } + } else { + hw_desc_init(&desc[idx]); + set_din_const(&desc[idx], 0, blocksize); + set_flow_mode(&desc[idx], BYPASS); + set_dout_dlli(&desc[idx], (ctx->opad_tmp_keys_dma_addr), + blocksize, NS_BIT, 0); + idx++; + } + + rc = cc_send_sync_request(ctx->drvdata, &cc_req, desc, idx); + if (rc) { + dev_err(dev, "send_request() failed (rc=%d)\n", rc); + goto out; + } + + /* calc derived HMAC key */ + for (idx = 0, i = 0; i < 2; i++) { + /* Load hash initial state */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_din_sram(&desc[idx], larval_addr, ctx->inter_digestsize); + set_flow_mode(&desc[idx], S_DIN_to_HASH); + set_setup_mode(&desc[idx], SETUP_LOAD_STATE0); + idx++; + + /* Load the hash current length*/ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_din_const(&desc[idx], 0, HASH_LEN_SIZE); + set_flow_mode(&desc[idx], S_DIN_to_HASH); + set_setup_mode(&desc[idx], SETUP_LOAD_KEY0); + idx++; + + /* Prepare ipad key */ + hw_desc_init(&desc[idx]); + set_xor_val(&desc[idx], hmac_pad_const[i]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_flow_mode(&desc[idx], S_DIN_to_HASH); + set_setup_mode(&desc[idx], SETUP_LOAD_STATE1); + idx++; + + /* Perform HASH update */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, ctx->opad_tmp_keys_dma_addr, + blocksize, NS_BIT); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_xor_active(&desc[idx]); + set_flow_mode(&desc[idx], DIN_HASH); + idx++; + + /* Get the IPAD/OPAD xor key (Note, IPAD is the initial digest + * of the first HASH "update" state) + */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + if (i > 0) /* Not first iteration */ + set_dout_dlli(&desc[idx], ctx->opad_tmp_keys_dma_addr, + ctx->inter_digestsize, NS_BIT, 0); + else /* First iteration */ + set_dout_dlli(&desc[idx], ctx->digest_buff_dma_addr, + ctx->inter_digestsize, NS_BIT, 0); + set_flow_mode(&desc[idx], S_HASH_to_DOUT); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE0); + idx++; + } + + rc = cc_send_sync_request(ctx->drvdata, &cc_req, desc, idx); + +out: + if (rc) + crypto_ahash_set_flags(ahash, CRYPTO_TFM_RES_BAD_KEY_LEN); + + if (ctx->key_params.key_dma_addr) { + dma_unmap_single(dev, ctx->key_params.key_dma_addr, + ctx->key_params.keylen, DMA_TO_DEVICE); + dev_dbg(dev, "Unmapped key-buffer: key_dma_addr=%pad keylen=%u\n", + &ctx->key_params.key_dma_addr, ctx->key_params.keylen); + } + return rc; +} + +static int cc_xcbc_setkey(struct crypto_ahash *ahash, + const u8 *key, unsigned int keylen) +{ + struct cc_crypto_req cc_req = {}; + struct cc_hash_ctx *ctx = crypto_ahash_ctx(ahash); + struct device *dev = drvdata_to_dev(ctx->drvdata); + int rc = 0; + unsigned int idx = 0; + struct cc_hw_desc desc[CC_MAX_HASH_SEQ_LEN]; + + dev_dbg(dev, "===== setkey (%d) ====\n", keylen); + + switch (keylen) { + case AES_KEYSIZE_128: + case AES_KEYSIZE_192: + case AES_KEYSIZE_256: + break; + default: + return -EINVAL; + } + + ctx->key_params.keylen = keylen; + + ctx->key_params.key_dma_addr = + dma_map_single(dev, (void *)key, keylen, DMA_TO_DEVICE); + if (dma_mapping_error(dev, ctx->key_params.key_dma_addr)) { + dev_err(dev, "Mapping key va=0x%p len=%u for DMA failed\n", + key, keylen); + return -ENOMEM; + } + dev_dbg(dev, "mapping key-buffer: key_dma_addr=%pad keylen=%u\n", + &ctx->key_params.key_dma_addr, ctx->key_params.keylen); + + ctx->is_hmac = true; + /* 1. Load the AES key */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, ctx->key_params.key_dma_addr, + keylen, NS_BIT); + set_cipher_mode(&desc[idx], DRV_CIPHER_ECB); + set_cipher_config0(&desc[idx], DRV_CRYPTO_DIRECTION_ENCRYPT); + set_key_size_aes(&desc[idx], keylen); + set_flow_mode(&desc[idx], S_DIN_to_AES); + set_setup_mode(&desc[idx], SETUP_LOAD_KEY0); + idx++; + + hw_desc_init(&desc[idx]); + set_din_const(&desc[idx], 0x01010101, CC_AES_128_BIT_KEY_SIZE); + set_flow_mode(&desc[idx], DIN_AES_DOUT); + set_dout_dlli(&desc[idx], + (ctx->opad_tmp_keys_dma_addr + XCBC_MAC_K1_OFFSET), + CC_AES_128_BIT_KEY_SIZE, NS_BIT, 0); + idx++; + + hw_desc_init(&desc[idx]); + set_din_const(&desc[idx], 0x02020202, CC_AES_128_BIT_KEY_SIZE); + set_flow_mode(&desc[idx], DIN_AES_DOUT); + set_dout_dlli(&desc[idx], + (ctx->opad_tmp_keys_dma_addr + XCBC_MAC_K2_OFFSET), + CC_AES_128_BIT_KEY_SIZE, NS_BIT, 0); + idx++; + + hw_desc_init(&desc[idx]); + set_din_const(&desc[idx], 0x03030303, CC_AES_128_BIT_KEY_SIZE); + set_flow_mode(&desc[idx], DIN_AES_DOUT); + set_dout_dlli(&desc[idx], + (ctx->opad_tmp_keys_dma_addr + XCBC_MAC_K3_OFFSET), + CC_AES_128_BIT_KEY_SIZE, NS_BIT, 0); + idx++; + + rc = cc_send_sync_request(ctx->drvdata, &cc_req, desc, idx); + + if (rc) + crypto_ahash_set_flags(ahash, CRYPTO_TFM_RES_BAD_KEY_LEN); + + dma_unmap_single(dev, ctx->key_params.key_dma_addr, + ctx->key_params.keylen, DMA_TO_DEVICE); + dev_dbg(dev, "Unmapped key-buffer: key_dma_addr=%pad keylen=%u\n", + &ctx->key_params.key_dma_addr, ctx->key_params.keylen); + + return rc; +} + +static int cc_cmac_setkey(struct crypto_ahash *ahash, + const u8 *key, unsigned int keylen) +{ + struct cc_hash_ctx *ctx = crypto_ahash_ctx(ahash); + struct device *dev = drvdata_to_dev(ctx->drvdata); + + dev_dbg(dev, "===== setkey (%d) ====\n", keylen); + + ctx->is_hmac = true; + + switch (keylen) { + case AES_KEYSIZE_128: + case AES_KEYSIZE_192: + case AES_KEYSIZE_256: + break; + default: + return -EINVAL; + } + + ctx->key_params.keylen = keylen; + + /* STAT_PHASE_1: Copy key to ctx */ + + dma_sync_single_for_cpu(dev, ctx->opad_tmp_keys_dma_addr, + keylen, DMA_TO_DEVICE); + + memcpy(ctx->opad_tmp_keys_buff, key, keylen); + if (keylen == 24) { + memset(ctx->opad_tmp_keys_buff + 24, 0, + CC_AES_KEY_SIZE_MAX - 24); + } + + dma_sync_single_for_device(dev, ctx->opad_tmp_keys_dma_addr, + keylen, DMA_TO_DEVICE); + + ctx->key_params.keylen = keylen; + + return 0; +} + +static void cc_free_ctx(struct cc_hash_ctx *ctx) +{ + struct device *dev = drvdata_to_dev(ctx->drvdata); + + if (ctx->digest_buff_dma_addr) { + dma_unmap_single(dev, ctx->digest_buff_dma_addr, + sizeof(ctx->digest_buff), DMA_BIDIRECTIONAL); + dev_dbg(dev, "Unmapped digest-buffer: digest_buff_dma_addr=%pad\n", + &ctx->digest_buff_dma_addr); + ctx->digest_buff_dma_addr = 0; + } + if (ctx->opad_tmp_keys_dma_addr) { + dma_unmap_single(dev, ctx->opad_tmp_keys_dma_addr, + sizeof(ctx->opad_tmp_keys_buff), + DMA_BIDIRECTIONAL); + dev_dbg(dev, "Unmapped opad-digest: opad_tmp_keys_dma_addr=%pad\n", + &ctx->opad_tmp_keys_dma_addr); + ctx->opad_tmp_keys_dma_addr = 0; + } + + ctx->key_params.keylen = 0; +} + +static int cc_alloc_ctx(struct cc_hash_ctx *ctx) +{ + struct device *dev = drvdata_to_dev(ctx->drvdata); + + ctx->key_params.keylen = 0; + + ctx->digest_buff_dma_addr = + dma_map_single(dev, (void *)ctx->digest_buff, + sizeof(ctx->digest_buff), DMA_BIDIRECTIONAL); + if (dma_mapping_error(dev, ctx->digest_buff_dma_addr)) { + dev_err(dev, "Mapping digest len %zu B at va=%pK for DMA failed\n", + sizeof(ctx->digest_buff), ctx->digest_buff); + goto fail; + } + dev_dbg(dev, "Mapped digest %zu B at va=%pK to dma=%pad\n", + sizeof(ctx->digest_buff), ctx->digest_buff, + &ctx->digest_buff_dma_addr); + + ctx->opad_tmp_keys_dma_addr = + dma_map_single(dev, (void *)ctx->opad_tmp_keys_buff, + sizeof(ctx->opad_tmp_keys_buff), + DMA_BIDIRECTIONAL); + if (dma_mapping_error(dev, ctx->opad_tmp_keys_dma_addr)) { + dev_err(dev, "Mapping opad digest %zu B at va=%pK for DMA failed\n", + sizeof(ctx->opad_tmp_keys_buff), + ctx->opad_tmp_keys_buff); + goto fail; + } + dev_dbg(dev, "Mapped opad_tmp_keys %zu B at va=%pK to dma=%pad\n", + sizeof(ctx->opad_tmp_keys_buff), ctx->opad_tmp_keys_buff, + &ctx->opad_tmp_keys_dma_addr); + + ctx->is_hmac = false; + return 0; + +fail: + cc_free_ctx(ctx); + return -ENOMEM; +} + +static int cc_cra_init(struct crypto_tfm *tfm) +{ + struct cc_hash_ctx *ctx = crypto_tfm_ctx(tfm); + struct hash_alg_common *hash_alg_common = + container_of(tfm->__crt_alg, struct hash_alg_common, base); + struct ahash_alg *ahash_alg = + container_of(hash_alg_common, struct ahash_alg, halg); + struct cc_hash_alg *cc_alg = + container_of(ahash_alg, struct cc_hash_alg, ahash_alg); + + crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), + sizeof(struct ahash_req_ctx)); + + ctx->hash_mode = cc_alg->hash_mode; + ctx->hw_mode = cc_alg->hw_mode; + ctx->inter_digestsize = cc_alg->inter_digestsize; + ctx->drvdata = cc_alg->drvdata; + + return cc_alloc_ctx(ctx); +} + +static void cc_cra_exit(struct crypto_tfm *tfm) +{ + struct cc_hash_ctx *ctx = crypto_tfm_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx->drvdata); + + dev_dbg(dev, "cc_cra_exit"); + cc_free_ctx(ctx); +} + +static int cc_mac_update(struct ahash_request *req) +{ + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx->drvdata); + unsigned int block_size = crypto_tfm_alg_blocksize(&tfm->base); + struct cc_crypto_req cc_req = {}; + struct cc_hw_desc desc[CC_MAX_HASH_SEQ_LEN]; + int rc; + u32 idx = 0; + gfp_t flags = cc_gfp_flags(&req->base); + + if (req->nbytes == 0) { + /* no real updates required */ + return 0; + } + + state->xcbc_count++; + + rc = cc_map_hash_request_update(ctx->drvdata, state, req->src, + req->nbytes, block_size, flags); + if (rc) { + if (rc == 1) { + dev_dbg(dev, " data size not require HW update %x\n", + req->nbytes); + /* No hardware updates are required */ + return 0; + } + dev_err(dev, "map_ahash_request_update() failed\n"); + return -ENOMEM; + } + + if (cc_map_req(dev, state, ctx)) { + dev_err(dev, "map_ahash_source() failed\n"); + return -EINVAL; + } + + if (ctx->hw_mode == DRV_CIPHER_XCBC_MAC) + cc_setup_xcbc(req, desc, &idx); + else + cc_setup_cmac(req, desc, &idx); + + cc_set_desc(state, ctx, DIN_AES_DOUT, desc, true, &idx); + + /* store the hash digest result in context */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_dout_dlli(&desc[idx], state->digest_buff_dma_addr, + ctx->inter_digestsize, NS_BIT, 1); + set_queue_last_ind(&desc[idx]); + set_flow_mode(&desc[idx], S_AES_to_DOUT); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE0); + idx++; + + /* Setup request structure */ + cc_req.user_cb = (void *)cc_update_complete; + cc_req.user_arg = (void *)req; + + rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base); + if (rc != -EINPROGRESS && rc != -EBUSY) { + dev_err(dev, "send_request() failed (rc=%d)\n", rc); + cc_unmap_hash_request(dev, state, req->src, true); + cc_unmap_req(dev, state, ctx); + } + return rc; +} + +static int cc_mac_final(struct ahash_request *req) +{ + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx->drvdata); + struct cc_crypto_req cc_req = {}; + struct cc_hw_desc desc[CC_MAX_HASH_SEQ_LEN]; + int idx = 0; + int rc = 0; + u32 key_size, key_len; + u32 digestsize = crypto_ahash_digestsize(tfm); + gfp_t flags = cc_gfp_flags(&req->base); + u32 rem_cnt = *cc_hash_buf_cnt(state); + + if (ctx->hw_mode == DRV_CIPHER_XCBC_MAC) { + key_size = CC_AES_128_BIT_KEY_SIZE; + key_len = CC_AES_128_BIT_KEY_SIZE; + } else { + key_size = (ctx->key_params.keylen == 24) ? AES_MAX_KEY_SIZE : + ctx->key_params.keylen; + key_len = ctx->key_params.keylen; + } + + dev_dbg(dev, "===== final xcbc reminder (%d) ====\n", rem_cnt); + + if (cc_map_req(dev, state, ctx)) { + dev_err(dev, "map_ahash_source() failed\n"); + return -EINVAL; + } + + if (cc_map_hash_request_final(ctx->drvdata, state, req->src, + req->nbytes, 0, flags)) { + dev_err(dev, "map_ahash_request_final() failed\n"); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + + if (cc_map_result(dev, state, digestsize)) { + dev_err(dev, "map_ahash_digest() failed\n"); + cc_unmap_hash_request(dev, state, req->src, true); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + + /* Setup request structure */ + cc_req.user_cb = (void *)cc_hash_complete; + cc_req.user_arg = (void *)req; + + if (state->xcbc_count && rem_cnt == 0) { + /* Load key for ECB decryption */ + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], DRV_CIPHER_ECB); + set_cipher_config0(&desc[idx], DRV_CRYPTO_DIRECTION_DECRYPT); + set_din_type(&desc[idx], DMA_DLLI, + (ctx->opad_tmp_keys_dma_addr + XCBC_MAC_K1_OFFSET), + key_size, NS_BIT); + set_key_size_aes(&desc[idx], key_len); + set_flow_mode(&desc[idx], S_DIN_to_AES); + set_setup_mode(&desc[idx], SETUP_LOAD_KEY0); + idx++; + + /* Initiate decryption of block state to previous + * block_state-XOR-M[n] + */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr, + CC_AES_BLOCK_SIZE, NS_BIT); + set_dout_dlli(&desc[idx], state->digest_buff_dma_addr, + CC_AES_BLOCK_SIZE, NS_BIT, 0); + set_flow_mode(&desc[idx], DIN_AES_DOUT); + idx++; + + /* Memory Barrier: wait for axi write to complete */ + hw_desc_init(&desc[idx]); + set_din_no_dma(&desc[idx], 0, 0xfffff0); + set_dout_no_dma(&desc[idx], 0, 0, 1); + idx++; + } + + if (ctx->hw_mode == DRV_CIPHER_XCBC_MAC) + cc_setup_xcbc(req, desc, &idx); + else + cc_setup_cmac(req, desc, &idx); + + if (state->xcbc_count == 0) { + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_key_size_aes(&desc[idx], key_len); + set_cmac_size0_mode(&desc[idx]); + set_flow_mode(&desc[idx], S_DIN_to_AES); + idx++; + } else if (rem_cnt > 0) { + cc_set_desc(state, ctx, DIN_AES_DOUT, desc, false, &idx); + } else { + hw_desc_init(&desc[idx]); + set_din_const(&desc[idx], 0x00, CC_AES_BLOCK_SIZE); + set_flow_mode(&desc[idx], DIN_AES_DOUT); + idx++; + } + + /* Get final MAC result */ + hw_desc_init(&desc[idx]); + /* TODO */ + set_dout_dlli(&desc[idx], state->digest_result_dma_addr, + digestsize, NS_BIT, 1); + set_queue_last_ind(&desc[idx]); + set_flow_mode(&desc[idx], S_AES_to_DOUT); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE0); + set_cipher_mode(&desc[idx], ctx->hw_mode); + idx++; + + rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base); + if (rc != -EINPROGRESS && rc != -EBUSY) { + dev_err(dev, "send_request() failed (rc=%d)\n", rc); + cc_unmap_hash_request(dev, state, req->src, true); + cc_unmap_result(dev, state, digestsize, req->result); + cc_unmap_req(dev, state, ctx); + } + return rc; +} + +static int cc_mac_finup(struct ahash_request *req) +{ + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx->drvdata); + struct cc_crypto_req cc_req = {}; + struct cc_hw_desc desc[CC_MAX_HASH_SEQ_LEN]; + int idx = 0; + int rc = 0; + u32 key_len = 0; + u32 digestsize = crypto_ahash_digestsize(tfm); + gfp_t flags = cc_gfp_flags(&req->base); + + dev_dbg(dev, "===== finup xcbc(%d) ====\n", req->nbytes); + if (state->xcbc_count > 0 && req->nbytes == 0) { + dev_dbg(dev, "No data to update. Call to fdx_mac_final\n"); + return cc_mac_final(req); + } + + if (cc_map_req(dev, state, ctx)) { + dev_err(dev, "map_ahash_source() failed\n"); + return -EINVAL; + } + + if (cc_map_hash_request_final(ctx->drvdata, state, req->src, + req->nbytes, 1, flags)) { + dev_err(dev, "map_ahash_request_final() failed\n"); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + if (cc_map_result(dev, state, digestsize)) { + dev_err(dev, "map_ahash_digest() failed\n"); + cc_unmap_hash_request(dev, state, req->src, true); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + + /* Setup request structure */ + cc_req.user_cb = (void *)cc_hash_complete; + cc_req.user_arg = (void *)req; + + if (ctx->hw_mode == DRV_CIPHER_XCBC_MAC) { + key_len = CC_AES_128_BIT_KEY_SIZE; + cc_setup_xcbc(req, desc, &idx); + } else { + key_len = ctx->key_params.keylen; + cc_setup_cmac(req, desc, &idx); + } + + if (req->nbytes == 0) { + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_key_size_aes(&desc[idx], key_len); + set_cmac_size0_mode(&desc[idx]); + set_flow_mode(&desc[idx], S_DIN_to_AES); + idx++; + } else { + cc_set_desc(state, ctx, DIN_AES_DOUT, desc, false, &idx); + } + + /* Get final MAC result */ + hw_desc_init(&desc[idx]); + /* TODO */ + set_dout_dlli(&desc[idx], state->digest_result_dma_addr, + digestsize, NS_BIT, 1); + set_queue_last_ind(&desc[idx]); + set_flow_mode(&desc[idx], S_AES_to_DOUT); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE0); + set_cipher_mode(&desc[idx], ctx->hw_mode); + idx++; + + rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base); + if (rc != -EINPROGRESS && rc != -EBUSY) { + dev_err(dev, "send_request() failed (rc=%d)\n", rc); + cc_unmap_hash_request(dev, state, req->src, true); + cc_unmap_result(dev, state, digestsize, req->result); + cc_unmap_req(dev, state, ctx); + } + return rc; +} + +static int cc_mac_digest(struct ahash_request *req) +{ + struct ahash_req_ctx *state = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx->drvdata); + u32 digestsize = crypto_ahash_digestsize(tfm); + struct cc_crypto_req cc_req = {}; + struct cc_hw_desc desc[CC_MAX_HASH_SEQ_LEN]; + u32 key_len; + unsigned int idx = 0; + int rc; + gfp_t flags = cc_gfp_flags(&req->base); + + dev_dbg(dev, "===== -digest mac (%d) ====\n", req->nbytes); + + cc_init_req(dev, state, ctx); + + if (cc_map_req(dev, state, ctx)) { + dev_err(dev, "map_ahash_source() failed\n"); + return -ENOMEM; + } + if (cc_map_result(dev, state, digestsize)) { + dev_err(dev, "map_ahash_digest() failed\n"); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + + if (cc_map_hash_request_final(ctx->drvdata, state, req->src, + req->nbytes, 1, flags)) { + dev_err(dev, "map_ahash_request_final() failed\n"); + cc_unmap_req(dev, state, ctx); + return -ENOMEM; + } + + /* Setup request structure */ + cc_req.user_cb = (void *)cc_digest_complete; + cc_req.user_arg = (void *)req; + + if (ctx->hw_mode == DRV_CIPHER_XCBC_MAC) { + key_len = CC_AES_128_BIT_KEY_SIZE; + cc_setup_xcbc(req, desc, &idx); + } else { + key_len = ctx->key_params.keylen; + cc_setup_cmac(req, desc, &idx); + } + + if (req->nbytes == 0) { + hw_desc_init(&desc[idx]); + set_cipher_mode(&desc[idx], ctx->hw_mode); + set_key_size_aes(&desc[idx], key_len); + set_cmac_size0_mode(&desc[idx]); + set_flow_mode(&desc[idx], S_DIN_to_AES); + idx++; + } else { + cc_set_desc(state, ctx, DIN_AES_DOUT, desc, false, &idx); + } + + /* Get final MAC result */ + hw_desc_init(&desc[idx]); + set_dout_dlli(&desc[idx], state->digest_result_dma_addr, + CC_AES_BLOCK_SIZE, NS_BIT, 1); + set_queue_last_ind(&desc[idx]); + set_flow_mode(&desc[idx], S_AES_to_DOUT); + set_setup_mode(&desc[idx], SETUP_WRITE_STATE0); + set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT); + set_cipher_mode(&desc[idx], ctx->hw_mode); + idx++; + + rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base); + if (rc != -EINPROGRESS && rc != -EBUSY) { + dev_err(dev, "send_request() failed (rc=%d)\n", rc); + cc_unmap_hash_request(dev, state, req->src, true); + cc_unmap_result(dev, state, digestsize, req->result); + cc_unmap_req(dev, state, ctx); + } + return rc; +} + +static int cc_hash_export(struct ahash_request *req, void *out) +{ + struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(ahash); + struct ahash_req_ctx *state = ahash_request_ctx(req); + u8 *curr_buff = cc_hash_buf(state); + u32 curr_buff_cnt = *cc_hash_buf_cnt(state); + const u32 tmp = CC_EXPORT_MAGIC; + + memcpy(out, &tmp, sizeof(u32)); + out += sizeof(u32); + + memcpy(out, state->digest_buff, ctx->inter_digestsize); + out += ctx->inter_digestsize; + + memcpy(out, state->digest_bytes_len, HASH_LEN_SIZE); + out += HASH_LEN_SIZE; + + memcpy(out, &curr_buff_cnt, sizeof(u32)); + out += sizeof(u32); + + memcpy(out, curr_buff, curr_buff_cnt); + + return 0; +} + +static int cc_hash_import(struct ahash_request *req, const void *in) +{ + struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(ahash); + struct device *dev = drvdata_to_dev(ctx->drvdata); + struct ahash_req_ctx *state = ahash_request_ctx(req); + u32 tmp; + + memcpy(&tmp, in, sizeof(u32)); + if (tmp != CC_EXPORT_MAGIC) + return -EINVAL; + in += sizeof(u32); + + cc_init_req(dev, state, ctx); + + memcpy(state->digest_buff, in, ctx->inter_digestsize); + in += ctx->inter_digestsize; + + memcpy(state->digest_bytes_len, in, HASH_LEN_SIZE); + in += HASH_LEN_SIZE; + + /* Sanity check the data as much as possible */ + memcpy(&tmp, in, sizeof(u32)); + if (tmp > CC_MAX_HASH_BLCK_SIZE) + return -EINVAL; + in += sizeof(u32); + + state->buf_cnt[0] = tmp; + memcpy(state->buffers[0], in, tmp); + + return 0; +} + +struct cc_hash_template { + char name[CRYPTO_MAX_ALG_NAME]; + char driver_name[CRYPTO_MAX_ALG_NAME]; + char mac_name[CRYPTO_MAX_ALG_NAME]; + char mac_driver_name[CRYPTO_MAX_ALG_NAME]; + unsigned int blocksize; + bool synchronize; + struct ahash_alg template_ahash; + int hash_mode; + int hw_mode; + int inter_digestsize; + struct cc_drvdata *drvdata; +}; + +#define CC_STATE_SIZE(_x) \ + ((_x) + HASH_LEN_SIZE + CC_MAX_HASH_BLCK_SIZE + (2 * sizeof(u32))) + +/* hash descriptors */ +static struct cc_hash_template driver_hash[] = { + //Asynchronize hash template + { + .name = "sha1", + .driver_name = "sha1-ccree", + .mac_name = "hmac(sha1)", + .mac_driver_name = "hmac-sha1-ccree", + .blocksize = SHA1_BLOCK_SIZE, + .synchronize = false, + .template_ahash = { + .init = cc_hash_init, + .update = cc_hash_update, + .final = cc_hash_final, + .finup = cc_hash_finup, + .digest = cc_hash_digest, + .export = cc_hash_export, + .import = cc_hash_import, + .setkey = cc_hash_setkey, + .halg = { + .digestsize = SHA1_DIGEST_SIZE, + .statesize = CC_STATE_SIZE(SHA1_DIGEST_SIZE), + }, + }, + .hash_mode = DRV_HASH_SHA1, + .hw_mode = DRV_HASH_HW_SHA1, + .inter_digestsize = SHA1_DIGEST_SIZE, + }, + { + .name = "sha256", + .driver_name = "sha256-ccree", + .mac_name = "hmac(sha256)", + .mac_driver_name = "hmac-sha256-ccree", + .blocksize = SHA256_BLOCK_SIZE, + .template_ahash = { + .init = cc_hash_init, + .update = cc_hash_update, + .final = cc_hash_final, + .finup = cc_hash_finup, + .digest = cc_hash_digest, + .export = cc_hash_export, + .import = cc_hash_import, + .setkey = cc_hash_setkey, + .halg = { + .digestsize = SHA256_DIGEST_SIZE, + .statesize = CC_STATE_SIZE(SHA256_DIGEST_SIZE) + }, + }, + .hash_mode = DRV_HASH_SHA256, + .hw_mode = DRV_HASH_HW_SHA256, + .inter_digestsize = SHA256_DIGEST_SIZE, + }, + { + .name = "sha224", + .driver_name = "sha224-ccree", + .mac_name = "hmac(sha224)", + .mac_driver_name = "hmac-sha224-ccree", + .blocksize = SHA224_BLOCK_SIZE, + .template_ahash = { + .init = cc_hash_init, + .update = cc_hash_update, + .final = cc_hash_final, + .finup = cc_hash_finup, + .digest = cc_hash_digest, + .export = cc_hash_export, + .import = cc_hash_import, + .setkey = cc_hash_setkey, + .halg = { + .digestsize = SHA224_DIGEST_SIZE, + .statesize = CC_STATE_SIZE(SHA224_DIGEST_SIZE), + }, + }, + .hash_mode = DRV_HASH_SHA224, + .hw_mode = DRV_HASH_HW_SHA256, + .inter_digestsize = SHA256_DIGEST_SIZE, + }, +#if (CC_DEV_SHA_MAX > 256) + { + .name = "sha384", + .driver_name = "sha384-ccree", + .mac_name = "hmac(sha384)", + .mac_driver_name = "hmac-sha384-ccree", + .blocksize = SHA384_BLOCK_SIZE, + .template_ahash = { + .init = cc_hash_init, + .update = cc_hash_update, + .final = cc_hash_final, + .finup = cc_hash_finup, + .digest = cc_hash_digest, + .export = cc_hash_export, + .import = cc_hash_import, + .setkey = cc_hash_setkey, + .halg = { + .digestsize = SHA384_DIGEST_SIZE, + .statesize = CC_STATE_SIZE(SHA384_DIGEST_SIZE), + }, + }, + .hash_mode = DRV_HASH_SHA384, + .hw_mode = DRV_HASH_HW_SHA512, + .inter_digestsize = SHA512_DIGEST_SIZE, + }, + { + .name = "sha512", + .driver_name = "sha512-ccree", + .mac_name = "hmac(sha512)", + .mac_driver_name = "hmac-sha512-ccree", + .blocksize = SHA512_BLOCK_SIZE, + .template_ahash = { + .init = cc_hash_init, + .update = cc_hash_update, + .final = cc_hash_final, + .finup = cc_hash_finup, + .digest = cc_hash_digest, + .export = cc_hash_export, + .import = cc_hash_import, + .setkey = cc_hash_setkey, + .halg = { + .digestsize = SHA512_DIGEST_SIZE, + .statesize = CC_STATE_SIZE(SHA512_DIGEST_SIZE), + }, + }, + .hash_mode = DRV_HASH_SHA512, + .hw_mode = DRV_HASH_HW_SHA512, + .inter_digestsize = SHA512_DIGEST_SIZE, + }, +#endif + { + .name = "md5", + .driver_name = "md5-ccree", + .mac_name = "hmac(md5)", + .mac_driver_name = "hmac-md5-ccree", + .blocksize = MD5_HMAC_BLOCK_SIZE, + .template_ahash = { + .init = cc_hash_init, + .update = cc_hash_update, + .final = cc_hash_final, + .finup = cc_hash_finup, + .digest = cc_hash_digest, + .export = cc_hash_export, + .import = cc_hash_import, + .setkey = cc_hash_setkey, + .halg = { + .digestsize = MD5_DIGEST_SIZE, + .statesize = CC_STATE_SIZE(MD5_DIGEST_SIZE), + }, + }, + .hash_mode = DRV_HASH_MD5, + .hw_mode = DRV_HASH_HW_MD5, + .inter_digestsize = MD5_DIGEST_SIZE, + }, + { + .mac_name = "xcbc(aes)", + .mac_driver_name = "xcbc-aes-ccree", + .blocksize = AES_BLOCK_SIZE, + .template_ahash = { + .init = cc_hash_init, + .update = cc_mac_update, + .final = cc_mac_final, + .finup = cc_mac_finup, + .digest = cc_mac_digest, + .setkey = cc_xcbc_setkey, + .export = cc_hash_export, + .import = cc_hash_import, + .halg = { + .digestsize = AES_BLOCK_SIZE, + .statesize = CC_STATE_SIZE(AES_BLOCK_SIZE), + }, + }, + .hash_mode = DRV_HASH_NULL, + .hw_mode = DRV_CIPHER_XCBC_MAC, + .inter_digestsize = AES_BLOCK_SIZE, + }, + { + .mac_name = "cmac(aes)", + .mac_driver_name = "cmac-aes-ccree", + .blocksize = AES_BLOCK_SIZE, + .template_ahash = { + .init = cc_hash_init, + .update = cc_mac_update, + .final = cc_mac_final, + .finup = cc_mac_finup, + .digest = cc_mac_digest, + .setkey = cc_cmac_setkey, + .export = cc_hash_export, + .import = cc_hash_import, + .halg = { + .digestsize = AES_BLOCK_SIZE, + .statesize = CC_STATE_SIZE(AES_BLOCK_SIZE), + }, + }, + .hash_mode = DRV_HASH_NULL, + .hw_mode = DRV_CIPHER_CMAC, + .inter_digestsize = AES_BLOCK_SIZE, + }, +}; + +static struct cc_hash_alg *cc_alloc_hash_alg(struct cc_hash_template *template, + struct device *dev, bool keyed) +{ + struct cc_hash_alg *t_crypto_alg; + struct crypto_alg *alg; + struct ahash_alg *halg; + + t_crypto_alg = kzalloc(sizeof(*t_crypto_alg), GFP_KERNEL); + if (!t_crypto_alg) + return ERR_PTR(-ENOMEM); + + t_crypto_alg->ahash_alg = template->template_ahash; + halg = &t_crypto_alg->ahash_alg; + alg = &halg->halg.base; + + if (keyed) { + snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", + template->mac_name); + snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", + template->mac_driver_name); + } else { + halg->setkey = NULL; + snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", + template->name); + snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", + template->driver_name); + } + alg->cra_module = THIS_MODULE; + alg->cra_ctxsize = sizeof(struct cc_hash_ctx); + alg->cra_priority = CC_CRA_PRIO; + alg->cra_blocksize = template->blocksize; + alg->cra_alignmask = 0; + alg->cra_exit = cc_cra_exit; + + alg->cra_init = cc_cra_init; + alg->cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_KERN_DRIVER_ONLY; + alg->cra_type = &crypto_ahash_type; + + t_crypto_alg->hash_mode = template->hash_mode; + t_crypto_alg->hw_mode = template->hw_mode; + t_crypto_alg->inter_digestsize = template->inter_digestsize; + + return t_crypto_alg; +} + +int cc_init_hash_sram(struct cc_drvdata *drvdata) +{ + struct cc_hash_handle *hash_handle = drvdata->hash_handle; + cc_sram_addr_t sram_buff_ofs = hash_handle->digest_len_sram_addr; + unsigned int larval_seq_len = 0; + struct cc_hw_desc larval_seq[CC_DIGEST_SIZE_MAX / sizeof(u32)]; + int rc = 0; + + /* Copy-to-sram digest-len */ + cc_set_sram_desc(digest_len_init, sram_buff_ofs, + ARRAY_SIZE(digest_len_init), larval_seq, + &larval_seq_len); + rc = send_request_init(drvdata, larval_seq, larval_seq_len); + if (rc) + goto init_digest_const_err; + + sram_buff_ofs += sizeof(digest_len_init); + larval_seq_len = 0; + +#if (CC_DEV_SHA_MAX > 256) + /* Copy-to-sram digest-len for sha384/512 */ + cc_set_sram_desc(digest_len_sha512_init, sram_buff_ofs, + ARRAY_SIZE(digest_len_sha512_init), + larval_seq, &larval_seq_len); + rc = send_request_init(drvdata, larval_seq, larval_seq_len); + if (rc) + goto init_digest_const_err; + + sram_buff_ofs += sizeof(digest_len_sha512_init); + larval_seq_len = 0; +#endif + + /* The initial digests offset */ + hash_handle->larval_digest_sram_addr = sram_buff_ofs; + + /* Copy-to-sram initial SHA* digests */ + cc_set_sram_desc(md5_init, sram_buff_ofs, ARRAY_SIZE(md5_init), + larval_seq, &larval_seq_len); + rc = send_request_init(drvdata, larval_seq, larval_seq_len); + if (rc) + goto init_digest_const_err; + sram_buff_ofs += sizeof(md5_init); + larval_seq_len = 0; + + cc_set_sram_desc(sha1_init, sram_buff_ofs, + ARRAY_SIZE(sha1_init), larval_seq, + &larval_seq_len); + rc = send_request_init(drvdata, larval_seq, larval_seq_len); + if (rc) + goto init_digest_const_err; + sram_buff_ofs += sizeof(sha1_init); + larval_seq_len = 0; + + cc_set_sram_desc(sha224_init, sram_buff_ofs, + ARRAY_SIZE(sha224_init), larval_seq, + &larval_seq_len); + rc = send_request_init(drvdata, larval_seq, larval_seq_len); + if (rc) + goto init_digest_const_err; + sram_buff_ofs += sizeof(sha224_init); + larval_seq_len = 0; + + cc_set_sram_desc(sha256_init, sram_buff_ofs, + ARRAY_SIZE(sha256_init), larval_seq, + &larval_seq_len); + rc = send_request_init(drvdata, larval_seq, larval_seq_len); + if (rc) + goto init_digest_const_err; + sram_buff_ofs += sizeof(sha256_init); + larval_seq_len = 0; + +#if (CC_DEV_SHA_MAX > 256) + cc_set_sram_desc((u32 *)sha384_init, sram_buff_ofs, + (ARRAY_SIZE(sha384_init) * 2), larval_seq, + &larval_seq_len); + rc = send_request_init(drvdata, larval_seq, larval_seq_len); + if (rc) + goto init_digest_const_err; + sram_buff_ofs += sizeof(sha384_init); + larval_seq_len = 0; + + cc_set_sram_desc((u32 *)sha512_init, sram_buff_ofs, + (ARRAY_SIZE(sha512_init) * 2), larval_seq, + &larval_seq_len); + rc = send_request_init(drvdata, larval_seq, larval_seq_len); + if (rc) + goto init_digest_const_err; +#endif + +init_digest_const_err: + return rc; +} + +static void __init cc_swap_dwords(u32 *buf, unsigned long size) +{ + int i; + u32 tmp; + + for (i = 0; i < size; i += 2) { + tmp = buf[i]; + buf[i] = buf[i + 1]; + buf[i + 1] = tmp; + } +} + +/* + * Due to the way the HW works we need to swap every + * double word in the SHA384 and SHA512 larval hashes + */ +void __init cc_hash_global_init(void) +{ + cc_swap_dwords((u32 *)&sha384_init, (ARRAY_SIZE(sha384_init) * 2)); + cc_swap_dwords((u32 *)&sha512_init, (ARRAY_SIZE(sha512_init) * 2)); +} + +int cc_hash_alloc(struct cc_drvdata *drvdata) +{ + struct cc_hash_handle *hash_handle; + cc_sram_addr_t sram_buff; + u32 sram_size_to_alloc; + struct device *dev = drvdata_to_dev(drvdata); + int rc = 0; + int alg; + + hash_handle = kzalloc(sizeof(*hash_handle), GFP_KERNEL); + if (!hash_handle) + return -ENOMEM; + + INIT_LIST_HEAD(&hash_handle->hash_list); + drvdata->hash_handle = hash_handle; + + sram_size_to_alloc = sizeof(digest_len_init) + +#if (CC_DEV_SHA_MAX > 256) + sizeof(digest_len_sha512_init) + + sizeof(sha384_init) + + sizeof(sha512_init) + +#endif + sizeof(md5_init) + + sizeof(sha1_init) + + sizeof(sha224_init) + + sizeof(sha256_init); + + sram_buff = cc_sram_alloc(drvdata, sram_size_to_alloc); + if (sram_buff == NULL_SRAM_ADDR) { + dev_err(dev, "SRAM pool exhausted\n"); + rc = -ENOMEM; + goto fail; + } + + /* The initial digest-len offset */ + hash_handle->digest_len_sram_addr = sram_buff; + + /*must be set before the alg registration as it is being used there*/ + rc = cc_init_hash_sram(drvdata); + if (rc) { + dev_err(dev, "Init digest CONST failed (rc=%d)\n", rc); + goto fail; + } + + /* ahash registration */ + for (alg = 0; alg < ARRAY_SIZE(driver_hash); alg++) { + struct cc_hash_alg *t_alg; + int hw_mode = driver_hash[alg].hw_mode; + + /* register hmac version */ + t_alg = cc_alloc_hash_alg(&driver_hash[alg], dev, true); + if (IS_ERR(t_alg)) { + rc = PTR_ERR(t_alg); + dev_err(dev, "%s alg allocation failed\n", + driver_hash[alg].driver_name); + goto fail; + } + t_alg->drvdata = drvdata; + + rc = crypto_register_ahash(&t_alg->ahash_alg); + if (rc) { + dev_err(dev, "%s alg registration failed\n", + driver_hash[alg].driver_name); + kfree(t_alg); + goto fail; + } else { + list_add_tail(&t_alg->entry, &hash_handle->hash_list); + } + + if (hw_mode == DRV_CIPHER_XCBC_MAC || + hw_mode == DRV_CIPHER_CMAC) + continue; + + /* register hash version */ + t_alg = cc_alloc_hash_alg(&driver_hash[alg], dev, false); + if (IS_ERR(t_alg)) { + rc = PTR_ERR(t_alg); + dev_err(dev, "%s alg allocation failed\n", + driver_hash[alg].driver_name); + goto fail; + } + t_alg->drvdata = drvdata; + + rc = crypto_register_ahash(&t_alg->ahash_alg); + if (rc) { + dev_err(dev, "%s alg registration failed\n", + driver_hash[alg].driver_name); + kfree(t_alg); + goto fail; + } else { + list_add_tail(&t_alg->entry, &hash_handle->hash_list); + } + } + + return 0; + +fail: + kfree(drvdata->hash_handle); + drvdata->hash_handle = NULL; + return rc; +} + +int cc_hash_free(struct cc_drvdata *drvdata) +{ + struct cc_hash_alg *t_hash_alg, *hash_n; + struct cc_hash_handle *hash_handle = drvdata->hash_handle; + + if (hash_handle) { + list_for_each_entry_safe(t_hash_alg, hash_n, + &hash_handle->hash_list, entry) { + crypto_unregister_ahash(&t_hash_alg->ahash_alg); + list_del(&t_hash_alg->entry); + kfree(t_hash_alg); + } + + kfree(hash_handle); + drvdata->hash_handle = NULL; + } + return 0; +} + +static void cc_setup_xcbc(struct ahash_request *areq, struct cc_hw_desc desc[], + unsigned int *seq_size) +{ + unsigned int idx = *seq_size; + struct ahash_req_ctx *state = ahash_request_ctx(areq); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + + /* Setup XCBC MAC K1 */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, (ctx->opad_tmp_keys_dma_addr + + XCBC_MAC_K1_OFFSET), + CC_AES_128_BIT_KEY_SIZE, NS_BIT); + set_setup_mode(&desc[idx], SETUP_LOAD_KEY0); + set_cipher_mode(&desc[idx], DRV_CIPHER_XCBC_MAC); + set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT); + set_key_size_aes(&desc[idx], CC_AES_128_BIT_KEY_SIZE); + set_flow_mode(&desc[idx], S_DIN_to_AES); + idx++; + + /* Setup XCBC MAC K2 */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, + (ctx->opad_tmp_keys_dma_addr + XCBC_MAC_K2_OFFSET), + CC_AES_128_BIT_KEY_SIZE, NS_BIT); + set_setup_mode(&desc[idx], SETUP_LOAD_STATE1); + set_cipher_mode(&desc[idx], DRV_CIPHER_XCBC_MAC); + set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT); + set_key_size_aes(&desc[idx], CC_AES_128_BIT_KEY_SIZE); + set_flow_mode(&desc[idx], S_DIN_to_AES); + idx++; + + /* Setup XCBC MAC K3 */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, + (ctx->opad_tmp_keys_dma_addr + XCBC_MAC_K3_OFFSET), + CC_AES_128_BIT_KEY_SIZE, NS_BIT); + set_setup_mode(&desc[idx], SETUP_LOAD_STATE2); + set_cipher_mode(&desc[idx], DRV_CIPHER_XCBC_MAC); + set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT); + set_key_size_aes(&desc[idx], CC_AES_128_BIT_KEY_SIZE); + set_flow_mode(&desc[idx], S_DIN_to_AES); + idx++; + + /* Loading MAC state */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr, + CC_AES_BLOCK_SIZE, NS_BIT); + set_setup_mode(&desc[idx], SETUP_LOAD_STATE0); + set_cipher_mode(&desc[idx], DRV_CIPHER_XCBC_MAC); + set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT); + set_key_size_aes(&desc[idx], CC_AES_128_BIT_KEY_SIZE); + set_flow_mode(&desc[idx], S_DIN_to_AES); + idx++; + *seq_size = idx; +} + +static void cc_setup_cmac(struct ahash_request *areq, struct cc_hw_desc desc[], + unsigned int *seq_size) +{ + unsigned int idx = *seq_size; + struct ahash_req_ctx *state = ahash_request_ctx(areq); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); + struct cc_hash_ctx *ctx = crypto_ahash_ctx(tfm); + + /* Setup CMAC Key */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, ctx->opad_tmp_keys_dma_addr, + ((ctx->key_params.keylen == 24) ? AES_MAX_KEY_SIZE : + ctx->key_params.keylen), NS_BIT); + set_setup_mode(&desc[idx], SETUP_LOAD_KEY0); + set_cipher_mode(&desc[idx], DRV_CIPHER_CMAC); + set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT); + set_key_size_aes(&desc[idx], ctx->key_params.keylen); + set_flow_mode(&desc[idx], S_DIN_to_AES); + idx++; + + /* Load MAC state */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, state->digest_buff_dma_addr, + CC_AES_BLOCK_SIZE, NS_BIT); + set_setup_mode(&desc[idx], SETUP_LOAD_STATE0); + set_cipher_mode(&desc[idx], DRV_CIPHER_CMAC); + set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT); + set_key_size_aes(&desc[idx], ctx->key_params.keylen); + set_flow_mode(&desc[idx], S_DIN_to_AES); + idx++; + *seq_size = idx; +} + +static void cc_set_desc(struct ahash_req_ctx *areq_ctx, + struct cc_hash_ctx *ctx, unsigned int flow_mode, + struct cc_hw_desc desc[], bool is_not_last_data, + unsigned int *seq_size) +{ + unsigned int idx = *seq_size; + struct device *dev = drvdata_to_dev(ctx->drvdata); + + if (areq_ctx->data_dma_buf_type == CC_DMA_BUF_DLLI) { + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, + sg_dma_address(areq_ctx->curr_sg), + areq_ctx->curr_sg->length, NS_BIT); + set_flow_mode(&desc[idx], flow_mode); + idx++; + } else { + if (areq_ctx->data_dma_buf_type == CC_DMA_BUF_NULL) { + dev_dbg(dev, " NULL mode\n"); + /* nothing to build */ + return; + } + /* bypass */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_DLLI, + areq_ctx->mlli_params.mlli_dma_addr, + areq_ctx->mlli_params.mlli_len, NS_BIT); + set_dout_sram(&desc[idx], ctx->drvdata->mlli_sram_addr, + areq_ctx->mlli_params.mlli_len); + set_flow_mode(&desc[idx], BYPASS); + idx++; + /* process */ + hw_desc_init(&desc[idx]); + set_din_type(&desc[idx], DMA_MLLI, + ctx->drvdata->mlli_sram_addr, + areq_ctx->mlli_nents, NS_BIT); + set_flow_mode(&desc[idx], flow_mode); + idx++; + } + if (is_not_last_data) + set_din_not_last_indication(&desc[(idx - 1)]); + /* return updated desc sequence size */ + *seq_size = idx; +} + +static const void *cc_larval_digest(struct device *dev, u32 mode) +{ + switch (mode) { + case DRV_HASH_MD5: + return md5_init; + case DRV_HASH_SHA1: + return sha1_init; + case DRV_HASH_SHA224: + return sha224_init; + case DRV_HASH_SHA256: + return sha256_init; +#if (CC_DEV_SHA_MAX > 256) + case DRV_HASH_SHA384: + return sha384_init; + case DRV_HASH_SHA512: + return sha512_init; +#endif + default: + dev_err(dev, "Invalid hash mode (%d)\n", mode); + return md5_init; + } +} + +/*! + * Gets the address of the initial digest in SRAM + * according to the given hash mode + * + * \param drvdata + * \param mode The Hash mode. Supported modes: MD5/SHA1/SHA224/SHA256 + * + * \return u32 The address of the initial digest in SRAM + */ +cc_sram_addr_t cc_larval_digest_addr(void *drvdata, u32 mode) +{ + struct cc_drvdata *_drvdata = (struct cc_drvdata *)drvdata; + struct cc_hash_handle *hash_handle = _drvdata->hash_handle; + struct device *dev = drvdata_to_dev(_drvdata); + + switch (mode) { + case DRV_HASH_NULL: + break; /*Ignore*/ + case DRV_HASH_MD5: + return (hash_handle->larval_digest_sram_addr); + case DRV_HASH_SHA1: + return (hash_handle->larval_digest_sram_addr + + sizeof(md5_init)); + case DRV_HASH_SHA224: + return (hash_handle->larval_digest_sram_addr + + sizeof(md5_init) + + sizeof(sha1_init)); + case DRV_HASH_SHA256: + return (hash_handle->larval_digest_sram_addr + + sizeof(md5_init) + + sizeof(sha1_init) + + sizeof(sha224_init)); +#if (CC_DEV_SHA_MAX > 256) + case DRV_HASH_SHA384: + return (hash_handle->larval_digest_sram_addr + + sizeof(md5_init) + + sizeof(sha1_init) + + sizeof(sha224_init) + + sizeof(sha256_init)); + case DRV_HASH_SHA512: + return (hash_handle->larval_digest_sram_addr + + sizeof(md5_init) + + sizeof(sha1_init) + + sizeof(sha224_init) + + sizeof(sha256_init) + + sizeof(sha384_init)); +#endif + default: + dev_err(dev, "Invalid hash mode (%d)\n", mode); + } + + /*This is valid wrong value to avoid kernel crash*/ + return hash_handle->larval_digest_sram_addr; +} + +cc_sram_addr_t +cc_digest_len_addr(void *drvdata, u32 mode) +{ + struct cc_drvdata *_drvdata = (struct cc_drvdata *)drvdata; + struct cc_hash_handle *hash_handle = _drvdata->hash_handle; + cc_sram_addr_t digest_len_addr = hash_handle->digest_len_sram_addr; + + switch (mode) { + case DRV_HASH_SHA1: + case DRV_HASH_SHA224: + case DRV_HASH_SHA256: + case DRV_HASH_MD5: + return digest_len_addr; +#if (CC_DEV_SHA_MAX > 256) + case DRV_HASH_SHA384: + case DRV_HASH_SHA512: + return digest_len_addr + sizeof(digest_len_init); +#endif + default: + return digest_len_addr; /*to avoid kernel crash*/ + } +} |
