/* * Copyright (C) 2017 Marvell * * Antoine Tenart * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include #include #include #include #include #include #include #include #include #include #include "safexcel.h" enum safexcel_cipher_direction { SAFEXCEL_ENCRYPT, SAFEXCEL_DECRYPT, }; struct safexcel_cipher_ctx { struct safexcel_context base; struct safexcel_crypto_priv *priv; u32 mode; bool aead; __le32 key[8]; unsigned int key_len; /* All the below is AEAD specific */ u32 alg; u32 state_sz; u32 ipad[SHA512_DIGEST_SIZE / sizeof(u32)]; u32 opad[SHA512_DIGEST_SIZE / sizeof(u32)]; }; struct safexcel_cipher_req { enum safexcel_cipher_direction direction; bool needs_inv; }; static void safexcel_skcipher_token(struct safexcel_cipher_ctx *ctx, u8 *iv, struct safexcel_command_desc *cdesc, u32 length) { struct safexcel_token *token; unsigned offset = 0; if (ctx->mode == CONTEXT_CONTROL_CRYPTO_MODE_CBC) { offset = AES_BLOCK_SIZE / sizeof(u32); memcpy(cdesc->control_data.token, iv, AES_BLOCK_SIZE); cdesc->control_data.options |= EIP197_OPTION_4_TOKEN_IV_CMD; } token = (struct safexcel_token *)(cdesc->control_data.token + offset); token[0].opcode = EIP197_TOKEN_OPCODE_DIRECTION; token[0].packet_length = length; token[0].stat = EIP197_TOKEN_STAT_LAST_PACKET | EIP197_TOKEN_STAT_LAST_HASH; token[0].instructions = EIP197_TOKEN_INS_LAST | EIP197_TOKEN_INS_TYPE_CRYTO | EIP197_TOKEN_INS_TYPE_OUTPUT; } static void safexcel_aead_token(struct safexcel_cipher_ctx *ctx, u8 *iv, struct safexcel_command_desc *cdesc, enum safexcel_cipher_direction direction, u32 cryptlen, u32 assoclen, u32 digestsize) { struct safexcel_token *token; unsigned offset = 0; if (ctx->mode == CONTEXT_CONTROL_CRYPTO_MODE_CBC) { offset = AES_BLOCK_SIZE / sizeof(u32); memcpy(cdesc->control_data.token, iv, AES_BLOCK_SIZE); cdesc->control_data.options |= EIP197_OPTION_4_TOKEN_IV_CMD; } token = (struct safexcel_token *)(cdesc->control_data.token + offset); if (direction == SAFEXCEL_DECRYPT) cryptlen -= digestsize; token[0].opcode = EIP197_TOKEN_OPCODE_DIRECTION; token[0].packet_length = assoclen; token[0].instructions = EIP197_TOKEN_INS_TYPE_HASH | EIP197_TOKEN_INS_TYPE_OUTPUT; token[1].opcode = EIP197_TOKEN_OPCODE_DIRECTION; token[1].packet_length = cryptlen; token[1].stat = EIP197_TOKEN_STAT_LAST_HASH; token[1].instructions = EIP197_TOKEN_INS_LAST | EIP197_TOKEN_INS_TYPE_CRYTO | EIP197_TOKEN_INS_TYPE_HASH | EIP197_TOKEN_INS_TYPE_OUTPUT; if (direction == SAFEXCEL_ENCRYPT) { token[2].opcode = EIP197_TOKEN_OPCODE_INSERT; token[2].packet_length = digestsize; token[2].stat = EIP197_TOKEN_STAT_LAST_HASH | EIP197_TOKEN_STAT_LAST_PACKET; token[2].instructions = EIP197_TOKEN_INS_TYPE_OUTPUT | EIP197_TOKEN_INS_INSERT_HASH_DIGEST; } else { token[2].opcode = EIP197_TOKEN_OPCODE_RETRIEVE; token[2].packet_length = digestsize; token[2].stat = EIP197_TOKEN_STAT_LAST_HASH | EIP197_TOKEN_STAT_LAST_PACKET; token[2].instructions = EIP197_TOKEN_INS_INSERT_HASH_DIGEST; token[3].opcode = EIP197_TOKEN_OPCODE_VERIFY; token[3].packet_length = digestsize | EIP197_TOKEN_HASH_RESULT_VERIFY; token[3].stat = EIP197_TOKEN_STAT_LAST_HASH | EIP197_TOKEN_STAT_LAST_PACKET; token[3].instructions = EIP197_TOKEN_INS_TYPE_OUTPUT; } } static int safexcel_skcipher_aes_setkey(struct crypto_skcipher *ctfm, const u8 *key, unsigned int len) { struct crypto_tfm *tfm = crypto_skcipher_tfm(ctfm); struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); struct safexcel_crypto_priv *priv = ctx->priv; struct crypto_aes_ctx aes; int ret, i; ret = crypto_aes_expand_key(&aes, key, len); if (ret) { crypto_skcipher_set_flags(ctfm, CRYPTO_TFM_RES_BAD_KEY_LEN); return ret; } if (priv->version == EIP197B && ctx->base.ctxr_dma) { for (i = 0; i < len / sizeof(u32); i++) { if (ctx->key[i] != cpu_to_le32(aes.key_enc[i])) { ctx->base.needs_inv = true; break; } } } for (i = 0; i < len / sizeof(u32); i++) ctx->key[i] = cpu_to_le32(aes.key_enc[i]); ctx->key_len = len; memzero_explicit(&aes, sizeof(aes)); return 0; } static int safexcel_aead_aes_setkey(struct crypto_aead *ctfm, const u8 *key, unsigned int len) { struct crypto_tfm *tfm = crypto_aead_tfm(ctfm); struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); struct safexcel_ahash_export_state istate, ostate; struct safexcel_crypto_priv *priv = ctx->priv; struct crypto_authenc_keys keys; if (crypto_authenc_extractkeys(&keys, key, len) != 0) goto badkey; if (keys.enckeylen > sizeof(ctx->key)) goto badkey; /* Encryption key */ if (priv->version == EIP197B && ctx->base.ctxr_dma && memcmp(ctx->key, keys.enckey, keys.enckeylen)) ctx->base.needs_inv = true; /* Auth key */ switch (ctx->alg) { case CONTEXT_CONTROL_CRYPTO_ALG_SHA1: if (safexcel_hmac_setkey("safexcel-sha1", keys.authkey, keys.authkeylen, &istate, &ostate)) goto badkey; break; case CONTEXT_CONTROL_CRYPTO_ALG_SHA224: if (safexcel_hmac_setkey("safexcel-sha224", keys.authkey, keys.authkeylen, &istate, &ostate)) goto badkey; break; case CONTEXT_CONTROL_CRYPTO_ALG_SHA256: if (safexcel_hmac_setkey("safexcel-sha256", keys.authkey, keys.authkeylen, &istate, &ostate)) goto badkey; break; case CONTEXT_CONTROL_CRYPTO_ALG_SHA384: if (safexcel_hmac_setkey("safexcel-sha384", keys.authkey, keys.authkeylen, &istate, &ostate)) goto badkey; break; case CONTEXT_CONTROL_CRYPTO_ALG_SHA512: if (safexcel_hmac_setkey("safexcel-sha512", keys.authkey, keys.authkeylen, &istate, &ostate)) goto badkey; break; default: dev_err(priv->dev, "aead: unsupported hash algorithm\n"); goto badkey; } crypto_aead_set_flags(ctfm, crypto_aead_get_flags(ctfm) & CRYPTO_TFM_RES_MASK); if (priv->version == EIP197B && ctx->base.ctxr_dma && (memcmp(ctx->ipad, istate.state, ctx->state_sz) || memcmp(ctx->opad, ostate.state, ctx->state_sz))) ctx->base.needs_inv = true; /* Now copy the keys into the context */ memcpy(ctx->key, keys.enckey, keys.enckeylen); ctx->key_len = keys.enckeylen; memcpy(ctx->ipad, &istate.state, ctx->state_sz); memcpy(ctx->opad, &ostate.state, ctx->state_sz); memzero_explicit(&keys, sizeof(keys)); return 0; badkey: crypto_aead_set_flags(ctfm, CRYPTO_TFM_RES_BAD_KEY_LEN); memzero_explicit(&keys, sizeof(keys)); return -EINVAL; } static int safexcel_context_control(struct safexcel_cipher_ctx *ctx, struct crypto_async_request *async, struct safexcel_cipher_req *sreq, struct safexcel_command_desc *cdesc) { struct safexcel_crypto_priv *priv = ctx->priv; int ctrl_size; if (ctx->aead) { if (sreq->direction == SAFEXCEL_ENCRYPT) cdesc->control_data.control0 |= CONTEXT_CONTROL_TYPE_ENCRYPT_HASH_OUT; else cdesc->control_data.control0 |= CONTEXT_CONTROL_TYPE_HASH_DECRYPT_IN; } else { cdesc->control_data.control0 |= CONTEXT_CONTROL_TYPE_CRYPTO_OUT; /* The decryption control type is a combination of the * encryption type and CONTEXT_CONTROL_TYPE_NULL_IN, for all * types. */ if (sreq->direction == SAFEXCEL_DECRYPT) cdesc->control_data.control0 |= CONTEXT_CONTROL_TYPE_NULL_IN; } cdesc->control_data.control0 |= CONTEXT_CONTROL_KEY_EN; cdesc->control_data.control1 |= ctx->mode; if (ctx->aead) cdesc->control_data.control0 |= CONTEXT_CONTROL_DIGEST_HMAC | ctx->alg; switch (ctx->key_len) { case AES_KEYSIZE_128: cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES128; break; case AES_KEYSIZE_192: cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES192; break; case AES_KEYSIZE_256: cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES256; break; default: dev_err(priv->dev, "aes keysize not supported: %u\n", ctx->key_len); return -EINVAL; } ctrl_size = ctx->key_len / sizeof(u32); if (ctx->aead) /* Take in account the ipad+opad digests */ ctrl_size += ctx->state_sz / sizeof(u32) * 2; cdesc->control_data.control0 |= CONTEXT_CONTROL_SIZE(ctrl_size); return 0; } static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv, int ring, struct crypto_async_request *async, struct scatterlist *src, struct scatterlist *dst, unsigned int cryptlen, struct safexcel_cipher_req *sreq, bool *should_complete, int *ret) { struct safexcel_result_desc *rdesc; int ndesc = 0; *ret = 0; spin_lock_bh(&priv->ring[ring].egress_lock); do { rdesc = safexcel_ring_next_rptr(priv, &priv->ring[ring].rdr); if (IS_ERR(rdesc)) { dev_err(priv->dev, "cipher: result: could not retrieve the result descriptor\n"); *ret = PTR_ERR(rdesc); break; } if (likely(!*ret)) *ret = safexcel_rdesc_check_errors(priv, rdesc); ndesc++; } while (!rdesc->last_seg); safexcel_complete(priv, ring); spin_unlock_bh(&priv->ring[ring].egress_lock); if (src == dst) { dma_unmap_sg(priv->dev, src, sg_nents_for_len(src, cryptlen), DMA_BIDIRECTIONAL); } else { dma_unmap_sg(priv->dev, src, sg_nents_for_len(src, cryptlen), DMA_TO_DEVICE); dma_unmap_sg(priv->dev, dst, sg_nents_for_len(dst, cryptlen), DMA_FROM_DEVICE); } *should_complete = true; return ndesc; } static int safexcel_aes_send(struct crypto_async_request *base, int ring, struct safexcel_request *request, struct safexcel_cipher_req *sreq, struct scatterlist *src, struct scatterlist *dst, unsigned int cryptlen, unsigned int assoclen, unsigned int digestsize, u8 *iv, int *commands, int *results) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(base->tfm); struct safexcel_crypto_priv *priv = ctx->priv; struct safexcel_command_desc *cdesc; struct safexcel_result_desc *rdesc; struct scatterlist *sg; unsigned int totlen = cryptlen + assoclen; int nr_src, nr_dst, n_cdesc = 0, n_rdesc = 0, queued = totlen; int i, ret = 0; if (src == dst) { nr_src = dma_map_sg(priv->dev, src, sg_nents_for_len(src, totlen), DMA_BIDIRECTIONAL); nr_dst = nr_src; if (!nr_src) return -EINVAL; } else { nr_src = dma_map_sg(priv->dev, src, sg_nents_for_len(src, totlen), DMA_TO_DEVICE); if (!nr_src) return -EINVAL; nr_dst = dma_map_sg(priv->dev, dst, sg_nents_for_len(dst, totlen), DMA_FROM_DEVICE); if (!nr_dst) { dma_unmap_sg(priv->dev, src, sg_nents_for_len(src, totlen), DMA_TO_DEVICE); return -EINVAL; } } memcpy(ctx->base.ctxr->data, ctx->key, ctx->key_len); if (ctx->aead) { memcpy(ctx->base.ctxr->data + ctx->key_len / sizeof(u32), ctx->ipad, ctx->state_sz); memcpy(ctx->base.ctxr->data + (ctx->key_len + ctx->state_sz) / sizeof(u32), ctx->opad, ctx->state_sz); } spin_lock_bh(&priv->ring[ring].egress_lock); /* command descriptors */ for_each_sg(src, sg, nr_src, i) { int len = sg_dma_len(sg); /* Do not overflow the request */ if (queued - len < 0) len = queued; cdesc = safexcel_add_cdesc(priv, ring, !n_cdesc, !(queued - len), sg_dma_address(sg), len, totlen, ctx->base.ctxr_dma); if (IS_ERR(cdesc)) { /* No space left in the command descriptor ring */ ret = PTR_ERR(cdesc); goto cdesc_rollback; } n_cdesc++; if (n_cdesc == 1) { safexcel_context_control(ctx, base, sreq, cdesc); if (ctx->aead) safexcel_aead_token(ctx, iv, cdesc, sreq->direction, cryptlen, assoclen, digestsize); else safexcel_skcipher_token(ctx, iv, cdesc, cryptlen); } queued -= len; if (!queued) break; } /* result descriptors */ for_each_sg(dst, sg, nr_dst, i) { bool first = !i, last = (i == nr_dst - 1); u32 len = sg_dma_len(sg); rdesc = safexcel_add_rdesc(priv, ring, first, last, sg_dma_address(sg), len); if (IS_ERR(rdesc)) { /* No space left in the result descriptor ring */ ret = PTR_ERR(rdesc); goto rdesc_rollback; } n_rdesc++; } spin_unlock_bh(&priv->ring[ring].egress_lock); request->req = base; *commands = n_cdesc; *results = n_rdesc; return 0; rdesc_rollback: for (i = 0; i < n_rdesc; i++) safexcel_ring_rollback_wptr(priv, &priv->ring[ring].rdr); cdesc_rollback: for (i = 0; i < n_cdesc; i++) safexcel_ring_rollback_wptr(priv, &priv->ring[ring].cdr); spin_unlock_bh(&priv->ring[ring].egress_lock); if (src == dst) { dma_unmap_sg(priv->dev, src, sg_nents_for_len(src, totlen), DMA_BIDIRECTIONAL); } else { dma_unmap_sg(priv->dev, src, sg_nents_for_len(src, totlen), DMA_TO_DEVICE); dma_unmap_sg(priv->dev, dst, sg_nents_for_len(dst, totlen), DMA_FROM_DEVICE); } return ret; } static int safexcel_handle_inv_result(struct safexcel_crypto_priv *priv, int ring, struct crypto_async_request *base, bool *should_complete, int *ret) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(base->tfm); struct safexcel_result_desc *rdesc; int ndesc = 0, enq_ret; *ret = 0; spin_lock_bh(&priv->ring[ring].egress_lock); do { rdesc = safexcel_ring_next_rptr(priv, &priv->ring[ring].rdr); if (IS_ERR(rdesc)) { dev_err(priv->dev, "cipher: invalidate: could not retrieve the result descriptor\n"); *ret = PTR_ERR(rdesc); break; } if (likely(!*ret)) *ret = safexcel_rdesc_check_errors(priv, rdesc); ndesc++; } while (!rdesc->last_seg); safexcel_complete(priv, ring); spin_unlock_bh(&priv->ring[ring].egress_lock); if (ctx->base.exit_inv) { dma_pool_free(priv->context_pool, ctx->base.ctxr, ctx->base.ctxr_dma); *should_complete = true; return ndesc; } ring = safexcel_select_ring(priv); ctx->base.ring = ring; spin_lock_bh(&priv->ring[ring].queue_lock); enq_ret = crypto_enqueue_request(&priv->ring[ring].queue, base); spin_unlock_bh(&priv->ring[ring].queue_lock); if (enq_ret != -EINPROGRESS) *ret = enq_ret; queue_work(priv->ring[ring].workqueue, &priv->ring[ring].work_data.work); *should_complete = false; return ndesc; } static int safexcel_skcipher_handle_result(struct safexcel_crypto_priv *priv, int ring, struct crypto_async_request *async, bool *should_complete, int *ret) { struct skcipher_request *req = skcipher_request_cast(async); struct safexcel_cipher_req *sreq = skcipher_request_ctx(req); int err; if (sreq->needs_inv) { sreq->needs_inv = false; err = safexcel_handle_inv_result(priv, ring, async, should_complete, ret); } else { err = safexcel_handle_req_result(priv, ring, async, req->src, req->dst, req->cryptlen, sreq, should_complete, ret); } return err; } static int safexcel_aead_handle_result(struct safexcel_crypto_priv *priv, int ring, struct crypto_async_request *async, bool *should_complete, int *ret) { struct aead_request *req = aead_request_cast(async); struct crypto_aead *tfm = crypto_aead_reqtfm(req); struct safexcel_cipher_req *sreq = aead_request_ctx(req); int err; if (sreq->needs_inv) { sreq->needs_inv = false; err = safexcel_handle_inv_result(priv, ring, async, should_complete, ret); } else { err = safexcel_handle_req_result(priv, ring, async, req->src, req->dst, req->cryptlen + crypto_aead_authsize(tfm), sreq, should_complete, ret); } return err; } static int safexcel_cipher_send_inv(struct crypto_async_request *base, int ring, struct safexcel_request *request, int *commands, int *results) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(base->tfm); struct safexcel_crypto_priv *priv = ctx->priv; int ret; ret = safexcel_invalidate_cache(base, priv, ctx->base.ctxr_dma, ring, request); if (unlikely(ret)) return ret; *commands = 1; *results = 1; return 0; } static int safexcel_skcipher_send(struct crypto_async_request *async, int ring, struct safexcel_request *request, int *commands, int *results) { struct skcipher_request *req = skcipher_request_cast(async); struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm); struct safexcel_cipher_req *sreq = skcipher_request_ctx(req); struct safexcel_crypto_priv *priv = ctx->priv; int ret; BUG_ON(priv->version == EIP97IES && sreq->needs_inv); if (sreq->needs_inv) ret = safexcel_cipher_send_inv(async, ring, request, commands, results); else ret = safexcel_aes_send(async, ring, request, sreq, req->src, req->dst, req->cryptlen, 0, 0, req->iv, commands, results); return ret; } static int safexcel_aead_send(struct crypto_async_request *async, int ring, struct safexcel_request *request, int *commands, int *results) { struct aead_request *req = aead_request_cast(async); struct crypto_aead *tfm = crypto_aead_reqtfm(req); struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm); struct safexcel_cipher_req *sreq = aead_request_ctx(req); struct safexcel_crypto_priv *priv = ctx->priv; int ret; BUG_ON(priv->version == EIP97IES && sreq->needs_inv); if (sreq->needs_inv) ret = safexcel_cipher_send_inv(async, ring, request, commands, results); else ret = safexcel_aes_send(async, ring, request, sreq, req->src, req->dst, req->cryptlen, req->assoclen, crypto_aead_authsize(tfm), req->iv, commands, results); return ret; } static int safexcel_cipher_exit_inv(struct crypto_tfm *tfm, struct crypto_async_request *base, struct safexcel_cipher_req *sreq, struct safexcel_inv_result *result) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); struct safexcel_crypto_priv *priv = ctx->priv; int ring = ctx->base.ring; init_completion(&result->completion); ctx = crypto_tfm_ctx(base->tfm); ctx->base.exit_inv = true; sreq->needs_inv = true; spin_lock_bh(&priv->ring[ring].queue_lock); crypto_enqueue_request(&priv->ring[ring].queue, base); spin_unlock_bh(&priv->ring[ring].queue_lock); queue_work(priv->ring[ring].workqueue, &priv->ring[ring].work_data.work); wait_for_completion(&result->completion); if (result->error) { dev_warn(priv->dev, "cipher: sync: invalidate: completion error %d\n", result->error); return result->error; } return 0; } static int safexcel_skcipher_exit_inv(struct crypto_tfm *tfm) { EIP197_REQUEST_ON_STACK(req, skcipher, EIP197_SKCIPHER_REQ_SIZE); struct safexcel_cipher_req *sreq = skcipher_request_ctx(req); struct safexcel_inv_result result = {}; memset(req, 0, sizeof(struct skcipher_request)); skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, safexcel_inv_complete, &result); skcipher_request_set_tfm(req, __crypto_skcipher_cast(tfm)); return safexcel_cipher_exit_inv(tfm, &req->base, sreq, &result); } static int safexcel_aead_exit_inv(struct crypto_tfm *tfm) { EIP197_REQUEST_ON_STACK(req, aead, EIP197_AEAD_REQ_SIZE); struct safexcel_cipher_req *sreq = aead_request_ctx(req); struct safexcel_inv_result result = {}; memset(req, 0, sizeof(struct aead_request)); aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, safexcel_inv_complete, &result); aead_request_set_tfm(req, __crypto_aead_cast(tfm)); return safexcel_cipher_exit_inv(tfm, &req->base, sreq, &result); } static int safexcel_aes(struct crypto_async_request *base, struct safexcel_cipher_req *sreq, enum safexcel_cipher_direction dir, u32 mode) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(base->tfm); struct safexcel_crypto_priv *priv = ctx->priv; int ret, ring; sreq->needs_inv = false; sreq->direction = dir; ctx->mode = mode; if (ctx->base.ctxr) { if (priv->version == EIP197B && ctx->base.needs_inv) { sreq->needs_inv = true; ctx->base.needs_inv = false; } } else { ctx->base.ring = safexcel_select_ring(priv); ctx->base.ctxr = dma_pool_zalloc(priv->context_pool, EIP197_GFP_FLAGS(*base), &ctx->base.ctxr_dma); if (!ctx->base.ctxr) return -ENOMEM; } ring = ctx->base.ring; spin_lock_bh(&priv->ring[ring].queue_lock); ret = crypto_enqueue_request(&priv->ring[ring].queue, base); spin_unlock_bh(&priv->ring[ring].queue_lock); queue_work(priv->ring[ring].workqueue, &priv->ring[ring].work_data.work); return ret; } static int safexcel_ecb_aes_encrypt(struct skcipher_request *req) { return safexcel_aes(&req->base, skcipher_request_ctx(req), SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB); } static int safexcel_ecb_aes_decrypt(struct skcipher_request *req) { return safexcel_aes(&req->base, skcipher_request_ctx(req), SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB); } static int safexcel_skcipher_cra_init(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); struct safexcel_alg_template *tmpl = container_of(tfm->__crt_alg, struct safexcel_alg_template, alg.skcipher.base); crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm), sizeof(struct safexcel_cipher_req)); ctx->priv = tmpl->priv; ctx->base.send = safexcel_skcipher_send; ctx->base.handle_result = safexcel_skcipher_handle_result; return 0; } static int safexcel_cipher_cra_exit(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); memzero_explicit(ctx->key, sizeof(ctx->key)); /* context not allocated, skip invalidation */ if (!ctx->base.ctxr) return -ENOMEM; memzero_explicit(ctx->base.ctxr->data, sizeof(ctx->base.ctxr->data)); return 0; } static void safexcel_skcipher_cra_exit(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); struct safexcel_crypto_priv *priv = ctx->priv; int ret; if (safexcel_cipher_cra_exit(tfm)) return; if (priv->version == EIP197B) { ret = safexcel_skcipher_exit_inv(tfm); if (ret) dev_warn(priv->dev, "skcipher: invalidation error %d\n", ret); } else { dma_pool_free(priv->context_pool, ctx->base.ctxr, ctx->base.ctxr_dma); } } static void safexcel_aead_cra_exit(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); struct safexcel_crypto_priv *priv = ctx->priv; int ret; if (safexcel_cipher_cra_exit(tfm)) return; if (priv->version == EIP197B) { ret = safexcel_aead_exit_inv(tfm); if (ret) dev_warn(priv->dev, "aead: invalidation error %d\n", ret); } else { dma_pool_free(priv->context_pool, ctx->base.ctxr, ctx->base.ctxr_dma); } } struct safexcel_alg_template safexcel_alg_ecb_aes = { .type = SAFEXCEL_ALG_TYPE_SKCIPHER, .engines = EIP97IES | EIP197B, .alg.skcipher = { .setkey = safexcel_skcipher_aes_setkey, .encrypt = safexcel_ecb_aes_encrypt, .decrypt = safexcel_ecb_aes_decrypt, .min_keysize = AES_MIN_KEY_SIZE, .max_keysize = AES_MAX_KEY_SIZE, .base = { .cra_name = "ecb(aes)", .cra_driver_name = "safexcel-ecb-aes", .cra_priority = 300, .cra_flags = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY, .cra_blocksize = AES_BLOCK_SIZE, .cra_ctxsize = sizeof(struct safexcel_cipher_ctx), .cra_alignmask = 0, .cra_init = safexcel_skcipher_cra_init, .cra_exit = safexcel_skcipher_cra_exit, .cra_module = THIS_MODULE, }, }, }; static int safexcel_cbc_aes_encrypt(struct skcipher_request *req) { return safexcel_aes(&req->base, skcipher_request_ctx(req), SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC); } static int safexcel_cbc_aes_decrypt(struct skcipher_request *req) { return safexcel_aes(&req->base, skcipher_request_ctx(req), SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC); } struct safexcel_alg_template safexcel_alg_cbc_aes = { .type = SAFEXCEL_ALG_TYPE_SKCIPHER, .engines = EIP97IES | EIP197B, .alg.skcipher = { .setkey = safexcel_skcipher_aes_setkey, .encrypt = safexcel_cbc_aes_encrypt, .decrypt = safexcel_cbc_aes_decrypt, .min_keysize = AES_MIN_KEY_SIZE, .max_keysize = AES_MAX_KEY_SIZE, .ivsize = AES_BLOCK_SIZE, .base = { .cra_name = "cbc(aes)", .cra_driver_name = "safexcel-cbc-aes", .cra_priority = 300, .cra_flags = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY, .cra_blocksize = AES_BLOCK_SIZE, .cra_ctxsize = sizeof(struct safexcel_cipher_ctx), .cra_alignmask = 0, .cra_init = safexcel_skcipher_cra_init, .cra_exit = safexcel_skcipher_cra_exit, .cra_module = THIS_MODULE, }, }, }; static int safexcel_aead_encrypt(struct aead_request *req) { struct safexcel_cipher_req *creq = aead_request_ctx(req); return safexcel_aes(&req->base, creq, SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC); } static int safexcel_aead_decrypt(struct aead_request *req) { struct safexcel_cipher_req *creq = aead_request_ctx(req); return safexcel_aes(&req->base, creq, SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC); } static int safexcel_aead_cra_init(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); struct safexcel_alg_template *tmpl = container_of(tfm->__crt_alg, struct safexcel_alg_template, alg.aead.base); crypto_aead_set_reqsize(__crypto_aead_cast(tfm), sizeof(struct safexcel_cipher_req)); ctx->priv = tmpl->priv; ctx->aead = true; ctx->base.send = safexcel_aead_send; ctx->base.handle_result = safexcel_aead_handle_result; return 0; } static int safexcel_aead_sha1_cra_init(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); safexcel_aead_cra_init(tfm); ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA1; ctx->state_sz = SHA1_DIGEST_SIZE; return 0; } struct safexcel_alg_template safexcel_alg_authenc_hmac_sha1_cbc_aes = { .type = SAFEXCEL_ALG_TYPE_AEAD, .engines = EIP97IES | EIP197B, .alg.aead = { .setkey = safexcel_aead_aes_setkey, .encrypt = safexcel_aead_encrypt, .decrypt = safexcel_aead_decrypt, .ivsize = AES_BLOCK_SIZE, .maxauthsize = SHA1_DIGEST_SIZE, .base = { .cra_name = "authenc(hmac(sha1),cbc(aes))", .cra_driver_name = "safexcel-authenc-hmac-sha1-cbc-aes", .cra_priority = 300, .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY, .cra_blocksize = AES_BLOCK_SIZE, .cra_ctxsize = sizeof(struct safexcel_cipher_ctx), .cra_alignmask = 0, .cra_init = safexcel_aead_sha1_cra_init, .cra_exit = safexcel_aead_cra_exit, .cra_module = THIS_MODULE, }, }, }; static int safexcel_aead_sha256_cra_init(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); safexcel_aead_cra_init(tfm); ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA256; ctx->state_sz = SHA256_DIGEST_SIZE; return 0; } struct safexcel_alg_template safexcel_alg_authenc_hmac_sha256_cbc_aes = { .type = SAFEXCEL_ALG_TYPE_AEAD, .engines = EIP97IES | EIP197B, .alg.aead = { .setkey = safexcel_aead_aes_setkey, .encrypt = safexcel_aead_encrypt, .decrypt = safexcel_aead_decrypt, .ivsize = AES_BLOCK_SIZE, .maxauthsize = SHA256_DIGEST_SIZE, .base = { .cra_name = "authenc(hmac(sha256),cbc(aes))", .cra_driver_name = "safexcel-authenc-hmac-sha256-cbc-aes", .cra_priority = 300, .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY, .cra_blocksize = AES_BLOCK_SIZE, .cra_ctxsize = sizeof(struct safexcel_cipher_ctx), .cra_alignmask = 0, .cra_init = safexcel_aead_sha256_cra_init, .cra_exit = safexcel_aead_cra_exit, .cra_module = THIS_MODULE, }, }, }; static int safexcel_aead_sha224_cra_init(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); safexcel_aead_cra_init(tfm); ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA224; ctx->state_sz = SHA256_DIGEST_SIZE; return 0; } struct safexcel_alg_template safexcel_alg_authenc_hmac_sha224_cbc_aes = { .type = SAFEXCEL_ALG_TYPE_AEAD, .engines = EIP97IES | EIP197B, .alg.aead = { .setkey = safexcel_aead_aes_setkey, .encrypt = safexcel_aead_encrypt, .decrypt = safexcel_aead_decrypt, .ivsize = AES_BLOCK_SIZE, .maxauthsize = SHA224_DIGEST_SIZE, .base = { .cra_name = "authenc(hmac(sha224),cbc(aes))", .cra_driver_name = "safexcel-authenc-hmac-sha224-cbc-aes", .cra_priority = 300, .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY, .cra_blocksize = AES_BLOCK_SIZE, .cra_ctxsize = sizeof(struct safexcel_cipher_ctx), .cra_alignmask = 0, .cra_init = safexcel_aead_sha224_cra_init, .cra_exit = safexcel_aead_cra_exit, .cra_module = THIS_MODULE, }, }, }; static int safexcel_aead_sha512_cra_init(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); safexcel_aead_cra_init(tfm); ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA512; ctx->state_sz = SHA512_DIGEST_SIZE; return 0; } struct safexcel_alg_template safexcel_alg_authenc_hmac_sha512_cbc_aes = { .type = SAFEXCEL_ALG_TYPE_AEAD, .engines = EIP97IES | EIP197B, .alg.aead = { .setkey = safexcel_aead_aes_setkey, .encrypt = safexcel_aead_encrypt, .decrypt = safexcel_aead_decrypt, .ivsize = AES_BLOCK_SIZE, .maxauthsize = SHA512_DIGEST_SIZE, .base = { .cra_name = "authenc(hmac(sha512),cbc(aes))", .cra_driver_name = "safexcel-authenc-hmac-sha512-cbc-aes", .cra_priority = 300, .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY, .cra_blocksize = AES_BLOCK_SIZE, .cra_ctxsize = sizeof(struct safexcel_cipher_ctx), .cra_alignmask = 0, .cra_init = safexcel_aead_sha512_cra_init, .cra_exit = safexcel_aead_cra_exit, .cra_module = THIS_MODULE, }, }, }; static int safexcel_aead_sha384_cra_init(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); safexcel_aead_cra_init(tfm); ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA384; ctx->state_sz = SHA512_DIGEST_SIZE; return 0; } struct safexcel_alg_template safexcel_alg_authenc_hmac_sha384_cbc_aes = { .type = SAFEXCEL_ALG_TYPE_AEAD, .engines = EIP97IES | EIP197B, .alg.aead = { .setkey = safexcel_aead_aes_setkey, .encrypt = safexcel_aead_encrypt, .decrypt = safexcel_aead_decrypt, .ivsize = AES_BLOCK_SIZE, .maxauthsize = SHA384_DIGEST_SIZE, .base = { .cra_name = "authenc(hmac(sha384),cbc(aes))", .cra_driver_name = "safexcel-authenc-hmac-sha384-cbc-aes", .cra_priority = 300, .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY, .cra_blocksize = AES_BLOCK_SIZE, .cra_ctxsize = sizeof(struct safexcel_cipher_ctx), .cra_alignmask = 0, .cra_init = safexcel_aead_sha384_cra_init, .cra_exit = safexcel_aead_cra_exit, .cra_module = THIS_MODULE, }, }, };