@@ -11322,6 +11322,13 @@ L: linux-crypto@vger.kernel.org
S: Maintained
F: drivers/crypto/inside-secure/
+INSIDE SECURE EIP93 CRYPTO DRIVER
+M: Christian Marangi <ansuelsmth@gmail.com>
+L: linux-crypto@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/crypto/inside-secure,safexcel-eip93.yaml
+F: drivers/crypto/inside-secure/eip93/
+
INTEGRITY MEASUREMENT ARCHITECTURE (IMA)
M: Mimi Zohar <zohar@linux.ibm.com>
M: Roberto Sassu <roberto.sassu@huawei.com>
@@ -851,5 +851,6 @@ config CRYPTO_DEV_SA2UL
source "drivers/crypto/aspeed/Kconfig"
source "drivers/crypto/starfive/Kconfig"
+source "drivers/crypto/inside-secure/eip93/Kconfig"
endif # CRYPTO_HW
@@ -52,3 +52,4 @@ obj-y += hisilicon/
obj-$(CONFIG_CRYPTO_DEV_AMLOGIC_GXL) += amlogic/
obj-y += intel/
obj-y += starfive/
+obj-y += inside-secure/eip93/
new file mode 100644
@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-2.0
+config CRYPTO_DEV_EIP93
+ tristate "Support for EIP93 crypto HW accelerators"
+ depends on SOC_MT7621 || ARCH_AIROHA ||COMPILE_TEST
+ select CRYPTO_LIB_AES
+ select CRYPTO_LIB_DES
+ select CRYPTO_SKCIPHER
+ select CRYPTO_AEAD
+ select CRYPTO_AUTHENC
+ select CRYPTO_MD5
+ select CRYPTO_SHA1
+ select CRYPTO_SHA256
+ help
+ EIP93 have various crypto HW accelerators. Select this if
+ you want to use the EIP93 modules for any of the crypto algorithms.
+
+ If the IP supports it, this provide offload for AES - ECB, CBC and
+ CTR crypto. Also provide DES and 3DES ECB and CBC.
+
+ Also provide AEAD authenc(hmac(x), cipher(y)) for supported algo.
new file mode 100644
@@ -0,0 +1,5 @@
+obj-$(CONFIG_CRYPTO_DEV_EIP93) += crypto-hw-eip93.o
+
+crypto-hw-eip93-y += eip93-main.o eip93-common.o
+crypto-hw-eip93-y += eip93-cipher.o eip93-aead.o
+crypto-hw-eip93-y += eip93-hash.o
new file mode 100644
@@ -0,0 +1,711 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+
+#include <crypto/aead.h>
+#include <crypto/aes.h>
+#include <crypto/authenc.h>
+#include <crypto/ctr.h>
+#include <crypto/hmac.h>
+#include <crypto/internal/aead.h>
+#include <crypto/md5.h>
+#include <crypto/null.h>
+#include <crypto/sha1.h>
+#include <crypto/sha2.h>
+
+#include <crypto/internal/des.h>
+
+#include <linux/crypto.h>
+#include <linux/dma-mapping.h>
+
+#include "eip93-aead.h"
+#include "eip93-cipher.h"
+#include "eip93-common.h"
+#include "eip93-regs.h"
+
+void eip93_aead_handle_result(struct crypto_async_request *async, int err)
+{
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(async->tfm);
+ struct eip93_device *mtk = ctx->mtk;
+ struct aead_request *req = aead_request_cast(async);
+ struct eip93_cipher_reqctx *rctx = aead_request_ctx(req);
+
+ eip93_unmap_dma(mtk, rctx, req->src, req->dst);
+ eip93_handle_result(mtk, rctx, req->iv);
+
+ aead_request_complete(req, err);
+}
+
+static int eip93_aead_send_req(struct crypto_async_request *async)
+{
+ struct aead_request *req = aead_request_cast(async);
+ struct eip93_cipher_reqctx *rctx = aead_request_ctx(req);
+ int err;
+
+ err = check_valid_request(rctx);
+ if (err) {
+ aead_request_complete(req, err);
+ return err;
+ }
+
+ return eip93_send_req(async, req->iv, rctx);
+}
+
+/* Crypto aead API functions */
+static int eip93_aead_cra_init(struct crypto_tfm *tfm)
+{
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct eip93_alg_template *tmpl = container_of(tfm->__crt_alg,
+ struct eip93_alg_template, alg.aead.base);
+
+ crypto_aead_set_reqsize(__crypto_aead_cast(tfm),
+ sizeof(struct eip93_cipher_reqctx));
+
+ ctx->mtk = tmpl->mtk;
+ ctx->flags = tmpl->flags;
+ ctx->type = tmpl->type;
+ ctx->set_assoc = true;
+
+ ctx->sa_record = kzalloc(sizeof(*ctx->sa_record), GFP_KERNEL);
+ if (!ctx->sa_record)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void eip93_aead_cra_exit(struct crypto_tfm *tfm)
+{
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ dma_unmap_single(ctx->mtk->dev, ctx->sa_record_base,
+ sizeof(*ctx->sa_record), DMA_TO_DEVICE);
+ kfree(ctx->sa_record);
+}
+
+static int eip93_aead_setkey(struct crypto_aead *ctfm, const u8 *key,
+ unsigned int len)
+{
+ struct crypto_tfm *tfm = crypto_aead_tfm(ctfm);
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct crypto_authenc_keys keys;
+ struct crypto_aes_ctx aes;
+ struct sa_record *sa_record = ctx->sa_record;
+ u32 nonce = 0;
+ int ret;
+
+ if (crypto_authenc_extractkeys(&keys, key, len))
+ return -EINVAL;
+
+ if (IS_RFC3686(ctx->flags)) {
+ if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
+ return -EINVAL;
+
+ keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
+ memcpy(&nonce, keys.enckey + keys.enckeylen,
+ CTR_RFC3686_NONCE_SIZE);
+ }
+
+ switch ((ctx->flags & EIP93_ALG_MASK)) {
+ case EIP93_ALG_DES:
+ ret = verify_aead_des_key(ctfm, keys.enckey, keys.enckeylen);
+ if (ret)
+ return ret;
+
+ break;
+ case EIP93_ALG_3DES:
+ if (keys.enckeylen != DES3_EDE_KEY_SIZE)
+ return -EINVAL;
+
+ ret = verify_aead_des3_key(ctfm, keys.enckey, keys.enckeylen);
+ if (ret)
+ return ret;
+
+ break;
+ case EIP93_ALG_AES:
+ ret = aes_expandkey(&aes, keys.enckey, keys.enckeylen);
+ if (ret)
+ return ret;
+
+ break;
+ }
+
+ ctx->blksize = crypto_aead_blocksize(ctfm);
+ /* Encryption key */
+ eip93_set_sa_record(sa_record, keys.enckeylen, ctx->flags);
+ sa_record->sa_cmd0_word &= ~EIP93_SA_CMD_OPCODE;
+ sa_record->sa_cmd0_word |= FIELD_PREP(EIP93_SA_CMD_OPCODE,
+ EIP93_SA_CMD_OPCODE_BASIC_OUT_ENC_HASH);
+ sa_record->sa_cmd0_word &= ~EIP93_SA_CMD_DIGEST_LENGTH;
+ sa_record->sa_cmd0_word |= FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH,
+ ctx->authsize / sizeof(u32));
+
+ memcpy(sa_record->sa_key, keys.enckey, keys.enckeylen);
+ ctx->sa_nonce = nonce;
+ sa_record->sa_nonce = nonce;
+
+ /* authentication key */
+ ret = eip93_hmac_setkey(ctx->flags, keys.authkey, keys.authkeylen,
+ ctx->authsize, sa_record->sa_i_digest,
+ sa_record->sa_o_digest, false);
+
+ ctx->set_assoc = true;
+
+ return ret;
+}
+
+static int eip93_aead_setauthsize(struct crypto_aead *ctfm,
+ unsigned int authsize)
+{
+ struct crypto_tfm *tfm = crypto_aead_tfm(ctfm);
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ ctx->authsize = authsize;
+ ctx->sa_record->sa_cmd0_word &= ~EIP93_SA_CMD_DIGEST_LENGTH;
+ ctx->sa_record->sa_cmd0_word |= FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH,
+ ctx->authsize / sizeof(u32));
+
+ return 0;
+}
+
+static void eip93_aead_setassoc(struct eip93_crypto_ctx *ctx,
+ struct aead_request *req)
+{
+ struct sa_record *sa_record = ctx->sa_record;
+
+ sa_record->sa_cmd1_word &= ~EIP93_SA_CMD_HASH_CRYPT_OFFSET;
+ sa_record->sa_cmd1_word |= FIELD_PREP(EIP93_SA_CMD_HASH_CRYPT_OFFSET,
+ req->assoclen / sizeof(u32));
+
+ ctx->assoclen = req->assoclen;
+}
+
+static int eip93_aead_crypt(struct aead_request *req)
+{
+ struct eip93_cipher_reqctx *rctx = aead_request_ctx(req);
+ struct crypto_async_request *async = &req->base;
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
+ struct crypto_aead *aead = crypto_aead_reqtfm(req);
+ int ret;
+
+ ctx->sa_record_base = dma_map_single(ctx->mtk->dev, ctx->sa_record,
+ sizeof(*ctx->sa_record), DMA_TO_DEVICE);
+ ret = dma_mapping_error(ctx->mtk->dev, ctx->sa_record_base);
+ if (ret)
+ return ret;
+
+ rctx->textsize = req->cryptlen;
+ rctx->blksize = ctx->blksize;
+ rctx->assoclen = req->assoclen;
+ rctx->authsize = ctx->authsize;
+ rctx->sg_src = req->src;
+ rctx->sg_dst = req->dst;
+ rctx->ivsize = crypto_aead_ivsize(aead);
+ rctx->desc_flags = EIP93_DESC_AEAD;
+ rctx->sa_record_base = ctx->sa_record_base;
+
+ if (IS_DECRYPT(rctx->flags))
+ rctx->textsize -= rctx->authsize;
+
+ return eip93_aead_send_req(async);
+}
+
+static int eip93_aead_encrypt(struct aead_request *req)
+{
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
+ struct eip93_cipher_reqctx *rctx = aead_request_ctx(req);
+
+ rctx->flags = ctx->flags;
+ rctx->flags |= EIP93_ENCRYPT;
+ if (ctx->set_assoc) {
+ eip93_aead_setassoc(ctx, req);
+ ctx->set_assoc = false;
+ }
+
+ if (req->assoclen != ctx->assoclen) {
+ dev_err(ctx->mtk->dev, "Request AAD length error\n");
+ return -EINVAL;
+ }
+
+ return eip93_aead_crypt(req);
+}
+
+static int eip93_aead_decrypt(struct aead_request *req)
+{
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
+ struct eip93_cipher_reqctx *rctx = aead_request_ctx(req);
+
+ ctx->sa_record->sa_cmd0_word |= EIP93_SA_CMD_DIRECTION_IN;
+ ctx->sa_record->sa_cmd1_word &= ~(EIP93_SA_CMD_COPY_PAD |
+ EIP93_SA_CMD_COPY_DIGEST);
+
+ rctx->flags = ctx->flags;
+ rctx->flags |= EIP93_DECRYPT;
+ if (ctx->set_assoc) {
+ eip93_aead_setassoc(ctx, req);
+ ctx->set_assoc = false;
+ }
+
+ if (req->assoclen != ctx->assoclen) {
+ dev_err(ctx->mtk->dev, "Request AAD length error\n");
+ return -EINVAL;
+ }
+
+ return eip93_aead_crypt(req);
+}
+
+/* Available authenc algorithms in this module */
+struct eip93_alg_template eip93_alg_authenc_hmac_md5_cbc_aes = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_MD5 | EIP93_MODE_CBC | EIP93_ALG_AES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = MD5_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(md5),cbc(aes))",
+ .cra_driver_name =
+ "authenc(hmac(md5-eip93), cbc(aes-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha1_cbc_aes = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA1 | EIP93_MODE_CBC | EIP93_ALG_AES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha1),cbc(aes))",
+ .cra_driver_name =
+ "authenc(hmac(sha1-eip93),cbc(aes-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha224_cbc_aes = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA224 | EIP93_MODE_CBC | EIP93_ALG_AES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA224_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha224),cbc(aes))",
+ .cra_driver_name =
+ "authenc(hmac(sha224-eip93),cbc(aes-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha256_cbc_aes = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA256 | EIP93_MODE_CBC | EIP93_ALG_AES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha256),cbc(aes))",
+ .cra_driver_name =
+ "authenc(hmac(sha256-eip93),cbc(aes-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_md5_rfc3686_aes = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_MD5 |
+ EIP93_MODE_CTR | EIP93_MODE_RFC3686 | EIP93_ALG_AES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = CTR_RFC3686_IV_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = MD5_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(md5),rfc3686(ctr(aes)))",
+ .cra_driver_name =
+ "authenc(hmac(md5-eip93),rfc3686(ctr(aes-eip93)))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = 1,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha1_rfc3686_aes = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA1 |
+ EIP93_MODE_CTR | EIP93_MODE_RFC3686 | EIP93_ALG_AES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = CTR_RFC3686_IV_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))",
+ .cra_driver_name =
+ "authenc(hmac(sha1-eip93),rfc3686(ctr(aes-eip93)))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = 1,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha224_rfc3686_aes = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA224 |
+ EIP93_MODE_CTR | EIP93_MODE_RFC3686 | EIP93_ALG_AES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = CTR_RFC3686_IV_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA224_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))",
+ .cra_driver_name =
+ "authenc(hmac(sha224-eip93),rfc3686(ctr(aes-eip93)))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = 1,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha256_rfc3686_aes = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA256 |
+ EIP93_MODE_CTR | EIP93_MODE_RFC3686 | EIP93_ALG_AES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = CTR_RFC3686_IV_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))",
+ .cra_driver_name =
+ "authenc(hmac(sha256-eip93),rfc3686(ctr(aes-eip93)))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = 1,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_md5_cbc_des = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_MD5 | EIP93_MODE_CBC | EIP93_ALG_DES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = DES_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = MD5_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(md5),cbc(des))",
+ .cra_driver_name =
+ "authenc(hmac(md5-eip93),cbc(des-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha1_cbc_des = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA1 | EIP93_MODE_CBC | EIP93_ALG_DES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = DES_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha1),cbc(des))",
+ .cra_driver_name =
+ "authenc(hmac(sha1-eip93),cbc(des-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha224_cbc_des = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA224 | EIP93_MODE_CBC | EIP93_ALG_DES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = DES_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA224_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha224),cbc(des))",
+ .cra_driver_name =
+ "authenc(hmac(sha224-eip93),cbc(des-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha256_cbc_des = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA256 | EIP93_MODE_CBC | EIP93_ALG_DES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = DES_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha256),cbc(des))",
+ .cra_driver_name =
+ "authenc(hmac(sha256-eip93),cbc(des-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_md5_cbc_des3_ede = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_MD5 | EIP93_MODE_CBC | EIP93_ALG_3DES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = MD5_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(md5),cbc(des3_ede))",
+ .cra_driver_name =
+ "authenc(hmac(md5-eip93),cbc(des3_ede-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0x0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha1_cbc_des3_ede = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA1 | EIP93_MODE_CBC | EIP93_ALG_3DES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha1),cbc(des3_ede))",
+ .cra_driver_name =
+ "authenc(hmac(sha1-eip93),cbc(des3_ede-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0x0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha224_cbc_des3_ede = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA224 | EIP93_MODE_CBC | EIP93_ALG_3DES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA224_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha224),cbc(des3_ede))",
+ .cra_driver_name =
+ "authenc(hmac(sha224-eip93),cbc(des3_ede-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0x0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_authenc_hmac_sha256_cbc_des3_ede = {
+ .type = EIP93_ALG_TYPE_AEAD,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA256 | EIP93_MODE_CBC | EIP93_ALG_3DES,
+ .alg.aead = {
+ .setkey = eip93_aead_setkey,
+ .encrypt = eip93_aead_encrypt,
+ .decrypt = eip93_aead_decrypt,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .setauthsize = eip93_aead_setauthsize,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha256),cbc(des3_ede))",
+ .cra_driver_name =
+ "authenc(hmac(sha256-eip93),cbc(des3_ede-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0x0,
+ .cra_init = eip93_aead_cra_init,
+ .cra_exit = eip93_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
new file mode 100644
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+#ifndef _EIP93_AEAD_H_
+#define _EIP93_AEAD_H_
+
+extern struct eip93_alg_template eip93_alg_authenc_hmac_md5_cbc_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha1_cbc_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha224_cbc_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha256_cbc_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_md5_ctr_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha1_ctr_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha224_ctr_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha256_ctr_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_md5_rfc3686_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha1_rfc3686_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha224_rfc3686_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha256_rfc3686_aes;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_md5_cbc_des;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha1_cbc_des;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha224_cbc_des;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha256_cbc_des;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_md5_cbc_des3_ede;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha1_cbc_des3_ede;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha224_cbc_des3_ede;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha256_cbc_des3_ede;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_md5_ecb_null;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha1_ecb_null;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha224_ecb_null;
+extern struct eip93_alg_template eip93_alg_authenc_hmac_sha256_ecb_null;
+
+void eip93_aead_handle_result(struct crypto_async_request *async, int err);
+
+#endif /* _EIP93_AEAD_H_ */
new file mode 100644
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+#ifndef _EIP93_AES_H_
+#define _EIP93_AES_H_
+
+extern struct eip93_alg_template eip93_alg_ecb_aes;
+extern struct eip93_alg_template eip93_alg_cbc_aes;
+extern struct eip93_alg_template eip93_alg_ctr_aes;
+extern struct eip93_alg_template eip93_alg_rfc3686_aes;
+
+#endif /* _EIP93_AES_H_ */
new file mode 100644
@@ -0,0 +1,413 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+
+#include <crypto/aes.h>
+#include <crypto/ctr.h>
+#include <crypto/internal/des.h>
+#include <linux/dma-mapping.h>
+
+#include "eip93-aes.h"
+#include "eip93-cipher.h"
+#include "eip93-common.h"
+#include "eip93-des.h"
+#include "eip93-regs.h"
+
+void eip93_skcipher_handle_result(struct crypto_async_request *async, int err)
+{
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(async->tfm);
+ struct eip93_device *mtk = ctx->mtk;
+ struct skcipher_request *req = skcipher_request_cast(async);
+ struct eip93_cipher_reqctx *rctx = skcipher_request_ctx(req);
+
+ eip93_unmap_dma(mtk, rctx, req->src, req->dst);
+ eip93_handle_result(mtk, rctx, req->iv);
+
+ skcipher_request_complete(req, err);
+}
+
+static int eip93_skcipher_send_req(struct crypto_async_request *async)
+{
+ struct skcipher_request *req = skcipher_request_cast(async);
+ struct eip93_cipher_reqctx *rctx = skcipher_request_ctx(req);
+ int err;
+
+ err = check_valid_request(rctx);
+
+ if (err) {
+ skcipher_request_complete(req, err);
+ return err;
+ }
+
+ return eip93_send_req(async, req->iv, rctx);
+}
+
+/* Crypto skcipher API functions */
+static int eip93_skcipher_cra_init(struct crypto_tfm *tfm)
+{
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct eip93_alg_template *tmpl = container_of(tfm->__crt_alg,
+ struct eip93_alg_template, alg.skcipher.base);
+
+ crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm),
+ sizeof(struct eip93_cipher_reqctx));
+
+ memset(ctx, 0, sizeof(*ctx));
+
+ ctx->mtk = tmpl->mtk;
+ ctx->type = tmpl->type;
+
+ ctx->sa_record = kzalloc(sizeof(*ctx->sa_record), GFP_KERNEL);
+ if (!ctx->sa_record)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void eip93_skcipher_cra_exit(struct crypto_tfm *tfm)
+{
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ dma_unmap_single(ctx->mtk->dev, ctx->sa_record_base,
+ sizeof(*ctx->sa_record), DMA_TO_DEVICE);
+ kfree(ctx->sa_record);
+}
+
+static int eip93_skcipher_setkey(struct crypto_skcipher *ctfm, const u8 *key,
+ unsigned int len)
+{
+ struct crypto_tfm *tfm = crypto_skcipher_tfm(ctfm);
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct eip93_alg_template *tmpl = container_of(tfm->__crt_alg,
+ struct eip93_alg_template,
+ alg.skcipher.base);
+ struct sa_record *sa_record = ctx->sa_record;
+ unsigned int keylen = len;
+ u32 flags = tmpl->flags;
+ u32 nonce = 0;
+ int ret;
+
+ if (!key || !keylen)
+ return -EINVAL;
+
+ if (IS_RFC3686(flags)) {
+ if (len < CTR_RFC3686_NONCE_SIZE)
+ return -EINVAL;
+
+ keylen = len - CTR_RFC3686_NONCE_SIZE;
+ memcpy(&nonce, key + keylen, CTR_RFC3686_NONCE_SIZE);
+ }
+
+ if (flags & EIP93_ALG_DES) {
+ ctx->blksize = DES_BLOCK_SIZE;
+ ret = verify_skcipher_des_key(ctfm, key);
+ if (ret)
+ return ret;
+ }
+ if (flags & EIP93_ALG_3DES) {
+ ctx->blksize = DES3_EDE_BLOCK_SIZE;
+ ret = verify_skcipher_des3_key(ctfm, key);
+ if (ret)
+ return ret;
+ }
+
+ if (flags & EIP93_ALG_AES) {
+ struct crypto_aes_ctx aes;
+
+ ctx->blksize = AES_BLOCK_SIZE;
+ ret = aes_expandkey(&aes, key, keylen);
+ if (ret)
+ return ret;
+ }
+
+ eip93_set_sa_record(sa_record, keylen, flags);
+
+ memcpy(sa_record->sa_key, key, keylen);
+ ctx->sa_nonce = nonce;
+ sa_record->sa_nonce = nonce;
+
+ return 0;
+}
+
+static int eip93_skcipher_crypt(struct skcipher_request *req)
+{
+ struct eip93_cipher_reqctx *rctx = skcipher_request_ctx(req);
+ struct crypto_async_request *async = &req->base;
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
+ struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
+ int ret;
+
+ if (!req->cryptlen)
+ return 0;
+
+ /*
+ * ECB and CBC algorithms require message lengths to be
+ * multiples of block size.
+ */
+ if (IS_ECB(rctx->flags) || IS_CBC(rctx->flags))
+ if (!IS_ALIGNED(req->cryptlen,
+ crypto_skcipher_blocksize(skcipher)))
+ return -EINVAL;
+
+ ctx->sa_record_base = dma_map_single(ctx->mtk->dev, ctx->sa_record,
+ sizeof(*ctx->sa_record), DMA_TO_DEVICE);
+ ret = dma_mapping_error(ctx->mtk->dev, ctx->sa_record_base);
+ if (ret)
+ return ret;
+
+ rctx->assoclen = 0;
+ rctx->textsize = req->cryptlen;
+ rctx->authsize = 0;
+ rctx->sg_src = req->src;
+ rctx->sg_dst = req->dst;
+ rctx->ivsize = crypto_skcipher_ivsize(skcipher);
+ rctx->blksize = ctx->blksize;
+ rctx->desc_flags = EIP93_DESC_SKCIPHER;
+ rctx->sa_record_base = ctx->sa_record_base;
+
+ return eip93_skcipher_send_req(async);
+}
+
+static int eip93_skcipher_encrypt(struct skcipher_request *req)
+{
+ struct eip93_cipher_reqctx *rctx = skcipher_request_ctx(req);
+ struct eip93_alg_template *tmpl = container_of(req->base.tfm->__crt_alg,
+ struct eip93_alg_template, alg.skcipher.base);
+
+ rctx->flags = tmpl->flags;
+ rctx->flags |= EIP93_ENCRYPT;
+
+ return eip93_skcipher_crypt(req);
+}
+
+static int eip93_skcipher_decrypt(struct skcipher_request *req)
+{
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
+ struct eip93_cipher_reqctx *rctx = skcipher_request_ctx(req);
+ struct eip93_alg_template *tmpl = container_of(req->base.tfm->__crt_alg,
+ struct eip93_alg_template, alg.skcipher.base);
+
+ ctx->sa_record->sa_cmd0_word |= EIP93_SA_CMD_DIRECTION_IN;
+
+ rctx->flags = tmpl->flags;
+ rctx->flags |= EIP93_DECRYPT;
+
+ return eip93_skcipher_crypt(req);
+}
+
+/* Available algorithms in this module */
+struct eip93_alg_template eip93_alg_ecb_aes = {
+ .type = EIP93_ALG_TYPE_SKCIPHER,
+ .flags = EIP93_MODE_ECB | EIP93_ALG_AES,
+ .alg.skcipher = {
+ .setkey = eip93_skcipher_setkey,
+ .encrypt = eip93_skcipher_encrypt,
+ .decrypt = eip93_skcipher_decrypt,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = 0,
+ .base = {
+ .cra_name = "ecb(aes)",
+ .cra_driver_name = "ecb(aes-eip93)",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0xf,
+ .cra_init = eip93_skcipher_cra_init,
+ .cra_exit = eip93_skcipher_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_cbc_aes = {
+ .type = EIP93_ALG_TYPE_SKCIPHER,
+ .flags = EIP93_MODE_CBC | EIP93_ALG_AES,
+ .alg.skcipher = {
+ .setkey = eip93_skcipher_setkey,
+ .encrypt = eip93_skcipher_encrypt,
+ .decrypt = eip93_skcipher_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 = "cbc(aes-eip93)",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0xf,
+ .cra_init = eip93_skcipher_cra_init,
+ .cra_exit = eip93_skcipher_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_ctr_aes = {
+ .type = EIP93_ALG_TYPE_SKCIPHER,
+ .flags = EIP93_MODE_CTR | EIP93_ALG_AES,
+ .alg.skcipher = {
+ .setkey = eip93_skcipher_setkey,
+ .encrypt = eip93_skcipher_encrypt,
+ .decrypt = eip93_skcipher_decrypt,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .base = {
+ .cra_name = "ctr(aes)",
+ .cra_driver_name = "ctr(aes-eip93)",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = 1,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0xf,
+ .cra_init = eip93_skcipher_cra_init,
+ .cra_exit = eip93_skcipher_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_rfc3686_aes = {
+ .type = EIP93_ALG_TYPE_SKCIPHER,
+ .flags = EIP93_MODE_CTR | EIP93_MODE_RFC3686 | EIP93_ALG_AES,
+ .alg.skcipher = {
+ .setkey = eip93_skcipher_setkey,
+ .encrypt = eip93_skcipher_encrypt,
+ .decrypt = eip93_skcipher_decrypt,
+ .min_keysize = AES_MIN_KEY_SIZE + CTR_RFC3686_NONCE_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE + CTR_RFC3686_NONCE_SIZE,
+ .ivsize = CTR_RFC3686_IV_SIZE,
+ .base = {
+ .cra_name = "rfc3686(ctr(aes))",
+ .cra_driver_name = "rfc3686(ctr(aes-eip93))",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = 1,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0xf,
+ .cra_init = eip93_skcipher_cra_init,
+ .cra_exit = eip93_skcipher_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_ecb_des = {
+ .type = EIP93_ALG_TYPE_SKCIPHER,
+ .flags = EIP93_MODE_ECB | EIP93_ALG_DES,
+ .alg.skcipher = {
+ .setkey = eip93_skcipher_setkey,
+ .encrypt = eip93_skcipher_encrypt,
+ .decrypt = eip93_skcipher_decrypt,
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ .ivsize = 0,
+ .base = {
+ .cra_name = "ecb(des)",
+ .cra_driver_name = "ebc(des-eip93)",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_skcipher_cra_init,
+ .cra_exit = eip93_skcipher_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_cbc_des = {
+ .type = EIP93_ALG_TYPE_SKCIPHER,
+ .flags = EIP93_MODE_CBC | EIP93_ALG_DES,
+ .alg.skcipher = {
+ .setkey = eip93_skcipher_setkey,
+ .encrypt = eip93_skcipher_encrypt,
+ .decrypt = eip93_skcipher_decrypt,
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ .ivsize = DES_BLOCK_SIZE,
+ .base = {
+ .cra_name = "cbc(des)",
+ .cra_driver_name = "cbc(des-eip93)",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_skcipher_cra_init,
+ .cra_exit = eip93_skcipher_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_ecb_des3_ede = {
+ .type = EIP93_ALG_TYPE_SKCIPHER,
+ .flags = EIP93_MODE_ECB | EIP93_ALG_3DES,
+ .alg.skcipher = {
+ .setkey = eip93_skcipher_setkey,
+ .encrypt = eip93_skcipher_encrypt,
+ .decrypt = eip93_skcipher_decrypt,
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .ivsize = 0,
+ .base = {
+ .cra_name = "ecb(des3_ede)",
+ .cra_driver_name = "ecb(des3_ede-eip93)",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_skcipher_cra_init,
+ .cra_exit = eip93_skcipher_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_cbc_des3_ede = {
+ .type = EIP93_ALG_TYPE_SKCIPHER,
+ .flags = EIP93_MODE_CBC | EIP93_ALG_3DES,
+ .alg.skcipher = {
+ .setkey = eip93_skcipher_setkey,
+ .encrypt = eip93_skcipher_encrypt,
+ .decrypt = eip93_skcipher_decrypt,
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .base = {
+ .cra_name = "cbc(des3_ede)",
+ .cra_driver_name = "cbc(des3_ede-eip93)",
+ .cra_priority = EIP93_CRA_PRIORITY,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_crypto_ctx),
+ .cra_alignmask = 0,
+ .cra_init = eip93_skcipher_cra_init,
+ .cra_exit = eip93_skcipher_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
new file mode 100644
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+#ifndef _EIP93_CIPHER_H_
+#define _EIP93_CIPHER_H_
+
+#include "eip93-main.h"
+
+struct eip93_crypto_ctx {
+ struct eip93_device *mtk;
+ u32 flags;
+ struct sa_record *sa_record;
+ u32 sa_nonce;
+ int blksize;
+ dma_addr_t sa_record_base;
+ /* AEAD specific */
+ unsigned int authsize;
+ unsigned int assoclen;
+ bool set_assoc;
+ enum eip93_alg_type type;
+};
+
+struct eip93_cipher_reqctx {
+ u16 desc_flags;
+ u16 flags;
+ unsigned int blksize;
+ unsigned int ivsize;
+ unsigned int textsize;
+ unsigned int assoclen;
+ unsigned int authsize;
+ dma_addr_t sa_record_base;
+ struct sa_state *sa_state;
+ dma_addr_t sa_state_base;
+ struct eip93_descriptor *cdesc;
+ struct scatterlist *sg_src;
+ struct scatterlist *sg_dst;
+ int src_nents;
+ int dst_nents;
+ struct sa_state *sa_state_ctr;
+ dma_addr_t sa_state_ctr_base;
+};
+
+int check_valid_request(struct eip93_cipher_reqctx *rctx);
+
+void eip93_unmap_dma(struct eip93_device *mtk, struct eip93_cipher_reqctx *rctx,
+ struct scatterlist *reqsrc, struct scatterlist *reqdst);
+
+void eip93_skcipher_handle_result(struct crypto_async_request *async, int err);
+
+int eip93_send_req(struct crypto_async_request *async,
+ const u8 *reqiv, struct eip93_cipher_reqctx *rctx);
+
+void eip93_handle_result(struct eip93_device *mtk, struct eip93_cipher_reqctx *rctx,
+ u8 *reqiv);
+
+#endif /* _EIP93_CIPHER_H_ */
new file mode 100644
@@ -0,0 +1,816 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+
+#include <crypto/aes.h>
+#include <crypto/ctr.h>
+#include <crypto/hmac.h>
+#include <crypto/sha1.h>
+#include <crypto/sha2.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/scatterlist.h>
+
+#include "eip93-cipher.h"
+#include "eip93-hash.h"
+#include "eip93-common.h"
+#include "eip93-main.h"
+#include "eip93-regs.h"
+
+int eip93_parse_ctrl_stat_err(struct eip93_device *mtk, int err)
+{
+ u32 ext_err;
+
+ if (!err)
+ return 0;
+
+ switch (err & ~EIP93_PE_CTRL_PE_EXT_ERR_CODE) {
+ case EIP93_PE_CTRL_PE_AUTH_ERR:
+ case EIP93_PE_CTRL_PE_PAD_ERR:
+ return -EBADMSG;
+ /* let software handle anti-replay errors */
+ case EIP93_PE_CTRL_PE_SEQNUM_ERR:
+ return 0;
+ case EIP93_PE_CTRL_PE_EXT_ERR:
+ break;
+ default:
+ dev_err(mtk->dev, "Unhandled error 0x%08x\n", err);
+ return -EINVAL;
+ }
+
+ /* Parse additional ext errors */
+ ext_err = FIELD_GET(EIP93_PE_CTRL_PE_EXT_ERR_CODE, err);
+ switch (ext_err) {
+ case EIP93_PE_CTRL_PE_EXT_ERR_BUS:
+ case EIP93_PE_CTRL_PE_EXT_ERR_PROCESSING:
+ return -EIO;
+ case EIP93_PE_CTRL_PE_EXT_ERR_DESC_OWNER:
+ return -EACCES;
+ case EIP93_PE_CTRL_PE_EXT_ERR_INVALID_CRYPTO_OP:
+ case EIP93_PE_CTRL_PE_EXT_ERR_INVALID_CRYPTO_ALGO:
+ case EIP93_PE_CTRL_PE_EXT_ERR_SPI:
+ return -EINVAL;
+ case EIP93_PE_CTRL_PE_EXT_ERR_ZERO_LENGTH:
+ case EIP93_PE_CTRL_PE_EXT_ERR_INVALID_PK_LENGTH:
+ case EIP93_PE_CTRL_PE_EXT_ERR_BLOCK_SIZE_ERR:
+ return -EBADMSG;
+ default:
+ dev_err(mtk->dev, "Unhandled ext error 0x%08x\n", ext_err);
+ return -EINVAL;
+ }
+}
+
+static void *eip93_ring_next_wptr(struct eip93_device *mtk,
+ struct eip93_desc_ring *ring)
+{
+ void *ptr = ring->write;
+
+ if ((ring->write == ring->read - ring->offset) ||
+ (ring->read == ring->base && ring->write == ring->base_end))
+ return ERR_PTR(-ENOMEM);
+
+ if (ring->write == ring->base_end)
+ ring->write = ring->base;
+ else
+ ring->write += ring->offset;
+
+ return ptr;
+}
+
+static void *eip93_ring_next_rptr(struct eip93_device *mtk,
+ struct eip93_desc_ring *ring)
+{
+ void *ptr = ring->read;
+
+ if (ring->write == ring->read)
+ return ERR_PTR(-ENOENT);
+
+ if (ring->read == ring->base_end)
+ ring->read = ring->base;
+ else
+ ring->read += ring->offset;
+
+ return ptr;
+}
+
+int eip93_put_descriptor(struct eip93_device *mtk,
+ struct eip93_descriptor *desc)
+{
+ struct eip93_descriptor *cdesc;
+ struct eip93_descriptor *rdesc;
+
+ guard(spinlock_irqsave)(&mtk->ring->write_lock);
+
+ rdesc = eip93_ring_next_wptr(mtk, &mtk->ring->rdr);
+ if (IS_ERR(rdesc))
+ return -ENOENT;
+
+ cdesc = eip93_ring_next_wptr(mtk, &mtk->ring->cdr);
+ if (IS_ERR(cdesc))
+ return -ENOENT;
+
+ memset(rdesc, 0, sizeof(struct eip93_descriptor));
+
+ memcpy(cdesc, desc, sizeof(struct eip93_descriptor));
+
+ atomic_dec(&mtk->ring->free);
+
+ return 0;
+}
+
+void *eip93_get_descriptor(struct eip93_device *mtk)
+{
+ struct eip93_descriptor *cdesc;
+ void *ptr;
+
+ guard(spinlock_irqsave)(&mtk->ring->read_lock);
+
+ cdesc = eip93_ring_next_rptr(mtk, &mtk->ring->cdr);
+ if (IS_ERR(cdesc))
+ return ERR_PTR(-ENOENT);
+
+ memset(cdesc, 0, sizeof(struct eip93_descriptor));
+
+ ptr = eip93_ring_next_rptr(mtk, &mtk->ring->rdr);
+ if (IS_ERR(ptr))
+ return ERR_PTR(-ENOENT);
+
+ atomic_inc(&mtk->ring->free);
+
+ return ptr;
+}
+
+static void eip93_free_sg_copy(const int len, struct scatterlist **sg)
+{
+ if (!*sg || !len)
+ return;
+
+ free_pages((unsigned long)sg_virt(*sg), get_order(len));
+ kfree(*sg);
+ *sg = NULL;
+}
+
+static int eip93_make_sg_copy(struct scatterlist *src, struct scatterlist **dst,
+ const u32 len, const bool copy)
+{
+ void *pages;
+
+ *dst = kmalloc(sizeof(**dst), GFP_KERNEL);
+ if (!*dst)
+ return -ENOMEM;
+
+ pages = (void *)__get_free_pages(GFP_KERNEL | GFP_DMA,
+ get_order(len));
+ if (!pages) {
+ kfree(*dst);
+ *dst = NULL;
+ return -ENOMEM;
+ }
+
+ sg_init_table(*dst, 1);
+ sg_set_buf(*dst, pages, len);
+
+ /* copy only as requested */
+ if (copy)
+ sg_copy_to_buffer(src, sg_nents(src), pages, len);
+
+ return 0;
+}
+
+static bool eip93_is_sg_aligned(struct scatterlist *sg, u32 len,
+ const int blksize)
+{
+ int nents;
+
+ for (nents = 0; sg; sg = sg_next(sg), ++nents) {
+ if (!IS_ALIGNED(sg->offset, 4))
+ return false;
+
+ if (len <= sg->length) {
+ if (!IS_ALIGNED(len, blksize))
+ return false;
+
+ return true;
+ }
+
+ if (!IS_ALIGNED(sg->length, blksize))
+ return false;
+
+ len -= sg->length;
+ }
+ return false;
+}
+
+int check_valid_request(struct eip93_cipher_reqctx *rctx)
+{
+ struct scatterlist *src = rctx->sg_src;
+ struct scatterlist *dst = rctx->sg_dst;
+ u32 src_nents, dst_nents;
+ u32 textsize = rctx->textsize;
+ u32 authsize = rctx->authsize;
+ u32 blksize = rctx->blksize;
+ u32 totlen_src = rctx->assoclen + rctx->textsize;
+ u32 totlen_dst = rctx->assoclen + rctx->textsize;
+ u32 copy_len;
+ bool src_align, dst_align;
+ int err = -EINVAL;
+
+ if (!IS_CTR(rctx->flags)) {
+ if (!IS_ALIGNED(textsize, blksize))
+ return err;
+ }
+
+ if (authsize) {
+ if (IS_ENCRYPT(rctx->flags))
+ totlen_dst += authsize;
+ else
+ totlen_src += authsize;
+ }
+
+ src_nents = sg_nents_for_len(src, totlen_src);
+ dst_nents = sg_nents_for_len(dst, totlen_dst);
+
+ if (src == dst) {
+ src_nents = max(src_nents, dst_nents);
+ dst_nents = src_nents;
+ if (unlikely((totlen_src || totlen_dst) && src_nents <= 0))
+ return err;
+
+ } else {
+ if (unlikely(totlen_src && src_nents <= 0))
+ return err;
+
+ if (unlikely(totlen_dst && dst_nents <= 0))
+ return err;
+ }
+
+ if (authsize) {
+ if (dst_nents == 1 && src_nents == 1) {
+ src_align = eip93_is_sg_aligned(src, totlen_src, blksize);
+ if (src == dst)
+ dst_align = src_align;
+ else
+ dst_align = eip93_is_sg_aligned(dst, totlen_dst, blksize);
+ } else {
+ src_align = false;
+ dst_align = false;
+ }
+ } else {
+ src_align = eip93_is_sg_aligned(src, totlen_src, blksize);
+ if (src == dst)
+ dst_align = src_align;
+ else
+ dst_align = eip93_is_sg_aligned(dst, totlen_dst, blksize);
+ }
+
+ copy_len = max(totlen_src, totlen_dst);
+ if (!src_align) {
+ err = eip93_make_sg_copy(src, &rctx->sg_src, copy_len, true);
+ if (err)
+ return err;
+ }
+
+ if (!dst_align) {
+ err = eip93_make_sg_copy(dst, &rctx->sg_dst, copy_len, false);
+ if (err)
+ return err;
+ }
+
+ rctx->src_nents = sg_nents_for_len(rctx->sg_src, totlen_src);
+ rctx->dst_nents = sg_nents_for_len(rctx->sg_dst, totlen_dst);
+
+ return 0;
+}
+
+/*
+ * Set sa_record function:
+ * Even sa_record is set to "0", keep " = 0" for readability.
+ */
+void eip93_set_sa_record(struct sa_record *sa_record, const unsigned int keylen,
+ const u32 flags)
+{
+ /* Reset cmd word */
+ sa_record->sa_cmd0_word = 0;
+ sa_record->sa_cmd1_word = 0;
+
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_IV_FROM_STATE;
+ if (!IS_ECB(flags))
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_SAVE_IV;
+
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_OP_BASIC;
+
+ switch ((flags & EIP93_ALG_MASK)) {
+ case EIP93_ALG_AES:
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_CIPHER_AES;
+ sa_record->sa_cmd1_word |= FIELD_PREP(EIP93_SA_CMD_AES_KEY_LENGTH,
+ keylen >> 3);
+ break;
+ case EIP93_ALG_3DES:
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_CIPHER_3DES;
+ break;
+ case EIP93_ALG_DES:
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_CIPHER_DES;
+ break;
+ default:
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_CIPHER_NULL;
+ }
+
+ switch ((flags & EIP93_HASH_MASK)) {
+ case EIP93_HASH_SHA256:
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_HASH_SHA256;
+ break;
+ case EIP93_HASH_SHA224:
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_HASH_SHA224;
+ break;
+ case EIP93_HASH_SHA1:
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_HASH_SHA1;
+ break;
+ case EIP93_HASH_MD5:
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_HASH_MD5;
+ break;
+ default:
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_HASH_NULL;
+ }
+
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_PAD_ZERO;
+
+ switch ((flags & EIP93_MODE_MASK)) {
+ case EIP93_MODE_CBC:
+ sa_record->sa_cmd1_word |= EIP93_SA_CMD_CHIPER_MODE_CBC;
+ break;
+ case EIP93_MODE_CTR:
+ sa_record->sa_cmd1_word |= EIP93_SA_CMD_CHIPER_MODE_CTR;
+ break;
+ case EIP93_MODE_ECB:
+ sa_record->sa_cmd1_word |= EIP93_SA_CMD_CHIPER_MODE_ECB;
+ break;
+ }
+
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_DIGEST_3WORD;
+ if (IS_HASH(flags)) {
+ sa_record->sa_cmd1_word |= EIP93_SA_CMD_COPY_PAD;
+ sa_record->sa_cmd1_word |= EIP93_SA_CMD_COPY_DIGEST;
+ }
+
+ if (IS_HMAC(flags)) {
+ sa_record->sa_cmd1_word |= EIP93_SA_CMD_HMAC;
+ sa_record->sa_cmd1_word |= EIP93_SA_CMD_COPY_HEADER;
+ }
+
+ sa_record->sa_spi = 0x0;
+ sa_record->sa_seqmum_mask[0] = 0xFFFFFFFF;
+ sa_record->sa_seqmum_mask[1] = 0x0;
+}
+
+/*
+ * Poor mans Scatter/gather function:
+ * Create a Descriptor for every segment to avoid copying buffers.
+ * For performance better to wait for hardware to perform multiple DMA
+ */
+static int eip93_scatter_combine(struct eip93_device *mtk,
+ struct eip93_cipher_reqctx *rctx,
+ u32 datalen, u32 split, int offsetin)
+{
+ struct eip93_descriptor *cdesc = rctx->cdesc;
+ struct scatterlist *sgsrc = rctx->sg_src;
+ struct scatterlist *sgdst = rctx->sg_dst;
+ unsigned int remainin = sg_dma_len(sgsrc);
+ unsigned int remainout = sg_dma_len(sgdst);
+ dma_addr_t saddr = sg_dma_address(sgsrc);
+ dma_addr_t daddr = sg_dma_address(sgdst);
+ dma_addr_t state_addr;
+ u32 src_addr, dst_addr, len, n;
+ bool nextin = false;
+ bool nextout = false;
+ int offsetout = 0;
+ int err;
+
+ if (IS_ECB(rctx->flags))
+ rctx->sa_state_base = 0;
+
+ if (split < datalen) {
+ state_addr = rctx->sa_state_ctr_base;
+ n = split;
+ } else {
+ state_addr = rctx->sa_state_base;
+ n = datalen;
+ }
+
+ do {
+ if (nextin) {
+ sgsrc = sg_next(sgsrc);
+ remainin = sg_dma_len(sgsrc);
+ if (remainin == 0)
+ continue;
+
+ saddr = sg_dma_address(sgsrc);
+ offsetin = 0;
+ nextin = false;
+ }
+
+ if (nextout) {
+ sgdst = sg_next(sgdst);
+ remainout = sg_dma_len(sgdst);
+ if (remainout == 0)
+ continue;
+
+ daddr = sg_dma_address(sgdst);
+ offsetout = 0;
+ nextout = false;
+ }
+ src_addr = saddr + offsetin;
+ dst_addr = daddr + offsetout;
+
+ if (remainin == remainout) {
+ len = remainin;
+ if (len > n) {
+ len = n;
+ remainin -= n;
+ remainout -= n;
+ offsetin += n;
+ offsetout += n;
+ } else {
+ nextin = true;
+ nextout = true;
+ }
+ } else if (remainin < remainout) {
+ len = remainin;
+ if (len > n) {
+ len = n;
+ remainin -= n;
+ remainout -= n;
+ offsetin += n;
+ offsetout += n;
+ } else {
+ offsetout += len;
+ remainout -= len;
+ nextin = true;
+ }
+ } else {
+ len = remainout;
+ if (len > n) {
+ len = n;
+ remainin -= n;
+ remainout -= n;
+ offsetin += n;
+ offsetout += n;
+ } else {
+ offsetin += len;
+ remainin -= len;
+ nextout = true;
+ }
+ }
+ n -= len;
+
+ cdesc->src_addr = src_addr;
+ cdesc->dst_addr = dst_addr;
+ cdesc->state_addr = state_addr;
+ cdesc->pe_length_word = FIELD_PREP(EIP93_PE_LENGTH_HOST_PE_READY,
+ EIP93_PE_LENGTH_HOST_READY);
+ cdesc->pe_length_word |= FIELD_PREP(EIP93_PE_LENGTH_LENGTH, len);
+
+ if (n == 0) {
+ n = datalen - split;
+ split = datalen;
+ state_addr = rctx->sa_state_base;
+ }
+
+ if (n == 0)
+ cdesc->user_id |= FIELD_PREP(EIP93_PE_USER_ID_DESC_FLAGS,
+ EIP93_DESC_LAST);
+
+ /*
+ * Loop - Delay - No need to rollback
+ * Maybe refine by slowing down at EIP93_RING_BUSY
+ */
+again:
+ err = eip93_put_descriptor(mtk, cdesc);
+ if (err) {
+ usleep_range(EIP93_RING_BUSY_DELAY,
+ EIP93_RING_BUSY_DELAY * 2);
+ goto again;
+ }
+ /* Writing new descriptor count starts DMA action */
+ writel(1, mtk->base + EIP93_REG_PE_CD_COUNT);
+ } while (n);
+
+ return -EINPROGRESS;
+}
+
+int eip93_send_req(struct crypto_async_request *async,
+ const u8 *reqiv, struct eip93_cipher_reqctx *rctx)
+{
+ struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(async->tfm);
+ struct eip93_device *mtk = ctx->mtk;
+ struct scatterlist *src = rctx->sg_src;
+ struct scatterlist *dst = rctx->sg_dst;
+ struct sa_state *sa_state;
+ struct eip93_descriptor cdesc;
+ u32 flags = rctx->flags;
+ int offsetin = 0, err;
+ u32 datalen = rctx->assoclen + rctx->textsize;
+ u32 split = datalen;
+ u32 start, end, ctr, blocks;
+ u32 iv[AES_BLOCK_SIZE / sizeof(u32)];
+ int crypto_async_idr;
+
+ rctx->sa_state_ctr = NULL;
+ rctx->sa_state = NULL;
+
+ if (IS_ECB(flags))
+ goto skip_iv;
+
+ memcpy(iv, reqiv, rctx->ivsize);
+
+ rctx->sa_state = kzalloc(sizeof(*rctx->sa_state), GFP_KERNEL);
+ if (!rctx->sa_state)
+ return -ENOMEM;
+
+ sa_state = rctx->sa_state;
+
+ memcpy(sa_state->state_iv, iv, rctx->ivsize);
+ if (IS_RFC3686(flags)) {
+ sa_state->state_iv[0] = ctx->sa_nonce;
+ sa_state->state_iv[1] = iv[0];
+ sa_state->state_iv[2] = iv[1];
+ sa_state->state_iv[3] = (u32 __force)cpu_to_be32(0x1);
+ } else if (!IS_HMAC(flags) && IS_CTR(flags)) {
+ /* Compute data length. */
+ blocks = DIV_ROUND_UP(rctx->textsize, AES_BLOCK_SIZE);
+ ctr = be32_to_cpu((__be32 __force)iv[3]);
+ /* Check 32bit counter overflow. */
+ start = ctr;
+ end = start + blocks - 1;
+ if (end < start) {
+ split = AES_BLOCK_SIZE * -start;
+ /*
+ * Increment the counter manually to cope with
+ * the hardware counter overflow.
+ */
+ iv[3] = 0xffffffff;
+ crypto_inc((u8 *)iv, AES_BLOCK_SIZE);
+
+ rctx->sa_state_ctr = kzalloc(sizeof(*rctx->sa_state_ctr),
+ GFP_KERNEL);
+ if (!rctx->sa_state_ctr) {
+ err = -ENOMEM;
+ goto free_sa_state;
+ }
+
+ memcpy(rctx->sa_state_ctr->state_iv, reqiv, rctx->ivsize);
+ memcpy(sa_state->state_iv, iv, rctx->ivsize);
+
+ rctx->sa_state_ctr_base = dma_map_single(mtk->dev, rctx->sa_state_ctr,
+ sizeof(*rctx->sa_state_ctr),
+ DMA_TO_DEVICE);
+ err = dma_mapping_error(mtk->dev, rctx->sa_state_ctr_base);
+ if (err)
+ goto free_sa_state_ctr;
+ }
+ }
+
+ rctx->sa_state_base = dma_map_single(mtk->dev, rctx->sa_state,
+ sizeof(*rctx->sa_state), DMA_TO_DEVICE);
+ err = dma_mapping_error(mtk->dev, rctx->sa_state_base);
+ if (err)
+ goto free_sa_state_ctr_dma;
+
+skip_iv:
+
+ cdesc.pe_ctrl_stat_word = FIELD_PREP(EIP93_PE_CTRL_PE_READY_DES_TRING_OWN,
+ EIP93_PE_CTRL_HOST_READY);
+ cdesc.sa_addr = rctx->sa_record_base;
+ cdesc.arc4_addr = 0;
+
+ scoped_guard(spinlock_bh, &mtk->ring->idr_lock)
+ crypto_async_idr = idr_alloc(&mtk->ring->crypto_async_idr, async, 0,
+ EIP93_RING_NUM - 1, GFP_ATOMIC);
+
+ cdesc.user_id = FIELD_PREP(EIP93_PE_USER_ID_CRYPTO_IDR, (u16)crypto_async_idr) |
+ FIELD_PREP(EIP93_PE_USER_ID_DESC_FLAGS, rctx->desc_flags);
+
+ rctx->cdesc = &cdesc;
+
+ /* map DMA_BIDIRECTIONAL to invalidate cache on destination
+ * implies __dma_cache_wback_inv
+ */
+ if (!dma_map_sg(mtk->dev, dst, rctx->dst_nents, DMA_BIDIRECTIONAL)) {
+ err = -ENOMEM;
+ goto free_sa_state_ctr_dma;
+ }
+
+ if (src != dst &&
+ !dma_map_sg(mtk->dev, src, rctx->src_nents, DMA_TO_DEVICE)) {
+ err = -ENOMEM;
+ goto free_sg_dma;
+ }
+
+ return eip93_scatter_combine(mtk, rctx, datalen, split, offsetin);
+
+free_sg_dma:
+ dma_unmap_sg(mtk->dev, dst, rctx->dst_nents, DMA_BIDIRECTIONAL);
+free_sa_state_ctr_dma:
+ if (rctx->sa_state_ctr)
+ dma_unmap_single(mtk->dev, rctx->sa_state_ctr_base,
+ sizeof(*rctx->sa_state_ctr),
+ DMA_TO_DEVICE);
+free_sa_state_ctr:
+ kfree(rctx->sa_state_ctr);
+ if (rctx->sa_state)
+ dma_unmap_single(mtk->dev, rctx->sa_state_base,
+ sizeof(*rctx->sa_state),
+ DMA_TO_DEVICE);
+free_sa_state:
+ kfree(rctx->sa_state);
+
+ return err;
+}
+
+void eip93_unmap_dma(struct eip93_device *mtk, struct eip93_cipher_reqctx *rctx,
+ struct scatterlist *reqsrc, struct scatterlist *reqdst)
+{
+ u32 len = rctx->assoclen + rctx->textsize;
+ u32 authsize = rctx->authsize;
+ u32 flags = rctx->flags;
+ u32 *otag;
+ int i;
+
+ if (rctx->sg_src == rctx->sg_dst) {
+ dma_unmap_sg(mtk->dev, rctx->sg_dst, rctx->dst_nents,
+ DMA_BIDIRECTIONAL);
+ goto process_tag;
+ }
+
+ dma_unmap_sg(mtk->dev, rctx->sg_src, rctx->src_nents,
+ DMA_TO_DEVICE);
+
+ if (rctx->sg_src != reqsrc)
+ eip93_free_sg_copy(len + rctx->authsize, &rctx->sg_src);
+
+ dma_unmap_sg(mtk->dev, rctx->sg_dst, rctx->dst_nents,
+ DMA_BIDIRECTIONAL);
+
+ /* SHA tags need conversion from net-to-host */
+process_tag:
+ if (IS_DECRYPT(flags))
+ authsize = 0;
+
+ if (authsize) {
+ if (!IS_HASH_MD5(flags)) {
+ otag = sg_virt(rctx->sg_dst) + len;
+ for (i = 0; i < (authsize / 4); i++)
+ otag[i] = be32_to_cpu((__be32 __force)otag[i]);
+ }
+ }
+
+ if (rctx->sg_dst != reqdst) {
+ sg_copy_from_buffer(reqdst, sg_nents(reqdst),
+ sg_virt(rctx->sg_dst), len + authsize);
+ eip93_free_sg_copy(len + rctx->authsize, &rctx->sg_dst);
+ }
+}
+
+void eip93_handle_result(struct eip93_device *mtk, struct eip93_cipher_reqctx *rctx,
+ u8 *reqiv)
+{
+ if (rctx->sa_state_ctr)
+ dma_unmap_single(mtk->dev, rctx->sa_state_ctr_base,
+ sizeof(*rctx->sa_state_ctr),
+ DMA_FROM_DEVICE);
+
+ if (rctx->sa_state)
+ dma_unmap_single(mtk->dev, rctx->sa_state_base,
+ sizeof(*rctx->sa_state),
+ DMA_FROM_DEVICE);
+
+ if (!IS_ECB(rctx->flags))
+ memcpy(reqiv, rctx->sa_state->state_iv, rctx->ivsize);
+
+ kfree(rctx->sa_state_ctr);
+ kfree(rctx->sa_state);
+}
+
+int eip93_hmac_setkey(u32 ctx_flags, const u8 *key, unsigned int keylen,
+ unsigned int hashlen, u8 *dest_ipad, u8 *dest_opad,
+ bool skip_ipad)
+{
+ u8 ipad[SHA256_BLOCK_SIZE], opad[SHA256_BLOCK_SIZE];
+ struct crypto_ahash *ahash_tfm;
+ struct eip93_hash_reqctx *rctx;
+ struct ahash_request *req;
+ DECLARE_CRYPTO_WAIT(wait);
+ struct scatterlist sg[1];
+ const char *alg_name;
+ int i, ret;
+
+ switch (ctx_flags & EIP93_HASH_MASK) {
+ case EIP93_HASH_SHA256:
+ alg_name = "sha256-eip93";
+ break;
+ case EIP93_HASH_SHA224:
+ alg_name = "sha224-eip93";
+ break;
+ case EIP93_HASH_SHA1:
+ alg_name = "sha1-eip93";
+ break;
+ case EIP93_HASH_MD5:
+ alg_name = "md5-eip93";
+ break;
+ default: /* Impossible */
+ return -EINVAL;
+ }
+
+ ahash_tfm = crypto_alloc_ahash(alg_name, 0, 0);
+ if (IS_ERR(ahash_tfm))
+ return PTR_ERR(ahash_tfm);
+
+ req = ahash_request_alloc(ahash_tfm, GFP_ATOMIC);
+ if (!req) {
+ ret = -ENOMEM;
+ goto err_ahash;
+ }
+
+ rctx = ahash_request_ctx_dma(req);
+ crypto_init_wait(&wait);
+ ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ crypto_req_done, &wait);
+
+ /* Hash the key if > SHA256_BLOCK_SIZE */
+ if (keylen > SHA256_BLOCK_SIZE) {
+ sg_init_one(&sg[0], key, keylen);
+
+ ahash_request_set_crypt(req, sg, ipad, keylen);
+ ret = crypto_wait_req(crypto_ahash_digest(req), &wait);
+ if (ret)
+ goto err_req;
+
+ keylen = hashlen;
+ } else {
+ memcpy(ipad, key, keylen);
+ }
+
+ /* Copy to opad */
+ memset(ipad + keylen, 0, SHA256_BLOCK_SIZE - keylen);
+ memcpy(opad, ipad, SHA256_BLOCK_SIZE);
+
+ /* Pad with HMAC constants */
+ for (i = 0; i < SHA256_BLOCK_SIZE; i++) {
+ ipad[i] ^= HMAC_IPAD_VALUE;
+ opad[i] ^= HMAC_OPAD_VALUE;
+ }
+
+ if (skip_ipad) {
+ memcpy(dest_ipad, ipad, SHA256_BLOCK_SIZE);
+ } else {
+ /* Hash ipad */
+ sg_init_one(&sg[0], ipad, SHA256_BLOCK_SIZE);
+ ahash_request_set_crypt(req, sg, dest_ipad, SHA256_BLOCK_SIZE);
+ ret = crypto_ahash_init(req);
+ if (ret)
+ goto err_req;
+
+ /* Disable HASH_FINALIZE for ipad hash */
+ rctx->partial_hash = true;
+
+ ret = crypto_wait_req(crypto_ahash_finup(req), &wait);
+ if (ret)
+ goto err_req;
+ }
+
+ /* Hash opad */
+ sg_init_one(&sg[0], opad, SHA256_BLOCK_SIZE);
+ ahash_request_set_crypt(req, sg, dest_opad, SHA256_BLOCK_SIZE);
+ ret = crypto_ahash_init(req);
+ if (ret)
+ goto err_req;
+
+ /* Disable HASH_FINALIZE for opad hash */
+ rctx->partial_hash = true;
+
+ ret = crypto_wait_req(crypto_ahash_finup(req), &wait);
+ if (ret)
+ goto err_req;
+
+ if (!IS_HASH_MD5(ctx_flags)) {
+ for (i = 0; i < SHA256_DIGEST_SIZE / sizeof(u32); i++) {
+ u32 *ipad_hash = (u32 *)dest_ipad;
+ u32 *opad_hash = (u32 *)dest_opad;
+
+ if (!skip_ipad)
+ ipad_hash[i] = (u32 __force)cpu_to_be32(ipad_hash[i]);
+ opad_hash[i] = (u32 __force)cpu_to_be32(opad_hash[i]);
+ }
+ }
+
+err_req:
+ ahash_request_free(req);
+err_ahash:
+ crypto_free_ahash(ahash_tfm);
+
+ return ret;
+}
new file mode 100644
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+
+#ifndef _EIP93_COMMON_H_
+#define _EIP93_COMMON_H_
+
+void *eip93_get_descriptor(struct eip93_device *mtk);
+int eip93_put_descriptor(struct eip93_device *mtk, struct eip93_descriptor *desc);
+
+void eip93_set_sa_record(struct sa_record *sa_record, const unsigned int keylen,
+ const u32 flags);
+
+int eip93_parse_ctrl_stat_err(struct eip93_device *mtk, int err);
+
+int eip93_hmac_setkey(u32 ctx_flags, const u8 *key, unsigned int keylen,
+ unsigned int hashlen, u8 *ipad, u8 *opad,
+ bool skip_ipad);
+
+#endif /* _EIP93_COMMON_H_ */
new file mode 100644
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+#ifndef _EIP93_DES_H_
+#define _EIP93_DES_H_
+
+extern struct eip93_alg_template eip93_alg_ecb_des;
+extern struct eip93_alg_template eip93_alg_cbc_des;
+extern struct eip93_alg_template eip93_alg_ecb_des3_ede;
+extern struct eip93_alg_template eip93_alg_cbc_des3_ede;
+
+#endif /* _EIP93_DES_H_ */
new file mode 100644
@@ -0,0 +1,866 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2024
+ *
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+
+#include <crypto/sha1.h>
+#include <crypto/sha2.h>
+#include <crypto/md5.h>
+#include <crypto/hmac.h>
+#include <linux/dma-mapping.h>
+#include <linux/delay.h>
+
+#include "eip93-cipher.h"
+#include "eip93-hash.h"
+#include "eip93-main.h"
+#include "eip93-common.h"
+#include "eip93-regs.h"
+
+static void eip93_hash_free_data_blocks(struct ahash_request *req)
+{
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+ struct eip93_hash_ctx *ctx = crypto_ahash_ctx(ahash);
+ struct eip93_device *mtk = ctx->mtk;
+ struct mkt_hash_block *block, *tmp;
+
+ list_for_each_entry_safe(block, tmp, &rctx->blocks, list) {
+ dma_unmap_single(mtk->dev, block->data_dma,
+ SHA256_BLOCK_SIZE, DMA_TO_DEVICE);
+ kfree(block);
+ }
+ if (!list_empty(&rctx->blocks))
+ INIT_LIST_HEAD(&rctx->blocks);
+
+ if (rctx->finalize)
+ dma_unmap_single(mtk->dev, rctx->data_dma,
+ rctx->data_used,
+ DMA_TO_DEVICE);
+}
+
+static void eip93_hash_free_sa_record(struct ahash_request *req)
+{
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+ struct eip93_hash_ctx *ctx = crypto_ahash_ctx(ahash);
+ struct eip93_device *mtk = ctx->mtk;
+
+ if (IS_HMAC(ctx->flags))
+ dma_unmap_single(mtk->dev, rctx->sa_record_hmac_base,
+ sizeof(rctx->sa_record_hmac), DMA_TO_DEVICE);
+
+ dma_unmap_single(mtk->dev, rctx->sa_record_base,
+ sizeof(rctx->sa_record), DMA_TO_DEVICE);
+}
+
+void eip93_hash_handle_result(struct crypto_async_request *async, int err)
+{
+ struct ahash_request *req = ahash_request_cast(async);
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+ struct eip93_hash_ctx *ctx = crypto_ahash_ctx(ahash);
+ int digestsize = crypto_ahash_digestsize(ahash);
+ struct sa_state *sa_state = &rctx->sa_state;
+ struct eip93_device *mtk = ctx->mtk;
+ int i;
+
+ dma_unmap_single(mtk->dev, rctx->sa_state_base,
+ sizeof(*sa_state), DMA_FROM_DEVICE);
+
+ /*
+ * With partial_hash assume SHA256_DIGEST_SIZE buffer is passed.
+ * This is to handle SHA224 that have a 32 byte intermediate digest.
+ */
+ if (rctx->partial_hash)
+ digestsize = SHA256_DIGEST_SIZE;
+
+ if (rctx->finalize || rctx->partial_hash) {
+ /* bytes needs to be swapped for req->result */
+ if (!IS_HASH_MD5(ctx->flags)) {
+ for (i = 0; i < digestsize / sizeof(u32); i++) {
+ u32 *digest = (u32 *)sa_state->state_i_digest;
+
+ digest[i] = be32_to_cpu((__be32 __force)digest[i]);
+ }
+ }
+
+ memcpy(req->result, sa_state->state_i_digest, digestsize);
+ }
+
+ eip93_hash_free_sa_record(req);
+ eip93_hash_free_data_blocks(req);
+
+ ahash_request_complete(req, err);
+}
+
+static void eip93_hash_init_sa_state_digest(u32 hash, u8 *digest)
+{
+ u32 sha256_init[] = { SHA256_H0, SHA256_H1, SHA256_H2, SHA256_H3,
+ SHA256_H4, SHA256_H5, SHA256_H6, SHA256_H7 };
+ u32 sha224_init[] = { SHA224_H0, SHA224_H1, SHA224_H2, SHA224_H3,
+ SHA224_H4, SHA224_H5, SHA224_H6, SHA224_H7 };
+ u32 sha1_init[] = { SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4 };
+ u32 md5_init[] = { MD5_H0, MD5_H1, MD5_H2, MD5_H3 };
+
+ /* Init HASH constant */
+ switch (hash) {
+ case EIP93_HASH_SHA256:
+ memcpy(digest, sha256_init, sizeof(sha256_init));
+ return;
+ case EIP93_HASH_SHA224:
+ memcpy(digest, sha224_init, sizeof(sha224_init));
+ return;
+ case EIP93_HASH_SHA1:
+ memcpy(digest, sha1_init, sizeof(sha1_init));
+ return;
+ case EIP93_HASH_MD5:
+ memcpy(digest, md5_init, sizeof(md5_init));
+ return;
+ default: /* Impossible */
+ return;
+ }
+}
+
+static void eip93_hash_export_sa_state(struct ahash_request *req,
+ struct eip93_hash_export_state *state)
+{
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct sa_state *sa_state = &rctx->sa_state;
+
+ /*
+ * EIP93 have special handling for state_byte_cnt in sa_state.
+ * Even if a zero packet is passed (and a BADMSG is returned),
+ * state_byte_cnt is incremented to the digest handled (with the hash
+ * primitive). This is problematic with export/import as EIP93
+ * expect 0 state_byte_cnt for the very first iteration.
+ */
+ if (!rctx->len)
+ memset(state->state_len, 0, sizeof(u32) * 2);
+ else
+ memcpy(state->state_len, sa_state->state_byte_cnt,
+ sizeof(u32) * 2);
+ memcpy(state->state_hash, sa_state->state_i_digest,
+ SHA256_DIGEST_SIZE);
+ state->len = rctx->len;
+ state->data_used = rctx->data_used;
+}
+
+static void __eip93_hash_init(struct ahash_request *req)
+{
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+ struct eip93_hash_ctx *ctx = crypto_ahash_ctx(ahash);
+ struct sa_record *sa_record = &rctx->sa_record;
+ int digestsize;
+
+ digestsize = crypto_ahash_digestsize(ahash);
+
+ eip93_set_sa_record(sa_record, 0, ctx->flags);
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_HASH_FROM_STATE;
+ sa_record->sa_cmd0_word |= EIP93_SA_CMD_SAVE_HASH;
+ sa_record->sa_cmd0_word &= ~EIP93_SA_CMD_OPCODE;
+ sa_record->sa_cmd0_word |= FIELD_PREP(EIP93_SA_CMD_OPCODE,
+ EIP93_SA_CMD_OPCODE_BASIC_OUT_HASH);
+ sa_record->sa_cmd0_word &= ~EIP93_SA_CMD_DIGEST_LENGTH;
+ sa_record->sa_cmd0_word |= FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH,
+ digestsize / sizeof(u32));
+
+ /*
+ * HMAC special handling
+ * Enabling CMD_HMAC force the inner hash to be always finalized.
+ * This cause problems on handling message > 64 byte as we
+ * need to produce intermediate inner hash on sending intermediate
+ * 64 bytes blocks.
+ *
+ * To handle this, enable CMD_HMAC only on the last block.
+ * We make a duplicate of sa_record and on the last descriptor,
+ * we pass a dedicated sa_record with CMD_HMAC enabled to make
+ * EIP93 apply the outer hash.
+ */
+ if (IS_HMAC(ctx->flags)) {
+ struct sa_record *sa_record_hmac = &rctx->sa_record_hmac;
+
+ memcpy(sa_record_hmac, sa_record, sizeof(*sa_record));
+ /* Copy pre-hashed opad for HMAC */
+ memcpy(sa_record_hmac->sa_o_digest, ctx->opad, SHA256_DIGEST_SIZE);
+
+ /* Disable HMAC for hash normal sa_record */
+ sa_record->sa_cmd1_word &= ~EIP93_SA_CMD_HMAC;
+ }
+
+ rctx->len = 0;
+ rctx->data_used = 0;
+ rctx->partial_hash = false;
+ rctx->finalize = false;
+ INIT_LIST_HEAD(&rctx->blocks);
+}
+
+static int eip93_send_hash_req(struct crypto_async_request *async, u8 *data,
+ dma_addr_t *data_dma, u32 len, bool last)
+{
+ struct ahash_request *req = ahash_request_cast(async);
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+ struct eip93_hash_ctx *ctx = crypto_ahash_ctx(ahash);
+ struct eip93_device *mtk = ctx->mtk;
+ struct eip93_descriptor cdesc = { };
+ dma_addr_t src_addr;
+ int ret;
+
+ /* Map block data to DMA */
+ src_addr = dma_map_single(mtk->dev, data, len, DMA_TO_DEVICE);
+ ret = dma_mapping_error(mtk->dev, src_addr);
+ if (ret)
+ return ret;
+
+ cdesc.pe_ctrl_stat_word = FIELD_PREP(EIP93_PE_CTRL_PE_READY_DES_TRING_OWN,
+ EIP93_PE_CTRL_HOST_READY);
+ cdesc.sa_addr = rctx->sa_record_base;
+ cdesc.arc4_addr = 0;
+
+ cdesc.state_addr = rctx->sa_state_base;
+ cdesc.src_addr = src_addr;
+ cdesc.pe_length_word = FIELD_PREP(EIP93_PE_LENGTH_HOST_PE_READY,
+ EIP93_PE_LENGTH_HOST_READY);
+ cdesc.pe_length_word |= FIELD_PREP(EIP93_PE_LENGTH_LENGTH,
+ len);
+
+ cdesc.user_id |= FIELD_PREP(EIP93_PE_USER_ID_DESC_FLAGS, EIP93_DESC_HASH);
+
+ if (last) {
+ int crypto_async_idr;
+
+ if (rctx->finalize && !rctx->partial_hash) {
+ /* For last block, pass sa_record with CMD_HMAC enabled */
+ if (IS_HMAC(ctx->flags)) {
+ struct sa_record *sa_record_hmac = &rctx->sa_record_hmac;
+
+ rctx->sa_record_hmac_base = dma_map_single(mtk->dev,
+ sa_record_hmac,
+ sizeof(*sa_record_hmac),
+ DMA_TO_DEVICE);
+ ret = dma_mapping_error(mtk->dev, rctx->sa_record_hmac_base);
+ if (ret)
+ return ret;
+
+ cdesc.sa_addr = rctx->sa_record_hmac_base;
+ }
+
+ cdesc.pe_ctrl_stat_word |= EIP93_PE_CTRL_PE_HASH_FINAL;
+ }
+
+ scoped_guard(spinlock_bh, &mtk->ring->idr_lock)
+ crypto_async_idr = idr_alloc(&mtk->ring->crypto_async_idr, async, 0,
+ EIP93_RING_NUM - 1, GFP_ATOMIC);
+
+ cdesc.user_id |= FIELD_PREP(EIP93_PE_USER_ID_CRYPTO_IDR, (u16)crypto_async_idr) |
+ FIELD_PREP(EIP93_PE_USER_ID_DESC_FLAGS, EIP93_DESC_LAST);
+ }
+
+again:
+ ret = eip93_put_descriptor(mtk, &cdesc);
+ if (ret) {
+ usleep_range(EIP93_RING_BUSY_DELAY,
+ EIP93_RING_BUSY_DELAY * 2);
+ goto again;
+ }
+
+ /* Writing new descriptor count starts DMA action */
+ writel(1, mtk->base + EIP93_REG_PE_CD_COUNT);
+
+ *data_dma = src_addr;
+ return 0;
+}
+
+static int eip93_hash_init(struct ahash_request *req)
+{
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+ struct eip93_hash_ctx *ctx = crypto_ahash_ctx(ahash);
+ struct sa_state *sa_state = &rctx->sa_state;
+
+ memset(sa_state->state_byte_cnt, 0, sizeof(u32) * 2);
+ eip93_hash_init_sa_state_digest(ctx->flags & EIP93_HASH_MASK,
+ sa_state->state_i_digest);
+
+ __eip93_hash_init(req);
+
+ /* For HMAC setup the initial block for ipad */
+ if (IS_HMAC(ctx->flags)) {
+ memcpy(rctx->data, ctx->ipad, SHA256_BLOCK_SIZE);
+
+ rctx->data_used = SHA256_BLOCK_SIZE;
+ rctx->len += SHA256_BLOCK_SIZE;
+ }
+
+ return 0;
+}
+
+/*
+ * With complete_req true, we wait for the engine to consume all the block in list,
+ * else we just queue the block to the engine as final() will wait. This is useful
+ * for finup().
+ */
+static int __eip93_hash_update(struct ahash_request *req, bool complete_req)
+{
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct crypto_async_request *async = &req->base;
+ unsigned int read, to_consume = req->nbytes;
+ unsigned int max_read, consumed = 0;
+ struct mkt_hash_block *block;
+ bool wait_req = false;
+ int offset;
+ int ret;
+
+ /* Get the offset and available space to fill req data */
+ offset = rctx->data_used;
+ max_read = SHA256_BLOCK_SIZE - offset;
+
+ /* Consume req in block of SHA256_BLOCK_SIZE.
+ * to_read is initially set to space available in the req data
+ * and then reset to SHA256_BLOCK_SIZE.
+ */
+ while (to_consume > max_read) {
+ block = kzalloc(sizeof(*block), GFP_ATOMIC);
+ if (!block) {
+ ret = -ENOMEM;
+ goto free_blocks;
+ }
+
+ read = sg_pcopy_to_buffer(req->src, sg_nents(req->src),
+ block->data + offset,
+ max_read, consumed);
+
+ /*
+ * For first iteration only, copy req data to block
+ * and reset offset and max_read for next iteration.
+ */
+ if (offset > 0) {
+ memcpy(block->data, rctx->data, offset);
+ offset = 0;
+ max_read = SHA256_BLOCK_SIZE;
+ }
+
+ list_add(&block->list, &rctx->blocks);
+ to_consume -= read;
+ consumed += read;
+ }
+
+ /* Write the remaining data to req data */
+ read = sg_pcopy_to_buffer(req->src, sg_nents(req->src),
+ rctx->data + offset, to_consume,
+ consumed);
+ rctx->data_used = offset + read;
+
+ /* Update counter with processed bytes */
+ rctx->len += read + consumed;
+
+ /* Consume all the block added to list */
+ list_for_each_entry_reverse(block, &rctx->blocks, list) {
+ wait_req = complete_req &&
+ list_is_first(&block->list, &rctx->blocks);
+
+ ret = eip93_send_hash_req(async, block->data,
+ &block->data_dma,
+ SHA256_BLOCK_SIZE, wait_req);
+ if (ret)
+ goto free_blocks;
+ }
+
+ return wait_req ? -EINPROGRESS : 0;
+
+free_blocks:
+ eip93_hash_free_data_blocks(req);
+
+ return ret;
+}
+
+static int eip93_hash_update(struct ahash_request *req)
+{
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+ struct eip93_hash_ctx *ctx = crypto_ahash_ctx(ahash);
+ struct sa_record *sa_record = &rctx->sa_record;
+ struct sa_state *sa_state = &rctx->sa_state;
+ struct eip93_device *mtk = ctx->mtk;
+ int ret;
+
+ if (!req->nbytes)
+ return 0;
+
+ rctx->sa_state_base = dma_map_single(mtk->dev, sa_state,
+ sizeof(*sa_state),
+ DMA_TO_DEVICE);
+ ret = dma_mapping_error(mtk->dev, rctx->sa_state_base);
+ if (ret)
+ return ret;
+
+ rctx->sa_record_base = dma_map_single(mtk->dev, sa_record,
+ sizeof(*sa_record),
+ DMA_TO_DEVICE);
+ ret = dma_mapping_error(mtk->dev, rctx->sa_record_base);
+ if (ret)
+ goto free_sa_state;
+
+ ret = __eip93_hash_update(req, true);
+ if (ret && ret != -EINPROGRESS)
+ goto free_sa_record;
+
+ return ret;
+
+free_sa_record:
+ dma_unmap_single(mtk->dev, rctx->sa_record_base,
+ sizeof(*sa_record), DMA_TO_DEVICE);
+
+free_sa_state:
+ dma_unmap_single(mtk->dev, rctx->sa_state_base,
+ sizeof(*sa_state), DMA_TO_DEVICE);
+
+ return ret;
+}
+
+/*
+ * With map_data true, we map the sa_record and sa_state. This is needed
+ * for finup() as the they are mapped before calling update()
+ */
+static int __eip93_hash_final(struct ahash_request *req, bool map_dma)
+{
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+ struct eip93_hash_ctx *ctx = crypto_ahash_ctx(ahash);
+ struct crypto_async_request *async = &req->base;
+ struct sa_record *sa_record = &rctx->sa_record;
+ struct sa_state *sa_state = &rctx->sa_state;
+ struct eip93_device *mtk = ctx->mtk;
+ int ret;
+
+ /* EIP93 can't handle zero bytes hash */
+ if (!rctx->len && !IS_HMAC(ctx->flags)) {
+ switch ((ctx->flags & EIP93_HASH_MASK)) {
+ case EIP93_HASH_SHA256:
+ memcpy(req->result, sha256_zero_message_hash,
+ SHA256_DIGEST_SIZE);
+ break;
+ case EIP93_HASH_SHA224:
+ memcpy(req->result, sha224_zero_message_hash,
+ SHA224_DIGEST_SIZE);
+ break;
+ case EIP93_HASH_SHA1:
+ memcpy(req->result, sha1_zero_message_hash,
+ SHA1_DIGEST_SIZE);
+ break;
+ case EIP93_HASH_MD5:
+ memcpy(req->result, md5_zero_message_hash,
+ MD5_DIGEST_SIZE);
+ break;
+ default: /* Impossible */
+ return -EINVAL;
+ }
+
+ return 0;
+ }
+
+ /* Signal interrupt from engine is for last block */
+ rctx->finalize = true;
+
+ if (map_dma) {
+ rctx->sa_state_base = dma_map_single(mtk->dev, sa_state,
+ sizeof(*sa_state),
+ DMA_TO_DEVICE);
+ ret = dma_mapping_error(mtk->dev, rctx->sa_state_base);
+ if (ret)
+ return ret;
+
+ rctx->sa_record_base = dma_map_single(mtk->dev, sa_record,
+ sizeof(*sa_record),
+ DMA_TO_DEVICE);
+ ret = dma_mapping_error(mtk->dev, rctx->sa_record_base);
+ if (ret)
+ goto free_sa_state;
+ }
+
+ /* Send last block */
+ ret = eip93_send_hash_req(async, rctx->data, &rctx->data_dma,
+ rctx->data_used, true);
+ if (ret)
+ goto free_blocks;
+
+ return -EINPROGRESS;
+
+free_blocks:
+ eip93_hash_free_data_blocks(req);
+
+ dma_unmap_single(mtk->dev, rctx->sa_record_base,
+ sizeof(*sa_record), DMA_TO_DEVICE);
+
+free_sa_state:
+ dma_unmap_single(mtk->dev, rctx->sa_state_base,
+ sizeof(*sa_state), DMA_TO_DEVICE);
+
+ return ret;
+}
+
+static int eip93_hash_final(struct ahash_request *req)
+{
+ return __eip93_hash_final(req, true);
+}
+
+static int eip93_hash_finup(struct ahash_request *req)
+{
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+ struct eip93_hash_ctx *ctx = crypto_ahash_ctx(ahash);
+ struct sa_record *sa_record = &rctx->sa_record;
+ struct sa_state *sa_state = &rctx->sa_state;
+ struct eip93_device *mtk = ctx->mtk;
+ int ret;
+
+ if (rctx->len + req->nbytes || IS_HMAC(ctx->flags)) {
+ rctx->sa_state_base = dma_map_single(mtk->dev, sa_state,
+ sizeof(*sa_state),
+ DMA_TO_DEVICE);
+ ret = dma_mapping_error(mtk->dev, rctx->sa_state_base);
+ if (ret)
+ return ret;
+
+ rctx->sa_record_base = dma_map_single(mtk->dev, sa_record,
+ sizeof(*sa_record),
+ DMA_TO_DEVICE);
+ ret = dma_mapping_error(mtk->dev, rctx->sa_record_base);
+ if (ret)
+ goto free_sa_state;
+
+ ret = __eip93_hash_update(req, false);
+ if (ret)
+ goto free_sa_record;
+ }
+
+ return __eip93_hash_final(req, false);
+
+free_sa_record:
+ dma_unmap_single(mtk->dev, rctx->sa_record_base,
+ sizeof(*sa_record), DMA_TO_DEVICE);
+free_sa_state:
+ dma_unmap_single(mtk->dev, rctx->sa_state_base,
+ sizeof(*sa_state), DMA_TO_DEVICE);
+
+ return ret;
+}
+
+static int eip93_hash_hmac_setkey(struct crypto_ahash *ahash, const u8 *key,
+ u32 keylen)
+{
+ unsigned int digestsize = crypto_ahash_digestsize(ahash);
+ struct crypto_tfm *tfm = crypto_ahash_tfm(ahash);
+ struct eip93_hash_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ return eip93_hmac_setkey(ctx->flags, key, keylen, digestsize,
+ ctx->ipad, ctx->opad, true);
+}
+
+static int eip93_hash_cra_init(struct crypto_tfm *tfm)
+{
+ struct eip93_hash_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct eip93_alg_template *tmpl = container_of(tfm->__crt_alg,
+ struct eip93_alg_template, alg.ahash.halg.base);
+
+ crypto_ahash_set_reqsize_dma(__crypto_ahash_cast(tfm),
+ sizeof(struct eip93_hash_reqctx));
+
+ ctx->mtk = tmpl->mtk;
+ ctx->flags = tmpl->flags;
+
+ return 0;
+}
+
+static int eip93_hash_digest(struct ahash_request *req)
+{
+ int ret;
+
+ ret = eip93_hash_init(req);
+ if (ret)
+ return ret;
+
+ return eip93_hash_finup(req);
+}
+
+static int eip93_hash_import(struct ahash_request *req, const void *in)
+{
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ const struct eip93_hash_export_state *state = in;
+ struct sa_state *sa_state = &rctx->sa_state;
+
+ memcpy(sa_state->state_byte_cnt, state->state_len, sizeof(u32) * 2);
+ memcpy(sa_state->state_i_digest, state->state_hash, SHA256_DIGEST_SIZE);
+
+ __eip93_hash_init(req);
+
+ rctx->len = state->len;
+ rctx->data_used = state->data_used;
+
+ /* Skip copying data if we have nothing to copy */
+ if (rctx->len)
+ memcpy(rctx->data, state->data, rctx->data_used);
+
+ return 0;
+}
+
+static int eip93_hash_export(struct ahash_request *req, void *out)
+{
+ struct eip93_hash_reqctx *rctx = ahash_request_ctx_dma(req);
+ struct eip93_hash_export_state *state = out;
+
+ /* Save the first block in state data */
+ if (rctx->len)
+ memcpy(state->data, rctx->data, rctx->data_used);
+
+ eip93_hash_export_sa_state(req, state);
+
+ return 0;
+}
+
+struct eip93_alg_template eip93_alg_md5 = {
+ .type = EIP93_ALG_TYPE_HASH,
+ .flags = EIP93_HASH_MD5,
+ .alg.ahash = {
+ .init = eip93_hash_init,
+ .update = eip93_hash_update,
+ .final = eip93_hash_final,
+ .finup = eip93_hash_finup,
+ .digest = eip93_hash_digest,
+ .export = eip93_hash_export,
+ .import = eip93_hash_import,
+ .halg = {
+ .digestsize = MD5_DIGEST_SIZE,
+ .statesize = sizeof(struct eip93_hash_export_state),
+ .base = {
+ .cra_name = "md5",
+ .cra_driver_name = "md5-eip93",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = MD5_HMAC_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_hash_ctx),
+ .cra_init = eip93_hash_cra_init,
+ .cra_module = THIS_MODULE,
+ },
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_sha1 = {
+ .type = EIP93_ALG_TYPE_HASH,
+ .flags = EIP93_HASH_SHA1,
+ .alg.ahash = {
+ .init = eip93_hash_init,
+ .update = eip93_hash_update,
+ .final = eip93_hash_final,
+ .finup = eip93_hash_finup,
+ .digest = eip93_hash_digest,
+ .export = eip93_hash_export,
+ .import = eip93_hash_import,
+ .halg = {
+ .digestsize = SHA1_DIGEST_SIZE,
+ .statesize = sizeof(struct eip93_hash_export_state),
+ .base = {
+ .cra_name = "sha1",
+ .cra_driver_name = "sha1-eip93",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = SHA1_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_hash_ctx),
+ .cra_init = eip93_hash_cra_init,
+ .cra_module = THIS_MODULE,
+ },
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_sha224 = {
+ .type = EIP93_ALG_TYPE_HASH,
+ .flags = EIP93_HASH_SHA224,
+ .alg.ahash = {
+ .init = eip93_hash_init,
+ .update = eip93_hash_update,
+ .final = eip93_hash_final,
+ .finup = eip93_hash_finup,
+ .digest = eip93_hash_digest,
+ .export = eip93_hash_export,
+ .import = eip93_hash_import,
+ .halg = {
+ .digestsize = SHA224_DIGEST_SIZE,
+ .statesize = sizeof(struct eip93_hash_export_state),
+ .base = {
+ .cra_name = "sha224",
+ .cra_driver_name = "sha224-eip93",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = SHA224_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_hash_ctx),
+ .cra_init = eip93_hash_cra_init,
+ .cra_module = THIS_MODULE,
+ },
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_sha256 = {
+ .type = EIP93_ALG_TYPE_HASH,
+ .flags = EIP93_HASH_SHA256,
+ .alg.ahash = {
+ .init = eip93_hash_init,
+ .update = eip93_hash_update,
+ .final = eip93_hash_final,
+ .finup = eip93_hash_finup,
+ .digest = eip93_hash_digest,
+ .export = eip93_hash_export,
+ .import = eip93_hash_import,
+ .halg = {
+ .digestsize = SHA256_DIGEST_SIZE,
+ .statesize = sizeof(struct eip93_hash_export_state),
+ .base = {
+ .cra_name = "sha256",
+ .cra_driver_name = "sha256-eip93",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = SHA256_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_hash_ctx),
+ .cra_init = eip93_hash_cra_init,
+ .cra_module = THIS_MODULE,
+ },
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_hmac_md5 = {
+ .type = EIP93_ALG_TYPE_HASH,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_MD5,
+ .alg.ahash = {
+ .init = eip93_hash_init,
+ .update = eip93_hash_update,
+ .final = eip93_hash_final,
+ .finup = eip93_hash_finup,
+ .digest = eip93_hash_digest,
+ .setkey = eip93_hash_hmac_setkey,
+ .export = eip93_hash_export,
+ .import = eip93_hash_import,
+ .halg = {
+ .digestsize = MD5_DIGEST_SIZE,
+ .statesize = sizeof(struct eip93_hash_export_state),
+ .base = {
+ .cra_name = "hmac(md5)",
+ .cra_driver_name = "hmac(md5-eip93)",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = MD5_HMAC_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_hash_ctx),
+ .cra_init = eip93_hash_cra_init,
+ .cra_module = THIS_MODULE,
+ },
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_hmac_sha1 = {
+ .type = EIP93_ALG_TYPE_HASH,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA1,
+ .alg.ahash = {
+ .init = eip93_hash_init,
+ .update = eip93_hash_update,
+ .final = eip93_hash_final,
+ .finup = eip93_hash_finup,
+ .digest = eip93_hash_digest,
+ .setkey = eip93_hash_hmac_setkey,
+ .export = eip93_hash_export,
+ .import = eip93_hash_import,
+ .halg = {
+ .digestsize = SHA1_DIGEST_SIZE,
+ .statesize = sizeof(struct eip93_hash_export_state),
+ .base = {
+ .cra_name = "hmac(sha1)",
+ .cra_driver_name = "hmac(sha1-eip93)",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = SHA1_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_hash_ctx),
+ .cra_init = eip93_hash_cra_init,
+ .cra_module = THIS_MODULE,
+ },
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_hmac_sha224 = {
+ .type = EIP93_ALG_TYPE_HASH,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA224,
+ .alg.ahash = {
+ .init = eip93_hash_init,
+ .update = eip93_hash_update,
+ .final = eip93_hash_final,
+ .finup = eip93_hash_finup,
+ .digest = eip93_hash_digest,
+ .setkey = eip93_hash_hmac_setkey,
+ .export = eip93_hash_export,
+ .import = eip93_hash_import,
+ .halg = {
+ .digestsize = SHA224_DIGEST_SIZE,
+ .statesize = sizeof(struct eip93_hash_export_state),
+ .base = {
+ .cra_name = "hmac(sha224)",
+ .cra_driver_name = "hmac(sha224-eip93)",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = SHA224_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_hash_ctx),
+ .cra_init = eip93_hash_cra_init,
+ .cra_module = THIS_MODULE,
+ },
+ },
+ },
+};
+
+struct eip93_alg_template eip93_alg_hmac_sha256 = {
+ .type = EIP93_ALG_TYPE_HASH,
+ .flags = EIP93_HASH_HMAC | EIP93_HASH_SHA256,
+ .alg.ahash = {
+ .init = eip93_hash_init,
+ .update = eip93_hash_update,
+ .final = eip93_hash_final,
+ .finup = eip93_hash_finup,
+ .digest = eip93_hash_digest,
+ .setkey = eip93_hash_hmac_setkey,
+ .export = eip93_hash_export,
+ .import = eip93_hash_import,
+ .halg = {
+ .digestsize = SHA256_DIGEST_SIZE,
+ .statesize = sizeof(struct eip93_hash_export_state),
+ .base = {
+ .cra_name = "hmac(sha256)",
+ .cra_driver_name = "hmac(sha256-eip93)",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = SHA256_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct eip93_hash_ctx),
+ .cra_init = eip93_hash_cra_init,
+ .cra_module = THIS_MODULE,
+ },
+ },
+ },
+};
new file mode 100644
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+#ifndef _EIP93_HASH_H_
+#define _EIP93_HASH_H_
+
+#include <crypto/sha2.h>
+
+#include "eip93-main.h"
+#include "eip93-regs.h"
+
+struct eip93_hash_ctx {
+ struct eip93_device *mtk;
+ u32 flags;
+
+ u8 ipad[SHA256_BLOCK_SIZE] __aligned(sizeof(u32));
+ u8 opad[SHA256_DIGEST_SIZE] __aligned(sizeof(u32));
+};
+
+struct eip93_hash_reqctx {
+ /* Placement is important for DMA align */
+ struct {
+ struct sa_record sa_record;
+ struct sa_record sa_record_hmac;
+ struct sa_state sa_state;
+ } __aligned(CRYPTO_DMA_ALIGN);
+
+ dma_addr_t sa_record_base;
+ dma_addr_t sa_record_hmac_base;
+ dma_addr_t sa_state_base;
+
+ /* Don't enable HASH_FINALIZE when last block is sent */
+ bool partial_hash;
+
+ /* Set to signal interrupt is for final packet */
+ bool finalize;
+
+ /*
+ * EIP93 requires data to be accumulated in block of 64 bytes
+ * for intermediate hash calculation.
+ */
+ u64 len;
+ u32 data_used;
+
+ u8 data[SHA256_BLOCK_SIZE] __aligned(sizeof(u32));
+ dma_addr_t data_dma;
+
+ struct list_head blocks;
+};
+
+struct mkt_hash_block {
+ struct list_head list;
+ u8 data[SHA256_BLOCK_SIZE] __aligned(sizeof(u32));
+ dma_addr_t data_dma;
+};
+
+struct eip93_hash_export_state {
+ u64 len;
+ u32 data_used;
+
+ u32 state_len[2];
+ u8 state_hash[SHA256_DIGEST_SIZE] __aligned(sizeof(u32));
+
+ u8 data[SHA256_BLOCK_SIZE] __aligned(sizeof(u32));
+};
+
+void eip93_hash_handle_result(struct crypto_async_request *async, int err);
+
+extern struct eip93_alg_template eip93_alg_md5;
+extern struct eip93_alg_template eip93_alg_sha1;
+extern struct eip93_alg_template eip93_alg_sha224;
+extern struct eip93_alg_template eip93_alg_sha256;
+extern struct eip93_alg_template eip93_alg_hmac_md5;
+extern struct eip93_alg_template eip93_alg_hmac_sha1;
+extern struct eip93_alg_template eip93_alg_hmac_sha224;
+extern struct eip93_alg_template eip93_alg_hmac_sha256;
+
+#endif /* _EIP93_HASH_H_ */
new file mode 100644
@@ -0,0 +1,502 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+
+#include <linux/atomic.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <crypto/aes.h>
+#include <crypto/ctr.h>
+
+#include "eip93-main.h"
+#include "eip93-regs.h"
+#include "eip93-common.h"
+#include "eip93-cipher.h"
+#include "eip93-aes.h"
+#include "eip93-des.h"
+#include "eip93-aead.h"
+#include "eip93-hash.h"
+
+static struct eip93_alg_template *eip93_algs[] = {
+ &eip93_alg_ecb_des,
+ &eip93_alg_cbc_des,
+ &eip93_alg_ecb_des3_ede,
+ &eip93_alg_cbc_des3_ede,
+ &eip93_alg_ecb_aes,
+ &eip93_alg_cbc_aes,
+ &eip93_alg_ctr_aes,
+ &eip93_alg_rfc3686_aes,
+ &eip93_alg_authenc_hmac_md5_cbc_des,
+ &eip93_alg_authenc_hmac_sha1_cbc_des,
+ &eip93_alg_authenc_hmac_sha224_cbc_des,
+ &eip93_alg_authenc_hmac_sha256_cbc_des,
+ &eip93_alg_authenc_hmac_md5_cbc_des3_ede,
+ &eip93_alg_authenc_hmac_sha1_cbc_des3_ede,
+ &eip93_alg_authenc_hmac_sha224_cbc_des3_ede,
+ &eip93_alg_authenc_hmac_sha256_cbc_des3_ede,
+ &eip93_alg_authenc_hmac_md5_cbc_aes,
+ &eip93_alg_authenc_hmac_sha1_cbc_aes,
+ &eip93_alg_authenc_hmac_sha224_cbc_aes,
+ &eip93_alg_authenc_hmac_sha256_cbc_aes,
+ &eip93_alg_authenc_hmac_md5_rfc3686_aes,
+ &eip93_alg_authenc_hmac_sha1_rfc3686_aes,
+ &eip93_alg_authenc_hmac_sha224_rfc3686_aes,
+ &eip93_alg_authenc_hmac_sha256_rfc3686_aes,
+ &eip93_alg_md5,
+ &eip93_alg_sha1,
+ &eip93_alg_sha224,
+ &eip93_alg_sha256,
+ &eip93_alg_hmac_md5,
+ &eip93_alg_hmac_sha1,
+ &eip93_alg_hmac_sha224,
+ &eip93_alg_hmac_sha256,
+};
+
+inline void eip93_irq_disable(struct eip93_device *mtk, u32 mask)
+{
+ __raw_writel(mask, mtk->base + EIP93_REG_MASK_DISABLE);
+}
+
+inline void eip93_irq_enable(struct eip93_device *mtk, u32 mask)
+{
+ __raw_writel(mask, mtk->base + EIP93_REG_MASK_ENABLE);
+}
+
+inline void eip93_irq_clear(struct eip93_device *mtk, u32 mask)
+{
+ __raw_writel(mask, mtk->base + EIP93_REG_INT_CLR);
+}
+
+static void eip93_unregister_algs(unsigned int i)
+{
+ unsigned int j;
+
+ for (j = 0; j < i; j++) {
+ switch (eip93_algs[j]->type) {
+ case EIP93_ALG_TYPE_SKCIPHER:
+ crypto_unregister_skcipher(&eip93_algs[j]->alg.skcipher);
+ break;
+ case EIP93_ALG_TYPE_AEAD:
+ crypto_unregister_aead(&eip93_algs[j]->alg.aead);
+ break;
+ case EIP93_ALG_TYPE_HASH:
+ crypto_unregister_ahash(&eip93_algs[i]->alg.ahash);
+ break;
+ }
+ }
+}
+
+static int eip93_register_algs(struct eip93_device *mtk, u32 supported_algo_flags)
+{
+ unsigned int i;
+ int ret = 0;
+
+ for (i = 0; i < ARRAY_SIZE(eip93_algs); i++) {
+ u32 alg_flags = eip93_algs[i]->flags;
+
+ eip93_algs[i]->mtk = mtk;
+
+ if ((IS_DES(alg_flags) || IS_3DES(alg_flags)) &&
+ !(supported_algo_flags & EIP93_PE_OPTION_TDES))
+ continue;
+
+ if (IS_AES(alg_flags)) {
+ if (!(supported_algo_flags & EIP93_PE_OPTION_AES))
+ continue;
+
+ if (!IS_HMAC(alg_flags)) {
+ if (supported_algo_flags & EIP93_PE_OPTION_AES_KEY128)
+ eip93_algs[i]->alg.skcipher.max_keysize =
+ AES_KEYSIZE_128;
+
+ if (supported_algo_flags & EIP93_PE_OPTION_AES_KEY192)
+ eip93_algs[i]->alg.skcipher.max_keysize =
+ AES_KEYSIZE_192;
+
+ if (supported_algo_flags & EIP93_PE_OPTION_AES_KEY256)
+ eip93_algs[i]->alg.skcipher.max_keysize =
+ AES_KEYSIZE_256;
+
+ if (IS_RFC3686(alg_flags))
+ eip93_algs[i]->alg.skcipher.max_keysize +=
+ CTR_RFC3686_NONCE_SIZE;
+ }
+ }
+
+ if (IS_HASH_MD5(alg_flags) &&
+ !(supported_algo_flags & EIP93_PE_OPTION_MD5))
+ continue;
+
+ if (IS_HASH_SHA1(alg_flags) &&
+ !(supported_algo_flags & EIP93_PE_OPTION_SHA_1))
+ continue;
+
+ if (IS_HASH_SHA224(alg_flags) &&
+ !(supported_algo_flags & EIP93_PE_OPTION_SHA_224))
+ continue;
+
+ if (IS_HASH_SHA256(alg_flags) &&
+ !(supported_algo_flags & EIP93_PE_OPTION_SHA_256))
+ continue;
+
+ switch (eip93_algs[i]->type) {
+ case EIP93_ALG_TYPE_SKCIPHER:
+ ret = crypto_register_skcipher(&eip93_algs[i]->alg.skcipher);
+ break;
+ case EIP93_ALG_TYPE_AEAD:
+ ret = crypto_register_aead(&eip93_algs[i]->alg.aead);
+ break;
+ case EIP93_ALG_TYPE_HASH:
+ ret = crypto_register_ahash(&eip93_algs[i]->alg.ahash);
+ break;
+ }
+ if (ret)
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ eip93_unregister_algs(i);
+
+ return ret;
+}
+
+static void eip93_handle_result_descriptor(struct eip93_device *mtk)
+{
+ struct crypto_async_request *async;
+ struct eip93_descriptor *rdesc;
+ u16 desc_flags, crypto_idr;
+ bool last_entry;
+ int handled, left, err;
+ u32 pe_ctrl_stat;
+ u32 pe_length;
+
+get_more:
+ handled = 0;
+
+ left = readl(mtk->base + EIP93_REG_PE_RD_COUNT) & EIP93_PE_RD_COUNT;
+
+ if (!left) {
+ eip93_irq_clear(mtk, EIP93_INT_RDR_THRESH);
+ eip93_irq_enable(mtk, EIP93_INT_RDR_THRESH);
+ return;
+ }
+
+ last_entry = false;
+
+ while (left) {
+ rdesc = eip93_get_descriptor(mtk);
+ if (IS_ERR(rdesc)) {
+ dev_err(mtk->dev, "Ndesc: %d nreq: %d\n",
+ handled, left);
+ err = -EIO;
+ break;
+ }
+ /* make sure DMA is finished writing */
+ do {
+ pe_ctrl_stat = READ_ONCE(rdesc->pe_ctrl_stat_word);
+ pe_length = READ_ONCE(rdesc->pe_length_word);
+ } while (FIELD_GET(EIP93_PE_CTRL_PE_READY_DES_TRING_OWN, pe_ctrl_stat) !=
+ EIP93_PE_CTRL_PE_READY ||
+ FIELD_GET(EIP93_PE_LENGTH_HOST_PE_READY, pe_length) !=
+ EIP93_PE_LENGTH_PE_READY);
+
+ err = rdesc->pe_ctrl_stat_word & (EIP93_PE_CTRL_PE_EXT_ERR_CODE |
+ EIP93_PE_CTRL_PE_EXT_ERR |
+ EIP93_PE_CTRL_PE_SEQNUM_ERR |
+ EIP93_PE_CTRL_PE_PAD_ERR |
+ EIP93_PE_CTRL_PE_AUTH_ERR);
+
+ desc_flags = FIELD_GET(EIP93_PE_USER_ID_DESC_FLAGS, rdesc->user_id);
+ crypto_idr = FIELD_GET(EIP93_PE_USER_ID_CRYPTO_IDR, rdesc->user_id);
+
+ writel(1, mtk->base + EIP93_REG_PE_RD_COUNT);
+ eip93_irq_clear(mtk, EIP93_INT_RDR_THRESH);
+
+ handled++;
+ left--;
+
+ if (desc_flags & EIP93_DESC_LAST) {
+ last_entry = true;
+ break;
+ }
+ }
+
+ if (!last_entry)
+ goto get_more;
+
+ /* Get crypto async ref only for last descriptor */
+ scoped_guard(spinlock_bh, &mtk->ring->idr_lock) {
+ async = idr_find(&mtk->ring->crypto_async_idr, crypto_idr);
+ idr_remove(&mtk->ring->crypto_async_idr, crypto_idr);
+ }
+
+ /* Parse error in ctrl stat word */
+ err = eip93_parse_ctrl_stat_err(mtk, err);
+
+ if (desc_flags & EIP93_DESC_SKCIPHER)
+ eip93_skcipher_handle_result(async, err);
+
+ if (desc_flags & EIP93_DESC_AEAD)
+ eip93_aead_handle_result(async, err);
+
+ if (desc_flags & EIP93_DESC_HASH)
+ eip93_hash_handle_result(async, err);
+
+ goto get_more;
+}
+
+static void eip93_done_task(unsigned long data)
+{
+ struct eip93_device *mtk = (struct eip93_device *)data;
+
+ eip93_handle_result_descriptor(mtk);
+}
+
+static irqreturn_t eip93_irq_handler(int irq, void *data)
+{
+ struct eip93_device *mtk = data;
+ u32 irq_status;
+
+ irq_status = readl(mtk->base + EIP93_REG_INT_MASK_STAT);
+ if (FIELD_GET(EIP93_INT_RDR_THRESH, irq_status)) {
+ eip93_irq_disable(mtk, EIP93_INT_RDR_THRESH);
+ tasklet_schedule(&mtk->ring->done_task);
+ return IRQ_HANDLED;
+ }
+
+ /* Ignore errors in AUTO mode, handled by the RDR */
+ eip93_irq_clear(mtk, irq_status);
+ if (irq_status)
+ eip93_irq_disable(mtk, irq_status);
+
+ return IRQ_NONE;
+}
+
+static void eip93_initialize(struct eip93_device *mtk, u32 supported_algo_flags)
+{
+ u32 val;
+
+ /* Reset PE and rings */
+ val = EIP93_PE_CONFIG_RST_PE | EIP93_PE_CONFIG_RST_RING;
+ val |= EIP93_PE_TARGET_AUTO_RING_MODE;
+ /* For Auto more, update the CDR ring owner after processing */
+ val |= EIP93_PE_CONFIG_EN_CDR_UPDATE;
+ writel(val, mtk->base + EIP93_REG_PE_CONFIG);
+
+ /* Wait for PE and ring to reset */
+ usleep_range(10, 20);
+
+ /* Release PE and ring reset */
+ val = readl(mtk->base + EIP93_REG_PE_CONFIG);
+ val &= ~(EIP93_PE_CONFIG_RST_PE | EIP93_PE_CONFIG_RST_RING);
+ writel(val, mtk->base + EIP93_REG_PE_CONFIG);
+
+ /* Config Clocks */
+ val = EIP93_PE_CLOCK_EN_PE_CLK;
+ if (supported_algo_flags & EIP93_PE_OPTION_TDES)
+ val |= EIP93_PE_CLOCK_EN_DES_CLK;
+ if (supported_algo_flags & EIP93_PE_OPTION_AES)
+ val |= EIP93_PE_CLOCK_EN_AES_CLK;
+ if (supported_algo_flags &
+ (EIP93_PE_OPTION_MD5 | EIP93_PE_OPTION_SHA_1 | EIP93_PE_OPTION_SHA_224 |
+ EIP93_PE_OPTION_SHA_256))
+ val |= EIP93_PE_CLOCK_EN_HASH_CLK;
+ writel(val, mtk->base + EIP93_REG_PE_CLOCK_CTRL);
+
+ /* Config DMA thresholds */
+ val = FIELD_PREP(EIP93_PE_OUTBUF_THRESH, 128) |
+ FIELD_PREP(EIP93_PE_INBUF_THRESH, 128);
+ writel(val, mtk->base + EIP93_REG_PE_BUF_THRESH);
+
+ /* Clear/ack all interrupts before disable all */
+ eip93_irq_clear(mtk, EIP93_INT_ALL);
+ eip93_irq_disable(mtk, EIP93_INT_ALL);
+
+ /* Setup CRD threshold to trigger interrupt */
+ val = FIELD_PREP(EIPR93_PE_CDR_THRESH, EIP93_RING_NUM - EIP93_RING_BUSY);
+ /*
+ * Configure RDR interrupt to be triggered if RD counter is not 0
+ * for more than 2^(N+10) system clocks.
+ */
+ val |= FIELD_PREP(EIPR93_PE_RD_TIMEOUT, 5) | EIPR93_PE_TIMEROUT_EN;
+ writel(val, mtk->base + EIP93_REG_PE_RING_THRESH);
+}
+
+static void eip93_desc_free(struct eip93_device *mtk)
+{
+ writel(0, mtk->base + EIP93_REG_PE_RING_CONFIG);
+ writel(0, mtk->base + EIP93_REG_PE_CDR_BASE);
+ writel(0, mtk->base + EIP93_REG_PE_RDR_BASE);
+}
+
+static int eip93_set_ring(struct eip93_device *mtk, struct eip93_desc_ring *ring)
+{
+ ring->offset = sizeof(struct eip93_descriptor);
+ ring->base = dmam_alloc_coherent(mtk->dev,
+ sizeof(struct eip93_descriptor) * EIP93_RING_NUM,
+ &ring->base_dma, GFP_KERNEL);
+ if (!ring->base)
+ return -ENOMEM;
+
+ ring->write = ring->base;
+ ring->base_end = ring->base + sizeof(struct eip93_descriptor) * (EIP93_RING_NUM - 1);
+ ring->read = ring->base;
+
+ return 0;
+}
+
+static int eip93_desc_init(struct eip93_device *mtk)
+{
+ struct eip93_desc_ring *cdr = &mtk->ring->cdr;
+ struct eip93_desc_ring *rdr = &mtk->ring->rdr;
+ int ret;
+ u32 val;
+
+ ret = eip93_set_ring(mtk, cdr);
+ if (ret)
+ return ret;
+
+ ret = eip93_set_ring(mtk, rdr);
+ if (ret)
+ return ret;
+
+ writel((u32 __force)cdr->base_dma, mtk->base + EIP93_REG_PE_CDR_BASE);
+ writel((u32 __force)rdr->base_dma, mtk->base + EIP93_REG_PE_RDR_BASE);
+
+ val = FIELD_PREP(EIP93_PE_RING_SIZE, EIP93_RING_NUM - 1);
+ writel(val, mtk->base + EIP93_REG_PE_RING_CONFIG);
+
+ atomic_set(&mtk->ring->free, EIP93_RING_NUM - 1);
+
+ return 0;
+}
+
+static void eip93_cleanup(struct eip93_device *mtk)
+{
+ tasklet_kill(&mtk->ring->done_task);
+
+ /* Clear/ack all interrupts before disable all */
+ eip93_irq_clear(mtk, EIP93_INT_ALL);
+ eip93_irq_disable(mtk, EIP93_INT_ALL);
+
+ writel(0, mtk->base + EIP93_REG_PE_CLOCK_CTRL);
+
+ eip93_desc_free(mtk);
+
+ idr_destroy(&mtk->ring->crypto_async_idr);
+}
+
+static int eip93_crypto_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct eip93_device *mtk;
+ u32 ver, algo_flags;
+ int ret;
+
+ mtk = devm_kzalloc(dev, sizeof(*mtk), GFP_KERNEL);
+ if (!mtk)
+ return -ENOMEM;
+
+ mtk->dev = dev;
+ platform_set_drvdata(pdev, mtk);
+
+ mtk->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(mtk->base))
+ return PTR_ERR(mtk->base);
+
+ mtk->irq = platform_get_irq(pdev, 0);
+ if (mtk->irq < 0)
+ return mtk->irq;
+
+ ret = devm_request_threaded_irq(mtk->dev, mtk->irq, eip93_irq_handler,
+ NULL, IRQF_ONESHOT,
+ dev_name(mtk->dev), mtk);
+
+ mtk->ring = devm_kcalloc(mtk->dev, 1, sizeof(*mtk->ring), GFP_KERNEL);
+ if (!mtk->ring)
+ return -ENOMEM;
+
+ ret = eip93_desc_init(mtk);
+
+ if (ret)
+ return ret;
+
+ tasklet_init(&mtk->ring->done_task, eip93_done_task, (unsigned long)mtk);
+
+ spin_lock_init(&mtk->ring->read_lock);
+ spin_lock_init(&mtk->ring->write_lock);
+
+ spin_lock_init(&mtk->ring->idr_lock);
+ idr_init(&mtk->ring->crypto_async_idr);
+
+ algo_flags = readl(mtk->base + EIP93_REG_PE_OPTION_1);
+
+ eip93_initialize(mtk, algo_flags);
+
+ /* Init finished, enable RDR interrupt */
+ eip93_irq_enable(mtk, EIP93_INT_RDR_THRESH);
+
+ ret = eip93_register_algs(mtk, algo_flags);
+ if (ret) {
+ eip93_cleanup(mtk);
+ return ret;
+ }
+
+ ver = readl(mtk->base + EIP93_REG_PE_REVISION);
+ /* EIP_EIP_NO:MAJOR_HW_REV:MINOR_HW_REV:HW_PATCH,PE(ALGO_FLAGS) */
+ dev_info(mtk->dev, "EIP%lu:%lx:%lx:%lx,PE(0x%x:0x%x)\n",
+ FIELD_GET(EIP93_PE_REVISION_EIP_NO, ver),
+ FIELD_GET(EIP93_PE_REVISION_MAJ_HW_REV, ver),
+ FIELD_GET(EIP93_PE_REVISION_MIN_HW_REV, ver),
+ FIELD_GET(EIP93_PE_REVISION_HW_PATCH, ver),
+ algo_flags,
+ readl(mtk->base + EIP93_REG_PE_OPTION_0));
+
+ return 0;
+}
+
+static void eip93_crypto_remove(struct platform_device *pdev)
+{
+ struct eip93_device *mtk = platform_get_drvdata(pdev);
+
+ eip93_unregister_algs(ARRAY_SIZE(eip93_algs));
+ eip93_cleanup(mtk);
+}
+
+static const struct of_device_id eip93_crypto_of_match[] = {
+ { .compatible = "inside-secure,safexcel-eip93i", },
+ { .compatible = "inside-secure,safexcel-eip93ie", },
+ { .compatible = "inside-secure,safexcel-eip93is", },
+ { .compatible = "inside-secure,safexcel-eip93ies", },
+ /* IW not supported currently, missing AES-XCB-MAC/AES-CCM */
+ /* { .compatible = "inside-secure,safexcel-eip93iw", }, */
+ {}
+};
+MODULE_DEVICE_TABLE(of, eip93_crypto_of_match);
+
+static struct platform_driver eip93_crypto_driver = {
+ .probe = eip93_crypto_probe,
+ .remove = eip93_crypto_remove,
+ .driver = {
+ .name = "mtk-eip93",
+ .of_match_table = eip93_crypto_of_match,
+ },
+};
+module_platform_driver(eip93_crypto_driver);
+
+MODULE_AUTHOR("Richard van Schagen <vschagen@cs.com>");
+MODULE_AUTHOR("Christian Marangi <ansuelsmth@gmail.com>");
+MODULE_DESCRIPTION("Mediatek EIP-93 crypto engine driver");
+MODULE_LICENSE("GPL");
new file mode 100644
@@ -0,0 +1,152 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+#ifndef _EIP93_MAIN_H_
+#define _EIP93_MAIN_H_
+
+#include <crypto/internal/aead.h>
+#include <crypto/internal/hash.h>
+#include <crypto/internal/skcipher.h>
+#include <linux/bitfield.h>
+#include <linux/interrupt.h>
+
+#define EIP93_RING_BUSY_DELAY 500
+
+#define EIP93_RING_NUM 512
+#define EIP93_RING_BUSY 32
+#define EIP93_CRA_PRIORITY 1500
+
+#define EIP93_RING_SA_STATE_ADDR(base, idx) ((base) + (idx))
+#define EIP93_RING_SA_STATE_DMA(dma_base, idx) ((u32 __force)(dma_base) + \
+ ((idx) * sizeof(struct sa_state)))
+
+/* cipher algorithms */
+#define EIP93_ALG_DES BIT(0)
+#define EIP93_ALG_3DES BIT(1)
+#define EIP93_ALG_AES BIT(2)
+#define EIP93_ALG_MASK GENMASK(2, 0)
+/* hash and hmac algorithms */
+#define EIP93_HASH_MD5 BIT(3)
+#define EIP93_HASH_SHA1 BIT(4)
+#define EIP93_HASH_SHA224 BIT(5)
+#define EIP93_HASH_SHA256 BIT(6)
+#define EIP93_HASH_HMAC BIT(7)
+#define EIP93_HASH_MASK GENMASK(6, 3)
+/* cipher modes */
+#define EIP93_MODE_CBC BIT(8)
+#define EIP93_MODE_ECB BIT(9)
+#define EIP93_MODE_CTR BIT(10)
+#define EIP93_MODE_RFC3686 BIT(11)
+#define EIP93_MODE_MASK GENMASK(10, 8)
+
+/* cipher encryption/decryption operations */
+#define EIP93_ENCRYPT BIT(12)
+#define EIP93_DECRYPT BIT(13)
+
+#define EIP93_BUSY BIT(14)
+
+/* descriptor flags */
+#define EIP93_DESC_DMA_IV BIT(0)
+#define EIP93_DESC_IPSEC BIT(1)
+#define EIP93_DESC_FINISH BIT(2)
+#define EIP93_DESC_LAST BIT(3)
+#define EIP93_DESC_FAKE_HMAC BIT(4)
+#define EIP93_DESC_PRNG BIT(5)
+#define EIP93_DESC_HASH BIT(6)
+#define EIP93_DESC_AEAD BIT(7)
+#define EIP93_DESC_SKCIPHER BIT(8)
+#define EIP93_DESC_ASYNC BIT(9)
+
+#define IS_DMA_IV(desc_flags) ((desc_flags) & EIP93_DESC_DMA_IV)
+
+#define IS_DES(flags) ((flags) & EIP93_ALG_DES)
+#define IS_3DES(flags) ((flags) & EIP93_ALG_3DES)
+#define IS_AES(flags) ((flags) & EIP93_ALG_AES)
+
+#define IS_HASH_MD5(flags) ((flags) & EIP93_HASH_MD5)
+#define IS_HASH_SHA1(flags) ((flags) & EIP93_HASH_SHA1)
+#define IS_HASH_SHA224(flags) ((flags) & EIP93_HASH_SHA224)
+#define IS_HASH_SHA256(flags) ((flags) & EIP93_HASH_SHA256)
+#define IS_HMAC(flags) ((flags) & EIP93_HASH_HMAC)
+
+#define IS_CBC(mode) ((mode) & EIP93_MODE_CBC)
+#define IS_ECB(mode) ((mode) & EIP93_MODE_ECB)
+#define IS_CTR(mode) ((mode) & EIP93_MODE_CTR)
+#define IS_RFC3686(mode) ((mode) & EIP93_MODE_RFC3686)
+
+#define IS_BUSY(flags) ((flags) & EIP93_BUSY)
+
+#define IS_ENCRYPT(dir) ((dir) & EIP93_ENCRYPT)
+#define IS_DECRYPT(dir) ((dir) & EIP93_DECRYPT)
+
+#define IS_CIPHER(flags) ((flags) & (EIP93_ALG_DES | \
+ EIP93_ALG_3DES | \
+ EIP93_ALG_AES))
+
+#define IS_HASH(flags) ((flags) & (EIP93_HASH_MD5 | \
+ EIP93_HASH_SHA1 | \
+ EIP93_HASH_SHA224 | \
+ EIP93_HASH_SHA256))
+
+/**
+ * struct eip93_device - crypto engine device structure
+ */
+struct eip93_device {
+ void __iomem *base;
+ struct device *dev;
+ struct clk *clk;
+ int irq;
+ struct eip93_ring *ring;
+};
+
+struct eip93_desc_ring {
+ void *base;
+ void *base_end;
+ dma_addr_t base_dma;
+ /* write and read pointers */
+ void *read;
+ void *write;
+ /* descriptor element offset */
+ u32 offset;
+};
+
+struct eip93_state_pool {
+ void *base;
+ dma_addr_t base_dma;
+};
+
+struct eip93_ring {
+ struct tasklet_struct done_task;
+ /* command/result rings */
+ struct eip93_desc_ring cdr;
+ struct eip93_desc_ring rdr;
+ spinlock_t write_lock;
+ spinlock_t read_lock;
+ atomic_t free;
+ /* aync idr */
+ spinlock_t idr_lock;
+ struct idr crypto_async_idr;
+};
+
+enum eip93_alg_type {
+ EIP93_ALG_TYPE_AEAD,
+ EIP93_ALG_TYPE_SKCIPHER,
+ EIP93_ALG_TYPE_HASH,
+};
+
+struct eip93_alg_template {
+ struct eip93_device *mtk;
+ enum eip93_alg_type type;
+ u32 flags;
+ union {
+ struct aead_alg aead;
+ struct skcipher_alg skcipher;
+ struct ahash_alg ahash;
+ } alg;
+};
+
+#endif /* _EIP93_MAIN_H_ */
new file mode 100644
@@ -0,0 +1,335 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 - 2021
+ *
+ * Richard van Schagen <vschagen@icloud.com>
+ * Christian Marangi <ansuelsmth@gmail.com
+ */
+#ifndef REG_EIP93_H
+#define REG_EIP93_H
+
+#define EIP93_REG_PE_CTRL_STAT 0x0
+#define EIP93_PE_CTRL_PE_PAD_CTRL_STAT GENMASK(31, 24)
+#define EIP93_PE_CTRL_PE_EXT_ERR_CODE GENMASK(23, 20)
+#define EIP93_PE_CTRL_PE_EXT_ERR_PROCESSING 0x8
+#define EIP93_PE_CTRL_PE_EXT_ERR_BLOCK_SIZE_ERR 0x7
+#define EIP93_PE_CTRL_PE_EXT_ERR_INVALID_PK_LENGTH 0x6
+#define EIP93_PE_CTRL_PE_EXT_ERR_ZERO_LENGTH 0x5
+#define EIP93_PE_CTRL_PE_EXT_ERR_SPI 0x4
+#define EIP93_PE_CTRL_PE_EXT_ERR_INVALID_CRYPTO_ALGO 0x3
+#define EIP93_PE_CTRL_PE_EXT_ERR_INVALID_CRYPTO_OP 0x2
+#define EIP93_PE_CTRL_PE_EXT_ERR_DESC_OWNER 0x1
+#define EIP93_PE_CTRL_PE_EXT_ERR_BUS 0x0
+#define EIP93_PE_CTRL_PE_EXT_ERR BIT(19)
+#define EIP93_PE_CTRL_PE_SEQNUM_ERR BIT(18)
+#define EIP93_PE_CTRL_PE_PAD_ERR BIT(17)
+#define EIP93_PE_CTRL_PE_AUTH_ERR BIT(16)
+#define EIP93_PE_CTRL_PE_PAD_VALUE GENMASK(15, 8)
+#define EIP93_PE_CTRL_PE_PRNG_MODE GENMASK(7, 6)
+#define EIP93_PE_CTRL_PE_HASH_FINAL BIT(4)
+#define EIP93_PE_CTRL_PE_INIT_ARC4 BIT(3)
+#define EIP93_PE_CTRL_PE_READY_DES_TRING_OWN GENMASK(1, 0)
+#define EIP93_PE_CTRL_PE_READY 0x2
+#define EIP93_PE_CTRL_HOST_READY 0x1
+#define EIP93_REG_PE_SOURCE_ADDR 0x4
+#define EIP93_REG_PE_DEST_ADDR 0x8
+#define EIP93_REG_PE_SA_ADDR 0xc
+#define EIP93_REG_PE_ADDR 0x10 /* STATE_ADDR */
+/*
+ * Special implementation for user ID
+ * user_id in eip93_descriptor is used to identify the
+ * descriptor and is opaque and can be used by the driver
+ * in custom way.
+ *
+ * The usage of this should be to put an address to the crypto
+ * request struct from the kernel but this can't work in 64bit
+ * world.
+ *
+ * Also it's required to put some flags to identify the last
+ * descriptor.
+ *
+ * To handle this, split the u32 in 2 part:
+ * - 31:16 descriptor flags
+ * - 15:0 IDR to connect the crypto request address
+ */
+#define EIP93_REG_PE_USER_ID 0x18
+#define EIP93_PE_USER_ID_DESC_FLAGS GENMASK(31, 16)
+#define EIP93_PE_USER_ID_CRYPTO_IDR GENMASK(15, 0)
+#define EIP93_REG_PE_LENGTH 0x1c
+#define EIP93_PE_LENGTH_BYPASS GENMASK(31, 24)
+#define EIP93_PE_LENGTH_HOST_PE_READY GENMASK(23, 22)
+#define EIP93_PE_LENGTH_PE_READY 0x2
+#define EIP93_PE_LENGTH_HOST_READY 0x1
+#define EIP93_PE_LENGTH_LENGTH GENMASK(19, 0)
+
+/* PACKET ENGINE RING configuration registers */
+#define EIP93_REG_PE_CDR_BASE 0x80
+#define EIP93_REG_PE_RDR_BASE 0x84
+#define EIP93_REG_PE_RING_CONFIG 0x88
+#define EIP93_PE_EN_EXT_TRIG BIT(31)
+/* Absent in later revision of eip93 */
+/* #define EIP93_PE_RING_OFFSET GENMASK(23, 15) */
+#define EIP93_PE_RING_SIZE GENMASK(9, 0)
+#define EIP93_REG_PE_RING_THRESH 0x8c
+#define EIPR93_PE_TIMEROUT_EN BIT(31)
+#define EIPR93_PE_RD_TIMEOUT GENMASK(29, 26)
+#define EIPR93_PE_RDR_THRESH GENMASK(25, 16)
+#define EIPR93_PE_CDR_THRESH GENMASK(9, 0)
+#define EIP93_REG_PE_CD_COUNT 0x90
+#define EIP93_PE_CD_COUNT GENMASK(10, 0)
+/*
+ * In the same register, writing a value in GENMASK(7, 0) will
+ * increment the descriptor count and start DMA action.
+ */
+#define EIP93_PE_CD_COUNT_INCR GENMASK(7, 0)
+#define EIP93_REG_PE_RD_COUNT 0x94
+#define EIP93_PE_RD_COUNT GENMASK(10, 0)
+/*
+ * In the same register, writing a value in GENMASK(7, 0) will
+ * increment the descriptor count and start DMA action.
+ */
+#define EIP93_PE_RD_COUNT_INCR GENMASK(7, 0)
+#define EIP93_REG_PE_RING_RW_PNTR 0x98 /* RING_PNTR */
+
+/* PACKET ENGINE configuration registers */
+#define EIP93_REG_PE_CONFIG 0x100
+#define EIP93_PE_CONFIG_SWAP_TARGET BIT(20)
+#define EIP93_PE_CONFIG_SWAP_DATA BIT(18)
+#define EIP93_PE_CONFIG_SWAP_SA BIT(17)
+#define EIP93_PE_CONFIG_SWAP_CDRD BIT(16)
+#define EIP93_PE_CONFIG_EN_CDR_UPDATE BIT(10)
+#define EIP93_PE_CONFIG_PE_MODE GENMASK(9, 8)
+#define EIP93_PE_TARGET_AUTO_RING_MODE FIELD_PREP(EIP93_PE_CONFIG_PE_MODE, 0x3)
+#define EIP93_PE_TARGET_COMMAND_NO_RDR_MODE FIELD_PREP(EIP93_PE_CONFIG_PE_MODE, 0x2)
+#define EIP93_PE_TARGET_COMMAND_WITH_RDR_MODE FIELD_PREP(EIP93_PE_CONFIG_PE_MODE, 0x1)
+#define EIP93_PE_DIRECT_HOST_MODE FIELD_PREP(EIP93_PE_CONFIG_PE_MODE, 0x0)
+#define EIP93_PE_CONFIG_RST_RING BIT(2)
+#define EIP93_PE_CONFIG_RST_PE BIT(0)
+#define EIP93_REG_PE_STATUS 0x104
+#define EIP93_REG_PE_BUF_THRESH 0x10c
+#define EIP93_PE_OUTBUF_THRESH GENMASK(23, 16)
+#define EIP93_PE_INBUF_THRESH GENMASK(7, 0)
+#define EIP93_REG_PE_INBUF_COUNT 0x100
+#define EIP93_REG_PE_OUTBUF_COUNT 0x114
+#define EIP93_REG_PE_BUF_RW_PNTR 0x118 /* BUF_PNTR */
+
+/* PACKET ENGINE endian config */
+#define EIP93_REG_PE_ENDIAN_CONFIG 0x1cc
+#define EIP93_AIROHA_REG_PE_ENDIAN_CONFIG 0x1d0
+#define EIP93_PE_ENDIAN_TARGET_BYTE_SWAP GENMASK(23, 16)
+#define EIP93_PE_ENDIAN_MASTER_BYTE_SWAP GENMASK(7, 0)
+/*
+ * Byte goes 2 and 2 and are referenced by ID
+ * Split GENMASK(7, 0) in 4 part, one for each byte.
+ * Example LITTLE ENDIAN: Example BIG ENDIAN
+ * GENMASK(7, 6) 0x3 GENMASK(7, 6) 0x0
+ * GENMASK(5, 4) 0x2 GENMASK(7, 6) 0x1
+ * GENMASK(3, 2) 0x1 GENMASK(3, 2) 0x2
+ * GENMASK(1, 0) 0x0 GENMASK(1, 0) 0x3
+ */
+#define EIP93_PE_ENDIAN_BYTE0 0x0
+#define EIP93_PE_ENDIAN_BYTE1 0x1
+#define EIP93_PE_ENDIAN_BYTE2 0x2
+#define EIP93_PE_ENDIAN_BYTE3 0x3
+
+/* EIP93 CLOCK control registers */
+#define EIP93_REG_PE_CLOCK_CTRL 0x1e8
+#define EIP93_PE_CLOCK_EN_HASH_CLK BIT(4)
+#define EIP93_PE_CLOCK_EN_ARC4_CLK BIT(3)
+#define EIP93_PE_CLOCK_EN_AES_CLK BIT(2)
+#define EIP93_PE_CLOCK_EN_DES_CLK BIT(1)
+#define EIP93_PE_CLOCK_EN_PE_CLK BIT(0)
+
+/* EIP93 Device Option and Revision Register */
+#define EIP93_REG_PE_OPTION_1 0x1f4
+#define EIP93_PE_OPTION_MAC_KEY256 BIT(31)
+#define EIP93_PE_OPTION_MAC_KEY192 BIT(30)
+#define EIP93_PE_OPTION_MAC_KEY128 BIT(29)
+#define EIP93_PE_OPTION_AES_CBC_MAC BIT(28)
+#define EIP93_PE_OPTION_AES_XCBX BIT(23)
+#define EIP93_PE_OPTION_SHA_256 BIT(19)
+#define EIP93_PE_OPTION_SHA_224 BIT(18)
+#define EIP93_PE_OPTION_SHA_1 BIT(17)
+#define EIP93_PE_OPTION_MD5 BIT(16)
+#define EIP93_PE_OPTION_AES_KEY256 BIT(15)
+#define EIP93_PE_OPTION_AES_KEY192 BIT(14)
+#define EIP93_PE_OPTION_AES_KEY128 BIT(13)
+#define EIP93_PE_OPTION_AES BIT(2)
+#define EIP93_PE_OPTION_ARC4 BIT(1)
+#define EIP93_PE_OPTION_TDES BIT(0) /* DES and TDES */
+#define EIP93_REG_PE_OPTION_0 0x1f8
+#define EIP93_REG_PE_REVISION 0x1fc
+#define EIP93_PE_REVISION_MAJ_HW_REV GENMASK(27, 24)
+#define EIP93_PE_REVISION_MIN_HW_REV GENMASK(23, 20)
+#define EIP93_PE_REVISION_HW_PATCH GENMASK(19, 16)
+#define EIP93_PE_REVISION_EIP_NO GENMASK(7, 0)
+
+/* EIP93 Interrupt Control Register */
+#define EIP93_REG_INT_UNMASK_STAT 0x200
+#define EIP93_REG_INT_MASK_STAT 0x204
+#define EIP93_REG_INT_CLR 0x204
+#define EIP93_REG_INT_MASK 0x208 /* INT_EN */
+/* Each int reg have the same bitmap */
+#define EIP93_INT_INTERFACE_ERR BIT(18)
+#define EIP93_INT_RPOC_ERR BIT(17)
+#define EIP93_INT_PE_RING_ERR BIT(16)
+#define EIP93_INT_HALT BIT(15)
+#define EIP93_INT_OUTBUF_THRESH BIT(11)
+#define EIP93_INT_INBUF_THRESH BIT(10)
+#define EIP93_INT_OPERATION_DONE BIT(9)
+#define EIP93_INT_RDR_THRESH BIT(1)
+#define EIP93_INT_CDR_THRESH BIT(0)
+#define EIP93_INT_ALL (EIP93_INT_INTERFACE_ERR | \
+ EIP93_INT_RPOC_ERR | \
+ EIP93_INT_PE_RING_ERR | \
+ EIP93_INT_HALT | \
+ EIP93_INT_OUTBUF_THRESH | \
+ EIP93_INT_INBUF_THRESH | \
+ EIP93_INT_OPERATION_DONE | \
+ EIP93_INT_RDR_THRESH | \
+ EIP93_INT_CDR_THRESH)
+
+#define EIP93_REG_INT_CFG 0x20c
+#define EIP93_INT_TYPE_PULSE BIT(0)
+#define EIP93_REG_MASK_ENABLE 0x210
+#define EIP93_REG_MASK_DISABLE 0x214
+
+/* EIP93 SA Record register */
+#define EIP93_REG_SA_CMD_0 0x400
+#define EIP93_SA_CMD_SAVE_HASH BIT(29)
+#define EIP93_SA_CMD_SAVE_IV BIT(28)
+#define EIP93_SA_CMD_HASH_SOURCE GENMASK(27, 26)
+#define EIP93_SA_CMD_HASH_NO_LOAD FIELD_PREP(EIP93_SA_CMD_HASH_SOURCE, 0x3)
+#define EIP93_SA_CMD_HASH_FROM_STATE FIELD_PREP(EIP93_SA_CMD_HASH_SOURCE, 0x2)
+#define EIP93_SA_CMD_HASH_FROM_SA FIELD_PREP(EIP93_SA_CMD_HASH_SOURCE, 0x0)
+#define EIP93_SA_CMD_IV_SOURCE GENMASK(25, 24)
+#define EIP93_SA_CMD_IV_FROM_PRNG FIELD_PREP(EIP93_SA_CMD_IV_SOURCE, 0x3)
+#define EIP93_SA_CMD_IV_FROM_STATE FIELD_PREP(EIP93_SA_CMD_IV_SOURCE, 0x2)
+#define EIP93_SA_CMD_IV_FROM_INPUT FIELD_PREP(EIP93_SA_CMD_IV_SOURCE, 0x1)
+#define EIP93_SA_CMD_IV_NO_LOAD FIELD_PREP(EIP93_SA_CMD_IV_SOURCE, 0x0)
+#define EIP93_SA_CMD_DIGEST_LENGTH GENMASK(23, 20)
+#define EIP93_SA_CMD_DIGEST_10WORD FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH, 0xa) /* SRTP and TLS */
+#define EIP93_SA_CMD_DIGEST_8WORD FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH, 0x8) /* SHA-256 */
+#define EIP93_SA_CMD_DIGEST_7WORD FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH, 0x7) /* SHA-224 */
+#define EIP93_SA_CMD_DIGEST_6WORD FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH, 0x6)
+#define EIP93_SA_CMD_DIGEST_5WORD FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH, 0x5) /* SHA1 */
+#define EIP93_SA_CMD_DIGEST_4WORD FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH, 0x4) /* MD5 and AES-based */
+#define EIP93_SA_CMD_DIGEST_3WORD_IPSEC FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH, 0x3) /* IPSEC */
+#define EIP93_SA_CMD_DIGEST_2WORD FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH, 0x2)
+#define EIP93_SA_CMD_DIGEST_1WORD FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH, 0x1)
+#define EIP93_SA_CMD_DIGEST_3WORD FIELD_PREP(EIP93_SA_CMD_DIGEST_LENGTH, 0x0) /* 96bit output */
+#define EIP93_SA_CMD_HDR_PROC BIT(19)
+#define EIP93_SA_CMD_EXT_PAD BIT(18)
+#define EIP93_SA_CMD_SCPAD BIT(17)
+#define EIP93_SA_CMD_HASH GENMASK(15, 12)
+#define EIP93_SA_CMD_HASH_NULL FIELD_PREP(EIP93_SA_CMD_HASH, 0xf)
+#define EIP93_SA_CMD_HASH_SHA256 FIELD_PREP(EIP93_SA_CMD_HASH, 0x3)
+#define EIP93_SA_CMD_HASH_SHA224 FIELD_PREP(EIP93_SA_CMD_HASH, 0x2)
+#define EIP93_SA_CMD_HASH_SHA1 FIELD_PREP(EIP93_SA_CMD_HASH, 0x1)
+#define EIP93_SA_CMD_HASH_MD5 FIELD_PREP(EIP93_SA_CMD_HASH, 0x0)
+#define EIP93_SA_CMD_CIPHER GENMASK(11, 8)
+#define EIP93_SA_CMD_CIPHER_NULL FIELD_PREP(EIP93_SA_CMD_CIPHER, 0xf)
+#define EIP93_SA_CMD_CIPHER_AES FIELD_PREP(EIP93_SA_CMD_CIPHER, 0x3)
+#define EIP93_SA_CMD_CIPHER_ARC4 FIELD_PREP(EIP93_SA_CMD_CIPHER, 0x2)
+#define EIP93_SA_CMD_CIPHER_3DES FIELD_PREP(EIP93_SA_CMD_CIPHER, 0x1)
+#define EIP93_SA_CMD_CIPHER_DES FIELD_PREP(EIP93_SA_CMD_CIPHER, 0x0)
+#define EIP93_SA_CMD_PAD_TYPE GENMASK(7, 6)
+#define EIP93_SA_CMD_PAD_CONST_SSL FIELD_PREP(EIP93_SA_CMD_PAD_TYPE, 0x6)
+#define EIP93_SA_CMD_PAD_TLS_DTLS FIELD_PREP(EIP93_SA_CMD_PAD_TYPE, 0x5)
+#define EIP93_SA_CMD_PAD_ZERO FIELD_PREP(EIP93_SA_CMD_PAD_TYPE, 0x3)
+#define EIP93_SA_CMD_PAD_CONST FIELD_PREP(EIP93_SA_CMD_PAD_TYPE, 0x2)
+#define EIP93_SA_CMD_PAD_PKCS7 FIELD_PREP(EIP93_SA_CMD_PAD_TYPE, 0x1)
+#define EIP93_SA_CMD_PAD_IPSEC FIELD_PREP(EIP93_SA_CMD_PAD_TYPE, 0x0)
+#define EIP93_SA_CMD_OPGROUP GENMASK(5, 4)
+#define EIP93_SA_CMD_OP_EXT FIELD_PREP(EIP93_SA_CMD_OPGROUP, 0x2)
+#define EIP93_SA_CMD_OP_PROTOCOL FIELD_PREP(EIP93_SA_CMD_OPGROUP, 0x1)
+#define EIP93_SA_CMD_OP_BASIC FIELD_PREP(EIP93_SA_CMD_OPGROUP, 0x0)
+#define EIP93_SA_CMD_DIRECTION_IN BIT(3) /* 0: outbount 1: inbound */
+#define EIP93_SA_CMD_OPCODE GENMASK(2, 0)
+#define EIP93_SA_CMD_OPCODE_BASIC_OUT_PRNG 0x7
+#define EIP93_SA_CMD_OPCODE_BASIC_OUT_HASH 0x3
+#define EIP93_SA_CMD_OPCODE_BASIC_OUT_ENC_HASH 0x1
+#define EIP93_SA_CMD_OPCODE_BASIC_OUT_ENC 0x0
+#define EIP93_SA_CMD_OPCODE_BASIC_IN_HASH 0x3
+#define EIP93_SA_CMD_OPCODE_BASIC_IN_HASH_DEC 0x1
+#define EIP93_SA_CMD_OPCODE_BASIC_IN_DEC 0x0
+#define EIP93_SA_CMD_OPCODE_PROTOCOL_OUT_ESP 0x0
+#define EIP93_SA_CMD_OPCODE_PROTOCOL_OUT_SSL 0x4
+#define EIP93_SA_CMD_OPCODE_PROTOCOL_OUT_TLS 0x5
+#define EIP93_SA_CMD_OPCODE_PROTOCOL_OUT_SRTP 0x7
+#define EIP93_SA_CMD_OPCODE_PROTOCOL_IN_ESP 0x0
+#define EIP93_SA_CMD_OPCODE_PROTOCOL_IN_SSL 0x2
+#define EIP93_SA_CMD_OPCODE_PROTOCOL_IN_TLS 0x3
+#define EIP93_SA_CMD_OPCODE_PROTOCOL_IN_SRTP 0x7
+#define EIP93_SA_CMD_OPCODE_EXT_OUT_DTSL 0x1
+#define EIP93_SA_CMD_OPCODE_EXT_OUT_SSL 0x4
+#define EIP93_SA_CMD_OPCODE_EXT_OUT_TLSV10 0x5
+#define EIP93_SA_CMD_OPCODE_EXT_OUT_TLSV11 0x6
+#define EIP93_SA_CMD_OPCODE_EXT_IN_DTSL 0x1
+#define EIP93_SA_CMD_OPCODE_EXT_IN_SSL 0x4
+#define EIP93_SA_CMD_OPCODE_EXT_IN_TLSV10 0x5
+#define EIP93_SA_CMD_OPCODE_EXT_IN_TLSV11 0x6
+#define EIP93_REG_SA_CMD_1 0x404
+#define EIP93_SA_CMD_EN_SEQNUM_CHK BIT(29)
+/* This mask can be either used for ARC4 or AES */
+#define EIP93_SA_CMD_ARC4_KEY_LENGHT GENMASK(28, 24)
+#define EIP93_SA_CMD_AES_DEC_KEY BIT(28) /* 0: encrypt key 1: decrypt key */
+#define EIP93_SA_CMD_AES_KEY_LENGTH GENMASK(26, 24)
+#define EIP93_SA_CMD_AES_KEY_256BIT FIELD_PREP(EIP93_SA_CMD_AES_KEY_LENGTH, 0x4)
+#define EIP93_SA_CMD_AES_KEY_192BIT FIELD_PREP(EIP93_SA_CMD_AES_KEY_LENGTH, 0x3)
+#define EIP93_SA_CMD_AES_KEY_128BIT FIELD_PREP(EIP93_SA_CMD_AES_KEY_LENGTH, 0x2)
+#define EIP93_SA_CMD_HASH_CRYPT_OFFSET GENMASK(23, 16)
+#define EIP93_SA_CMD_BYTE_OFFSET BIT(13) /* 0: CRYPT_OFFSET in 32bit word 1: CRYPT_OFFSET in 8bit bytes */
+#define EIP93_SA_CMD_HMAC BIT(12)
+#define EIP93_SA_CMD_SSL_MAC BIT(12)
+/* This mask can be either used for ARC4 or AES */
+#define EIP93_SA_CMD_CHIPER_MODE GENMASK(9, 8)
+/* AES or DES operations */
+#define EIP93_SA_CMD_CHIPER_MODE_ICM FIELD_PREP(EIP93_SA_CMD_CHIPER_MODE, 0x3)
+#define EIP93_SA_CMD_CHIPER_MODE_CTR FIELD_PREP(EIP93_SA_CMD_CHIPER_MODE, 0x2)
+#define EIP93_SA_CMD_CHIPER_MODE_CBC FIELD_PREP(EIP93_SA_CMD_CHIPER_MODE, 0x1)
+#define EIP93_SA_CMD_CHIPER_MODE_ECB FIELD_PREP(EIP93_SA_CMD_CHIPER_MODE, 0x0)
+/* ARC4 operations */
+#define EIP93_SA_CMD_CHIPER_MODE_STATEFULL FIELD_PREP(EIP93_SA_CMD_CHIPER_MODE, 0x1)
+#define EIP93_SA_CMD_CHIPER_MODE_STATELESS FIELD_PREP(EIP93_SA_CMD_CHIPER_MODE, 0x0)
+#define EIP93_SA_CMD_COPY_PAD BIT(3)
+#define EIP93_SA_CMD_COPY_PAYLOAD BIT(2)
+#define EIP93_SA_CMD_COPY_HEADER BIT(1)
+#define EIP93_SA_CMD_COPY_DIGEST BIT(0) /* With this enabled, COPY_PAD is required */
+
+/* State save register */
+#define EIP93_REG_STATE_IV_0 0x500
+#define EIP93_REG_STATE_IV_1 0x504
+
+#define EIP93_REG_PE_ARC4STATE 0x700
+
+struct sa_record {
+ u32 sa_cmd0_word;
+ u32 sa_cmd1_word;
+ u32 sa_key[8];
+ u8 sa_i_digest[32];
+ u8 sa_o_digest[32];
+ u32 sa_spi;
+ u32 sa_seqnum[2];
+ u32 sa_seqmum_mask[2];
+ u32 sa_nonce;
+} __packed;
+
+struct sa_state {
+ u32 state_iv[4];
+ u32 state_byte_cnt[2];
+ u8 state_i_digest[32];
+} __packed;
+
+struct eip93_descriptor {
+ u32 pe_ctrl_stat_word;
+ u32 src_addr;
+ u32 dst_addr;
+ u32 sa_addr;
+ u32 state_addr;
+ u32 arc4_addr;
+ u32 user_id;
+ u32 pe_length_word;
+} __packed;
+
+#endif