1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/crypto/ti/dthev2-common.h b/drivers/crypto/ti/dthev2-common.h
new file mode 100644
index 000000000000..68c94acda8aa
--- /dev/null
+++ b/drivers/crypto/ti/dthev2-common.h
@@ -0,0 +1,101 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * K3 DTHE V2 crypto accelerator driver
+ *
+ * Copyright (C) Texas Instruments 2025 - https://www.ti.com
+ * Author: T Pratham <t-pratham@ti.com>
+ */
+
+#ifndef __TI_DTHEV2_H__
+#define __TI_DTHEV2_H__
+
+#include <crypto/aead.h>
+#include <crypto/aes.h>
+#include <crypto/algapi.h>
+#include <crypto/engine.h>
+#include <crypto/hash.h>
+#include <crypto/internal/aead.h>
+#include <crypto/internal/hash.h>
+#include <crypto/internal/skcipher.h>
+
+#include <linux/delay.h>
+#include <linux/dmaengine.h>
+#include <linux/dmapool.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/scatterlist.h>
+
+#define DTHE_REG_SIZE		4
+#define DTHE_DMA_TIMEOUT_MS	2000
+
+enum dthe_aes_mode {
+	DTHE_AES_ECB = 0,
+	DTHE_AES_CBC,
+};
+
+/* Driver specific struct definitions */
+
+/**
+ * struct dthe_data - DTHE_V2 driver instance data
+ * @dev: Device pointer
+ * @regs: Base address of the register space
+ * @list: list node for dev
+ * @engine: Crypto engine instance
+ * @dma_aes_rx: AES Rx DMA Channel
+ * @dma_aes_tx: AES Tx DMA Channel
+ * @dma_sha_tx: SHA Tx DMA Channel
+ */
+struct dthe_data {
+	struct device *dev;
+	void __iomem *regs;
+	struct list_head list;
+	struct crypto_engine *engine;
+
+	struct dma_chan *dma_aes_rx;
+	struct dma_chan *dma_aes_tx;
+
+	struct dma_chan *dma_sha_tx;
+};
+
+/**
+ * struct dthe_list - device data list head
+ * @dev_list: linked list head
+ * @lock: Spinlock protecting accesses to the list
+ */
+struct dthe_list {
+	struct list_head dev_list;
+	spinlock_t lock;
+};
+
+/**
+ * struct dthe_tfm_ctx - Transform ctx struct containing ctx for all sub-components of DTHE V2
+ * @dev_data: Device data struct pointer
+ * @keylen: AES key length
+ * @key: AES key
+ * @aes_mode: AES mode
+ */
+struct dthe_tfm_ctx {
+	struct dthe_data *dev_data;
+	unsigned int keylen;
+	u32 key[AES_KEYSIZE_256 / sizeof(u32)];
+	enum dthe_aes_mode aes_mode;
+};
+
+/**
+ * struct dthe_aes_req_ctx - AES engine req ctx struct
+ * @enc: flag indicating encryption or decryption operation
+ * @aes_compl: Completion variable for use in manual completion in case of DMA callback failure
+ */
+struct dthe_aes_req_ctx {
+	int enc;
+	struct completion aes_compl;
+};
+
+/* Struct definitions end */
+
+struct dthe_data *dthe_get_dev(struct dthe_tfm_ctx *ctx);
+
+int dthe_register_aes_algs(void);
+void dthe_unregister_aes_algs(void);
+
+#endif