marvell/linux/drivers/soc/asr/geu/asr-aes.h

#ifndef ASR_AES_H
#define ASR_AES_H

#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/crypto.h>
#include <crypto/aes.h>
#include <crypto/scatterwalk.h>
#include <crypto/algapi.h>
#include <crypto/internal/skcipher.h>

/* AES flags */
#define AES_FLAGS_ENCRYPT		(1 << 0)
#define AES_FLAGS_ECB			(0 << 1)
#define AES_FLAGS_CBC			(1 << 1)
#define AES_FLAGS_OPMODE_MASK 	(3 << 1)
#define AES_FLAGS_BUSY			(1 << 3)
#define AES_FLAGS_DMA			(1 << 4)

#define AES_FLAGS_MODE_MASK	(AES_FLAGS_OPMODE_MASK |	\
				 AES_FLAGS_ENCRYPT)

#define AES_FLAGS_PERSISTENT	AES_FLAGS_BUSY

#define BIT_SET					(1)
#define BIT_CLR					(0)

#define ASR_AES_QUEUE_LENGTH	50
#define ASR_AES_PRIORITY		300

#define ASR_AES_BUFFER_ORDER	2
#define ASR_AES_BUFFER_SIZE	(PAGE_SIZE << ASR_AES_BUFFER_ORDER)
#define ASR_AES_DMA_THRESHOLD	(256)

#define ASR_AES_HWKEY			(1 << 0)

enum {
	AES_DECRYPT = 0,
	AES_ENCRYPT = 1,
};

struct asr_geu_aes;

typedef int (*asr_aes_fn_t)(struct asr_geu_aes *);
typedef irqreturn_t (*asr_geu_irq_t)(u32, void *);

struct asr_aes_ctx {
	struct asr_geu_aes	*dd;
	asr_aes_fn_t		start;
	int			keylen;
	u32			key[AES_KEYSIZE_256 / sizeof(u32)];
	u16			block_size;
	bool		use_rkek;
};

struct asr_aes_reqctx {
	unsigned long		mode;
	bool		use_rkek;
	u32			lastc[AES_BLOCK_SIZE / sizeof(u32)];
};

struct asr_aes_dma {
	struct dma_chan		*chan;
	struct scatterlist	*sg;
	int			nents;
	unsigned int		remainder;
	unsigned int		sg_len;
};

struct asr_geu_aes {
	struct device		*dev;

#ifndef CONFIG_OPTEE
	void __iomem		*io_base;
	unsigned long		phys_base;
#endif
	struct crypto_async_request	*areq;

	struct asr_aes_ctx	*ctx;

	bool			is_async;
	bool			rkek_burned;
	unsigned long		flags;

	spinlock_t		lock;
	struct crypto_queue	queue;
	struct tasklet_struct	queue_task;

	int				int_mode;
	asr_aes_fn_t		resume;
	asr_aes_fn_t		cpu_transfer_complete;
	asr_geu_irq_t		aes_irq;
	struct tasklet_struct	done_task;

#ifndef CONFIG_OPTEE
	size_t			total;
	size_t			datalen;
	u32			*data;

	struct asr_aes_dma	src;
	struct asr_aes_dma	dst;

	size_t			buflen;
	void			*buf;

	struct scatterlist	aligned_sg;
	struct scatterlist	*real_dst;
#endif
};

#endif