crypto: omap-aes - move definitions over to a separate header file

Move over most of the omap-aes driver internal definitions to a separate
header file. This is done so that the same definitions can be used in
the upcoming AES-GCM support code.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 167 insertions, 0 deletions

diff --git a/drivers/crypto/omap-aes.h b/drivers/crypto/omap-aes.h
new file mode 100644
index 000000000000..ce4346e43664
--- /dev/null
+++ b/drivers/crypto/omap-aes.h
@@ -0,0 +1,167 @@
+/*
+ * Cryptographic API.
+ *
+ * Support for OMAP AES HW ACCELERATOR defines
+ *
+ * Copyright (c) 2015 Texas Instruments Incorporated
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ */
+#ifndef __OMAP_AES_H__
+#define __OMAP_AES_H__
+
+#define DST_MAXBURST			4
+#define DMA_MIN				(DST_MAXBURST * sizeof(u32))
+
+#define _calc_walked(inout) (dd->inout##_walk.offset - dd->inout##_sg->offset)
+
+/*
+ * OMAP TRM gives bitfields as start:end, where start is the higher bit
+ * number. For example 7:0
+ */
+#define FLD_MASK(start, end)	(((1 << ((start) - (end) + 1)) - 1) << (end))
+#define FLD_VAL(val, start, end) (((val) << (end)) & FLD_MASK(start, end))
+
+#define AES_REG_KEY(dd, x)		((dd)->pdata->key_ofs - \
+						(((x) ^ 0x01) * 0x04))
+#define AES_REG_IV(dd, x)		((dd)->pdata->iv_ofs + ((x) * 0x04))
+
+#define AES_REG_CTRL(dd)		((dd)->pdata->ctrl_ofs)
+#define AES_REG_CTRL_CTR_WIDTH_MASK	GENMASK(8, 7)
+#define AES_REG_CTRL_CTR_WIDTH_32	0
+#define AES_REG_CTRL_CTR_WIDTH_64	BIT(7)
+#define AES_REG_CTRL_CTR_WIDTH_96	BIT(8)
+#define AES_REG_CTRL_CTR_WIDTH_128	GENMASK(8, 7)
+#define AES_REG_CTRL_CTR		BIT(6)
+#define AES_REG_CTRL_CBC		BIT(5)
+#define AES_REG_CTRL_KEY_SIZE		GENMASK(4, 3)
+#define AES_REG_CTRL_DIRECTION		BIT(2)
+#define AES_REG_CTRL_INPUT_READY	BIT(1)
+#define AES_REG_CTRL_OUTPUT_READY	BIT(0)
+#define AES_REG_CTRL_MASK		GENMASK(24, 2)
+
+#define AES_REG_DATA_N(dd, x)		((dd)->pdata->data_ofs + ((x) * 0x04))
+
+#define AES_REG_REV(dd)			((dd)->pdata->rev_ofs)
+
+#define AES_REG_MASK(dd)		((dd)->pdata->mask_ofs)
+#define AES_REG_MASK_SIDLE		BIT(6)
+#define AES_REG_MASK_START		BIT(5)
+#define AES_REG_MASK_DMA_OUT_EN		BIT(3)
+#define AES_REG_MASK_DMA_IN_EN		BIT(2)
+#define AES_REG_MASK_SOFTRESET		BIT(1)
+#define AES_REG_AUTOIDLE		BIT(0)
+
+#define AES_REG_LENGTH_N(x)		(0x54 + ((x) * 0x04))
+
+#define AES_REG_IRQ_STATUS(dd)         ((dd)->pdata->irq_status_ofs)
+#define AES_REG_IRQ_ENABLE(dd)         ((dd)->pdata->irq_enable_ofs)
+#define AES_REG_IRQ_DATA_IN            BIT(1)
+#define AES_REG_IRQ_DATA_OUT           BIT(2)
+#define DEFAULT_TIMEOUT		(5 * HZ)
+
+#define DEFAULT_AUTOSUSPEND_DELAY	1000
+
+#define FLAGS_MODE_MASK		0x000f
+#define FLAGS_ENCRYPT		BIT(0)
+#define FLAGS_CBC		BIT(1)
+#define FLAGS_GIV		BIT(2)
+#define FLAGS_CTR		BIT(3)
+
+#define FLAGS_INIT		BIT(4)
+#define FLAGS_FAST		BIT(5)
+#define FLAGS_BUSY		BIT(6)
+
+#define FLAGS_IN_DATA_ST_SHIFT	8
+#define FLAGS_OUT_DATA_ST_SHIFT	10
+
+#define AES_BLOCK_WORDS		(AES_BLOCK_SIZE >> 2)
+
+struct omap_aes_ctx {
+	int		keylen;
+	u32		key[AES_KEYSIZE_256 / sizeof(u32)];
+	struct crypto_skcipher	*fallback;
+};
+
+struct omap_aes_reqctx {
+	struct omap_aes_dev *dd;
+	unsigned long mode;
+};
+
+#define OMAP_AES_QUEUE_LENGTH	1
+#define OMAP_AES_CACHE_SIZE	0
+
+struct omap_aes_algs_info {
+	struct crypto_alg	*algs_list;
+	unsigned int		size;
+	unsigned int		registered;
+};
+
+struct omap_aes_pdata {
+	struct omap_aes_algs_info	*algs_info;
+	unsigned int	algs_info_size;
+
+	void		(*trigger)(struct omap_aes_dev *dd, int length);
+
+	u32		key_ofs;
+	u32		iv_ofs;
+	u32		ctrl_ofs;
+	u32		data_ofs;
+	u32		rev_ofs;
+	u32		mask_ofs;
+	u32             irq_enable_ofs;
+	u32             irq_status_ofs;
+
+	u32		dma_enable_in;
+	u32		dma_enable_out;
+	u32		dma_start;
+
+	u32		major_mask;
+	u32		major_shift;
+	u32		minor_mask;
+	u32		minor_shift;
+};
+
+struct omap_aes_dev {
+	struct list_head	list;
+	unsigned long		phys_base;
+	void __iomem		*io_base;
+	struct omap_aes_ctx	*ctx;
+	struct device		*dev;
+	unsigned long		flags;
+	int			err;
+
+	struct tasklet_struct	done_task;
+
+	struct ablkcipher_request	*req;
+	struct crypto_engine		*engine;
+
+	/*
+	 * total is used by PIO mode for book keeping so introduce
+	 * variable total_save as need it to calc page_order
+	 */
+	size_t				total;
+	size_t				total_save;
+
+	struct scatterlist		*in_sg;
+	struct scatterlist		*out_sg;
+
+	/* Buffers for copying for unaligned cases */
+	struct scatterlist		in_sgl;
+	struct scatterlist		out_sgl;
+	struct scatterlist		*orig_out;
+
+	struct scatter_walk		in_walk;
+	struct scatter_walk		out_walk;
+	struct dma_chan		*dma_lch_in;
+	struct dma_chan		*dma_lch_out;
+	int			in_sg_len;
+	int			out_sg_len;
+	int			pio_only;
+	const struct omap_aes_pdata	*pdata;
+};
+
+#endif