Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1359 insertions, 0 deletions

diff --git a/drivers/crypto/mediatek/mtk-sha.c b/drivers/crypto/mediatek/mtk-sha.c
new file mode 100644
index 000000000..5f4f845ad
--- /dev/null
+++ b/drivers/crypto/mediatek/mtk-sha.c
@@ -0,0 +1,1359 @@
+/*
+ * Cryptographic API.
+ *
+ * Driver for EIP97 SHA1/SHA2(HMAC) acceleration.
+ *
+ * Copyright (c) 2016 Ryder Lee <ryder.lee@mediatek.com>
+ *
+ * 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.
+ *
+ * Some ideas are from atmel-sha.c and omap-sham.c drivers.
+ */
+
+#include <crypto/hmac.h>
+#include <crypto/sha.h>
+#include "mtk-platform.h"
+
+#define SHA_ALIGN_MSK		(sizeof(u32) - 1)
+#define SHA_QUEUE_SIZE		512
+#define SHA_BUF_SIZE		((u32)PAGE_SIZE)
+
+#define SHA_OP_UPDATE		1
+#define SHA_OP_FINAL		2
+
+#define SHA_DATA_LEN_MSK	cpu_to_le32(GENMASK(16, 0))
+#define SHA_MAX_DIGEST_BUF_SIZE	32
+
+/* SHA command token */
+#define SHA_CT_SIZE		5
+#define SHA_CT_CTRL_HDR		cpu_to_le32(0x02220000)
+#define SHA_CMD0		cpu_to_le32(0x03020000)
+#define SHA_CMD1		cpu_to_le32(0x21060000)
+#define SHA_CMD2		cpu_to_le32(0xe0e63802)
+
+/* SHA transform information */
+#define SHA_TFM_HASH		cpu_to_le32(0x2 << 0)
+#define SHA_TFM_SIZE(x)		cpu_to_le32((x) << 8)
+#define SHA_TFM_START		cpu_to_le32(0x1 << 4)
+#define SHA_TFM_CONTINUE	cpu_to_le32(0x1 << 5)
+#define SHA_TFM_HASH_STORE	cpu_to_le32(0x1 << 19)
+#define SHA_TFM_SHA1		cpu_to_le32(0x2 << 23)
+#define SHA_TFM_SHA256		cpu_to_le32(0x3 << 23)
+#define SHA_TFM_SHA224		cpu_to_le32(0x4 << 23)
+#define SHA_TFM_SHA512		cpu_to_le32(0x5 << 23)
+#define SHA_TFM_SHA384		cpu_to_le32(0x6 << 23)
+#define SHA_TFM_DIGEST(x)	cpu_to_le32(((x) & GENMASK(3, 0)) << 24)
+
+/* SHA flags */
+#define SHA_FLAGS_BUSY		BIT(0)
+#define	SHA_FLAGS_FINAL		BIT(1)
+#define SHA_FLAGS_FINUP		BIT(2)
+#define SHA_FLAGS_SG		BIT(3)
+#define SHA_FLAGS_ALGO_MSK	GENMASK(8, 4)
+#define SHA_FLAGS_SHA1		BIT(4)
+#define SHA_FLAGS_SHA224	BIT(5)
+#define SHA_FLAGS_SHA256	BIT(6)
+#define SHA_FLAGS_SHA384	BIT(7)
+#define SHA_FLAGS_SHA512	BIT(8)
+#define SHA_FLAGS_HMAC		BIT(9)
+#define SHA_FLAGS_PAD		BIT(10)
+
+/**
+ * mtk_sha_info - hardware information of AES
+ * @cmd:	command token, hardware instruction
+ * @tfm:	transform state of cipher algorithm.
+ * @state:	contains keys and initial vectors.
+ *
+ */
+struct mtk_sha_info {
+	__le32 ctrl[2];
+	__le32 cmd[3];
+	__le32 tfm[2];
+	__le32 digest[SHA_MAX_DIGEST_BUF_SIZE];
+};
+
+struct mtk_sha_reqctx {
+	struct mtk_sha_info info;
+	unsigned long flags;
+	unsigned long op;
+
+	u64 digcnt;
+	size_t bufcnt;
+	dma_addr_t dma_addr;
+
+	__le32 ct_hdr;
+	u32 ct_size;
+	dma_addr_t ct_dma;
+	dma_addr_t tfm_dma;
+
+	/* Walk state */
+	struct scatterlist *sg;
+	u32 offset;	/* Offset in current sg */
+	u32 total;	/* Total request */
+	size_t ds;
+	size_t bs;
+
+	u8 *buffer;
+};
+
+struct mtk_sha_hmac_ctx {
+	struct crypto_shash	*shash;
+	u8 ipad[SHA512_BLOCK_SIZE] __aligned(sizeof(u32));
+	u8 opad[SHA512_BLOCK_SIZE] __aligned(sizeof(u32));
+};
+
+struct mtk_sha_ctx {
+	struct mtk_cryp *cryp;
+	unsigned long flags;
+	u8 id;
+	u8 buf[SHA_BUF_SIZE] __aligned(sizeof(u32));
+
+	struct mtk_sha_hmac_ctx	base[0];
+};
+
+struct mtk_sha_drv {
+	struct list_head dev_list;
+	/* Device list lock */
+	spinlock_t lock;
+};
+
+static struct mtk_sha_drv mtk_sha = {
+	.dev_list = LIST_HEAD_INIT(mtk_sha.dev_list),
+	.lock = __SPIN_LOCK_UNLOCKED(mtk_sha.lock),
+};
+
+static int mtk_sha_handle_queue(struct mtk_cryp *cryp, u8 id,
+				struct ahash_request *req);
+
+static inline u32 mtk_sha_read(struct mtk_cryp *cryp, u32 offset)
+{
+	return readl_relaxed(cryp->base + offset);
+}
+
+static inline void mtk_sha_write(struct mtk_cryp *cryp,
+				 u32 offset, u32 value)
+{
+	writel_relaxed(value, cryp->base + offset);
+}
+
+static inline void mtk_sha_ring_shift(struct mtk_ring *ring,
+				      struct mtk_desc **cmd_curr,
+				      struct mtk_desc **res_curr,
+				      int *count)
+{
+	*cmd_curr = ring->cmd_next++;
+	*res_curr = ring->res_next++;
+	(*count)++;
+
+	if (ring->cmd_next == ring->cmd_base + MTK_DESC_NUM) {
+		ring->cmd_next = ring->cmd_base;
+		ring->res_next = ring->res_base;
+	}
+}
+
+static struct mtk_cryp *mtk_sha_find_dev(struct mtk_sha_ctx *tctx)
+{
+	struct mtk_cryp *cryp = NULL;
+	struct mtk_cryp *tmp;
+
+	spin_lock_bh(&mtk_sha.lock);
+	if (!tctx->cryp) {
+		list_for_each_entry(tmp, &mtk_sha.dev_list, sha_list) {
+			cryp = tmp;
+			break;
+		}
+		tctx->cryp = cryp;
+	} else {
+		cryp = tctx->cryp;
+	}
+
+	/*
+	 * Assign record id to tfm in round-robin fashion, and this
+	 * will help tfm to bind  to corresponding descriptor rings.
+	 */
+	tctx->id = cryp->rec;
+	cryp->rec = !cryp->rec;
+
+	spin_unlock_bh(&mtk_sha.lock);
+
+	return cryp;
+}
+
+static int mtk_sha_append_sg(struct mtk_sha_reqctx *ctx)
+{
+	size_t count;
+
+	while ((ctx->bufcnt < SHA_BUF_SIZE) && ctx->total) {
+		count = min(ctx->sg->length - ctx->offset, ctx->total);
+		count = min(count, SHA_BUF_SIZE - ctx->bufcnt);
+
+		if (count <= 0) {
+			/*
+			 * Check if count <= 0 because the buffer is full or
+			 * because the sg length is 0. In the latest case,
+			 * check if there is another sg in the list, a 0 length
+			 * sg doesn't necessarily mean the end of the sg list.
+			 */
+			if ((ctx->sg->length == 0) && !sg_is_last(ctx->sg)) {
+				ctx->sg = sg_next(ctx->sg);
+				continue;
+			} else {
+				break;
+			}
+		}
+
+		scatterwalk_map_and_copy(ctx->buffer + ctx->bufcnt, ctx->sg,
+					 ctx->offset, count, 0);
+
+		ctx->bufcnt += count;
+		ctx->offset += count;
+		ctx->total -= count;
+
+		if (ctx->offset == ctx->sg->length) {
+			ctx->sg = sg_next(ctx->sg);
+			if (ctx->sg)
+				ctx->offset = 0;
+			else
+				ctx->total = 0;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * The purpose of this padding is to ensure that the padded message is a
+ * multiple of 512 bits (SHA1/SHA224/SHA256) or 1024 bits (SHA384/SHA512).
+ * The bit "1" is appended at the end of the message followed by
+ * "padlen-1" zero bits. Then a 64 bits block (SHA1/SHA224/SHA256) or
+ * 128 bits block (SHA384/SHA512) equals to the message length in bits
+ * is appended.
+ *
+ * For SHA1/SHA224/SHA256, padlen is calculated as followed:
+ *  - if message length < 56 bytes then padlen = 56 - message length
+ *  - else padlen = 64 + 56 - message length
+ *
+ * For SHA384/SHA512, padlen is calculated as followed:
+ *  - if message length < 112 bytes then padlen = 112 - message length
+ *  - else padlen = 128 + 112 - message length
+ */
+static void mtk_sha_fill_padding(struct mtk_sha_reqctx *ctx, u32 len)
+{
+	u32 index, padlen;
+	u64 bits[2];
+	u64 size = ctx->digcnt;
+
+	size += ctx->bufcnt;
+	size += len;
+
+	bits[1] = cpu_to_be64(size << 3);
+	bits[0] = cpu_to_be64(size >> 61);
+
+	switch (ctx->flags & SHA_FLAGS_ALGO_MSK) {
+	case SHA_FLAGS_SHA384:
+	case SHA_FLAGS_SHA512:
+		index = ctx->bufcnt & 0x7f;
+		padlen = (index < 112) ? (112 - index) : ((128 + 112) - index);
+		*(ctx->buffer + ctx->bufcnt) = 0x80;
+		memset(ctx->buffer + ctx->bufcnt + 1, 0, padlen - 1);
+		memcpy(ctx->buffer + ctx->bufcnt + padlen, bits, 16);
+		ctx->bufcnt += padlen + 16;
+		ctx->flags |= SHA_FLAGS_PAD;
+		break;
+
+	default:
+		index = ctx->bufcnt & 0x3f;
+		padlen = (index < 56) ? (56 - index) : ((64 + 56) - index);
+		*(ctx->buffer + ctx->bufcnt) = 0x80;
+		memset(ctx->buffer + ctx->bufcnt + 1, 0, padlen - 1);
+		memcpy(ctx->buffer + ctx->bufcnt + padlen, &bits[1], 8);
+		ctx->bufcnt += padlen + 8;
+		ctx->flags |= SHA_FLAGS_PAD;
+		break;
+	}
+}
+
+/* Initialize basic transform information of SHA */
+static void mtk_sha_info_init(struct mtk_sha_reqctx *ctx)
+{
+	struct mtk_sha_info *info = &ctx->info;
+
+	ctx->ct_hdr = SHA_CT_CTRL_HDR;
+	ctx->ct_size = SHA_CT_SIZE;
+
+	info->tfm[0] = SHA_TFM_HASH | SHA_TFM_SIZE(SIZE_IN_WORDS(ctx->ds));
+
+	switch (ctx->flags & SHA_FLAGS_ALGO_MSK) {
+	case SHA_FLAGS_SHA1:
+		info->tfm[0] |= SHA_TFM_SHA1;
+		break;
+	case SHA_FLAGS_SHA224:
+		info->tfm[0] |= SHA_TFM_SHA224;
+		break;
+	case SHA_FLAGS_SHA256:
+		info->tfm[0] |= SHA_TFM_SHA256;
+		break;
+	case SHA_FLAGS_SHA384:
+		info->tfm[0] |= SHA_TFM_SHA384;
+		break;
+	case SHA_FLAGS_SHA512:
+		info->tfm[0] |= SHA_TFM_SHA512;
+		break;
+
+	default:
+		/* Should not happen... */
+		return;
+	}
+
+	info->tfm[1] = SHA_TFM_HASH_STORE;
+	info->ctrl[0] = info->tfm[0] | SHA_TFM_CONTINUE | SHA_TFM_START;
+	info->ctrl[1] = info->tfm[1];
+
+	info->cmd[0] = SHA_CMD0;
+	info->cmd[1] = SHA_CMD1;
+	info->cmd[2] = SHA_CMD2 | SHA_TFM_DIGEST(SIZE_IN_WORDS(ctx->ds));
+}
+
+/*
+ * Update input data length field of transform information and
+ * map it to DMA region.
+ */
+static int mtk_sha_info_update(struct mtk_cryp *cryp,
+			       struct mtk_sha_rec *sha,
+			       size_t len1, size_t len2)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(sha->req);
+	struct mtk_sha_info *info = &ctx->info;
+
+	ctx->ct_hdr &= ~SHA_DATA_LEN_MSK;
+	ctx->ct_hdr |= cpu_to_le32(len1 + len2);
+	info->cmd[0] &= ~SHA_DATA_LEN_MSK;
+	info->cmd[0] |= cpu_to_le32(len1 + len2);
+
+	/* Setting SHA_TFM_START only for the first iteration */
+	if (ctx->digcnt)
+		info->ctrl[0] &= ~SHA_TFM_START;
+
+	ctx->digcnt += len1;
+
+	ctx->ct_dma = dma_map_single(cryp->dev, info, sizeof(*info),
+				     DMA_BIDIRECTIONAL);
+	if (unlikely(dma_mapping_error(cryp->dev, ctx->ct_dma))) {
+		dev_err(cryp->dev, "dma %zu bytes error\n", sizeof(*info));
+		return -EINVAL;
+	}
+
+	ctx->tfm_dma = ctx->ct_dma + sizeof(info->ctrl) + sizeof(info->cmd);
+
+	return 0;
+}
+
+/*
+ * Because of hardware limitation, we must pre-calculate the inner
+ * and outer digest that need to be processed firstly by engine, then
+ * apply the result digest to the input message. These complex hashing
+ * procedures limits HMAC performance, so we use fallback SW encoding.
+ */
+static int mtk_sha_finish_hmac(struct ahash_request *req)
+{
+	struct mtk_sha_ctx *tctx = crypto_tfm_ctx(req->base.tfm);
+	struct mtk_sha_hmac_ctx *bctx = tctx->base;
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(req);
+
+	SHASH_DESC_ON_STACK(shash, bctx->shash);
+
+	shash->tfm = bctx->shash;
+	shash->flags = 0; /* not CRYPTO_TFM_REQ_MAY_SLEEP */
+
+	return crypto_shash_init(shash) ?:
+	       crypto_shash_update(shash, bctx->opad, ctx->bs) ?:
+	       crypto_shash_finup(shash, req->result, ctx->ds, req->result);
+}
+
+/* Initialize request context */
+static int mtk_sha_init(struct ahash_request *req)
+{
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct mtk_sha_ctx *tctx = crypto_ahash_ctx(tfm);
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(req);
+
+	ctx->flags = 0;
+	ctx->ds = crypto_ahash_digestsize(tfm);
+
+	switch (ctx->ds) {
+	case SHA1_DIGEST_SIZE:
+		ctx->flags |= SHA_FLAGS_SHA1;
+		ctx->bs = SHA1_BLOCK_SIZE;
+		break;
+	case SHA224_DIGEST_SIZE:
+		ctx->flags |= SHA_FLAGS_SHA224;
+		ctx->bs = SHA224_BLOCK_SIZE;
+		break;
+	case SHA256_DIGEST_SIZE:
+		ctx->flags |= SHA_FLAGS_SHA256;
+		ctx->bs = SHA256_BLOCK_SIZE;
+		break;
+	case SHA384_DIGEST_SIZE:
+		ctx->flags |= SHA_FLAGS_SHA384;
+		ctx->bs = SHA384_BLOCK_SIZE;
+		break;
+	case SHA512_DIGEST_SIZE:
+		ctx->flags |= SHA_FLAGS_SHA512;
+		ctx->bs = SHA512_BLOCK_SIZE;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ctx->bufcnt = 0;
+	ctx->digcnt = 0;
+	ctx->buffer = tctx->buf;
+
+	if (tctx->flags & SHA_FLAGS_HMAC) {
+		struct mtk_sha_hmac_ctx *bctx = tctx->base;
+
+		memcpy(ctx->buffer, bctx->ipad, ctx->bs);
+		ctx->bufcnt = ctx->bs;
+		ctx->flags |= SHA_FLAGS_HMAC;
+	}
+
+	return 0;
+}
+
+static int mtk_sha_xmit(struct mtk_cryp *cryp, struct mtk_sha_rec *sha,
+			dma_addr_t addr1, size_t len1,
+			dma_addr_t addr2, size_t len2)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(sha->req);
+	struct mtk_ring *ring = cryp->ring[sha->id];
+	struct mtk_desc *cmd, *res;
+	int err, count = 0;
+
+	err = mtk_sha_info_update(cryp, sha, len1, len2);
+	if (err)
+		return err;
+
+	/* Fill in the command/result descriptors */
+	mtk_sha_ring_shift(ring, &cmd, &res, &count);
+
+	res->hdr = MTK_DESC_FIRST | MTK_DESC_BUF_LEN(len1);
+	cmd->hdr = MTK_DESC_FIRST | MTK_DESC_BUF_LEN(len1) |
+		   MTK_DESC_CT_LEN(ctx->ct_size);
+	cmd->buf = cpu_to_le32(addr1);
+	cmd->ct = cpu_to_le32(ctx->ct_dma);
+	cmd->ct_hdr = ctx->ct_hdr;
+	cmd->tfm = cpu_to_le32(ctx->tfm_dma);
+
+	if (len2) {
+		mtk_sha_ring_shift(ring, &cmd, &res, &count);
+
+		res->hdr = MTK_DESC_BUF_LEN(len2);
+		cmd->hdr = MTK_DESC_BUF_LEN(len2);
+		cmd->buf = cpu_to_le32(addr2);
+	}
+
+	cmd->hdr |= MTK_DESC_LAST;
+	res->hdr |= MTK_DESC_LAST;
+
+	/*
+	 * Make sure that all changes to the DMA ring are done before we
+	 * start engine.
+	 */
+	wmb();
+	/* Start DMA transfer */
+	mtk_sha_write(cryp, RDR_PREP_COUNT(sha->id), MTK_DESC_CNT(count));
+	mtk_sha_write(cryp, CDR_PREP_COUNT(sha->id), MTK_DESC_CNT(count));
+
+	return -EINPROGRESS;
+}
+
+static int mtk_sha_dma_map(struct mtk_cryp *cryp,
+			   struct mtk_sha_rec *sha,
+			   struct mtk_sha_reqctx *ctx,
+			   size_t count)
+{
+	ctx->dma_addr = dma_map_single(cryp->dev, ctx->buffer,
+				       SHA_BUF_SIZE, DMA_TO_DEVICE);
+	if (unlikely(dma_mapping_error(cryp->dev, ctx->dma_addr))) {
+		dev_err(cryp->dev, "dma map error\n");
+		return -EINVAL;
+	}
+
+	ctx->flags &= ~SHA_FLAGS_SG;
+
+	return mtk_sha_xmit(cryp, sha, ctx->dma_addr, count, 0, 0);
+}
+
+static int mtk_sha_update_slow(struct mtk_cryp *cryp,
+			       struct mtk_sha_rec *sha)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(sha->req);
+	size_t count;
+	u32 final;
+
+	mtk_sha_append_sg(ctx);
+
+	final = (ctx->flags & SHA_FLAGS_FINUP) && !ctx->total;
+
+	dev_dbg(cryp->dev, "slow: bufcnt: %zu\n", ctx->bufcnt);
+
+	if (final) {
+		sha->flags |= SHA_FLAGS_FINAL;
+		mtk_sha_fill_padding(ctx, 0);
+	}
+
+	if (final || (ctx->bufcnt == SHA_BUF_SIZE && ctx->total)) {
+		count = ctx->bufcnt;
+		ctx->bufcnt = 0;
+
+		return mtk_sha_dma_map(cryp, sha, ctx, count);
+	}
+	return 0;
+}
+
+static int mtk_sha_update_start(struct mtk_cryp *cryp,
+				struct mtk_sha_rec *sha)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(sha->req);
+	u32 len, final, tail;
+	struct scatterlist *sg;
+
+	if (!ctx->total)
+		return 0;
+
+	if (ctx->bufcnt || ctx->offset)
+		return mtk_sha_update_slow(cryp, sha);
+
+	sg = ctx->sg;
+
+	if (!IS_ALIGNED(sg->offset, sizeof(u32)))
+		return mtk_sha_update_slow(cryp, sha);
+
+	if (!sg_is_last(sg) && !IS_ALIGNED(sg->length, ctx->bs))
+		/* size is not ctx->bs aligned */
+		return mtk_sha_update_slow(cryp, sha);
+
+	len = min(ctx->total, sg->length);
+
+	if (sg_is_last(sg)) {
+		if (!(ctx->flags & SHA_FLAGS_FINUP)) {
+			/* not last sg must be ctx->bs aligned */
+			tail = len & (ctx->bs - 1);
+			len -= tail;
+		}
+	}
+
+	ctx->total -= len;
+	ctx->offset = len; /* offset where to start slow */
+
+	final = (ctx->flags & SHA_FLAGS_FINUP) && !ctx->total;
+
+	/* Add padding */
+	if (final) {
+		size_t count;
+
+		tail = len & (ctx->bs - 1);
+		len -= tail;
+		ctx->total += tail;
+		ctx->offset = len; /* offset where to start slow */
+
+		sg = ctx->sg;
+		mtk_sha_append_sg(ctx);
+		mtk_sha_fill_padding(ctx, len);
+
+		ctx->dma_addr = dma_map_single(cryp->dev, ctx->buffer,
+					       SHA_BUF_SIZE, DMA_TO_DEVICE);
+		if (unlikely(dma_mapping_error(cryp->dev, ctx->dma_addr))) {
+			dev_err(cryp->dev, "dma map bytes error\n");
+			return -EINVAL;
+		}
+
+		sha->flags |= SHA_FLAGS_FINAL;
+		count = ctx->bufcnt;
+		ctx->bufcnt = 0;
+
+		if (len == 0) {
+			ctx->flags &= ~SHA_FLAGS_SG;
+			return mtk_sha_xmit(cryp, sha, ctx->dma_addr,
+					    count, 0, 0);
+
+		} else {
+			ctx->sg = sg;
+			if (!dma_map_sg(cryp->dev, ctx->sg, 1, DMA_TO_DEVICE)) {
+				dev_err(cryp->dev, "dma_map_sg error\n");
+				return -EINVAL;
+			}
+
+			ctx->flags |= SHA_FLAGS_SG;
+			return mtk_sha_xmit(cryp, sha, sg_dma_address(ctx->sg),
+					    len, ctx->dma_addr, count);
+		}
+	}
+
+	if (!dma_map_sg(cryp->dev, ctx->sg, 1, DMA_TO_DEVICE)) {
+		dev_err(cryp->dev, "dma_map_sg  error\n");
+		return -EINVAL;
+	}
+
+	ctx->flags |= SHA_FLAGS_SG;
+
+	return mtk_sha_xmit(cryp, sha, sg_dma_address(ctx->sg),
+			    len, 0, 0);
+}
+
+static int mtk_sha_final_req(struct mtk_cryp *cryp,
+			     struct mtk_sha_rec *sha)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(sha->req);
+	size_t count;
+
+	mtk_sha_fill_padding(ctx, 0);
+
+	sha->flags |= SHA_FLAGS_FINAL;
+	count = ctx->bufcnt;
+	ctx->bufcnt = 0;
+
+	return mtk_sha_dma_map(cryp, sha, ctx, count);
+}
+
+/* Copy ready hash (+ finalize hmac) */
+static int mtk_sha_finish(struct ahash_request *req)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(req);
+	__le32 *digest = ctx->info.digest;
+	u32 *result = (u32 *)req->result;
+	int i;
+
+	/* Get the hash from the digest buffer */
+	for (i = 0; i < SIZE_IN_WORDS(ctx->ds); i++)
+		result[i] = le32_to_cpu(digest[i]);
+
+	if (ctx->flags & SHA_FLAGS_HMAC)
+		return mtk_sha_finish_hmac(req);
+
+	return 0;
+}
+
+static void mtk_sha_finish_req(struct mtk_cryp *cryp,
+			       struct mtk_sha_rec *sha,
+			       int err)
+{
+	if (likely(!err && (SHA_FLAGS_FINAL & sha->flags)))
+		err = mtk_sha_finish(sha->req);
+
+	sha->flags &= ~(SHA_FLAGS_BUSY | SHA_FLAGS_FINAL);
+
+	sha->req->base.complete(&sha->req->base, err);
+
+	/* Handle new request */
+	tasklet_schedule(&sha->queue_task);
+}
+
+static int mtk_sha_handle_queue(struct mtk_cryp *cryp, u8 id,
+				struct ahash_request *req)
+{
+	struct mtk_sha_rec *sha = cryp->sha[id];
+	struct crypto_async_request *async_req, *backlog;
+	struct mtk_sha_reqctx *ctx;
+	unsigned long flags;
+	int err = 0, ret = 0;
+
+	spin_lock_irqsave(&sha->lock, flags);
+	if (req)
+		ret = ahash_enqueue_request(&sha->queue, req);
+
+	if (SHA_FLAGS_BUSY & sha->flags) {
+		spin_unlock_irqrestore(&sha->lock, flags);
+		return ret;
+	}
+
+	backlog = crypto_get_backlog(&sha->queue);
+	async_req = crypto_dequeue_request(&sha->queue);
+	if (async_req)
+		sha->flags |= SHA_FLAGS_BUSY;
+	spin_unlock_irqrestore(&sha->lock, flags);
+
+	if (!async_req)
+		return ret;
+
+	if (backlog)
+		backlog->complete(backlog, -EINPROGRESS);
+
+	req = ahash_request_cast(async_req);
+	ctx = ahash_request_ctx(req);
+
+	sha->req = req;
+
+	mtk_sha_info_init(ctx);
+
+	if (ctx->op == SHA_OP_UPDATE) {
+		err = mtk_sha_update_start(cryp, sha);
+		if (err != -EINPROGRESS && (ctx->flags & SHA_FLAGS_FINUP))
+			/* No final() after finup() */
+			err = mtk_sha_final_req(cryp, sha);
+	} else if (ctx->op == SHA_OP_FINAL) {
+		err = mtk_sha_final_req(cryp, sha);
+	}
+
+	if (unlikely(err != -EINPROGRESS))
+		/* Task will not finish it, so do it here */
+		mtk_sha_finish_req(cryp, sha, err);
+
+	return ret;
+}
+
+static int mtk_sha_enqueue(struct ahash_request *req, u32 op)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(req);
+	struct mtk_sha_ctx *tctx = crypto_tfm_ctx(req->base.tfm);
+
+	ctx->op = op;
+
+	return mtk_sha_handle_queue(tctx->cryp, tctx->id, req);
+}
+
+static void mtk_sha_unmap(struct mtk_cryp *cryp, struct mtk_sha_rec *sha)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(sha->req);
+
+	dma_unmap_single(cryp->dev, ctx->ct_dma, sizeof(ctx->info),
+			 DMA_BIDIRECTIONAL);
+
+	if (ctx->flags & SHA_FLAGS_SG) {
+		dma_unmap_sg(cryp->dev, ctx->sg, 1, DMA_TO_DEVICE);
+		if (ctx->sg->length == ctx->offset) {
+			ctx->sg = sg_next(ctx->sg);
+			if (ctx->sg)
+				ctx->offset = 0;
+		}
+		if (ctx->flags & SHA_FLAGS_PAD) {
+			dma_unmap_single(cryp->dev, ctx->dma_addr,
+					 SHA_BUF_SIZE, DMA_TO_DEVICE);
+		}
+	} else
+		dma_unmap_single(cryp->dev, ctx->dma_addr,
+				 SHA_BUF_SIZE, DMA_TO_DEVICE);
+}
+
+static void mtk_sha_complete(struct mtk_cryp *cryp,
+			     struct mtk_sha_rec *sha)
+{
+	int err = 0;
+
+	err = mtk_sha_update_start(cryp, sha);
+	if (err != -EINPROGRESS)
+		mtk_sha_finish_req(cryp, sha, err);
+}
+
+static int mtk_sha_update(struct ahash_request *req)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(req);
+
+	ctx->total = req->nbytes;
+	ctx->sg = req->src;
+	ctx->offset = 0;
+
+	if ((ctx->bufcnt + ctx->total < SHA_BUF_SIZE) &&
+	    !(ctx->flags & SHA_FLAGS_FINUP))
+		return mtk_sha_append_sg(ctx);
+
+	return mtk_sha_enqueue(req, SHA_OP_UPDATE);
+}
+
+static int mtk_sha_final(struct ahash_request *req)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(req);
+
+	ctx->flags |= SHA_FLAGS_FINUP;
+
+	if (ctx->flags & SHA_FLAGS_PAD)
+		return mtk_sha_finish(req);
+
+	return mtk_sha_enqueue(req, SHA_OP_FINAL);
+}
+
+static int mtk_sha_finup(struct ahash_request *req)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(req);
+	int err1, err2;
+
+	ctx->flags |= SHA_FLAGS_FINUP;
+
+	err1 = mtk_sha_update(req);
+	if (err1 == -EINPROGRESS || err1 == -EBUSY)
+		return err1;
+	/*
+	 * final() has to be always called to cleanup resources
+	 * even if update() failed
+	 */
+	err2 = mtk_sha_final(req);
+
+	return err1 ?: err2;
+}
+
+static int mtk_sha_digest(struct ahash_request *req)
+{
+	return mtk_sha_init(req) ?: mtk_sha_finup(req);
+}
+
+static int mtk_sha_setkey(struct crypto_ahash *tfm, const u8 *key,
+			  u32 keylen)
+{
+	struct mtk_sha_ctx *tctx = crypto_ahash_ctx(tfm);
+	struct mtk_sha_hmac_ctx *bctx = tctx->base;
+	size_t bs = crypto_shash_blocksize(bctx->shash);
+	size_t ds = crypto_shash_digestsize(bctx->shash);
+	int err, i;
+
+	SHASH_DESC_ON_STACK(shash, bctx->shash);
+
+	shash->tfm = bctx->shash;
+	shash->flags = crypto_shash_get_flags(bctx->shash) &
+		       CRYPTO_TFM_REQ_MAY_SLEEP;
+
+	if (keylen > bs) {
+		err = crypto_shash_digest(shash, key, keylen, bctx->ipad);
+		if (err)
+			return err;
+		keylen = ds;
+	} else {
+		memcpy(bctx->ipad, key, keylen);
+	}
+
+	memset(bctx->ipad + keylen, 0, bs - keylen);
+	memcpy(bctx->opad, bctx->ipad, bs);
+
+	for (i = 0; i < bs; i++) {
+		bctx->ipad[i] ^= HMAC_IPAD_VALUE;
+		bctx->opad[i] ^= HMAC_OPAD_VALUE;
+	}
+
+	return 0;
+}
+
+static int mtk_sha_export(struct ahash_request *req, void *out)
+{
+	const struct mtk_sha_reqctx *ctx = ahash_request_ctx(req);
+
+	memcpy(out, ctx, sizeof(*ctx));
+	return 0;
+}
+
+static int mtk_sha_import(struct ahash_request *req, const void *in)
+{
+	struct mtk_sha_reqctx *ctx = ahash_request_ctx(req);
+
+	memcpy(ctx, in, sizeof(*ctx));
+	return 0;
+}
+
+static int mtk_sha_cra_init_alg(struct crypto_tfm *tfm,
+				const char *alg_base)
+{
+	struct mtk_sha_ctx *tctx = crypto_tfm_ctx(tfm);
+	struct mtk_cryp *cryp = NULL;
+
+	cryp = mtk_sha_find_dev(tctx);
+	if (!cryp)
+		return -ENODEV;
+
+	crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
+				 sizeof(struct mtk_sha_reqctx));
+
+	if (alg_base) {
+		struct mtk_sha_hmac_ctx *bctx = tctx->base;
+
+		tctx->flags |= SHA_FLAGS_HMAC;
+		bctx->shash = crypto_alloc_shash(alg_base, 0,
+					CRYPTO_ALG_NEED_FALLBACK);
+		if (IS_ERR(bctx->shash)) {
+			pr_err("base driver %s could not be loaded.\n",
+			       alg_base);
+
+			return PTR_ERR(bctx->shash);
+		}
+	}
+	return 0;
+}
+
+static int mtk_sha_cra_init(struct crypto_tfm *tfm)
+{
+	return mtk_sha_cra_init_alg(tfm, NULL);
+}
+
+static int mtk_sha_cra_sha1_init(struct crypto_tfm *tfm)
+{
+	return mtk_sha_cra_init_alg(tfm, "sha1");
+}
+
+static int mtk_sha_cra_sha224_init(struct crypto_tfm *tfm)
+{
+	return mtk_sha_cra_init_alg(tfm, "sha224");
+}
+
+static int mtk_sha_cra_sha256_init(struct crypto_tfm *tfm)
+{
+	return mtk_sha_cra_init_alg(tfm, "sha256");
+}
+
+static int mtk_sha_cra_sha384_init(struct crypto_tfm *tfm)
+{
+	return mtk_sha_cra_init_alg(tfm, "sha384");
+}
+
+static int mtk_sha_cra_sha512_init(struct crypto_tfm *tfm)
+{
+	return mtk_sha_cra_init_alg(tfm, "sha512");
+}
+
+static void mtk_sha_cra_exit(struct crypto_tfm *tfm)
+{
+	struct mtk_sha_ctx *tctx = crypto_tfm_ctx(tfm);
+
+	if (tctx->flags & SHA_FLAGS_HMAC) {
+		struct mtk_sha_hmac_ctx *bctx = tctx->base;
+
+		crypto_free_shash(bctx->shash);
+	}
+}
+
+static struct ahash_alg algs_sha1_sha224_sha256[] = {
+{
+	.init		= mtk_sha_init,
+	.update		= mtk_sha_update,
+	.final		= mtk_sha_final,
+	.finup		= mtk_sha_finup,
+	.digest		= mtk_sha_digest,
+	.export		= mtk_sha_export,
+	.import		= mtk_sha_import,
+	.halg.digestsize	= SHA1_DIGEST_SIZE,
+	.halg.statesize = sizeof(struct mtk_sha_reqctx),
+	.halg.base	= {
+		.cra_name		= "sha1",
+		.cra_driver_name	= "mtk-sha1",
+		.cra_priority		= 400,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= SHA1_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct mtk_sha_ctx),
+		.cra_alignmask		= SHA_ALIGN_MSK,
+		.cra_module		= THIS_MODULE,
+		.cra_init		= mtk_sha_cra_init,
+		.cra_exit		= mtk_sha_cra_exit,
+	}
+},
+{
+	.init		= mtk_sha_init,
+	.update		= mtk_sha_update,
+	.final		= mtk_sha_final,
+	.finup		= mtk_sha_finup,
+	.digest		= mtk_sha_digest,
+	.export		= mtk_sha_export,
+	.import		= mtk_sha_import,
+	.halg.digestsize	= SHA224_DIGEST_SIZE,
+	.halg.statesize = sizeof(struct mtk_sha_reqctx),
+	.halg.base	= {
+		.cra_name		= "sha224",
+		.cra_driver_name	= "mtk-sha224",
+		.cra_priority		= 400,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= SHA224_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct mtk_sha_ctx),
+		.cra_alignmask		= SHA_ALIGN_MSK,
+		.cra_module		= THIS_MODULE,
+		.cra_init		= mtk_sha_cra_init,
+		.cra_exit		= mtk_sha_cra_exit,
+	}
+},
+{
+	.init		= mtk_sha_init,
+	.update		= mtk_sha_update,
+	.final		= mtk_sha_final,
+	.finup		= mtk_sha_finup,
+	.digest		= mtk_sha_digest,
+	.export		= mtk_sha_export,
+	.import		= mtk_sha_import,
+	.halg.digestsize	= SHA256_DIGEST_SIZE,
+	.halg.statesize = sizeof(struct mtk_sha_reqctx),
+	.halg.base	= {
+		.cra_name		= "sha256",
+		.cra_driver_name	= "mtk-sha256",
+		.cra_priority		= 400,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= SHA256_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct mtk_sha_ctx),
+		.cra_alignmask		= SHA_ALIGN_MSK,
+		.cra_module		= THIS_MODULE,
+		.cra_init		= mtk_sha_cra_init,
+		.cra_exit		= mtk_sha_cra_exit,
+	}
+},
+{
+	.init		= mtk_sha_init,
+	.update		= mtk_sha_update,
+	.final		= mtk_sha_final,
+	.finup		= mtk_sha_finup,
+	.digest		= mtk_sha_digest,
+	.export		= mtk_sha_export,
+	.import		= mtk_sha_import,
+	.setkey		= mtk_sha_setkey,
+	.halg.digestsize	= SHA1_DIGEST_SIZE,
+	.halg.statesize = sizeof(struct mtk_sha_reqctx),
+	.halg.base	= {
+		.cra_name		= "hmac(sha1)",
+		.cra_driver_name	= "mtk-hmac-sha1",
+		.cra_priority		= 400,
+		.cra_flags		= CRYPTO_ALG_ASYNC |
+					  CRYPTO_ALG_NEED_FALLBACK,
+		.cra_blocksize		= SHA1_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct mtk_sha_ctx) +
+					sizeof(struct mtk_sha_hmac_ctx),
+		.cra_alignmask		= SHA_ALIGN_MSK,
+		.cra_module		= THIS_MODULE,
+		.cra_init		= mtk_sha_cra_sha1_init,
+		.cra_exit		= mtk_sha_cra_exit,
+	}
+},
+{
+	.init		= mtk_sha_init,
+	.update		= mtk_sha_update,
+	.final		= mtk_sha_final,
+	.finup		= mtk_sha_finup,
+	.digest		= mtk_sha_digest,
+	.export		= mtk_sha_export,
+	.import		= mtk_sha_import,
+	.setkey		= mtk_sha_setkey,
+	.halg.digestsize	= SHA224_DIGEST_SIZE,
+	.halg.statesize = sizeof(struct mtk_sha_reqctx),
+	.halg.base	= {
+		.cra_name		= "hmac(sha224)",
+		.cra_driver_name	= "mtk-hmac-sha224",
+		.cra_priority		= 400,
+		.cra_flags		= CRYPTO_ALG_ASYNC |
+					  CRYPTO_ALG_NEED_FALLBACK,
+		.cra_blocksize		= SHA224_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct mtk_sha_ctx) +
+					sizeof(struct mtk_sha_hmac_ctx),
+		.cra_alignmask		= SHA_ALIGN_MSK,
+		.cra_module		= THIS_MODULE,
+		.cra_init		= mtk_sha_cra_sha224_init,
+		.cra_exit		= mtk_sha_cra_exit,
+	}
+},
+{
+	.init		= mtk_sha_init,
+	.update		= mtk_sha_update,
+	.final		= mtk_sha_final,
+	.finup		= mtk_sha_finup,
+	.digest		= mtk_sha_digest,
+	.export		= mtk_sha_export,
+	.import		= mtk_sha_import,
+	.setkey		= mtk_sha_setkey,
+	.halg.digestsize	= SHA256_DIGEST_SIZE,
+	.halg.statesize = sizeof(struct mtk_sha_reqctx),
+	.halg.base	= {
+		.cra_name		= "hmac(sha256)",
+		.cra_driver_name	= "mtk-hmac-sha256",
+		.cra_priority		= 400,
+		.cra_flags		= CRYPTO_ALG_ASYNC |
+					  CRYPTO_ALG_NEED_FALLBACK,
+		.cra_blocksize		= SHA256_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct mtk_sha_ctx) +
+					sizeof(struct mtk_sha_hmac_ctx),
+		.cra_alignmask		= SHA_ALIGN_MSK,
+		.cra_module		= THIS_MODULE,
+		.cra_init		= mtk_sha_cra_sha256_init,
+		.cra_exit		= mtk_sha_cra_exit,
+	}
+},
+};
+
+static struct ahash_alg algs_sha384_sha512[] = {
+{
+	.init		= mtk_sha_init,
+	.update		= mtk_sha_update,
+	.final		= mtk_sha_final,
+	.finup		= mtk_sha_finup,
+	.digest		= mtk_sha_digest,
+	.export		= mtk_sha_export,
+	.import		= mtk_sha_import,
+	.halg.digestsize	= SHA384_DIGEST_SIZE,
+	.halg.statesize = sizeof(struct mtk_sha_reqctx),
+	.halg.base	= {
+		.cra_name		= "sha384",
+		.cra_driver_name	= "mtk-sha384",
+		.cra_priority		= 400,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= SHA384_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct mtk_sha_ctx),
+		.cra_alignmask		= SHA_ALIGN_MSK,
+		.cra_module		= THIS_MODULE,
+		.cra_init		= mtk_sha_cra_init,
+		.cra_exit		= mtk_sha_cra_exit,
+	}
+},
+{
+	.init		= mtk_sha_init,
+	.update		= mtk_sha_update,
+	.final		= mtk_sha_final,
+	.finup		= mtk_sha_finup,
+	.digest		= mtk_sha_digest,
+	.export		= mtk_sha_export,
+	.import		= mtk_sha_import,
+	.halg.digestsize	= SHA512_DIGEST_SIZE,
+	.halg.statesize = sizeof(struct mtk_sha_reqctx),
+	.halg.base	= {
+		.cra_name		= "sha512",
+		.cra_driver_name	= "mtk-sha512",
+		.cra_priority		= 400,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= SHA512_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct mtk_sha_ctx),
+		.cra_alignmask		= SHA_ALIGN_MSK,
+		.cra_module		= THIS_MODULE,
+		.cra_init		= mtk_sha_cra_init,
+		.cra_exit		= mtk_sha_cra_exit,
+	}
+},
+{
+	.init		= mtk_sha_init,
+	.update		= mtk_sha_update,
+	.final		= mtk_sha_final,
+	.finup		= mtk_sha_finup,
+	.digest		= mtk_sha_digest,
+	.export		= mtk_sha_export,
+	.import		= mtk_sha_import,
+	.setkey		= mtk_sha_setkey,
+	.halg.digestsize	= SHA384_DIGEST_SIZE,
+	.halg.statesize = sizeof(struct mtk_sha_reqctx),
+	.halg.base	= {
+		.cra_name		= "hmac(sha384)",
+		.cra_driver_name	= "mtk-hmac-sha384",
+		.cra_priority		= 400,
+		.cra_flags		= CRYPTO_ALG_ASYNC |
+					  CRYPTO_ALG_NEED_FALLBACK,
+		.cra_blocksize		= SHA384_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct mtk_sha_ctx) +
+					sizeof(struct mtk_sha_hmac_ctx),
+		.cra_alignmask		= SHA_ALIGN_MSK,
+		.cra_module		= THIS_MODULE,
+		.cra_init		= mtk_sha_cra_sha384_init,
+		.cra_exit		= mtk_sha_cra_exit,
+	}
+},
+{
+	.init		= mtk_sha_init,
+	.update		= mtk_sha_update,
+	.final		= mtk_sha_final,
+	.finup		= mtk_sha_finup,
+	.digest		= mtk_sha_digest,
+	.export		= mtk_sha_export,
+	.import		= mtk_sha_import,
+	.setkey		= mtk_sha_setkey,
+	.halg.digestsize	= SHA512_DIGEST_SIZE,
+	.halg.statesize = sizeof(struct mtk_sha_reqctx),
+	.halg.base	= {
+		.cra_name		= "hmac(sha512)",
+		.cra_driver_name	= "mtk-hmac-sha512",
+		.cra_priority		= 400,
+		.cra_flags		= CRYPTO_ALG_ASYNC |
+					  CRYPTO_ALG_NEED_FALLBACK,
+		.cra_blocksize		= SHA512_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct mtk_sha_ctx) +
+					sizeof(struct mtk_sha_hmac_ctx),
+		.cra_alignmask		= SHA_ALIGN_MSK,
+		.cra_module		= THIS_MODULE,
+		.cra_init		= mtk_sha_cra_sha512_init,
+		.cra_exit		= mtk_sha_cra_exit,
+	}
+},
+};
+
+static void mtk_sha_queue_task(unsigned long data)
+{
+	struct mtk_sha_rec *sha = (struct mtk_sha_rec *)data;
+
+	mtk_sha_handle_queue(sha->cryp, sha->id - MTK_RING2, NULL);
+}
+
+static void mtk_sha_done_task(unsigned long data)
+{
+	struct mtk_sha_rec *sha = (struct mtk_sha_rec *)data;
+	struct mtk_cryp *cryp = sha->cryp;
+
+	mtk_sha_unmap(cryp, sha);
+	mtk_sha_complete(cryp, sha);
+}
+
+static irqreturn_t mtk_sha_irq(int irq, void *dev_id)
+{
+	struct mtk_sha_rec *sha = (struct mtk_sha_rec *)dev_id;
+	struct mtk_cryp *cryp = sha->cryp;
+	u32 val = mtk_sha_read(cryp, RDR_STAT(sha->id));
+
+	mtk_sha_write(cryp, RDR_STAT(sha->id), val);
+
+	if (likely((SHA_FLAGS_BUSY & sha->flags))) {
+		mtk_sha_write(cryp, RDR_PROC_COUNT(sha->id), MTK_CNT_RST);
+		mtk_sha_write(cryp, RDR_THRESH(sha->id),
+			      MTK_RDR_PROC_THRESH | MTK_RDR_PROC_MODE);
+
+		tasklet_schedule(&sha->done_task);
+	} else {
+		dev_warn(cryp->dev, "SHA interrupt when no active requests.\n");
+	}
+	return IRQ_HANDLED;
+}
+
+/*
+ * The purpose of two SHA records is used to get extra performance.
+ * It is similar to mtk_aes_record_init().
+ */
+static int mtk_sha_record_init(struct mtk_cryp *cryp)
+{
+	struct mtk_sha_rec **sha = cryp->sha;
+	int i, err = -ENOMEM;
+
+	for (i = 0; i < MTK_REC_NUM; i++) {
+		sha[i] = kzalloc(sizeof(**sha), GFP_KERNEL);
+		if (!sha[i])
+			goto err_cleanup;
+
+		sha[i]->cryp = cryp;
+
+		spin_lock_init(&sha[i]->lock);
+		crypto_init_queue(&sha[i]->queue, SHA_QUEUE_SIZE);
+
+		tasklet_init(&sha[i]->queue_task, mtk_sha_queue_task,
+			     (unsigned long)sha[i]);
+		tasklet_init(&sha[i]->done_task, mtk_sha_done_task,
+			     (unsigned long)sha[i]);
+	}
+
+	/* Link to ring2 and ring3 respectively */
+	sha[0]->id = MTK_RING2;
+	sha[1]->id = MTK_RING3;
+
+	cryp->rec = 1;
+
+	return 0;
+
+err_cleanup:
+	for (; i--; )
+		kfree(sha[i]);
+	return err;
+}
+
+static void mtk_sha_record_free(struct mtk_cryp *cryp)
+{
+	int i;
+
+	for (i = 0; i < MTK_REC_NUM; i++) {
+		tasklet_kill(&cryp->sha[i]->done_task);
+		tasklet_kill(&cryp->sha[i]->queue_task);
+
+		kfree(cryp->sha[i]);
+	}
+}
+
+static void mtk_sha_unregister_algs(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(algs_sha1_sha224_sha256); i++)
+		crypto_unregister_ahash(&algs_sha1_sha224_sha256[i]);
+
+	for (i = 0; i < ARRAY_SIZE(algs_sha384_sha512); i++)
+		crypto_unregister_ahash(&algs_sha384_sha512[i]);
+}
+
+static int mtk_sha_register_algs(void)
+{
+	int err, i;
+
+	for (i = 0; i < ARRAY_SIZE(algs_sha1_sha224_sha256); i++) {
+		err = crypto_register_ahash(&algs_sha1_sha224_sha256[i]);
+		if (err)
+			goto err_sha_224_256_algs;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(algs_sha384_sha512); i++) {
+		err = crypto_register_ahash(&algs_sha384_sha512[i]);
+		if (err)
+			goto err_sha_384_512_algs;
+	}
+
+	return 0;
+
+err_sha_384_512_algs:
+	for (; i--; )
+		crypto_unregister_ahash(&algs_sha384_sha512[i]);
+	i = ARRAY_SIZE(algs_sha1_sha224_sha256);
+err_sha_224_256_algs:
+	for (; i--; )
+		crypto_unregister_ahash(&algs_sha1_sha224_sha256[i]);
+
+	return err;
+}
+
+int mtk_hash_alg_register(struct mtk_cryp *cryp)
+{
+	int err;
+
+	INIT_LIST_HEAD(&cryp->sha_list);
+
+	/* Initialize two hash records */
+	err = mtk_sha_record_init(cryp);
+	if (err)
+		goto err_record;
+
+	err = devm_request_irq(cryp->dev, cryp->irq[MTK_RING2], mtk_sha_irq,
+			       0, "mtk-sha", cryp->sha[0]);
+	if (err) {
+		dev_err(cryp->dev, "unable to request sha irq0.\n");
+		goto err_res;
+	}
+
+	err = devm_request_irq(cryp->dev, cryp->irq[MTK_RING3], mtk_sha_irq,
+			       0, "mtk-sha", cryp->sha[1]);
+	if (err) {
+		dev_err(cryp->dev, "unable to request sha irq1.\n");
+		goto err_res;
+	}
+
+	/* Enable ring2 and ring3 interrupt for hash */
+	mtk_sha_write(cryp, AIC_ENABLE_SET(MTK_RING2), MTK_IRQ_RDR2);
+	mtk_sha_write(cryp, AIC_ENABLE_SET(MTK_RING3), MTK_IRQ_RDR3);
+
+	spin_lock(&mtk_sha.lock);
+	list_add_tail(&cryp->sha_list, &mtk_sha.dev_list);
+	spin_unlock(&mtk_sha.lock);
+
+	err = mtk_sha_register_algs();
+	if (err)
+		goto err_algs;
+
+	return 0;
+
+err_algs:
+	spin_lock(&mtk_sha.lock);
+	list_del(&cryp->sha_list);
+	spin_unlock(&mtk_sha.lock);
+err_res:
+	mtk_sha_record_free(cryp);
+err_record:
+
+	dev_err(cryp->dev, "mtk-sha initialization failed.\n");
+	return err;
+}
+
+void mtk_hash_alg_release(struct mtk_cryp *cryp)
+{
+	spin_lock(&mtk_sha.lock);
+	list_del(&cryp->sha_list);
+	spin_unlock(&mtk_sha.lock);
+
+	mtk_sha_unregister_algs();
+	mtk_sha_record_free(cryp);
+}