1 files changed, 1024 insertions, 0 deletions

diff --git a/drivers/crypto/starfive/jh7110-aes.c b/drivers/crypto/starfive/jh7110-aes.c
new file mode 100644
index 000000000000..9378e6682f0e
--- /dev/null
+++ b/drivers/crypto/starfive/jh7110-aes.c
@@ -0,0 +1,1024 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * StarFive AES acceleration driver
+ *
+ * Copyright (c) 2022 StarFive Technology
+ */
+
+#include <crypto/engine.h>
+#include <crypto/gcm.h>
+#include <crypto/internal/aead.h>
+#include <crypto/internal/skcipher.h>
+#include <crypto/scatterwalk.h>
+#include "jh7110-cryp.h"
+#include <linux/err.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+
+#define STARFIVE_AES_REGS_OFFSET	0x100
+#define STARFIVE_AES_AESDIO0R		(STARFIVE_AES_REGS_OFFSET + 0x0)
+#define STARFIVE_AES_KEY0		(STARFIVE_AES_REGS_OFFSET + 0x4)
+#define STARFIVE_AES_KEY1		(STARFIVE_AES_REGS_OFFSET + 0x8)
+#define STARFIVE_AES_KEY2		(STARFIVE_AES_REGS_OFFSET + 0xC)
+#define STARFIVE_AES_KEY3		(STARFIVE_AES_REGS_OFFSET + 0x10)
+#define STARFIVE_AES_KEY4		(STARFIVE_AES_REGS_OFFSET + 0x14)
+#define STARFIVE_AES_KEY5		(STARFIVE_AES_REGS_OFFSET + 0x18)
+#define STARFIVE_AES_KEY6		(STARFIVE_AES_REGS_OFFSET + 0x1C)
+#define STARFIVE_AES_KEY7		(STARFIVE_AES_REGS_OFFSET + 0x20)
+#define STARFIVE_AES_CSR		(STARFIVE_AES_REGS_OFFSET + 0x24)
+#define STARFIVE_AES_IV0		(STARFIVE_AES_REGS_OFFSET + 0x28)
+#define STARFIVE_AES_IV1		(STARFIVE_AES_REGS_OFFSET + 0x2C)
+#define STARFIVE_AES_IV2		(STARFIVE_AES_REGS_OFFSET + 0x30)
+#define STARFIVE_AES_IV3		(STARFIVE_AES_REGS_OFFSET + 0x34)
+#define STARFIVE_AES_NONCE0		(STARFIVE_AES_REGS_OFFSET + 0x3C)
+#define STARFIVE_AES_NONCE1		(STARFIVE_AES_REGS_OFFSET + 0x40)
+#define STARFIVE_AES_NONCE2		(STARFIVE_AES_REGS_OFFSET + 0x44)
+#define STARFIVE_AES_NONCE3		(STARFIVE_AES_REGS_OFFSET + 0x48)
+#define STARFIVE_AES_ALEN0		(STARFIVE_AES_REGS_OFFSET + 0x4C)
+#define STARFIVE_AES_ALEN1		(STARFIVE_AES_REGS_OFFSET + 0x50)
+#define STARFIVE_AES_MLEN0		(STARFIVE_AES_REGS_OFFSET + 0x54)
+#define STARFIVE_AES_MLEN1		(STARFIVE_AES_REGS_OFFSET + 0x58)
+#define STARFIVE_AES_IVLEN		(STARFIVE_AES_REGS_OFFSET + 0x5C)
+
+#define FLG_MODE_MASK			GENMASK(2, 0)
+#define FLG_ENCRYPT			BIT(4)
+
+/* Misc */
+#define CCM_B0_ADATA			0x40
+#define AES_BLOCK_32			(AES_BLOCK_SIZE / sizeof(u32))
+
+static inline int starfive_aes_wait_busy(struct starfive_cryp_dev *cryp)
+{
+	u32 status;
+
+	return readl_relaxed_poll_timeout(cryp->base + STARFIVE_AES_CSR, status,
+					  !(status & STARFIVE_AES_BUSY), 10, 100000);
+}
+
+static inline int starfive_aes_wait_keydone(struct starfive_cryp_dev *cryp)
+{
+	u32 status;
+
+	return readl_relaxed_poll_timeout(cryp->base + STARFIVE_AES_CSR, status,
+					  (status & STARFIVE_AES_KEY_DONE), 10, 100000);
+}
+
+static inline int starfive_aes_wait_gcmdone(struct starfive_cryp_dev *cryp)
+{
+	u32 status;
+
+	return readl_relaxed_poll_timeout(cryp->base + STARFIVE_AES_CSR, status,
+					  (status & STARFIVE_AES_GCM_DONE), 10, 100000);
+}
+
+static inline int is_gcm(struct starfive_cryp_dev *cryp)
+{
+	return (cryp->flags & FLG_MODE_MASK) == STARFIVE_AES_MODE_GCM;
+}
+
+static inline int is_encrypt(struct starfive_cryp_dev *cryp)
+{
+	return cryp->flags & FLG_ENCRYPT;
+}
+
+static void starfive_aes_aead_hw_start(struct starfive_cryp_ctx *ctx, u32 hw_mode)
+{
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+	unsigned int value;
+
+	switch (hw_mode) {
+	case STARFIVE_AES_MODE_GCM:
+		value = readl(ctx->cryp->base + STARFIVE_AES_CSR);
+		value |= STARFIVE_AES_GCM_START;
+		writel(value, cryp->base + STARFIVE_AES_CSR);
+		starfive_aes_wait_gcmdone(cryp);
+		break;
+	case STARFIVE_AES_MODE_CCM:
+		value = readl(ctx->cryp->base + STARFIVE_AES_CSR);
+		value |= STARFIVE_AES_CCM_START;
+		writel(value, cryp->base + STARFIVE_AES_CSR);
+		break;
+	}
+}
+
+static inline void starfive_aes_set_ivlen(struct starfive_cryp_ctx *ctx)
+{
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+
+	if (is_gcm(cryp))
+		writel(GCM_AES_IV_SIZE, cryp->base + STARFIVE_AES_IVLEN);
+	else
+		writel(AES_BLOCK_SIZE, cryp->base + STARFIVE_AES_IVLEN);
+}
+
+static inline void starfive_aes_set_alen(struct starfive_cryp_ctx *ctx)
+{
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+
+	writel(upper_32_bits(cryp->assoclen), cryp->base + STARFIVE_AES_ALEN0);
+	writel(lower_32_bits(cryp->assoclen), cryp->base + STARFIVE_AES_ALEN1);
+}
+
+static inline void starfive_aes_set_mlen(struct starfive_cryp_ctx *ctx)
+{
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+
+	writel(upper_32_bits(cryp->total_in), cryp->base + STARFIVE_AES_MLEN0);
+	writel(lower_32_bits(cryp->total_in), cryp->base + STARFIVE_AES_MLEN1);
+}
+
+static inline int starfive_aes_ccm_check_iv(const u8 *iv)
+{
+	/* 2 <= L <= 8, so 1 <= L' <= 7. */
+	if (iv[0] < 1 || iv[0] > 7)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int starfive_aes_write_iv(struct starfive_cryp_ctx *ctx, u32 *iv)
+{
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+
+	writel(iv[0], cryp->base + STARFIVE_AES_IV0);
+	writel(iv[1], cryp->base + STARFIVE_AES_IV1);
+	writel(iv[2], cryp->base + STARFIVE_AES_IV2);
+
+	if (is_gcm(cryp)) {
+		if (starfive_aes_wait_gcmdone(cryp))
+			return -ETIMEDOUT;
+
+		return 0;
+	}
+
+	writel(iv[3], cryp->base + STARFIVE_AES_IV3);
+
+	return 0;
+}
+
+static inline void starfive_aes_get_iv(struct starfive_cryp_dev *cryp, u32 *iv)
+{
+	iv[0] = readl(cryp->base + STARFIVE_AES_IV0);
+	iv[1] = readl(cryp->base + STARFIVE_AES_IV1);
+	iv[2] = readl(cryp->base + STARFIVE_AES_IV2);
+	iv[3] = readl(cryp->base + STARFIVE_AES_IV3);
+}
+
+static inline void starfive_aes_write_nonce(struct starfive_cryp_ctx *ctx, u32 *nonce)
+{
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+
+	writel(nonce[0], cryp->base + STARFIVE_AES_NONCE0);
+	writel(nonce[1], cryp->base + STARFIVE_AES_NONCE1);
+	writel(nonce[2], cryp->base + STARFIVE_AES_NONCE2);
+	writel(nonce[3], cryp->base + STARFIVE_AES_NONCE3);
+}
+
+static int starfive_aes_write_key(struct starfive_cryp_ctx *ctx)
+{
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+	u32 *key = (u32 *)ctx->key;
+
+	if (ctx->keylen >= AES_KEYSIZE_128) {
+		writel(key[0], cryp->base + STARFIVE_AES_KEY0);
+		writel(key[1], cryp->base + STARFIVE_AES_KEY1);
+		writel(key[2], cryp->base + STARFIVE_AES_KEY2);
+		writel(key[3], cryp->base + STARFIVE_AES_KEY3);
+	}
+
+	if (ctx->keylen >= AES_KEYSIZE_192) {
+		writel(key[4], cryp->base + STARFIVE_AES_KEY4);
+		writel(key[5], cryp->base + STARFIVE_AES_KEY5);
+	}
+
+	if (ctx->keylen >= AES_KEYSIZE_256) {
+		writel(key[6], cryp->base + STARFIVE_AES_KEY6);
+		writel(key[7], cryp->base + STARFIVE_AES_KEY7);
+	}
+
+	if (starfive_aes_wait_keydone(cryp))
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+static int starfive_aes_ccm_init(struct starfive_cryp_ctx *ctx)
+{
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+	u8 iv[AES_BLOCK_SIZE], b0[AES_BLOCK_SIZE];
+	unsigned int textlen;
+
+	memcpy(iv, cryp->req.areq->iv, AES_BLOCK_SIZE);
+	memset(iv + AES_BLOCK_SIZE - 1 - iv[0], 0, iv[0] + 1);
+
+	/* Build B0 */
+	memcpy(b0, iv, AES_BLOCK_SIZE);
+
+	b0[0] |= (8 * ((cryp->authsize - 2) / 2));
+
+	if (cryp->assoclen)
+		b0[0] |= CCM_B0_ADATA;
+
+	textlen = cryp->total_in;
+
+	b0[AES_BLOCK_SIZE - 2] = textlen >> 8;
+	b0[AES_BLOCK_SIZE - 1] = textlen & 0xFF;
+
+	starfive_aes_write_nonce(ctx, (u32 *)b0);
+
+	return 0;
+}
+
+static int starfive_aes_hw_init(struct starfive_cryp_ctx *ctx)
+{
+	struct starfive_cryp_request_ctx *rctx = ctx->rctx;
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+	u32 hw_mode;
+
+	/* reset */
+	rctx->csr.aes.v = 0;
+	rctx->csr.aes.aesrst = 1;
+	writel(rctx->csr.aes.v, cryp->base + STARFIVE_AES_CSR);
+
+	/* csr setup */
+	hw_mode = cryp->flags & FLG_MODE_MASK;
+
+	rctx->csr.aes.v = 0;
+
+	switch (ctx->keylen) {
+	case AES_KEYSIZE_128:
+		rctx->csr.aes.keymode = STARFIVE_AES_KEYMODE_128;
+		break;
+	case AES_KEYSIZE_192:
+		rctx->csr.aes.keymode = STARFIVE_AES_KEYMODE_192;
+		break;
+	case AES_KEYSIZE_256:
+		rctx->csr.aes.keymode = STARFIVE_AES_KEYMODE_256;
+		break;
+	}
+
+	rctx->csr.aes.mode  = hw_mode;
+	rctx->csr.aes.cmode = !is_encrypt(cryp);
+	rctx->csr.aes.ie = 1;
+
+	if (hw_mode == STARFIVE_AES_MODE_CFB ||
+	    hw_mode == STARFIVE_AES_MODE_OFB)
+		rctx->csr.aes.stmode = STARFIVE_AES_MODE_XFB_128;
+	else
+		rctx->csr.aes.stmode = STARFIVE_AES_MODE_XFB_1;
+
+	if (cryp->side_chan) {
+		rctx->csr.aes.delay_aes = 1;
+		rctx->csr.aes.vaes_start = 1;
+	}
+
+	writel(rctx->csr.aes.v, cryp->base + STARFIVE_AES_CSR);
+
+	cryp->err = starfive_aes_write_key(ctx);
+	if (cryp->err)
+		return cryp->err;
+
+	switch (hw_mode) {
+	case STARFIVE_AES_MODE_GCM:
+		starfive_aes_set_alen(ctx);
+		starfive_aes_set_mlen(ctx);
+		starfive_aes_set_ivlen(ctx);
+		starfive_aes_aead_hw_start(ctx, hw_mode);
+		starfive_aes_write_iv(ctx, (void *)cryp->req.areq->iv);
+		break;
+	case STARFIVE_AES_MODE_CCM:
+		starfive_aes_set_alen(ctx);
+		starfive_aes_set_mlen(ctx);
+		starfive_aes_ccm_init(ctx);
+		starfive_aes_aead_hw_start(ctx, hw_mode);
+		break;
+	case STARFIVE_AES_MODE_OFB:
+	case STARFIVE_AES_MODE_CFB:
+	case STARFIVE_AES_MODE_CBC:
+	case STARFIVE_AES_MODE_CTR:
+		starfive_aes_write_iv(ctx, (void *)cryp->req.sreq->iv);
+		break;
+	default:
+		break;
+	}
+
+	return cryp->err;
+}
+
+static int starfive_aes_read_authtag(struct starfive_cryp_dev *cryp)
+{
+	int i, start_addr;
+
+	if (starfive_aes_wait_busy(cryp))
+		return dev_err_probe(cryp->dev, -ETIMEDOUT,
+				     "Timeout waiting for tag generation.");
+
+	start_addr = STARFIVE_AES_NONCE0;
+
+	if (is_gcm(cryp))
+		for (i = 0; i < AES_BLOCK_32; i++, start_addr += 4)
+			cryp->tag_out[i] = readl(cryp->base + start_addr);
+	else
+		for (i = 0; i < AES_BLOCK_32; i++)
+			cryp->tag_out[i] = readl(cryp->base + STARFIVE_AES_AESDIO0R);
+
+	if (is_encrypt(cryp)) {
+		scatterwalk_copychunks(cryp->tag_out, &cryp->out_walk, cryp->authsize, 1);
+	} else {
+		scatterwalk_copychunks(cryp->tag_in, &cryp->in_walk, cryp->authsize, 0);
+
+		if (crypto_memneq(cryp->tag_in, cryp->tag_out, cryp->authsize))
+			return dev_err_probe(cryp->dev, -EBADMSG, "Failed tag verification\n");
+	}
+
+	return 0;
+}
+
+static void starfive_aes_finish_req(struct starfive_cryp_dev *cryp)
+{
+	union starfive_aes_csr csr;
+	int err = cryp->err;
+
+	if (!err && cryp->authsize)
+		err = starfive_aes_read_authtag(cryp);
+
+	if (!err && ((cryp->flags & FLG_MODE_MASK) == STARFIVE_AES_MODE_CBC ||
+		     (cryp->flags & FLG_MODE_MASK) == STARFIVE_AES_MODE_CTR))
+		starfive_aes_get_iv(cryp, (void *)cryp->req.sreq->iv);
+
+	/* reset irq flags*/
+	csr.v = 0;
+	csr.aesrst = 1;
+	writel(csr.v, cryp->base + STARFIVE_AES_CSR);
+
+	if (cryp->authsize)
+		crypto_finalize_aead_request(cryp->engine, cryp->req.areq, err);
+	else
+		crypto_finalize_skcipher_request(cryp->engine, cryp->req.sreq,
+						 err);
+}
+
+void starfive_aes_done_task(unsigned long param)
+{
+	struct starfive_cryp_dev *cryp = (struct starfive_cryp_dev *)param;
+	u32 block[AES_BLOCK_32];
+	u32 stat;
+	int i;
+
+	for (i = 0; i < AES_BLOCK_32; i++)
+		block[i] = readl(cryp->base + STARFIVE_AES_AESDIO0R);
+
+	scatterwalk_copychunks(block, &cryp->out_walk, min_t(size_t, AES_BLOCK_SIZE,
+							     cryp->total_out), 1);
+
+	cryp->total_out -= min_t(size_t, AES_BLOCK_SIZE, cryp->total_out);
+
+	if (!cryp->total_out) {
+		starfive_aes_finish_req(cryp);
+		return;
+	}
+
+	memset(block, 0, AES_BLOCK_SIZE);
+	scatterwalk_copychunks(block, &cryp->in_walk, min_t(size_t, AES_BLOCK_SIZE,
+							    cryp->total_in), 0);
+	cryp->total_in -= min_t(size_t, AES_BLOCK_SIZE, cryp->total_in);
+
+	for (i = 0; i < AES_BLOCK_32; i++)
+		writel(block[i], cryp->base + STARFIVE_AES_AESDIO0R);
+
+	stat = readl(cryp->base + STARFIVE_IE_MASK_OFFSET);
+	stat &= ~STARFIVE_IE_MASK_AES_DONE;
+	writel(stat, cryp->base + STARFIVE_IE_MASK_OFFSET);
+}
+
+static int starfive_aes_gcm_write_adata(struct starfive_cryp_ctx *ctx)
+{
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+	struct starfive_cryp_request_ctx *rctx = ctx->rctx;
+	u32 *buffer;
+	int total_len, loop;
+
+	total_len = ALIGN(cryp->assoclen, AES_BLOCK_SIZE) / sizeof(unsigned int);
+	buffer = (u32 *)rctx->adata;
+
+	for (loop = 0; loop < total_len; loop += 4) {
+		writel(*buffer, cryp->base + STARFIVE_AES_NONCE0);
+		buffer++;
+		writel(*buffer, cryp->base + STARFIVE_AES_NONCE1);
+		buffer++;
+		writel(*buffer, cryp->base + STARFIVE_AES_NONCE2);
+		buffer++;
+		writel(*buffer, cryp->base + STARFIVE_AES_NONCE3);
+		buffer++;
+	}
+
+	if (starfive_aes_wait_gcmdone(cryp))
+		return dev_err_probe(cryp->dev, -ETIMEDOUT,
+				     "Timeout processing gcm aad block");
+
+	return 0;
+}
+
+static int starfive_aes_ccm_write_adata(struct starfive_cryp_ctx *ctx)
+{
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+	struct starfive_cryp_request_ctx *rctx = ctx->rctx;
+	u32 *buffer;
+	u8 *ci;
+	int total_len, loop;
+
+	total_len = cryp->assoclen;
+
+	ci = rctx->adata;
+	writeb(*ci, cryp->base + STARFIVE_AES_AESDIO0R);
+	ci++;
+	writeb(*ci, cryp->base + STARFIVE_AES_AESDIO0R);
+	ci++;
+	total_len -= 2;
+	buffer = (u32 *)ci;
+
+	for (loop = 0; loop < 3; loop++, buffer++)
+		writel(*buffer, cryp->base + STARFIVE_AES_AESDIO0R);
+
+	total_len -= 12;
+
+	while (total_len > 0) {
+		for (loop = 0; loop < AES_BLOCK_32; loop++, buffer++)
+			writel(*buffer, cryp->base + STARFIVE_AES_AESDIO0R);
+
+		total_len -= AES_BLOCK_SIZE;
+	}
+
+	if (starfive_aes_wait_busy(cryp))
+		return dev_err_probe(cryp->dev, -ETIMEDOUT,
+				     "Timeout processing ccm aad block");
+
+	return 0;
+}
+
+static int starfive_aes_prepare_req(struct skcipher_request *req,
+				    struct aead_request *areq)
+{
+	struct starfive_cryp_ctx *ctx;
+	struct starfive_cryp_request_ctx *rctx;
+	struct starfive_cryp_dev *cryp;
+
+	if (!req && !areq)
+		return -EINVAL;
+
+	ctx = req ? crypto_skcipher_ctx(crypto_skcipher_reqtfm(req)) :
+		    crypto_aead_ctx(crypto_aead_reqtfm(areq));
+
+	cryp = ctx->cryp;
+	rctx = req ? skcipher_request_ctx(req) : aead_request_ctx(areq);
+
+	if (req) {
+		cryp->req.sreq = req;
+		cryp->total_in = req->cryptlen;
+		cryp->total_out = req->cryptlen;
+		cryp->assoclen = 0;
+		cryp->authsize = 0;
+	} else {
+		cryp->req.areq = areq;
+		cryp->assoclen = areq->assoclen;
+		cryp->authsize = crypto_aead_authsize(crypto_aead_reqtfm(areq));
+		if (is_encrypt(cryp)) {
+			cryp->total_in = areq->cryptlen;
+			cryp->total_out = areq->cryptlen;
+		} else {
+			cryp->total_in = areq->cryptlen - cryp->authsize;
+			cryp->total_out = cryp->total_in;
+		}
+	}
+
+	rctx->in_sg = req ? req->src : areq->src;
+	scatterwalk_start(&cryp->in_walk, rctx->in_sg);
+
+	rctx->out_sg = req ? req->dst : areq->dst;
+	scatterwalk_start(&cryp->out_walk, rctx->out_sg);
+
+	if (cryp->assoclen) {
+		rctx->adata = kzalloc(ALIGN(cryp->assoclen, AES_BLOCK_SIZE), GFP_KERNEL);
+		if (!rctx->adata)
+			return dev_err_probe(cryp->dev, -ENOMEM,
+					     "Failed to alloc memory for adata");
+
+		scatterwalk_copychunks(rctx->adata, &cryp->in_walk, cryp->assoclen, 0);
+		scatterwalk_copychunks(NULL, &cryp->out_walk, cryp->assoclen, 2);
+	}
+
+	ctx->rctx = rctx;
+
+	return starfive_aes_hw_init(ctx);
+}
+
+static int starfive_aes_do_one_req(struct crypto_engine *engine, void *areq)
+{
+	struct skcipher_request *req =
+		container_of(areq, struct skcipher_request, base);
+	struct starfive_cryp_ctx *ctx =
+		crypto_skcipher_ctx(crypto_skcipher_reqtfm(req));
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+	u32 block[AES_BLOCK_32];
+	u32 stat;
+	int err;
+	int i;
+
+	err = starfive_aes_prepare_req(req, NULL);
+	if (err)
+		return err;
+
+	/*
+	 * Write first plain/ciphertext block to start the module
+	 * then let irq tasklet handle the rest of the data blocks.
+	 */
+	scatterwalk_copychunks(block, &cryp->in_walk, min_t(size_t, AES_BLOCK_SIZE,
+							    cryp->total_in), 0);
+	cryp->total_in -= min_t(size_t, AES_BLOCK_SIZE, cryp->total_in);
+
+	for (i = 0; i < AES_BLOCK_32; i++)
+		writel(block[i], cryp->base + STARFIVE_AES_AESDIO0R);
+
+	stat = readl(cryp->base + STARFIVE_IE_MASK_OFFSET);
+	stat &= ~STARFIVE_IE_MASK_AES_DONE;
+	writel(stat, cryp->base + STARFIVE_IE_MASK_OFFSET);
+
+	return 0;
+}
+
+static int starfive_aes_init_tfm(struct crypto_skcipher *tfm)
+{
+	struct starfive_cryp_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+	ctx->cryp = starfive_cryp_find_dev(ctx);
+	if (!ctx->cryp)
+		return -ENODEV;
+
+	crypto_skcipher_set_reqsize(tfm, sizeof(struct starfive_cryp_request_ctx) +
+				    sizeof(struct skcipher_request));
+
+	return 0;
+}
+
+static int starfive_aes_aead_do_one_req(struct crypto_engine *engine, void *areq)
+{
+	struct aead_request *req =
+		container_of(areq, struct aead_request, base);
+	struct starfive_cryp_ctx *ctx =
+		crypto_aead_ctx(crypto_aead_reqtfm(req));
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+	struct starfive_cryp_request_ctx *rctx = ctx->rctx;
+	u32 block[AES_BLOCK_32];
+	u32 stat;
+	int err;
+	int i;
+
+	err = starfive_aes_prepare_req(NULL, req);
+	if (err)
+		return err;
+
+	if (!cryp->assoclen)
+		goto write_text;
+
+	if ((cryp->flags & FLG_MODE_MASK) == STARFIVE_AES_MODE_CCM)
+		cryp->err = starfive_aes_ccm_write_adata(ctx);
+	else
+		cryp->err = starfive_aes_gcm_write_adata(ctx);
+
+	kfree(rctx->adata);
+
+	if (cryp->err)
+		return cryp->err;
+
+write_text:
+	if (!cryp->total_in)
+		goto finish_req;
+
+	/*
+	 * Write first plain/ciphertext block to start the module
+	 * then let irq tasklet handle the rest of the data blocks.
+	 */
+	scatterwalk_copychunks(block, &cryp->in_walk, min_t(size_t, AES_BLOCK_SIZE,
+							    cryp->total_in), 0);
+	cryp->total_in -= min_t(size_t, AES_BLOCK_SIZE, cryp->total_in);
+
+	for (i = 0; i < AES_BLOCK_32; i++)
+		writel(block[i], cryp->base + STARFIVE_AES_AESDIO0R);
+
+	stat = readl(cryp->base + STARFIVE_IE_MASK_OFFSET);
+	stat &= ~STARFIVE_IE_MASK_AES_DONE;
+	writel(stat, cryp->base + STARFIVE_IE_MASK_OFFSET);
+
+	return 0;
+
+finish_req:
+	starfive_aes_finish_req(cryp);
+	return 0;
+}
+
+static int starfive_aes_aead_init_tfm(struct crypto_aead *tfm)
+{
+	struct starfive_cryp_ctx *ctx = crypto_aead_ctx(tfm);
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+	struct crypto_tfm *aead = crypto_aead_tfm(tfm);
+	struct crypto_alg *alg = aead->__crt_alg;
+
+	ctx->cryp = starfive_cryp_find_dev(ctx);
+	if (!ctx->cryp)
+		return -ENODEV;
+
+	if (alg->cra_flags & CRYPTO_ALG_NEED_FALLBACK) {
+		ctx->aead_fbk = crypto_alloc_aead(alg->cra_name, 0,
+						  CRYPTO_ALG_NEED_FALLBACK);
+		if (IS_ERR(ctx->aead_fbk))
+			return dev_err_probe(cryp->dev, PTR_ERR(ctx->aead_fbk),
+					     "%s() failed to allocate fallback for %s\n",
+					     __func__, alg->cra_name);
+	}
+
+	crypto_aead_set_reqsize(tfm, sizeof(struct starfive_cryp_ctx) +
+				sizeof(struct aead_request));
+
+	return 0;
+}
+
+static void starfive_aes_aead_exit_tfm(struct crypto_aead *tfm)
+{
+	struct starfive_cryp_ctx *ctx = crypto_aead_ctx(tfm);
+
+	crypto_free_aead(ctx->aead_fbk);
+}
+
+static int starfive_aes_crypt(struct skcipher_request *req, unsigned long flags)
+{
+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+	struct starfive_cryp_ctx *ctx = crypto_skcipher_ctx(tfm);
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+	unsigned int blocksize_align = crypto_skcipher_blocksize(tfm) - 1;
+
+	cryp->flags = flags;
+
+	if ((cryp->flags & FLG_MODE_MASK) == STARFIVE_AES_MODE_ECB ||
+	    (cryp->flags & FLG_MODE_MASK) == STARFIVE_AES_MODE_CBC)
+		if (req->cryptlen & blocksize_align)
+			return -EINVAL;
+
+	return crypto_transfer_skcipher_request_to_engine(cryp->engine, req);
+}
+
+static int starfive_aes_aead_crypt(struct aead_request *req, unsigned long flags)
+{
+	struct starfive_cryp_ctx *ctx = crypto_aead_ctx(crypto_aead_reqtfm(req));
+	struct starfive_cryp_dev *cryp = ctx->cryp;
+
+	cryp->flags = flags;
+
+	/*
+	 * HW engine could not perform CCM tag verification on
+	 * non-blocksize aligned text, use fallback algo instead
+	 */
+	if (ctx->aead_fbk && !is_encrypt(cryp)) {
+		struct aead_request *subreq = aead_request_ctx(req);
+
+		aead_request_set_tfm(subreq, ctx->aead_fbk);
+		aead_request_set_callback(subreq, req->base.flags,
+					  req->base.complete, req->base.data);
+		aead_request_set_crypt(subreq, req->src,
+				       req->dst, req->cryptlen, req->iv);
+		aead_request_set_ad(subreq, req->assoclen);
+
+		return crypto_aead_decrypt(subreq);
+	}
+
+	return crypto_transfer_aead_request_to_engine(cryp->engine, req);
+}
+
+static int starfive_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
+			       unsigned int keylen)
+{
+	struct starfive_cryp_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+	if (!key || !keylen)
+		return -EINVAL;
+
+	if (keylen != AES_KEYSIZE_128 &&
+	    keylen != AES_KEYSIZE_192 &&
+	    keylen != AES_KEYSIZE_256)
+		return -EINVAL;
+
+	memcpy(ctx->key, key, keylen);
+	ctx->keylen = keylen;
+
+	return 0;
+}
+
+static int starfive_aes_aead_setkey(struct crypto_aead *tfm, const u8 *key,
+				    unsigned int keylen)
+{
+	struct starfive_cryp_ctx *ctx = crypto_aead_ctx(tfm);
+
+	if (!key || !keylen)
+		return -EINVAL;
+
+	if (keylen != AES_KEYSIZE_128 &&
+	    keylen != AES_KEYSIZE_192 &&
+	    keylen != AES_KEYSIZE_256)
+		return -EINVAL;
+
+	memcpy(ctx->key, key, keylen);
+	ctx->keylen = keylen;
+
+	if (ctx->aead_fbk)
+		return crypto_aead_setkey(ctx->aead_fbk, key, keylen);
+
+	return 0;
+}
+
+static int starfive_aes_gcm_setauthsize(struct crypto_aead *tfm,
+					unsigned int authsize)
+{
+	return crypto_gcm_check_authsize(authsize);
+}
+
+static int starfive_aes_ccm_setauthsize(struct crypto_aead *tfm,
+					unsigned int authsize)
+{
+	struct starfive_cryp_ctx *ctx = crypto_aead_ctx(tfm);
+
+	switch (authsize) {
+	case 4:
+	case 6:
+	case 8:
+	case 10:
+	case 12:
+	case 14:
+	case 16:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return crypto_aead_setauthsize(ctx->aead_fbk, authsize);
+}
+
+static int starfive_aes_ecb_encrypt(struct skcipher_request *req)
+{
+	return starfive_aes_crypt(req, STARFIVE_AES_MODE_ECB | FLG_ENCRYPT);
+}
+
+static int starfive_aes_ecb_decrypt(struct skcipher_request *req)
+{
+	return starfive_aes_crypt(req, STARFIVE_AES_MODE_ECB);
+}
+
+static int starfive_aes_cbc_encrypt(struct skcipher_request *req)
+{
+	return starfive_aes_crypt(req, STARFIVE_AES_MODE_CBC | FLG_ENCRYPT);
+}
+
+static int starfive_aes_cbc_decrypt(struct skcipher_request *req)
+{
+	return starfive_aes_crypt(req, STARFIVE_AES_MODE_CBC);
+}
+
+static int starfive_aes_cfb_encrypt(struct skcipher_request *req)
+{
+	return starfive_aes_crypt(req, STARFIVE_AES_MODE_CFB | FLG_ENCRYPT);
+}
+
+static int starfive_aes_cfb_decrypt(struct skcipher_request *req)
+{
+	return starfive_aes_crypt(req, STARFIVE_AES_MODE_CFB);
+}
+
+static int starfive_aes_ofb_encrypt(struct skcipher_request *req)
+{
+	return starfive_aes_crypt(req, STARFIVE_AES_MODE_OFB | FLG_ENCRYPT);
+}
+
+static int starfive_aes_ofb_decrypt(struct skcipher_request *req)
+{
+	return starfive_aes_crypt(req, STARFIVE_AES_MODE_OFB);
+}
+
+static int starfive_aes_ctr_encrypt(struct skcipher_request *req)
+{
+	return starfive_aes_crypt(req, STARFIVE_AES_MODE_CTR | FLG_ENCRYPT);
+}
+
+static int starfive_aes_ctr_decrypt(struct skcipher_request *req)
+{
+	return starfive_aes_crypt(req, STARFIVE_AES_MODE_CTR);
+}
+
+static int starfive_aes_gcm_encrypt(struct aead_request *req)
+{
+	return starfive_aes_aead_crypt(req, STARFIVE_AES_MODE_GCM | FLG_ENCRYPT);
+}
+
+static int starfive_aes_gcm_decrypt(struct aead_request *req)
+{
+	return starfive_aes_aead_crypt(req, STARFIVE_AES_MODE_GCM);
+}
+
+static int starfive_aes_ccm_encrypt(struct aead_request *req)
+{
+	int ret;
+
+	ret = starfive_aes_ccm_check_iv(req->iv);
+	if (ret)
+		return ret;
+
+	return starfive_aes_aead_crypt(req, STARFIVE_AES_MODE_CCM | FLG_ENCRYPT);
+}
+
+static int starfive_aes_ccm_decrypt(struct aead_request *req)
+{
+	int ret;
+
+	ret = starfive_aes_ccm_check_iv(req->iv);
+	if (ret)
+		return ret;
+
+	return starfive_aes_aead_crypt(req, STARFIVE_AES_MODE_CCM);
+}
+
+static struct skcipher_engine_alg skcipher_algs[] = {
+{
+	.base.init			= starfive_aes_init_tfm,
+	.base.setkey			= starfive_aes_setkey,
+	.base.encrypt			= starfive_aes_ecb_encrypt,
+	.base.decrypt			= starfive_aes_ecb_decrypt,
+	.base.min_keysize		= AES_MIN_KEY_SIZE,
+	.base.max_keysize		= AES_MAX_KEY_SIZE,
+	.base.base = {
+		.cra_name		= "ecb(aes)",
+		.cra_driver_name	= "starfive-ecb-aes",
+		.cra_priority		= 200,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= AES_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct starfive_cryp_ctx),
+		.cra_alignmask		= 0xf,
+		.cra_module		= THIS_MODULE,
+	},
+	.op = {
+		.do_one_request = starfive_aes_do_one_req,
+	},
+}, {
+	.base.init			= starfive_aes_init_tfm,
+	.base.setkey			= starfive_aes_setkey,
+	.base.encrypt			= starfive_aes_cbc_encrypt,
+	.base.decrypt			= starfive_aes_cbc_decrypt,
+	.base.min_keysize		= AES_MIN_KEY_SIZE,
+	.base.max_keysize		= AES_MAX_KEY_SIZE,
+	.base.ivsize			= AES_BLOCK_SIZE,
+	.base.base = {
+		.cra_name		= "cbc(aes)",
+		.cra_driver_name	= "starfive-cbc-aes",
+		.cra_priority		= 200,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= AES_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct starfive_cryp_ctx),
+		.cra_alignmask		= 0xf,
+		.cra_module		= THIS_MODULE,
+	},
+	.op = {
+		.do_one_request = starfive_aes_do_one_req,
+	},
+}, {
+	.base.init			= starfive_aes_init_tfm,
+	.base.setkey			= starfive_aes_setkey,
+	.base.encrypt			= starfive_aes_ctr_encrypt,
+	.base.decrypt			= starfive_aes_ctr_decrypt,
+	.base.min_keysize		= AES_MIN_KEY_SIZE,
+	.base.max_keysize		= AES_MAX_KEY_SIZE,
+	.base.ivsize			= AES_BLOCK_SIZE,
+	.base.base = {
+		.cra_name		= "ctr(aes)",
+		.cra_driver_name	= "starfive-ctr-aes",
+		.cra_priority		= 200,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= 1,
+		.cra_ctxsize		= sizeof(struct starfive_cryp_ctx),
+		.cra_alignmask		= 0xf,
+		.cra_module		= THIS_MODULE,
+	},
+	.op = {
+		.do_one_request = starfive_aes_do_one_req,
+	},
+}, {
+	.base.init			= starfive_aes_init_tfm,
+	.base.setkey			= starfive_aes_setkey,
+	.base.encrypt			= starfive_aes_cfb_encrypt,
+	.base.decrypt			= starfive_aes_cfb_decrypt,
+	.base.min_keysize		= AES_MIN_KEY_SIZE,
+	.base.max_keysize		= AES_MAX_KEY_SIZE,
+	.base.ivsize			= AES_BLOCK_SIZE,
+	.base.base = {
+		.cra_name		= "cfb(aes)",
+		.cra_driver_name	= "starfive-cfb-aes",
+		.cra_priority		= 200,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= 1,
+		.cra_ctxsize		= sizeof(struct starfive_cryp_ctx),
+		.cra_alignmask		= 0xf,
+		.cra_module		= THIS_MODULE,
+	},
+	.op = {
+		.do_one_request = starfive_aes_do_one_req,
+	},
+}, {
+	.base.init			= starfive_aes_init_tfm,
+	.base.setkey			= starfive_aes_setkey,
+	.base.encrypt			= starfive_aes_ofb_encrypt,
+	.base.decrypt			= starfive_aes_ofb_decrypt,
+	.base.min_keysize		= AES_MIN_KEY_SIZE,
+	.base.max_keysize		= AES_MAX_KEY_SIZE,
+	.base.ivsize			= AES_BLOCK_SIZE,
+	.base.base = {
+		.cra_name		= "ofb(aes)",
+		.cra_driver_name	= "starfive-ofb-aes",
+		.cra_priority		= 200,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= 1,
+		.cra_ctxsize		= sizeof(struct starfive_cryp_ctx),
+		.cra_alignmask		= 0xf,
+		.cra_module		= THIS_MODULE,
+	},
+	.op = {
+		.do_one_request = starfive_aes_do_one_req,
+	},
+},
+};
+
+static struct aead_engine_alg aead_algs[] = {
+{
+	.base.setkey			= starfive_aes_aead_setkey,
+	.base.setauthsize		= starfive_aes_gcm_setauthsize,
+	.base.encrypt			= starfive_aes_gcm_encrypt,
+	.base.decrypt			= starfive_aes_gcm_decrypt,
+	.base.init			= starfive_aes_aead_init_tfm,
+	.base.exit			= starfive_aes_aead_exit_tfm,
+	.base.ivsize			= GCM_AES_IV_SIZE,
+	.base.maxauthsize		= AES_BLOCK_SIZE,
+	.base.base = {
+		.cra_name               = "gcm(aes)",
+		.cra_driver_name        = "starfive-gcm-aes",
+		.cra_priority           = 200,
+		.cra_flags              = CRYPTO_ALG_ASYNC,
+		.cra_blocksize          = 1,
+		.cra_ctxsize            = sizeof(struct starfive_cryp_ctx),
+		.cra_alignmask          = 0xf,
+		.cra_module             = THIS_MODULE,
+	},
+	.op = {
+		.do_one_request = starfive_aes_aead_do_one_req,
+	},
+}, {
+	.base.setkey			= starfive_aes_aead_setkey,
+	.base.setauthsize		= starfive_aes_ccm_setauthsize,
+	.base.encrypt			= starfive_aes_ccm_encrypt,
+	.base.decrypt			= starfive_aes_ccm_decrypt,
+	.base.init			= starfive_aes_aead_init_tfm,
+	.base.exit			= starfive_aes_aead_exit_tfm,
+	.base.ivsize			= AES_BLOCK_SIZE,
+	.base.maxauthsize		= AES_BLOCK_SIZE,
+	.base.base = {
+		.cra_name		= "ccm(aes)",
+		.cra_driver_name	= "starfive-ccm-aes",
+		.cra_priority		= 200,
+		.cra_flags		= CRYPTO_ALG_ASYNC |
+					  CRYPTO_ALG_NEED_FALLBACK,
+		.cra_blocksize		= 1,
+		.cra_ctxsize		= sizeof(struct starfive_cryp_ctx),
+		.cra_alignmask		= 0xf,
+		.cra_module		= THIS_MODULE,
+	},
+	.op = {
+		.do_one_request = starfive_aes_aead_do_one_req,
+	},
+},
+};
+
+int starfive_aes_register_algs(void)
+{
+	int ret;
+
+	ret = crypto_engine_register_skciphers(skcipher_algs, ARRAY_SIZE(skcipher_algs));
+	if (ret)
+		return ret;
+
+	ret = crypto_engine_register_aeads(aead_algs, ARRAY_SIZE(aead_algs));
+	if (ret)
+		crypto_engine_unregister_skciphers(skcipher_algs, ARRAY_SIZE(skcipher_algs));
+
+	return ret;
+}
+
+void starfive_aes_unregister_algs(void)
+{
+	crypto_engine_unregister_aeads(aead_algs, ARRAY_SIZE(aead_algs));
+	crypto_engine_unregister_skciphers(skcipher_algs, ARRAY_SIZE(skcipher_algs));
+}