crypto: starfive - Add hash and HMAC support

Adding hash/HMAC support for SHA-2 and SM3 to StarFive cryptographic
module.

Co-developed-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Huan Feng <huan.feng@starfivetech.com>
Signed-off-by: Jia Jie Ho <jiajie.ho@starfivetech.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 67 insertions, 3 deletions

diff --git a/drivers/crypto/starfive/jh7110-cryp.h b/drivers/crypto/starfive/jh7110-cryp.h
index 393efd38b098..021d6e24bc86 100644
--- a/drivers/crypto/starfive/jh7110-cryp.h
+++ b/drivers/crypto/starfive/jh7110-cryp.h
@@ -7,6 +7,8 @@
 #include <linux/dmaengine.h>
 
 #include <crypto/engine.h>
+#include <crypto/sha2.h>
+#include <crypto/sm3.h>
 
 #define STARFIVE_ALG_CR_OFFSET			0x0
 #define STARFIVE_ALG_FIFO_OFFSET		0x4
@@ -15,7 +17,43 @@
 #define STARFIVE_DMA_IN_LEN_OFFSET		0x10
 #define STARFIVE_DMA_OUT_LEN_OFFSET		0x14
 
+#define STARFIVE_IE_MASK_HASH_DONE		0x4
+#define STARFIVE_IE_FLAG_HASH_DONE		0x4
+
 #define STARFIVE_MSG_BUFFER_SIZE		SZ_16K
+#define MAX_KEY_SIZE				SHA512_BLOCK_SIZE
+
+union starfive_hash_csr {
+	u32 v;
+	struct {
+		u32 start			:1;
+		u32 reset			:1;
+		u32 ie				:1;
+		u32 firstb			:1;
+#define STARFIVE_HASH_SM3			0x0
+#define STARFIVE_HASH_SHA224			0x3
+#define STARFIVE_HASH_SHA256			0x4
+#define STARFIVE_HASH_SHA384			0x5
+#define STARFIVE_HASH_SHA512			0x6
+#define STARFIVE_HASH_MODE_MASK			0x7
+		u32 mode			:3;
+		u32 rsvd_1			:1;
+		u32 final			:1;
+		u32 rsvd_2			:2;
+#define STARFIVE_HASH_HMAC_FLAGS		0x800
+		u32 hmac			:1;
+		u32 rsvd_3			:1;
+#define STARFIVE_HASH_KEY_DONE			BIT(13)
+		u32 key_done			:1;
+		u32 key_flag			:1;
+		u32 hmac_done			:1;
+#define STARFIVE_HASH_BUSY			BIT(16)
+		u32 busy			:1;
+		u32 hashdone			:1;
+		u32 rsvd_4			:14;
+	};
+};
+
 
 union starfive_alg_cr {
 	u32 v;
@@ -34,12 +72,18 @@ union starfive_alg_cr {
 struct starfive_cryp_ctx {
 	struct crypto_engine_ctx		enginectx;
 	struct starfive_cryp_dev		*cryp;
+	struct starfive_cryp_request_ctx	*rctx;
+
+	unsigned int				hash_mode;
+	u8					key[MAX_KEY_SIZE];
+	int					keylen;
+	bool					is_hmac;
+	struct crypto_ahash			*ahash_fbk;
 };
 
 struct starfive_cryp_dev {
 	struct list_head			list;
 	struct device				*dev;
-
 	struct clk				*hclk;
 	struct clk				*ahb;
 	struct reset_control			*rst;
@@ -52,12 +96,32 @@ struct starfive_cryp_dev {
 	struct dma_chan				*rx;
 	struct dma_slave_config			cfg_in;
 	struct dma_slave_config			cfg_out;
-
 	struct crypto_engine			*engine;
-
+	struct tasklet_struct			hash_done;
+	int					err;
 	union starfive_alg_cr			alg_cr;
+	union {
+		struct ahash_request		*hreq;
+	} req;
+};
+
+struct starfive_cryp_request_ctx {
+	union {
+		union starfive_hash_csr		hash;
+	} csr;
+
+	struct scatterlist			*in_sg;
+	struct ahash_request			ahash_fbk_req;
+	size_t					total;
+	unsigned int				blksize;
+	unsigned int				digsize;
+	unsigned long				in_sg_len;
 };
 
 struct starfive_cryp_dev *starfive_cryp_find_dev(struct starfive_cryp_ctx *ctx);
 
+int starfive_hash_register_algs(void);
+void starfive_hash_unregister_algs(void);
+
+void starfive_hash_done_task(unsigned long param);
 #endif