crypto: caam/qi2 - add support for ahash algorithms

Add support for unkeyed and keyed (hmac) md5, sha algorithms.
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/caam/Kconfig

@@ -160,6 +160,7 @@ config CRYPTO_DEV_FSL_DPAA2_CAAM
 	select CRYPTO_BLKCIPHER
 	select CRYPTO_AUTHENC
 	select CRYPTO_AEAD
+	select CRYPTO_HASH
 	help
 	  CAAM driver for QorIQ Data Path Acceleration Architecture 2.
 	  It handles DPSECI DPAA2 objects that sit on the Management Complex
@@ -174,4 +175,5 @@ config CRYPTO_DEV_FSL_CAAM_CRYPTO_API_DESC
 		      CRYPTO_DEV_FSL_DPAA2_CAAM)
 
 config CRYPTO_DEV_FSL_CAAM_AHASH_API_DESC
-	def_tristate (CRYPTO_DEV_FSL_CAAM_AHASH_API)
+	def_tristate (CRYPTO_DEV_FSL_CAAM_AHASH_API || \
+		      CRYPTO_DEV_FSL_DPAA2_CAAM)

drivers/crypto/caam/caamalg_qi2.h

@@ -158,6 +158,22 @@ struct skcipher_edesc {
 	struct dpaa2_sg_entry sgt[0];
 };
 
+/*
+ * ahash_edesc - s/w-extended ahash descriptor
+ * @dst_dma: I/O virtual address of req->result
+ * @qm_sg_dma: I/O virtual address of h/w link table
+ * @src_nents: number of segments in input scatterlist
+ * @qm_sg_bytes: length of dma mapped qm_sg space
+ * @sgt: pointer to h/w link table
+ */
+struct ahash_edesc {
+	dma_addr_t dst_dma;
+	dma_addr_t qm_sg_dma;
+	int src_nents;
+	int qm_sg_bytes;
+	struct dpaa2_sg_entry sgt[0];
+};
+
 /**
  * caam_flc - Flow Context (FLC)
  * @flc: Flow Context options