crypto: caam - refactor encryption descriptors generation

Refactor the generation of the authenc, ablkcipher shared descriptors
and exports the functionality, such that they could be shared
with the upcoming caam/qi (Queue Interface) driver.

Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 97 insertions, 0 deletions

diff --git a/drivers/crypto/caam/caamalg_desc.h b/drivers/crypto/caam/caamalg_desc.h
new file mode 100644
index 0000000..9555173
--- /dev/null
+++ b/drivers/crypto/caam/caamalg_desc.h
@@ -0,0 +1,97 @@
+/*
+ * Shared descriptors for aead, ablkcipher algorithms
+ *
+ * Copyright 2016 NXP
+ */
+
+#ifndef _CAAMALG_DESC_H_
+#define _CAAMALG_DESC_H_
+
+/* length of descriptors text */
+#define DESC_AEAD_BASE			(4 * CAAM_CMD_SZ)
+#define DESC_AEAD_ENC_LEN		(DESC_AEAD_BASE + 11 * CAAM_CMD_SZ)
+#define DESC_AEAD_DEC_LEN		(DESC_AEAD_BASE + 15 * CAAM_CMD_SZ)
+#define DESC_AEAD_GIVENC_LEN		(DESC_AEAD_ENC_LEN + 7 * CAAM_CMD_SZ)
+
+/* Note: Nonce is counted in cdata.keylen */
+#define DESC_AEAD_CTR_RFC3686_LEN	(4 * CAAM_CMD_SZ)
+
+#define DESC_AEAD_NULL_BASE		(3 * CAAM_CMD_SZ)
+#define DESC_AEAD_NULL_ENC_LEN		(DESC_AEAD_NULL_BASE + 11 * CAAM_CMD_SZ)
+#define DESC_AEAD_NULL_DEC_LEN		(DESC_AEAD_NULL_BASE + 13 * CAAM_CMD_SZ)
+
+#define DESC_GCM_BASE			(3 * CAAM_CMD_SZ)
+#define DESC_GCM_ENC_LEN		(DESC_GCM_BASE + 16 * CAAM_CMD_SZ)
+#define DESC_GCM_DEC_LEN		(DESC_GCM_BASE + 12 * CAAM_CMD_SZ)
+
+#define DESC_RFC4106_BASE		(3 * CAAM_CMD_SZ)
+#define DESC_RFC4106_ENC_LEN		(DESC_RFC4106_BASE + 13 * CAAM_CMD_SZ)
+#define DESC_RFC4106_DEC_LEN		(DESC_RFC4106_BASE + 13 * CAAM_CMD_SZ)
+
+#define DESC_RFC4543_BASE		(3 * CAAM_CMD_SZ)
+#define DESC_RFC4543_ENC_LEN		(DESC_RFC4543_BASE + 11 * CAAM_CMD_SZ)
+#define DESC_RFC4543_DEC_LEN		(DESC_RFC4543_BASE + 12 * CAAM_CMD_SZ)
+
+#define DESC_ABLKCIPHER_BASE		(3 * CAAM_CMD_SZ)
+#define DESC_ABLKCIPHER_ENC_LEN		(DESC_ABLKCIPHER_BASE + \
+					 20 * CAAM_CMD_SZ)
+#define DESC_ABLKCIPHER_DEC_LEN		(DESC_ABLKCIPHER_BASE + \
+					 15 * CAAM_CMD_SZ)
+
+void cnstr_shdsc_aead_null_encap(u32 * const desc, struct alginfo *adata,
+				 unsigned int icvsize);
+
+void cnstr_shdsc_aead_null_decap(u32 * const desc, struct alginfo *adata,
+				 unsigned int icvsize);
+
+void cnstr_shdsc_aead_encap(u32 * const desc, struct alginfo *cdata,
+			    struct alginfo *adata, unsigned int icvsize,
+			    const bool is_rfc3686, u32 *nonce,
+			    const u32 ctx1_iv_off);
+
+void cnstr_shdsc_aead_decap(u32 * const desc, struct alginfo *cdata,
+			    struct alginfo *adata, unsigned int ivsize,
+			    unsigned int icvsize, const bool geniv,
+			    const bool is_rfc3686, u32 *nonce,
+			    const u32 ctx1_iv_off);
+
+void cnstr_shdsc_aead_givencap(u32 * const desc, struct alginfo *cdata,
+			       struct alginfo *adata, unsigned int ivsize,
+			       unsigned int icvsize, const bool is_rfc3686,
+			       u32 *nonce, const u32 ctx1_iv_off);
+
+void cnstr_shdsc_gcm_encap(u32 * const desc, struct alginfo *cdata,
+			   unsigned int icvsize);
+
+void cnstr_shdsc_gcm_decap(u32 * const desc, struct alginfo *cdata,
+			   unsigned int icvsize);
+
+void cnstr_shdsc_rfc4106_encap(u32 * const desc, struct alginfo *cdata,
+			       unsigned int icvsize);
+
+void cnstr_shdsc_rfc4106_decap(u32 * const desc, struct alginfo *cdata,
+			       unsigned int icvsize);
+
+void cnstr_shdsc_rfc4543_encap(u32 * const desc, struct alginfo *cdata,
+			       unsigned int icvsize);
+
+void cnstr_shdsc_rfc4543_decap(u32 * const desc, struct alginfo *cdata,
+			       unsigned int icvsize);
+
+void cnstr_shdsc_ablkcipher_encap(u32 * const desc, struct alginfo *cdata,
+				  unsigned int ivsize, const bool is_rfc3686,
+				  const u32 ctx1_iv_off);
+
+void cnstr_shdsc_ablkcipher_decap(u32 * const desc, struct alginfo *cdata,
+				  unsigned int ivsize, const bool is_rfc3686,
+				  const u32 ctx1_iv_off);
+
+void cnstr_shdsc_ablkcipher_givencap(u32 * const desc, struct alginfo *cdata,
+				     unsigned int ivsize, const bool is_rfc3686,
+				     const u32 ctx1_iv_off);
+
+void cnstr_shdsc_xts_ablkcipher_encap(u32 * const desc, struct alginfo *cdata);
+
+void cnstr_shdsc_xts_ablkcipher_decap(u32 * const desc, struct alginfo *cdata);
+
+#endif /* _CAAMALG_DESC_H_ */