crypto: ccp - CCP versioning support

Future hardware may introduce new algorithms wherein the
driver will need to manage resources for different versions
of the cryptographic coprocessor. This precursor patch
determines the version of the available device, and marks
and registers algorithms accordingly. A structure is added
which manages the version-specific data.

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/crypto/ccp/ccp-dev.h b/drivers/crypto/ccp/ccp-dev.h
index 974dc055e0ab..90a8cc8c7d46 100644
--- a/drivers/crypto/ccp/ccp-dev.h
+++ b/drivers/crypto/ccp/ccp-dev.h
@@ -141,6 +141,13 @@
 #define CCP_ECC_RESULT_OFFSET		60
 #define CCP_ECC_RESULT_SUCCESS		0x0001
 
+/* Structure to hold CCP version-specific values */
+struct ccp_vdata {
+	unsigned int version;
+};
+
+extern struct ccp_vdata ccpv3;
+
 struct ccp_device;
 struct ccp_cmd;
 
@@ -187,6 +194,7 @@ struct ccp_cmd_queue {
 struct ccp_device {
 	struct list_head entry;
 
+	struct ccp_vdata *vdata;
 	unsigned int ord;
 	char name[MAX_CCP_NAME_LEN];
 	char rngname[MAX_CCP_NAME_LEN];