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Commit e28c190d authored by Gary R Hook's avatar Gary R Hook Committed by Herbert Xu
Browse files

csrypto: ccp - Expand RSA support for a v5 ccp 



A version 5 CCP can handle an RSA modulus up to 16k bits.

Signed-off-by: default avatarGary R Hook <gary.hook@amd.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent ceeec0af

drivers/crypto/ccp/ccp-crypto-rsa.c

+4 −1
Original line number Diff line number Diff line
@@ -60,6 +60,9 @@ static int ccp_rsa_complete(struct crypto_async_request *async_req, int ret) 


static unsigned int ccp_rsa_maxsize(struct crypto_akcipher *tfm)

{

	if (ccp_version() > CCP_VERSION(3, 0))

		return CCP5_RSA_MAXMOD;

	else

		return CCP_RSA_MAXMOD;

}

drivers/crypto/ccp/ccp-crypto.h

+1 −0
Original line number Diff line number Diff line
@@ -255,6 +255,7 @@ struct ccp_rsa_req_ctx { 
};



#define	CCP_RSA_MAXMOD	(4 * 1024 / 8)

#define	CCP5_RSA_MAXMOD	(16 * 1024 / 8)



/***** Common Context Structure *****/

struct ccp_ctx {

drivers/crypto/ccp/ccp-dev-v3.c

+1 −0
Original line number Diff line number Diff line
@@ -597,4 +597,5 @@ const struct ccp_vdata ccpv3 = { 
	.setup = NULL,

	.perform = &ccp3_actions,

	.offset = 0x20000,

	.rsamax = CCP_RSA_MAX_WIDTH,

};

drivers/crypto/ccp/ccp-dev-v5.c

+2 −0
Original line number Diff line number Diff line
@@ -1112,6 +1112,7 @@ const struct ccp_vdata ccpv5a = { 
	.setup = ccp5_config,

	.perform = &ccp5_actions,

	.offset = 0x0,

	.rsamax = CCP5_RSA_MAX_WIDTH,

};



const struct ccp_vdata ccpv5b = {
@@ -1120,4 +1121,5 @@ const struct ccp_vdata ccpv5b = { 
	.setup = ccp5other_config,

	.perform = &ccp5_actions,

	.offset = 0x0,

	.rsamax = CCP5_RSA_MAX_WIDTH,

};

drivers/crypto/ccp/ccp-dev.h

+1 −0
Original line number Diff line number Diff line
@@ -202,6 +202,7 @@ 
#define CCP_SHA_SB_COUNT		1



#define CCP_RSA_MAX_WIDTH		4096

#define CCP5_RSA_MAX_WIDTH		16384



#define CCP_PASSTHRU_BLOCKSIZE		256

#define CCP_PASSTHRU_MASKSIZE		32