diff options
| author | Gary R Hook <gary.hook@amd.com> | 2017-07-17 23:16:13 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-07-28 12:58:02 +0300 |
| commit | 6ba46c7d4d7e2b4f38c9d9891dee4ba1f5338f31 (patch) | |
| tree | 7f8dabbcc83c52a1d569f6219e76c71cf57b1fb9 /drivers/crypto/ccp/ccp-dev-v5.c | |
| parent | 68cc652f83b9a4f79471db6c79ae0bfe5175eda3 (diff) | |
| download | linux-6ba46c7d4d7e2b4f38c9d9891dee4ba1f5338f31.tar.xz | |
crypto: ccp - Fix base RSA function for version 5 CCPs
Version 5 devices have requirements for buffer lengths, as well as
parameter format (e.g. bits vs. bytes). Fix the base CCP driver
code to meet requirements all supported versions.
Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccp/ccp-dev-v5.c')
| -rw-r--r-- | drivers/crypto/ccp/ccp-dev-v5.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c index b3526336d608..5f9e82beadfd 100644 --- a/drivers/crypto/ccp/ccp-dev-v5.c +++ b/drivers/crypto/ccp/ccp-dev-v5.c @@ -469,7 +469,7 @@ static int ccp5_perform_rsa(struct ccp_op *op) CCP5_CMD_PROT(&desc) = 0; function.raw = 0; - CCP_RSA_SIZE(&function) = op->u.rsa.mod_size >> 3; + CCP_RSA_SIZE(&function) = (op->u.rsa.mod_size + 7) >> 3; CCP5_CMD_FUNCTION(&desc) = function.raw; CCP5_CMD_LEN(&desc) = op->u.rsa.input_len; @@ -484,10 +484,10 @@ static int ccp5_perform_rsa(struct ccp_op *op) CCP5_CMD_DST_HI(&desc) = ccp_addr_hi(&op->dst.u.dma); CCP5_CMD_DST_MEM(&desc) = CCP_MEMTYPE_SYSTEM; - /* Exponent is in LSB memory */ - CCP5_CMD_KEY_LO(&desc) = op->sb_key * LSB_ITEM_SIZE; - CCP5_CMD_KEY_HI(&desc) = 0; - CCP5_CMD_KEY_MEM(&desc) = CCP_MEMTYPE_SB; + /* Key (Exponent) is in external memory */ + CCP5_CMD_KEY_LO(&desc) = ccp_addr_lo(&op->exp.u.dma); + CCP5_CMD_KEY_HI(&desc) = ccp_addr_hi(&op->exp.u.dma); + CCP5_CMD_KEY_MEM(&desc) = CCP_MEMTYPE_SYSTEM; return ccp5_do_cmd(&desc, op->cmd_q); } |