hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

crypto: qce - Make result dump optional 

Qualcomm crypto engine allows for IV registers and status register
to be concatenated to the output. This option is enabled by setting the
RESULTS_DUMP field in GOPROC  register. This is useful for most of the
algorithms to either retrieve status of operation or in case of
authentication algorithms to retrieve the mac. But for ccm
algorithms, the mac is part of the output stream and not retrieved
from the IV registers, thus needing a separate buffer to retrieve it.
Make enabling RESULTS_DUMP field optional so that algorithms can choose
whether or not to enable the option.
Note that in this patch, the enabled algorithms always choose
RESULTS_DUMP to be enabled. But later with the introduction of ccm
algorithms, this changes.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Thara Gopinath 2021-04-29 11:07:02 -04:00 committed by Herbert Xu
parent a9ca8eacb3
commit 6c34e446b2
1 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/crypto/qce/common.c
View File

@ -88,9 +88,12 @@ static void qce_setup_config(struct qce_device *qce)
qce_write(qce, REG_CONFIG, config);
}
static inline void qce_crypto_go(struct qce_device *qce)
static inline void qce_crypto_go(struct qce_device *qce, bool result_dump)
{
qce_write(qce, REG_GOPROC, BIT(GO_SHIFT) | BIT(RESULTS_DUMP_SHIFT));
if (result_dump)
qce_write(qce, REG_GOPROC, BIT(GO_SHIFT) | BIT(RESULTS_DUMP_SHIFT));
else
qce_write(qce, REG_GOPROC, BIT(GO_SHIFT));
}
#ifdef CONFIG_CRYPTO_DEV_QCE_SHA
@ -219,7 +222,7 @@ go_proc:
config = qce_config_reg(qce, 1);
qce_write(qce, REG_CONFIG, config);
qce_crypto_go(qce);
qce_crypto_go(qce, true);
return 0;
}
@ -380,7 +383,7 @@ static int qce_setup_regs_skcipher(struct crypto_async_request *async_req)
config = qce_config_reg(qce, 1);
qce_write(qce, REG_CONFIG, config);
qce_crypto_go(qce);
qce_crypto_go(qce, true);
return 0;
}