diff options
| author | Giovanni Cabiddu <giovanni.cabiddu@intel.com> | 2020-10-12 21:38:33 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-10-30 17:34:54 +1100 |
| commit | dbf568755e7781a4ce8bd3c587c2c388600ae661 (patch) | |
| tree | 1a842752afe7d15883613dd9169b6ca73bb19fd3 | |
| parent | ad1332aa67eca6223b130cb593621ee16439b902 (diff) | |
| download | linux-next-dbf568755e7781a4ce8bd3c587c2c388600ae661.tar.gz | |
crypto: qat - register crypto instances based on capability
Introduce the function adf_hw_dev_has_crypto() that returns true if a
device supports symmetric crypto, asymmetric crypto and authentication
services.
If a device has crypto capabilities, add crypto instances to the
configuration.
This is done since the function that allows to retrieve crypto
instances, qat_crypto_get_instance_node(), return instances that support
all crypto services.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Reviewed-by: Fiona Trahe <fiona.trahe@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/qat/qat_common/qat_crypto.c | 7 | ||||
| -rw-r--r-- | drivers/crypto/qat/qat_common/qat_crypto.h | 15 |
2 files changed, 21 insertions, 1 deletions
diff --git a/drivers/crypto/qat/qat_common/qat_crypto.c b/drivers/crypto/qat/qat_common/qat_crypto.c index ab621b7dbd20..089d5d7b738e 100644 --- a/drivers/crypto/qat/qat_common/qat_crypto.c +++ b/drivers/crypto/qat/qat_common/qat_crypto.c @@ -117,10 +117,15 @@ int qat_crypto_dev_config(struct adf_accel_dev *accel_dev) { int cpus = num_online_cpus(); int banks = GET_MAX_BANKS(accel_dev); - int instances = min(cpus, banks); char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES]; int i; unsigned long val; + int instances; + + if (adf_hw_dev_has_crypto(accel_dev)) + instances = min(cpus, banks); + else + instances = 0; if (adf_cfg_section_add(accel_dev, ADF_KERNEL_SEC)) goto err; diff --git a/drivers/crypto/qat/qat_common/qat_crypto.h b/drivers/crypto/qat/qat_common/qat_crypto.h index 8d11e94cbf08..b6a4c95ae003 100644 --- a/drivers/crypto/qat/qat_common/qat_crypto.h +++ b/drivers/crypto/qat/qat_common/qat_crypto.h @@ -55,4 +55,19 @@ struct qat_crypto_request { bool encryption; }; +static inline bool adf_hw_dev_has_crypto(struct adf_accel_dev *accel_dev) +{ + struct adf_hw_device_data *hw_device = accel_dev->hw_device; + u32 mask = ~hw_device->accel_capabilities_mask; + + if (mask & ADF_ACCEL_CAPABILITIES_CRYPTO_SYMMETRIC) + return false; + if (mask & ADF_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC) + return false; + if (mask & ADF_ACCEL_CAPABILITIES_AUTHENTICATION) + return false; + + return true; +} + #endif |