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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>
This commit is contained in:
Giovanni Cabiddu 2020-10-12 21:38:33 +01:00 committed by Herbert Xu
parent ad1332aa67
commit dbf568755e
2 changed files with 21 additions and 1 deletions
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7
drivers/crypto/qat/qat_common/qat_crypto.c
View File

@ -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;

15
drivers/crypto/qat/qat_common/qat_crypto.h
View File

@ -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