Commit dbf56875 authored by Giovanni Cabiddu's avatar Giovanni Cabiddu Committed by Herbert Xu
Browse files

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: default avatarGiovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: default avatarWojciech Ziemba <wojciech.ziemba@intel.com>
Reviewed-by: default avatarFiona Trahe <fiona.trahe@intel.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent ad1332aa

drivers/crypto/qat/qat_common/qat_crypto.c

+6 −1
Original line number Diff line number Diff line
@@ -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;

drivers/crypto/qat/qat_common/qat_crypto.h

+15 −0
Original line number Diff line number Diff line
@@ -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