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@xxxxxxxxx>
Reviewed-by: Wojciech Ziemba <wojciech.ziemba@xxxxxxxxx>
Reviewed-by: Fiona Trahe <fiona.trahe@xxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/crypto/qat/qat_common/qat_crypto.c | 7 ++++++-
drivers/crypto/qat/qat_common/qat_crypto.h | 15 +++++++++++++++
2 files changed, 21 insertions(+), 1 deletion(-)
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
--
2.26.2
