Commit 547bde7b authored by Giovanni Cabiddu's avatar Giovanni Cabiddu Committed by Herbert Xu
Browse files

crypto: qat - set CIPHER capability for QAT GEN2 



Set the CIPHER capability for QAT GEN2 devices if the hardware supports
it. This is done if both the CIPHER and the AUTHENTICATION engines are
available on the device.

Signed-off-by: default avatarGiovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: default avatarMarco Chiappero <marco.chiappero@intel.com>
Reviewed-by: default avatarFiona Trahe <fiona.trahe@intel.com>
Reviewed-by: default avatarMarco Chiappero <marco.chiappero@intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent e0441e2b

drivers/crypto/qat/qat_common/adf_gen2_hw_data.c

+9 −3
Original line number Diff line number Diff line
@@ -211,17 +211,23 @@ u32 adf_gen2_get_accel_cap(struct adf_accel_dev *accel_dev) 
	u32 legfuses;

	u32 capabilities = ICP_ACCEL_CAPABILITIES_CRYPTO_SYMMETRIC |

			   ICP_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC |

			   ICP_ACCEL_CAPABILITIES_AUTHENTICATION;

			   ICP_ACCEL_CAPABILITIES_AUTHENTICATION |

			   ICP_ACCEL_CAPABILITIES_CIPHER;



	/* Read accelerator capabilities mask */

	pci_read_config_dword(pdev, ADF_DEVICE_LEGFUSE_OFFSET, &legfuses);



	if (legfuses & ICP_ACCEL_MASK_CIPHER_SLICE)

	/* A set bit in legfuses means the feature is OFF in this SKU */

	if (legfuses & ICP_ACCEL_MASK_CIPHER_SLICE) {

		capabilities &= ~ICP_ACCEL_CAPABILITIES_CRYPTO_SYMMETRIC;

		capabilities &= ~ICP_ACCEL_CAPABILITIES_CIPHER;

	}

	if (legfuses & ICP_ACCEL_MASK_PKE_SLICE)

		capabilities &= ~ICP_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC;

	if (legfuses & ICP_ACCEL_MASK_AUTH_SLICE)

	if (legfuses & ICP_ACCEL_MASK_AUTH_SLICE) {

		capabilities &= ~ICP_ACCEL_CAPABILITIES_AUTHENTICATION;

		capabilities &= ~ICP_ACCEL_CAPABILITIES_CIPHER;

	}



	if ((straps | fuses) & ADF_POWERGATE_PKE)

		capabilities &= ~ICP_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC;