crypto: qat - set COMPRESSION capability for QAT GEN2

Enhance the device capability detection for QAT GEN2 devices to detect if
a device supports the compression service.

This is done by checking both the fuse and the strap registers for c62x
and c3xxx and only the fuse register for dh895xcc.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Fiona Trahe <fiona.trahe@intel.com>
Reviewed-by: Marco Chiappero <marco.chiappero@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/qat/qat_common/adf_gen2_hw_data.c

@@ -212,7 +212,8 @@ u32 adf_gen2_get_accel_cap(struct adf_accel_dev *accel_dev)
 	u32 capabilities = ICP_ACCEL_CAPABILITIES_CRYPTO_SYMMETRIC |
 			   ICP_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC |
 			   ICP_ACCEL_CAPABILITIES_AUTHENTICATION |
-			   ICP_ACCEL_CAPABILITIES_CIPHER;
+			   ICP_ACCEL_CAPABILITIES_CIPHER |
+			   ICP_ACCEL_CAPABILITIES_COMPRESSION;
 
 	/* Read accelerator capabilities mask */
 	pci_read_config_dword(pdev, ADF_DEVICE_LEGFUSE_OFFSET, &legfuses);
@@ -228,10 +229,15 @@ u32 adf_gen2_get_accel_cap(struct adf_accel_dev *accel_dev)
 		capabilities &= ~ICP_ACCEL_CAPABILITIES_AUTHENTICATION;
 		capabilities &= ~ICP_ACCEL_CAPABILITIES_CIPHER;
 	}
+	if (legfuses & ICP_ACCEL_MASK_COMPRESS_SLICE)
+		capabilities &= ~ICP_ACCEL_CAPABILITIES_COMPRESSION;
 
 	if ((straps | fuses) & ADF_POWERGATE_PKE)
 		capabilities &= ~ICP_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC;
 
+	if ((straps | fuses) & ADF_POWERGATE_DC)
+		capabilities &= ~ICP_ACCEL_CAPABILITIES_COMPRESSION;
+
 	return capabilities;
 }
 EXPORT_SYMBOL_GPL(adf_gen2_get_accel_cap);

drivers/crypto/qat/qat_common/adf_gen2_hw_data.h

@@ -113,6 +113,7 @@ do { \
 	(ADF_ARB_REG_SLOT * (index)), value)
 
 /* Power gating */
+#define ADF_POWERGATE_DC		BIT(23)
 #define ADF_POWERGATE_PKE		BIT(24)
 
 /* WDT timers

drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.c

@@ -69,6 +69,8 @@ static u32 get_accel_cap(struct adf_accel_dev *accel_dev)
 		capabilities &= ~ICP_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC;
 	if (legfuses & ICP_ACCEL_MASK_AUTH_SLICE)
 		capabilities &= ~ICP_ACCEL_CAPABILITIES_AUTHENTICATION;
+	if (legfuses & ICP_ACCEL_MASK_COMPRESS_SLICE)
+		capabilities &= ~ICP_ACCEL_CAPABILITIES_COMPRESSION;
 
 	return capabilities;
 }