crypto: qat - allow detection of dc capabilities for 4xxx

Add logic to allow the detection of data compression capabilities for
4xxx devices.
The capability detection logic has been refactored to separate the
crypto capabilities from the compression ones.

This patch is not updating the returned capability mask as, up to now,
4xxx devices are configured only to handle crypto operations.

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>

2 files changed, 44 insertions, 26 deletions

diff --git a/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c b/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c
index ef71aa4efd64..40f684103b29 100644
--- a/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c
+++ b/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c
@@ -96,46 +96,60 @@ static void set_msix_default_rttable(struct adf_accel_dev *accel_dev)
 static u32 get_accel_cap(struct adf_accel_dev *accel_dev)
 {
 	struct pci_dev *pdev = accel_dev->accel_pci_dev.pci_dev;
+	u32 capabilities_cy, capabilities_dc;
 	u32 fusectl1;
-	u32 capabilities = ICP_ACCEL_CAPABILITIES_CRYPTO_SYMMETRIC |
-			   ICP_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC |
-			   ICP_ACCEL_CAPABILITIES_CIPHER |
-			   ICP_ACCEL_CAPABILITIES_AUTHENTICATION |
-			   ICP_ACCEL_CAPABILITIES_SHA3 |
-			   ICP_ACCEL_CAPABILITIES_SHA3_EXT |
-			   ICP_ACCEL_CAPABILITIES_HKDF |
-			   ICP_ACCEL_CAPABILITIES_ECEDMONT |
-			   ICP_ACCEL_CAPABILITIES_CHACHA_POLY |
-			   ICP_ACCEL_CAPABILITIES_AESGCM_SPC |
-			   ICP_ACCEL_CAPABILITIES_AES_V2;
 
 	/* Read accelerator capabilities mask */
 	pci_read_config_dword(pdev, ADF_4XXX_FUSECTL1_OFFSET, &fusectl1);
 
+	capabilities_cy = ICP_ACCEL_CAPABILITIES_CRYPTO_SYMMETRIC |
+			  ICP_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC |
+			  ICP_ACCEL_CAPABILITIES_CIPHER |
+			  ICP_ACCEL_CAPABILITIES_AUTHENTICATION |
+			  ICP_ACCEL_CAPABILITIES_SHA3 |
+			  ICP_ACCEL_CAPABILITIES_SHA3_EXT |
+			  ICP_ACCEL_CAPABILITIES_HKDF |
+			  ICP_ACCEL_CAPABILITIES_ECEDMONT |
+			  ICP_ACCEL_CAPABILITIES_CHACHA_POLY |
+			  ICP_ACCEL_CAPABILITIES_AESGCM_SPC |
+			  ICP_ACCEL_CAPABILITIES_AES_V2;
+
 	/* A set bit in fusectl1 means the feature is OFF in this SKU */
 	if (fusectl1 & ICP_ACCEL_4XXX_MASK_CIPHER_SLICE) {
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_CRYPTO_SYMMETRIC;
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_HKDF;
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_CIPHER;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_CRYPTO_SYMMETRIC;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_HKDF;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_CIPHER;
 	}
 	if (fusectl1 & ICP_ACCEL_4XXX_MASK_UCS_SLICE) {
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_CHACHA_POLY;
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_AESGCM_SPC;
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_AES_V2;
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_CIPHER;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_CHACHA_POLY;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_AESGCM_SPC;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_AES_V2;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_CIPHER;
 	}
 	if (fusectl1 & ICP_ACCEL_4XXX_MASK_AUTH_SLICE) {
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_AUTHENTICATION;
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_SHA3;
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_SHA3_EXT;
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_CIPHER;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_AUTHENTICATION;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_SHA3;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_SHA3_EXT;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_CIPHER;
 	}
 	if (fusectl1 & ICP_ACCEL_4XXX_MASK_PKE_SLICE) {
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC;
-		capabilities &= ~ICP_ACCEL_CAPABILITIES_ECEDMONT;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC;
+		capabilities_cy &= ~ICP_ACCEL_CAPABILITIES_ECEDMONT;
+	}
+
+	capabilities_dc = ICP_ACCEL_CAPABILITIES_COMPRESSION |
+			  ICP_ACCEL_CAPABILITIES_LZ4_COMPRESSION |
+			  ICP_ACCEL_CAPABILITIES_LZ4S_COMPRESSION |
+			  ICP_ACCEL_CAPABILITIES_CNV_INTEGRITY64;
+
+	if (fusectl1 & ICP_ACCEL_4XXX_MASK_COMPRESS_SLICE) {
+		capabilities_dc &= ~ICP_ACCEL_CAPABILITIES_COMPRESSION;
+		capabilities_dc &= ~ICP_ACCEL_CAPABILITIES_LZ4_COMPRESSION;
+		capabilities_dc &= ~ICP_ACCEL_CAPABILITIES_LZ4S_COMPRESSION;
+		capabilities_dc &= ~ICP_ACCEL_CAPABILITIES_CNV_INTEGRITY64;
 	}
 
-	return capabilities;
+	return capabilities_cy;
 }
 
 static enum dev_sku_info get_sku(struct adf_hw_device_data *self)
diff --git a/drivers/crypto/qat/qat_common/icp_qat_hw.h b/drivers/crypto/qat/qat_common/icp_qat_hw.h
index 5770b2b2c09e..433304cad2ed 100644
--- a/drivers/crypto/qat/qat_common/icp_qat_hw.h
+++ b/drivers/crypto/qat/qat_common/icp_qat_hw.h
@@ -98,7 +98,11 @@ enum icp_qat_capabilities_mask {
 	ICP_ACCEL_CAPABILITIES_SHA3_EXT = BIT(15),
 	ICP_ACCEL_CAPABILITIES_AESGCM_SPC = BIT(16),
 	ICP_ACCEL_CAPABILITIES_CHACHA_POLY = BIT(17),
-	/* Bits 18-25 are currently reserved */
+	/* Bits 18-21 are currently reserved */
+	ICP_ACCEL_CAPABILITIES_CNV_INTEGRITY = BIT(22),
+	ICP_ACCEL_CAPABILITIES_CNV_INTEGRITY64 = BIT(23),
+	ICP_ACCEL_CAPABILITIES_LZ4_COMPRESSION = BIT(24),
+	ICP_ACCEL_CAPABILITIES_LZ4S_COMPRESSION = BIT(25),
 	ICP_ACCEL_CAPABILITIES_AES_V2 = BIT(26)
 };