From 4b44d28c715d3db2c8de1e4ec9ccfdf230001007 Mon Sep 17 00:00:00 2001

From: Giovanni Cabiddu <giovanni.cabiddu@intel.com>

Date: Thu, 16 Dec 2021 09:13:14 +0000

Subject: [PATCH] crypto: qat - extend crypto capability detection for 4xxx

Git-commit: 4b44d28c715d3db2c8de1e4ec9ccfdf230001007

Patch-mainline: v5.17-rc1

References: jsc#PED-1073

Extended the capability detection logic for 4xxx devices.

Mask out unsupported algorithms and services based on the value read in

the fuse register.

This includes only capabilities for the crypto service.

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>

Signed-off-by: Torsten Duwe <duwe@suse.de>

---

 .../crypto/qat/qat_4xxx/adf_4xxx_hw_data.c    | 29 +++++++++++++++++--

 drivers/crypto/qat/qat_common/icp_qat_hw.h    |  9 +++++-

 2 files changed, 34 insertions(+), 4 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 4658b7bf76da1..d320c50c4561c 100644

--- a/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c

+++ b/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c

@@ -98,18 +98,41 @@ static u32 get_accel_cap(struct adf_accel_dev *accel_dev)

 	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);

-	if (fusectl1 & ICP_ACCEL_4XXX_MASK_CIPHER_SLICE)

+	/* 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;

-	if (fusectl1 & ICP_ACCEL_4XXX_MASK_AUTH_SLICE)

+		capabilities &= ~ICP_ACCEL_CAPABILITIES_HKDF;

+		capabilities &= ~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;

+	}

+	if (fusectl1 & ICP_ACCEL_4XXX_MASK_AUTH_SLICE) {

 		capabilities &= ~ICP_ACCEL_CAPABILITIES_AUTHENTICATION;

-	if (fusectl1 & ICP_ACCEL_4XXX_MASK_PKE_SLICE)

+		capabilities &= ~ICP_ACCEL_CAPABILITIES_SHA3;

+		capabilities &= ~ICP_ACCEL_CAPABILITIES_SHA3_EXT;

+		capabilities &= ~ICP_ACCEL_CAPABILITIES_CIPHER;

+	}

+	if (fusectl1 & ICP_ACCEL_4XXX_MASK_PKE_SLICE) {

 		capabilities &= ~ICP_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC;

+		capabilities &= ~ICP_ACCEL_CAPABILITIES_ECEDMONT;

+	}

 	return capabilities;

 }

diff --git a/drivers/crypto/qat/qat_common/icp_qat_hw.h b/drivers/crypto/qat/qat_common/icp_qat_hw.h

index e39e8a2d51a73..5770b2b2c09e5 100644

--- a/drivers/crypto/qat/qat_common/icp_qat_hw.h

+++ b/drivers/crypto/qat/qat_common/icp_qat_hw.h

@@ -91,7 +91,14 @@ enum icp_qat_capabilities_mask {

 	ICP_ACCEL_CAPABILITIES_RAND = BIT(7),

 	ICP_ACCEL_CAPABILITIES_ZUC = BIT(8),

 	ICP_ACCEL_CAPABILITIES_SHA3 = BIT(9),

-	/* Bits 10-25 are currently reserved */

+	/* Bits 10-11 are currently reserved */

+	ICP_ACCEL_CAPABILITIES_HKDF = BIT(12),

+	ICP_ACCEL_CAPABILITIES_ECEDMONT = BIT(13),

+	/* Bit 14 is currently reserved */

+	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 */

 	ICP_ACCEL_CAPABILITIES_AES_V2 = BIT(26)

 };

-- 

2.35.3