From 547bde7bd4ecd78f36f98744e6c9a0999e52da5a Mon Sep 17 00:00:00 2001
From: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Date: Thu, 16 Dec 2021 09:13:12 +0000
Subject: [PATCH] crypto: qat - set CIPHER capability for QAT GEN2
Git-commit: 547bde7bd4ecd78f36f98744e6c9a0999e52da5a
Patch-mainline: v5.17-rc1
References: jsc#PED-1073
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: 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>
---
drivers/crypto/qat/qat_common/adf_gen2_hw_data.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/crypto/qat/qat_common/adf_gen2_hw_data.c b/drivers/crypto/qat/qat_common/adf_gen2_hw_data.c
index 3b48fdaaff6d5..3ea26f2f4a226 100644
--- a/drivers/crypto/qat/qat_common/adf_gen2_hw_data.c
+++ b/drivers/crypto/qat/qat_common/adf_gen2_hw_data.c
@@ -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;
--
2.35.3