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crypto: qat - extend crypto capability detection for 4xxx

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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>
This commit is contained in:
Giovanni Cabiddu 2021-12-16 09:13:14 +00:00 committed by Herbert Xu
parent cfe4894ecc
commit 4b44d28c71
2 changed files with 34 additions and 4 deletions
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29
drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c
View File

@ -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;
}

9
drivers/crypto/qat/qat_common/icp_qat_hw.h
View File

@ -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)
};