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Bottomley" , "Martin K. Petersen" , Eric Biggers , "Theodore Y. Ts'o" , Jaegeuk Kim , Alexander Viro , Christian Brauner , Jan Kara , Bjorn Andersson , Konrad Dybcio , Manivannan Sadhasivam , Dmitry Baryshkov , Gaurav Kashyap , Neil Armstrong Cc: linux-block@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, dm-devel@lists.linux.dev, linux-mmc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-fscrypt@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Bartosz Golaszewski , Om Prakash Singh X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=4227; i=bartosz.golaszewski@linaro.org; h=from:subject:message-id; bh=7z0AVztT5cMGpKL1HOXiPwLEES90yGUwCX8SCOsuW3M=; b=owEBbQKS/ZANAwAKARGnLqAUcddyAcsmYgBnCXRh2LQ7bAQ7CKxS1EQC/uEajCQAo6Z5GLJTK XdDvQt2bvmJAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCZwl0YQAKCRARpy6gFHHX cmERD/9iIKvoDWCKjog0/bhMPZvD8+KwCdCudAqeJomfaC53GCIhB55GfJB9IvaqB7GITu6o1Hx pB5Owey9Mczn/fnrP3IBnkT+ExpEg9S0RC9B7kKDlO+0D8t1FdWgX/PPa0p3OTAugqOGEbMr+tO ywY3a+9yf3oNvwMlLIbiElfE5apx4PoQMJmVV0gDsM+/FfSm+1vg98FxuVm6yTBkL5Pul1toJX2 0ToHYVD7S3IR6DVI9H/prAY3LZhhqlZQLrCempZWfJxqHsUpEihJGnWXTz0MNXnuaiu/uJBsOw+ 6+IdZp8u6u94M8jOIZRB3+ZYstukyF0mnse2DFOuOfMd09VFMSeJIPjbPxaeDhvdGR7Vjl3AfeH Y2n40Ca84gGNZRQH0Ug2Rov4BuUUZoD/LVBFEqOr/cgfcWK34hLQrwC53XoApnxq5nQl5aME7Ix i+LGaZaNxEz/WFZKcZU+jAShzzR7brXh9zYAD2eAKFJKMX6sKIgH/VlVl3r20q9d4HyHRZf1VZF xafLajzlgytdG5AzMClH3QVbQg6YwarQka35XEEtDzbkErocGzKHTPdOnjj594AcGvDNFOMs1pm YaNP7GGIBf9XLF9Pue0N/T+Rru1jQtTwt420hOPlUAFhVlbHoWbmwmfdPNgOla5U4c6iXvZSrZk aADVpm6/ZZMgxrQ== X-Developer-Key: i=bartosz.golaszewski@linaro.org; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Gaurav Kashyap Extend the UFS core ops to include callbacks for generating, importing and prepating HW wrapped keys using the lower-level block crypto operations and implement them for QCom UFS. Reviewed-by: Om Prakash Singh Tested-by: Neil Armstrong Signed-off-by: Gaurav Kashyap Signed-off-by: Bartosz Golaszewski --- drivers/ufs/host/ufs-qcom.c | 34 ++++++++++++++++++++++++++++++++++ include/ufs/ufshcd.h | 11 +++++++++++ 2 files changed, 45 insertions(+) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 862e02bf8f64..180e13a44b36 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -195,10 +195,41 @@ static int ufs_qcom_ice_derive_sw_secret(struct ufs_hba *hba, const u8 wkey[], return qcom_ice_derive_sw_secret(host->ice, wkey, wkey_size, sw_secret); } +static int ufs_qcom_ice_generate_key(struct ufs_hba *hba, + u8 lt_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]) +{ + struct ufs_qcom_host *host = ufshcd_get_variant(hba); + + return qcom_ice_generate_key(host->ice, lt_key); +} + +static int ufs_qcom_ice_prepare_key(struct ufs_hba *hba, + const u8 *lt_key, size_t lt_key_size, + u8 eph_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]) +{ + struct ufs_qcom_host *host = ufshcd_get_variant(hba); + + return qcom_ice_prepare_key(host->ice, lt_key, lt_key_size, + eph_key); +} + +static int ufs_qcom_ice_import_key(struct ufs_hba *hba, + const u8 *imp_key, size_t imp_key_size, + u8 lt_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]) +{ + struct ufs_qcom_host *host = ufshcd_get_variant(hba); + + return qcom_ice_import_key(host->ice, imp_key, imp_key_size, + lt_key); +} + #else #define ufs_qcom_ice_program_key NULL #define ufs_qcom_ice_derive_sw_secret NULL +#define ufs_qcom_ice_generate_key NULL +#define ufs_qcom_ice_prepare_key NULL +#define ufs_qcom_ice_import_key NULL static inline void ufs_qcom_ice_enable(struct ufs_qcom_host *host) { @@ -1847,6 +1878,9 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = { .config_scaling_param = ufs_qcom_config_scaling_param, .program_key = ufs_qcom_ice_program_key, .derive_sw_secret = ufs_qcom_ice_derive_sw_secret, + .generate_key = ufs_qcom_ice_generate_key, + .prepare_key = ufs_qcom_ice_prepare_key, + .import_key = ufs_qcom_ice_import_key, .reinit_notify = ufs_qcom_reinit_notify, .mcq_config_resource = ufs_qcom_mcq_config_resource, .get_hba_mac = ufs_qcom_get_hba_mac, diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index c172c1dd9209..c52acb486688 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -324,6 +324,9 @@ struct ufs_pwr_mode_info { * @config_scaling_param: called to configure clock scaling parameters * @program_key: program or evict an inline encryption key * @derive_sw_secret: derive sw secret from a wrapped key + * @generate_key: generate a storage key and return longterm wrapped key + * @prepare_key: unwrap longterm key and return ephemeral wrapped key + * @import_key: import sw storage key and return longterm wrapped key * @fill_crypto_prdt: initialize crypto-related fields in the PRDT * @event_notify: called to notify important events * @reinit_notify: called to notify reinit of UFSHCD during max gear switch @@ -376,6 +379,14 @@ struct ufs_hba_variant_ops { int (*derive_sw_secret)(struct ufs_hba *hba, const u8 wkey[], unsigned int wkey_size, u8 sw_secret[BLK_CRYPTO_SW_SECRET_SIZE]); + int (*generate_key)(struct ufs_hba *hba, + u8 lt_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]); + int (*prepare_key)(struct ufs_hba *hba, + const u8 *lt_key, size_t lt_key_size, + u8 eph_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]); + int (*import_key)(struct ufs_hba *hba, + const u8 *imp_key, size_t imp_key_size, + u8 lt_key[BLK_CRYPTO_MAX_HW_WRAPPED_KEY_SIZE]); int (*fill_crypto_prdt)(struct ufs_hba *hba, const struct bio_crypt_ctx *crypt_ctx, void *prdt, unsigned int num_segments);