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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 X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2513; i=bartosz.golaszewski@linaro.org; h=from:subject:message-id; bh=idjNjWapj1bs0Ldu/9tHu9tyNyBC4AsG5ouabbctqz0=; b=owEBbQKS/ZANAwAKARGnLqAUcddyAcsmYgBm20Ta2lebndwd66b+zzmajpsSSPL4dPKl7vpCQ fPPf1aj/RCJAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCZttE2gAKCRARpy6gFHHX csEyD/9SVw5arcoptqwXkk4O3NKDnxuWvg9guPiq9pNQnUpUKOXHvzWg+kef98Vi3nGnKHIVql1 PySghu5/7BFDuGZxc6AaLEAZLyR4VXn9vIu/oodP9NThamajDDM3dcPKDGU18XrpVVNgdIBWpwJ 95E/G/00SezC3y7PtKO+JLO2RIAgvH7abFtQfIBVftiniLr30GhPbIjUCSi+7VFVCZaGQAdCJM3 4xsVf3WkMATBgMjSCYaSrB4rYNGbgbqbsy2XXmRehFumf4w1/DQGKAnuhNO9uODJen+ld3fLqjQ X7Bl5i1ojWc2/HgpPzwVroJJd0A8dUaInmUmVR26m0eLTILn73BPZJ3LE+4sn0YHascCQqHnyiG cqmjPHEFn54JnVnDfCBMS5liIRe8MFwkXbIciqoOiWAQsPtphpyXcrP1+qaQzkjnDq8aHyEtuiK MFRKNKF/MJytb1mGQW/vjKoAzuKvbyaHwzD/K2XUGuGJPRraYhKfb1hXyVJhb91Y3ueHPHTehy5 3hyFQlzT/uwITQ0skkksVB+/6ftCzZ4nsHglM8Agvrinhvv+8gTqBnjuZbGAFDBGK5UFyIlyoNZ 2SwUodqRrJXeW4BrTRIXAXM1xLD8mnHqr+P9TGVMfVazPwaEX5p46juHIT8HUpT35xlvH/RBvWB MAQ3AzPLJftzBdg== X-Developer-Key: i=bartosz.golaszewski@linaro.org; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Gaurav Kashyap Add a new UFS core callback for deriving software secrets from hardware wrapped keys and implement it in QCom UFS. Tested-by: Neil Armstrong Signed-off-by: Gaurav Kashyap Signed-off-by: Bartosz Golaszewski --- drivers/ufs/host/ufs-qcom.c | 15 +++++++++++++++ include/ufs/ufshcd.h | 1 + 2 files changed, 16 insertions(+) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 366fd62a951f..77fb5e66e4be 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -182,9 +182,23 @@ static int ufs_qcom_ice_program_key(struct ufs_hba *hba, return qcom_ice_evict_key(host->ice, slot); } +/* + * Derive a software secret from a hardware wrapped key. The key is unwrapped in + * hardware from trustzone and a software key/secret is then derived from it. + */ +static int ufs_qcom_ice_derive_sw_secret(struct ufs_hba *hba, const u8 wkey[], + unsigned int wkey_size, + u8 sw_secret[BLK_CRYPTO_SW_SECRET_SIZE]) +{ + struct ufs_qcom_host *host = ufshcd_get_variant(hba); + + return qcom_ice_derive_sw_secret(host->ice, wkey, wkey_size, sw_secret); +} + #else #define ufs_qcom_ice_program_key NULL +#define ufs_qcom_ice_derive_sw_secret NULL static inline void ufs_qcom_ice_enable(struct ufs_qcom_host *host) { @@ -1815,6 +1829,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = { .device_reset = ufs_qcom_device_reset, .config_scaling_param = ufs_qcom_config_scaling_param, .program_key = ufs_qcom_ice_program_key, + .derive_sw_secret = ufs_qcom_ice_derive_sw_secret, .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 c11dd3baf53c..b8b1763df022 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -323,6 +323,7 @@ struct ufs_pwr_mode_info { * @device_reset: called to issue a reset pulse on the UFS device * @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 * @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