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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=8izsipyIaDBdSDiSjvy9mf21cushU27meDYZO8QM7MY=; b=owEBbQKS/ZANAwAKARGnLqAUcddyAcsmYgBnCXRhwyf+sbRZiDFPfQnZmkfF4U7jfh05yXQav c1LkPJCdPeJAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCZwl0YQAKCRARpy6gFHHX cqB7D/95mHJd7lZyDeS8zmIiYEZFW6SUNcNDYRflN999g4QScsSRTKlq3MTcag3Ca8ltNUoJIug 39wPTbq1I/X4YXzUshJpgGyNrzQuSZLcNlz/0CdD8URU1pLkFmPyY4MiXpu3oh+NQ/o67QYtiMJ v43/AALUcHRtWLYflg1ZxUAqMPXsG4WK8RtjPxdauvJY1FKhOPEs3hhMpnrAsj5IIbHbot1IxOR 0eyjVtaIbciJa2EnmaMwjUIBNeIBG2O0p4NTSbIwyX3i+wqvemAx4yBWK+RyzKfrCaVhz6a8KcB ov8vJP4nCLNxST6gtuasJ1jiOpE+uqWjm5ec3TBerQiy8tVH/PvTI3EXKSCgacHeeyiF0vhe+ji wR4YvxwSm0y8XK+4lYYv2vOW/viQ4eF3IjxGR64O8g5P1z1OSIeSp2jJ0aTipkSh72yTCm2hMoy eoiYN+G9pZimXdoq1h3ouQz2PExiECAIYS/NE6bsZ3vihyhgExQ24oFpoAhGVPgeK8ma3ReFC2F g+9Iv64HG9yUE1X/w86/vby7nlQ32V464qHqdz7PdMJ3IzZLQCvDhAJCtyHC2iTc/Y5ZeJwfoL1 8lDEtDIK1LNhbGnL0ICafGD5S6YgALrTCClSAxesU0bMYwYiALDVzXhzi4R2slJHNHXjiN0WHRd 2IlGSJY+nTTII6w== 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 880df3a8955a..862e02bf8f64 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) { @@ -1832,6 +1846,7 @@ 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 d74a26a36f5b..c172c1dd9209 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