This patch series enables the inline encryption capability of the UFS Host Controller. The Inline Encryption feature got considerable performance improvements over the SW algorithms and crypto accelarators that the crypto transformation on 512 bytes chunks in the device mapper layer can be avoided and bio can be submitted directly to the block device drivers which performs the encryption inline to hardware.
The UFS Host Controller driver detects the crypto capability in the HW during the init stage and registers an algorithm to the Linux Kernel Cryptography Framework(LKCF). The UFS HC has multiple key slots in the hardware for storing the keys, the crypto support manages these key slots in hardware. The Inline Encryption support also requires enhancements in the block layer for associating the crypto information to the individual block I/O requests. Separate patch is sent to the block layer community for the same. Configuration and usage of the Inline Encryption support for the Disk Encryption requires minor enhancement in the DM-Crypt subsystem. The I/O requests are submitted directly with the crypto information to the block level device drivers without actually performing the transformation in this layer. Separate patch is sent to the device mapper layer community for the same. The feature is tested and performance comparisions are done with Synopsys UFS Controller IP on Synopsys HAPS-70 FPGA-based Prototyping solution. Ladvine D Almeida (5): scsi: ufs: Add crypto source file for UFS HC driver scsi: ufs: Add crypto header file for UFS HC driver scsi: ufs: Add Kconfig for UFS HC driver crypto support scsi: ufs: Add crypto masks for UFS HC driver scsi: ufs: Add hooks in UFS HC driver for crypto support drivers/scsi/ufs/Kconfig | 15 ++ drivers/scsi/ufs/Makefile | 6 +- drivers/scsi/ufs/ufshcd-crypto.c | 520 +++++++++++++++++++++++++++++++++++++++ drivers/scsi/ufs/ufshcd-crypto.h | 156 ++++++++++++ drivers/scsi/ufs/ufshcd.c | 63 ++++- drivers/scsi/ufs/ufshcd.h | 29 +++ drivers/scsi/ufs/ufshci.h | 2 + 7 files changed, 784 insertions(+), 7 deletions(-) create mode 100644 drivers/scsi/ufs/ufshcd-crypto.c create mode 100644 drivers/scsi/ufs/ufshcd-crypto.h -- 2.7.4
