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J . Bottomley" , "Martin K . Petersen" , Krzysztof Kozlowski Cc: Bean Huo , Bart Van Assche , Adrian Hunter , Christoph Hellwig , Can Guo , Jaegeuk Kim , Gyunghoon Kwon , linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, Chanho Park Subject: [PATCH v3 00/17] introduce exynosauto v9 ufs driver Date: Fri, 17 Sep 2021 15:54:19 +0900 Message-Id: <20210917065436.145629-1-chanho61.park@samsung.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrJJsWRmVeSWpSXmKPExsWy7bCmme5ta5dEg8XfZS1OPlnDZvFg3jY2 i5c/r7JZHHzYyWIx7cNPZotP65exWlzer23Rs9PZ4vSERUwWT9bPYrZYdGMbk8XGtz+YLGac 38dk0X19B5vF8uP/mBz4PS5f8faY1dDL5nG5r5fJY/MKLY/Fe14yeWxa1cnmMWHRAUaP7+s7 2Dw+Pr3F4tG3ZRWjx+dNch7tB7qZAniicmwyUhNTUosUUvOS81My89JtlbyD453jTc0MDHUN LS3MlRTyEnNTbZVcfAJ03TJzgL5RUihLzCkFCgUkFhcr6dvZFOWXlqQqZOQXl9gqpRak5BQY GhboFSfmFpfmpesl5+daGRoYGJkCVSbkZCzbnVuwWrXievdRpgbG6bJdjJwcEgImEqufNLJ1 MXJxCAnsYJR4MOUjO4TziVHi8axbUJnPjBIzl95lg2k5tOotVGIXo8SHDZuYIJyPjBILTlxl AqliE9CV2PL8FSNIQkTgPaPEk8dTwAYzC3xlkth98DvYLGEBG4mFt3aygNgsAqoSzSf+gHXz CthLPJnYygixT17iyK9OZoi4oMTJmU/A6pmB4s1bZzODDJUQ2MMh0ffxFDtEg4vEnKkNTBC2 sMSr41ug4lISn9/tZYNo6GaUaH30HyqxmlGis9EHwraX+DV9C2sXIwfQBk2J9bv0QUwJAWWJ I7eg9vJJdBz+yw4R5pXoaBOCaFSXOLB9OguELSvRPeczK4TtIfHl32awRUICsRLX1x5jnMAo PwvJN7OQfDMLYe8CRuZVjGKpBcW56anFRgUmyNG6iRGcprU8djDOfvtB7xAjEwfjIUYJDmYl Ed4LNY6JQrwpiZVVqUX58UWlOanFhxhNgeE7kVlKNDkfmCnySuINTY3MzAwsTS1MzYwslMR5 5/5zShQSSE8sSc1OTS1ILYLpY+LglGpgCm3cp/Tk+7FJV2ofvVbK3h7QvyKO4eelx39FH76y 61nTvFGsUG2L4bpbHGtW/A1l8A5ivZAaqdnX5m7QYXdI1Vvuorh7+QVzx2JN1ocVDssT3qaJ P1wZYqeixujby8RU9tTewHObxefr3wN/zeJKbq+aZ/WjU049Yf75gq4Cz97QV1F57V68Pjax v3KPzKhXOn/jsN3ivQkaUibTJ9p6Bnvw3Sto2FmdVeZu39VwiHlv5rbOVdm7y/k6rhWU3d8n t6J6c7Vo8hfOqr03+qew+Z+Ylvii84OtLLvKbGvDY5X2KgqakTGnlr+b4tK4s62tO0nz3ULf bTOdQv1FlNZ83nW+7ZZ9Yfu/NJ7PPkosxRmJhlrMRcWJABDluuZcBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrGLMWRmVeSWpSXmKPExsWy7bCSvO4ta5dEg7cX5CxOPlnDZvFg3jY2 i5c/r7JZHHzYyWIx7cNPZotP65exWlzer23Rs9PZ4vSERUwWT9bPYrZYdGMbk8XGtz+YLGac 38dk0X19B5vF8uP/mBz4PS5f8faY1dDL5nG5r5fJY/MKLY/Fe14yeWxa1cnmMWHRAUaP7+s7 2Dw+Pr3F4tG3ZRWjx+dNch7tB7qZAniiuGxSUnMyy1KL9O0SuDKW7c4tWK1acb37KFMD43TZ LkZODgkBE4lDq96ydTFycQgJ7GCUeHZ2DytEQlbi2bsd7BC2sMT9liOsEEXvGSVuNc5kAUmw CehKbHn+ihHEFhH4yCgx55sWSBGzwF8midbWDUwgCWEBG4mFt3aCNbAIqEo0n/gDFucVsJd4 MrGVEWKDvMSRX53MEHFBiZMzn4DVMwPFm7fOZp7AyDcLSWoWktQCRqZVjJKpBcW56bnFhgVG eanlesWJucWleel6yfm5mxjBUaOltYNxz6oPeocYmTgYDzFKcDArifBeqHFMFOJNSaysSi3K jy8qzUktPsQozcGiJM57oetkvJBAemJJanZqakFqEUyWiYNTqoEph5nref6Tr4c2zZK9p75+ Sriif5HF7vOnbMWlNk5fdsqggmlZ/Lbrf2S7fVMfKH3UZLqxewLrP///0qam7iFneL4aGb/5 MVN5peKzwN6eo7pPFk7e9ZTdNz3o1vmieTpKc9qvHTp1+VdB+KqPW7bWbtG9uG/FLaHkU7Ll NrN+pn5qmcv4WeHZ/1UPDDuu/11/8bdj4PJdSxcru4TP85nbIrJA8Ty70bOHAibtk84+SXnh pLir65pP87GrMc95F5TUzLkf+3axKsdtj7d7Cjg8rjwKtti2YuLnboVNS7gVfCY+l6grKRBn 3vNpmdLkwsYNEinfqlbVuOkFZSQVzI5R2nY2a9e3PfUL72b+WceQfkqJpTgj0VCLuag4EQDe xPJlCQMAAA== X-CMS-MailID: 20210917065522epcas2p2c9c7baccfc82b3798804c351dbf676eb X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20210917065522epcas2p2c9c7baccfc82b3798804c351dbf676eb References: Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org In ExynosAuto(variant of the Exynos for automotive), the UFS Storage needs to be accessed from multi-OS. To increase IO performance and reduce SW complexity, we implemented UFS-IOV to support storage IO virtualization feature on UFS. IO virtualization increases IO performance and reduce SW complexity with small area cost. And IO virtualization supports virtual machine isolation for Security and Safety which are requested by Multi-OS system such as automotive application. Below figure is the conception of UFS-IOV architeture. +------+ +------+ | OS#1 | | OS#2 | +------+ +------+ | | +------------+ +------------+ | Physical | | Virtual | | Host | | Host | +------------+ +------------+ | | | <-- UTP_CMD_SAP, UTP_TM_SAP | +-------------------------+ | | Function Arbitor | | +-------------------------+ +-------------------------------+ | UTP Layer | +-------------------------------+ +-------------------------------+ | UIC Layer | +-------------------------------+ There are two types of host controllers on the UFS host controller that we designed. The UFS device has a Function Arbitor that arranges commands of each host. When each host transmits a command to the Arbitor, the Arbitor transmits it to the UTP layer. Physical Host(PH) support all UFSHCI functions(all SAPs) same as conventional UFSHCI. Virtual Host(VH) support only data transfer function(UTP_CMD_SAP and UTP_TM_SAP). In an environment where multiple OSs are used, the OS that has the leadership of the system is called System OS(Dom0). This system OS uses PH and controls error handling. Since VH can only use less functions than PH, it is necessary to send a request to PH for Detected Error Handling in VH. To interface among PH and VHs, UFSHCI HW supports mailbox. PH can broadcast mail to other VH at the same time with arguments and VH can mail to PH with arguments. PH and VH generate interrupts when mails from PH or VH. In this structure, the virtual host can't support some feature and need to skip the some part of ufshcd code by using quirk. This patchs add quirks so that the UIC command is ignored and the ufshcd init process can be skipped for VH. Also, according to our UFS-IOV policy, First two patches, I picked them up from Jonmin's patchset[1] and the third patch has been dropped because we need to check it again. [1]: https://lore.kernel.org/linux-scsi/20210527030901.88403-1-jjmin.jeong@samsung.com/ Patch 0003 ~ 0013, they are changes of exynos7 ufs driver to apply exynosauto v9 variant and PH/VH capabilities. Patch 0014 ~ 0017, the patches introduce exynosauto v9 ufs MHCI which includes PH and VH. Changes from v2: - Separate dt-binding patches on top of https://lore.kernel.org/linux-devicetree/YUNdqnZ2kYefxFUC@robh.at.kernel.org/ Changes from v1: - Change quirk name from UFSHCD_QUIRK_SKIP_INTERFACE_CONFIGURATION to UFSHCD_QUIRK_SKIP_PH_CONFIGURATION - Add compatibles to Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml on top of https://lore.kernel.org/linux-scsi/20200613024706.27975-9-alim.akhtar@samsung.com/ Chanho Park (15): scsi: ufs: ufs-exynos: change pclk available max value scsi: ufs: ufs-exynos: simplify drv_data retrieval dt-bindings: ufs: exynos-ufs: add sysreg regmap property scsi: ufs: ufs-exynos: get sysreg regmap for io-coherency scsi: ufs: ufs-exynos: add refclkout_stop control scsi: ufs: ufs-exynos: add setup_clocks callback scsi: ufs: ufs-exynos: correct timeout value setting registers scsi: ufs: ufs-exynos: support custom version of ufs_hba_variant_ops scsi: ufs: ufs-exynos: add EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR option scsi: ufs: ufs-exynos: factor out priv data init scsi: ufs: ufs-exynos: add pre/post_hce_enable drv callbacks scsi: ufs: ufs-exynos: support exynosauto v9 ufs driver scsi: ufs: ufs-exynos: multi-host configuration for exynosauto scsi: ufs: ufs-exynos: introduce exynosauto v9 virtual host dt-bindings: ufs: exynos-ufs: add exynosautov9 compatible jongmin jeong (2): scsi: ufs: add quirk to handle broken UIC command scsi: ufs: add quirk to enable host controller without ph configuration .../bindings/ufs/samsung,exynos-ufs.yaml | 7 + drivers/scsi/ufs/ufs-exynos.c | 318 ++++++++++++++++-- drivers/scsi/ufs/ufs-exynos.h | 10 +- drivers/scsi/ufs/ufshcd.c | 6 + drivers/scsi/ufs/ufshcd.h | 12 + 5 files changed, 327 insertions(+), 26 deletions(-) -- 2.33.0