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J . Bottomley" , "Martin K . Petersen" Cc: Can Guo , Jaegeuk Kim , Kiwoong Kim , Avri Altman , Adrian Hunter , Christoph Hellwig , Bart Van Assche , jongmin jeong , Gyunghoon Kwon , linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, Chanho Park Subject: [PATCH v2 00/15] introduce exynosauto v9 ufs driver Date: Wed, 14 Jul 2021 16:11:16 +0900 Message-Id: <20210714071131.101204-1-chanho61.park@samsung.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrCJsWRmVeSWpSXmKPExsWy7bCmua5937sEg3n/1S1OPlnDZvFg3jY2 i5c/r7JZTPvwk9ni0/plrBaX92tb9Ox0tjg9YRGTxZP1s5gtFt3YxmSx8pqFxfnzG9gtbm45 ymIx4/w+Jovu6zvYLJYf/8fkIOBx+Yq3x+W+XiaPzSu0PBbvecnksWlVJ5vHhEUHGD0+Pr3F 4tG3ZRWjx+dNch7tB7qZAriicmwyUhNTUosUUvOS81My89JtlbyD453jTc0MDHUNLS3MlRTy EnNTbZVcfAJ03TJzgP5QUihLzCkFCgUkFhcr6dvZFOWXlqQqZOQXl9gqpRak5BQYGhboFSfm Fpfmpesl5+daGRoYGJkCVSbkZBybfoatYK5yxbGJexgbGNdLdzFyckgImEj0vpnB1sXIxSEk sINRYvfFw6wQzidGid9fJzNCON8YJc6s28MM03Js20GoxF5GibmrF7FDOB8ZJeZNvwtWxSag K7Hl+SuwKhGQwasW32UBcZgFTjJLnF5wkB2kSljARmL7gbdgHSwCqhJTZq1hArF5Bewl3t08 ywaxT17i1LKDUHFBiZMzn7CA2MxA8eats5lBhkoIrOWQaL22lAmiwUXiwJrJUM3CEq+Ob2GH sKUkPr/bywbR0M0o0froP1RiNaNEZ6MPhG0v8Wv6FmAYcABt0JRYv0sfxJQQUJY4cgtqL59E x+G/7BBhXomONiGIRnWJA9uns0DYshLdcz6zQtgeEkvW7wZ7UUggVmL5zr/MExjlZyH5ZhaS b2Yh7F3AyLyKUSy1oDg3PbXYqMAQOV43MYKTs5brDsbJbz/oHWJk4mA8xCjBwawkwrvU6G2C EG9KYmVValF+fFFpTmrxIUZTYPhOZJYSTc4H5oe8knhDUyMzMwNLUwtTMyMLJXFeDvZDCUIC 6YklqdmpqQWpRTB9TBycUg1MFzYEXuN4dXcf40yPD/pLllaWXQ54kBjM6tw+Z7fsRof4NcVM ZzqK7pekyu99u2U+7y4l5fB91tybndMDjLfZX/jaePjNjxvM2prtusWi7x4X7Ja7s/iZ/SqF Ms7HOxZz7mBcIGhpUviItbskSfbak8mLD0U7Nug6b13felukc1HozGkrfttGVherMdxSl7wV k8660qpuZ8kXoeTMx2rHpVQ6Jkkee/yu4uGsTXHXd/6YfYHhzX1L5eVVK1QS/q1SOR4XyBOz fNnCItGlagr3vEMy1k6PLK4I2NLldFbu+jT5o3en2HTOmilSmHJBd/GelYtkFj3nmDP7sLXm 9R+LjzYsCWKUmcBf2n+9jaXpsBJLcUaioRZzUXEiACRNcXZXBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrELMWRmVeSWpSXmKPExsWy7bCSvK5d37sEg9UfVS1OPlnDZvFg3jY2 i5c/r7JZTPvwk9ni0/plrBaX92tb9Ox0tjg9YRGTxZP1s5gtFt3YxmSx8pqFxfnzG9gtbm45 ymIx4/w+Jovu6zvYLJYf/8fkIOBx+Yq3x+W+XiaPzSu0PBbvecnksWlVJ5vHhEUHGD0+Pr3F 4tG3ZRWjx+dNch7tB7qZAriiuGxSUnMyy1KL9O0SuDKOTT/DVjBXueLYxD2MDYzrpbsYOTkk BEwkjm07yNjFyMUhJLCbUWLih15miISsxLN3O9ghbGGJ+y1HWCGK3jNKfFu/CKyITUBXYsvz V2DdIgK7GCUOnznMDuIwC1xmlvg27QpYlbCAjcT2A2/BbBYBVYkps9Ywgdi8AvYS726eZYNY IS9xatlBqLigxMmZT1hAbGagePPW2cwTGPlmIUnNQpJawMi0ilEytaA4Nz232LDAMC+1XK84 Mbe4NC9dLzk/dxMjOFq0NHcwbl/1Qe8QIxMH4yFGCQ5mJRHepUZvE4R4UxIrq1KL8uOLSnNS iw8xSnOwKInzXug6GS8kkJ5YkpqdmlqQWgSTZeLglGpgmmzAtiFlQcwmuZ/6sQbFDasU9c7O 768WeLnQI8vHxK+o+EyH4/MWlSXXpNOu/bJvUhYOf9a5R8tjVlZ4uXf8TH6hHLfeHVHCqt8a BesE3pYtSbFzFgy43B6WGjQ78NgniUV31p096fbMJv3DH3elT5U/pP++kpxmLp7p8/hUPUNn wqNW4x0bD+3/yavUVNXUcvRjSvweUaWDjldNF3DL9ccmntuzdJbhzjvzPZontr9N/q+5w+XY 6crQjlvfNZb7zVj84Z/S3RfPJ9YeCCjwfh3672+IQf+WOem3lj7l3WFaEbbxf7W9bsP9uLWH i1dwOZUqnjzyW7Vzhco84fojb+4v/6HncCtI8266fv4uJZbijERDLeai4kQAWXsFvQUDAAA= X-CMS-MailID: 20210714071158epcas2p1a7b98fd67b9bcaaa634e59fc224761b1 X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20210714071158epcas2p1a7b98fd67b9bcaaa634e59fc224761b1 References: Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@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 ~ 0012, they are changes of exynos7 ufs driver to apply exynosauto v9 variant and PH/VH capabilities. Patch 0013 ~ 0015, they introduce exynosauto v9 ufs MHCI which includes PH and VH. 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 (13): scsi: ufs: ufs-exynos: change pclk available max value scsi: ufs: ufs-exynos: simplify drv_data retrieval 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 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(-)