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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 01/15] scsi: ufs: add quirk to handle broken UIC command Date: Fri, 9 Jul 2021 15:56:57 +0900 Message-Id: <20210709065711.25195-2-chanho61.park@samsung.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210709065711.25195-1-chanho61.park@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNJsWRmVeSWpSXmKPExsWy7bCmuW7W5+cJBnOWGlicfLKGzeLBvG1s Fi9/XmWzmPbhJ7PFp/XLWC0u79e26NnpbHF6wiImiyfrZzFbLLqxjcli5TULi5tbjrJYzDi/ j8mi+/oONovlx/8xOfB7XL7i7XG5r5fJY/MKLY/Fe14yeWxa1cnmMWHRAUaPj09vsXj0bVnF 6PF5k5xH+4FupgCuqBybjNTElNQihdS85PyUzLx0WyXv4HjneFMzA0NdQ0sLcyWFvMTcVFsl F58AXbfMHKAXlBTKEnNKgUIBicXFSvp2NkX5pSWpChn5xSW2SqkFKTkFhoYFesWJucWleel6 yfm5VoYGBkamQJUJORkvJ85jKTjCW9G88CZTA+MM7i5GTg4JAROJS9fOM3YxcnEICexglDh1 ZDIThPOJUeL79MOsEM43RomeyctYYFpOP/7CDJHYyyixu+MzC4TzkVHi+fJJbCBVbAK6Elue vwIbLCLQzyixfP9csCpmgZPMEqcXHGQHqRIW8JCY8/AaWAeLgKrExkf9TCA2r4CdxPYHc9gh 9slLnFp2ECzOKWAvMe/HBKgaQYmTM5+A3cQMVNO8dTbYTRICRzgknl84DNXsIvFp6XZmCFtY 4tXxLVBxKYmX/W3sEA3djBKtj/5DJVYzSnQ2+kDY9hK/pm8BBgEH0AZNifW79EFMCQFliSO3 oPbySXQc/ssOEeaV6GgTgmhUlziwfTo0uGQluud8ZoWwPSSOnFkDFhcSmMQocWxt9QRGhVlI vpmF5JtZCHsXMDKvYhRLLSjOTU8tNiowQY7jTYzgVK3lsYNx9tsPeocYmTgYDzFKcDArifAa zXiWIMSbklhZlVqUH19UmpNafIjRFBjWE5mlRJPzgdkiryTe0NTIzMzA0tTC1MzIQkmcl4P9 UIKQQHpiSWp2ampBahFMHxMHp1QD0ynZbVOKd6Vu9J1t9iYve/ZP9VTXaQpKas7znhzW9LKI X6TwMkxlQi/LDf+suojcw0o/BSOc5xtrdElO2zHn8O/rk8Okwm+bvlvXxZ3barqJs9zxwyY+ 7dsTnR6ppd96vvrY4cKL+nzh//cLNh6KdKqbpit4LKqceV7Lj+dCBgo+fR/frb98tW/K5Hu3 NpZlmzFV59i478nty5w26efqVeKfgv6VbDqmsH3Gk8dbNF13XZ9bddBIJ7SkctWVDmM3xWT/ tgSJKw88sg8UeKvsffE19FfL5MCYJUV50j7TzzMYOV3qUvPxOZNWypfWMcf59qOcc063D/Kc 8blduTL2oOzcRJcNqW4XHvYtOXrfTYmlOCPRUIu5qDgRAOKEYsBeBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmphkeLIzCtJLcpLzFFi42LZdlhJXjfr8/MEg9WvmCxOPlnDZvFg3jY2 i5c/r7JZTPvwk9ni0/plrBaX92tb9Ox0tjg9YRGTxZP1s5gtFt3YxmSx8pqFxc0tR1ksZpzf x2TRfX0Hm8Xy4/+YHPg9Ll/x9rjc18vksXmFlsfiPS+ZPDat6mTzmLDoAKPHx6e3WDz6tqxi 9Pi8Sc6j/UA3UwBXFJdNSmpOZllqkb5dAlfGy4nzWAqO8FY0L7zJ1MA4g7uLkZNDQsBE4vTj L8xdjFwcQgK7GSW6jzUwQiRkJZ6928EOYQtL3G85wgpR9J5RYsbXm2BFbAK6EluevwKzRQQm MkosuScGUsQscJlZ4tu0K8wgCWEBD4k5D6+xgdgsAqoSGx/1M4HYvAJ2EtsfzIHaIC9xatlB sDingL3EvB8TwGwhoJp7G/axQ9QLSpyc+YQFxGYGqm/eOpt5AqPALCSpWUhSCxiZVjFKphYU 56bnFhsWGOallusVJ+YWl+al6yXn525iBEeUluYOxu2rPugdYmTiYDzEKMHBrCTCazTjWYIQ b0piZVVqUX58UWlOavEhRmkOFiVx3gtdJ+OFBNITS1KzU1MLUotgskwcnFINTDXPrspMl1es Nr1uyCNxc6743/CFAc1S/7vY1pzNf+B7pelh34ILK6fJNYo4GEjc+MLscGEds+TryaukVyrH a/6ycJ15T2iu19sIl2v+r14K/mvYdGN638rIJ3/CWP5ds3M2YE260/vY3E5bs/3q44pZvQ7P nGd+CuGYcY/pf0nzYkXvY5KN2Uu9Hzbq+lzcEqjeNulNyKlE+63ZD195f902sy/+068V/6u3 lpzjNPy377CsfGfPGbM5BQ3NV0uu/bjYeLe049LzrzaKFeWBqY/ufw26u2XFv4tC/6ML2bf8 eVY4LeG//ny3E/uTJk6QSLJQasxX23fsyInbbolr7Gfs/e4+89nJB2EaMV79/aeUWIozEg21 mIuKEwGGcAHyFwMAAA== X-CMS-MailID: 20210709065746epcas2p10d43898e863a873594f81f4a5a4f0ef2 X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20210709065746epcas2p10d43898e863a873594f81f4a5a4f0ef2 References: <20210709065711.25195-1-chanho61.park@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org From: jongmin jeong samsung ExynosAuto9 SoC has two types of host controller interface to support the virtualization of UFS Device. One is the physical host(PH) that the same as conventaional UFSHCI, and the other is the virtual host(VH) that support data transfer function only. In this structure, the virtual host does not support UIC command. To support this, we add the quirk and return 0 when the UIC command send function is called. Signed-off-by: jongmin jeong Signed-off-by: Chanho Park --- drivers/scsi/ufs/ufshcd.c | 3 +++ drivers/scsi/ufs/ufshcd.h | 6 ++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index b87ff68aa9aa..9702086e9860 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -2350,6 +2350,9 @@ int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd) int ret; unsigned long flags; + if (hba->quirks & UFSHCD_QUIRK_BROKEN_UIC_CMD) + return 0; + ufshcd_hold(hba, false); mutex_lock(&hba->uic_cmd_mutex); ufshcd_add_delay_before_dme_cmd(hba); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index c98d540ac044..e67b1fcfe1a2 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -567,6 +567,12 @@ enum ufshcd_quirks { * This quirk allows only sg entries aligned with page size. */ UFSHCD_QUIRK_ALIGN_SG_WITH_PAGE_SIZE = 1 << 14, + + /* + * This quirk needs to be enabled if the host controller does not + * support UIC command + */ + UFSHCD_QUIRK_BROKEN_UIC_CMD = 1 << 15, }; enum ufshcd_caps {