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Sat, 5 Sep 2020 15:15:49 +0900 (KST) Received: from ubuntu.dsn.sec.samsung.com (unknown [12.36.155.120]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20200905061549epsmtip1ea7875d68d86142d54fa934adabdd9f7~xzqS9l43-1143111431epsmtip1P; Sat, 5 Sep 2020 06:15:49 +0000 (GMT) From: Kiwoong Kim To: linux-scsi@vger.kernel.org, alim.akhtar@samsung.com, avri.altman@wdc.com, jejb@linux.ibm.com, martin.petersen@oracle.com, beanhuo@micron.com, asutoshd@codeaurora.org, cang@codeaurora.org, bvanassche@acm.org, grant.jung@samsung.com, sc.suh@samsung.com, hy50.seo@samsung.com, sh425.lee@samsung.com Cc: Kiwoong Kim Subject: [PATCH v4 1/2] ufs: introduce skipping manual flush for wb Date: Sat, 5 Sep 2020 15:06:51 +0900 Message-Id: <3cf3e93696510922b775d8887ca8408dd384648b.1599285983.git.kwmad.kim@samsung.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: In-Reply-To: X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprFJsWRmVeSWpSXmKPExsWy7bCmqa6YbnC8wf4p0hYP5m1js9jbdoLd 4uXPq2wWBx92slhM+/CT2eLT+mWsFr/+rme3WL34AYvFohvbmCxubjnKYtF9fQebxfLj/5gs uu7eYLRY+u8tiwOfx+Ur3h6X+3qZPCYsOsDo8X19B5vHx6e3WDz6tqxi9Pi8Sc6j/UA3UwBH VI5NRmpiSmqRQmpecn5KZl66rZJ3cLxzvKmZgaGuoaWFuZJCXmJuqq2Si0+ArltmDtDdSgpl iTmlQKGAxOJiJX07m6L80pJUhYz84hJbpdSClJwCQ8MCveLE3OLSvHS95PxcK0MDAyNToMqE nIzHHy4wFVzkrfh+YxVLA+N27i5GTg4JAROJ85O2soHYQgI7GCWev87tYuQCsj8xSmyddIId wvkM5Nzdyw7TMfXVDVaIxC5GieY1BxkhnB+MEjP7XjGBVLEJaEo8vTmVCSQhIrCZSeLVgvvM IAlmAXWJXRNOgBUJCzhLLFxwDCzOIqAqMenNKrBDeAWiJT69XsgGsU5O4ua5TrAaTgFLiW+d q9lQ2VxANRM5JG6t3gM0lAPIcZFYPd0ToldY4tXxLVBnS0m87G+Dsusl9k1tYIXo7WGUeLrv HyNEwlhi1rN2RpA5zEAfrN+lDzFSWeLILRaI8/kkOg7/ZYcI80p0tAlBNCpL/Jo0GWqIpMTM m3egNnlIXP5+Fxo+QJuWrtrCOIFRfhbCggWMjKsYxVILinPTU4uNCoyQY28TIziRarntYJzy 9oPeIUYmDsZDjBIczEoivB7nAuOFeFMSK6tSi/Lji0pzUosPMZoCw3Eis5Rocj4wleeVxBua GpmZGViaWpiaGVkoifPWK16IExJITyxJzU5NLUgtgulj4uCUamByeKIVs+h1m9s/hnnWfVry W5vm3+CevuHeAxbf/A8H2hv3z4lp+G3ws3yHEq+1aly7jVHDp3Mntf4enBl7+cNm/oAzxveD j5bOYtE+uV1SVeChzdkP+ak5TVaPluYveTLPauLitxIh1p6epVYzBRwE263YFOI40ytFll7e 9TTIzb15z9siyw1b5O8kPnzt3SVhLn3Uyj9t6Wl9a+Ynr6yZSuoSGFuuO1bOMjfyjvloWcjm cdT76JYjrvPizikyTb53NOru5w8Hck/5m5cJPHBLl8z4KRxjkPErpz1q8pWCR5s75csm8WTs PaEzMXF9m79zScb+M++0Ww1vRjCFfVh8ZR9v7UI37S2xastMhZRYijMSDbWYi4oTAcwGrZYt BAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrPLMWRmVeSWpSXmKPExsWy7bCSnK6obnC8Qfs1PYsH87axWextO8Fu 8fLnVTaLgw87WSymffjJbPFp/TJWi19/17NbrF78gMVi0Y1tTBY3txxlsei+voPNYvnxf0wW XXdvMFos/feWxYHP4/IVb4/Lfb1MHhMWHWD0+L6+g83j49NbLB59W1YxenzeJOfRfqCbKYAj issmJTUnsyy1SN8ugSvj8YcLTAUXeSu+31jF0sC4nbuLkZNDQsBEYuqrG6xdjFwcQgI7GCXu LJ7OCJGQlDix8zmULSxxv+UIVNE3RonjN5eCJdgENCWe3pzKBJIQETjMJPF/63N2kASzgLrE rgknmEBsYQFniYULjjGD2CwCqhKT3qxiA7F5BaIlPr1eyAaxQU7i5rlOsBpOAUuJb52rgeIc QNssJD4+UcUhPIFRYAEjwypGydSC4tz03GLDAqO81HK94sTc4tK8dL3k/NxNjOA40NLawbhn 1Qe9Q4xMHIyHGCU4mJVEeD3OBcYL8aYkVlalFuXHF5XmpBYfYpTmYFES5/06a2GckEB6Yklq dmpqQWoRTJaJg1OqgWl7jWXnrATXDdzO1xpn7KhLa/cW1H5Q0XYtWPhOw1/DkhvOrw+vN/yq s06tKc5T5rSYekJUqm7GxducpZNst5m+8QltrFk59wTTma6NUTr3U54I/JlhnrVJnceNUUr7 ycZaq+NLje/Ommd/8lTO5AkTgmx0PSp/9/ybdXhdZ/lWq2k1stVf3qn23r8yS3i17AHxZauV /Xil5O9zfP6reVNLzK22KbT0rJfTcYPixS4x6/kdDnUI3+i5xN/7X8DLeVpI5aqzkly3pXZl B3Gf4RUv+ynsm27HYvcw3Js73C1ubfYJJ0GpKhNv7rVn5TnvC4jwJyjfvqZRtob/WIYN/5I4 neje90HaB6t6jRWVWIozEg21mIuKEwGJkWqb8gIAAA== X-CMS-MailID: 20200905061549epcas2p3e3554be6bb9737f3133529ebac4ce99a 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: 20200905061549epcas2p3e3554be6bb9737f3133529ebac4ce99a References: Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org We have two knobs to flush for write booster, i.e. fWriteBoosterBufferFlushDuringHibernate and fWriteBoosterBufferFlushEn. However, many product makers uses only fWriteBoosterBufferFlushDuringHibernate, because this can reportedly cover most scenarios and there have been some reports that flush by fWriteBoosterBufferFlushEn could lead to raise power consumption thanks to unexpected internal operations. So we need a way to enable or disable fWriteBoosterEn operations. For those case, this quirk will allow to avoid manual flush Signed-off-by: Kiwoong Kim Reviewed-by: Avri Altman --- drivers/scsi/ufs/ufshcd.c | 3 +++ drivers/scsi/ufs/ufshcd.h | 5 +++++ 2 files changed, 8 insertions(+) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 64bd59c..54a2259 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -5307,6 +5307,9 @@ static int ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set) static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable) { + if (hba->quirks & UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL) + return; + if (enable) ufshcd_wb_buf_flush_enable(hba); else diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 02bd405..e99efee 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -531,6 +531,11 @@ enum ufshcd_quirks { * OCS FATAL ERROR with device error through sense data */ UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR = 1 << 10, + + /* + * This quirk needs to disable manual flush for write booster + */ + UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL = 1 << 11, }; enum ufshcd_caps { -- 2.7.4