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Fri, 08 May 2020 09:25:04 -0800 Received: from MTKMBS02N2.mediatek.inc (172.21.101.101) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 8 May 2020 10:15:15 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 9 May 2020 01:15:10 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 9 May 2020 01:15:12 +0800 From: Stanley Chu To: , , , , , Subject: [PATCH v1 3/5] scsi: ufs: customize flush threshold for WriteBooster Date: Sat, 9 May 2020 01:15:11 +0800 Message-ID: <20200508171513.14665-4-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200508171513.14665-1-stanley.chu@mediatek.com> References: <20200508171513.14665-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: D97692ED15460159C4AFB5BA8F463C69AA861F79961DE9ADFD1E9F8C1A6BF2862000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200508_102529_577930_2A7D3638 X-CRM114-Status: GOOD ( 11.32 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: bvanassche@acm.org, andy.teng@mediatek.com, chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org, cang@codeaurora.org, linux-mediatek@lists.infradead.org, peter.wang@mediatek.com, matthias.bgg@gmail.com, Stanley Chu , linux-arm-kernel@lists.infradead.org, beanhuo@micron.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Allow flush threshold for WriteBooster to be customizable by vendors. To achieve this, make the value as a variable in struct ufs_hba first. Signed-off-by: Stanley Chu --- drivers/scsi/ufs/ufshcd.c | 6 ++++-- drivers/scsi/ufs/ufshcd.h | 1 + 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index cdacbe6378a1..9a0ce6550c2f 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -5301,8 +5301,8 @@ static bool ufshcd_wb_presrv_usrspc_keep_vcc_on(struct ufs_hba *hba, cur_buf); return false; } - /* Let it continue to flush when >60% full */ - if (avail_buf < UFS_WB_40_PERCENT_BUF_REMAIN) + /* Let it continue to flush when available buffer exceeds threshold */ + if (avail_buf < hba->vps->wb_flush_threshold) return true; return false; @@ -6839,6 +6839,7 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf) if (!d_lu_wb_buf_alloc) goto wb_disabled; } + return; wb_disabled: @@ -7462,6 +7463,7 @@ static const struct attribute_group *ufshcd_driver_groups[] = { static struct ufs_hba_variant_params ufs_hba_vps = { .hba_enable_delay_us = 1000, + .wb_flush_threshold = UFS_WB_40_PERCENT_BUF_REMAIN, .devfreq_profile.polling_ms = 100, .devfreq_profile.target = ufshcd_devfreq_target, .devfreq_profile.get_dev_status = ufshcd_devfreq_get_dev_status, diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index f7bdf52ba8b0..e3dfb48e669e 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -570,6 +570,7 @@ struct ufs_hba_variant_params { struct devfreq_dev_profile devfreq_profile; struct devfreq_simple_ondemand_data ondemand_data; u16 hba_enable_delay_us; + u32 wb_flush_threshold; }; /**