linux-kernel - [PATCH v1 2/2] scsi: ufs: Select INITIAL ADAPT type for HS Gear4

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1581485910-8307-3-git-send-email-cang@codeaurora.org>
Date:   Tue, 11 Feb 2020 21:38:29 -0800
From:   Can Guo <cang@...eaurora.org>
To:     asutoshd@...eaurora.org, nguyenb@...eaurora.org,
        hongwus@...eaurora.org, rnayak@...eaurora.org,
        linux-scsi@...r.kernel.org, kernel-team@...roid.com,
        saravanak@...gle.com, salyzyn@...gle.com, cang@...eaurora.org
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Pedro Sousa <sousa@...opsys.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-arm-msm@...r.kernel.org (open list:ARM/QUALCOMM SUPPORT),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v1 2/2] scsi: ufs: Select INITIAL ADAPT type for HS Gear4

ADAPT is added specifically for HS Gear4 mode only, select INITIAL ADAPT
before do power mode change to G4 and select NO ADAPT before switch to
non-G4 modes.

Signed-off-by: Can Guo <cang@...eaurora.org>
---
 drivers/scsi/ufs/ufs-qcom.c | 14 ++++++++++++++
 drivers/scsi/ufs/unipro.h   |  7 +++++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index d593523..6a905bb 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -942,6 +942,20 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
 		if (!ufshcd_is_hs_mode(&hba->pwr_info) &&
 			ufshcd_is_hs_mode(dev_req_params))
 			ufs_qcom_dev_ref_clk_ctrl(host, true);
+
+		if (host->hw_ver.major >= 0x4) {
+			if (dev_req_params->gear_tx == UFS_HS_G4) {
+				/* INITIAL ADAPT */
+				ufshcd_dme_set(hba,
+					       UIC_ARG_MIB(PA_TXHSADAPTTYPE),
+					       PA_INITIAL_ADAPT);
+			} else {
+				/* NO ADAPT */
+				ufshcd_dme_set(hba,
+					       UIC_ARG_MIB(PA_TXHSADAPTTYPE),
+					       PA_NO_ADAPT);
+			}
+		}
 		break;
 	case POST_CHANGE:
 		if (ufs_qcom_cfg_timers(hba, dev_req_params->gear_rx,
diff --git a/drivers/scsi/ufs/unipro.h b/drivers/scsi/ufs/unipro.h
index 3dc4d8b..766d551 100644
--- a/drivers/scsi/ufs/unipro.h
+++ b/drivers/scsi/ufs/unipro.h
@@ -146,6 +146,12 @@
 #define PA_SLEEPNOCONFIGTIME	0x15A2
 #define PA_STALLNOCONFIGTIME	0x15A3
 #define PA_SAVECONFIGTIME	0x15A4
+#define PA_TXHSADAPTTYPE       0x15D4
+
+/* Adpat type for PA_TXHSADAPTTYPE attribute */
+#define PA_REFRESH_ADAPT       0x00
+#define PA_INITIAL_ADAPT       0x01
+#define PA_NO_ADAPT            0x03
 
 #define PA_TACTIVATE_TIME_UNIT_US	10
 #define PA_HIBERN8_TIME_UNIT_US		100
@@ -203,6 +209,7 @@ enum ufs_hs_gear_tag {
 	UFS_HS_G1,		/* HS Gear 1 (default for reset) */
 	UFS_HS_G2,		/* HS Gear 2 */
 	UFS_HS_G3,		/* HS Gear 3 */
+	UFS_HS_G4,		/* HS Gear 4 */
 };
 
 enum ufs_unipro_ver {
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project