From patchwork Wed Aug 23 15:44:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Rawat X-Patchwork-Id: 13362793 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 164ABEE49A0 for ; Wed, 23 Aug 2023 15:44:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234756AbjHWPo2 (ORCPT ); Wed, 23 Aug 2023 11:44:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230245AbjHWPo1 (ORCPT ); Wed, 23 Aug 2023 11:44:27 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 17019E52; Wed, 23 Aug 2023 08:44:26 -0700 (PDT) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37NEOjcT016771; Wed, 23 Aug 2023 15:44:20 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=qcppdkim1; bh=75OGKGZobLN86QE8S1Fo0Ia1BOGzr7bQSpO253BHSPs=; b=BTb924NduGGtIFoIPW28HWgs42y57fzPl5cS0brPAZdYc38PrRZvAWw0WTTBwxk7e6ST h/xzxAoHGDN0Vua+Kg5qsLUJaNEgRzp1Sdr4DeqWr5xPTWBDmRif2rXBU/QheUs1SHy4 0PS4o0TLWSe/OhPO8FEbPm0MjZciVYmkmPqOiFt6JrTJM9cmu2cyAKo206wOJz6glFnM Jmf/ndD+K3KAUB/enj2NKbrOjq+/jC1KGEI3gX98SSjNgYM+DIYHP6mtFs34a1ubFypJ xZ4wGExdOm+UGcKNsxmxtgvaAxJXRqXjk8hxfWeM+owr8BOeSWJwe7TnRgcjtmXys2jk Ew== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3snkumr7q7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 23 Aug 2023 15:44:19 +0000 Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 37NFiGgV029192; Wed, 23 Aug 2023 15:44:16 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 3sjptm3qdj-1; Wed, 23 Aug 2023 15:44:16 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 37NFiG3I029185; Wed, 23 Aug 2023 15:44:16 GMT Received: from hu-maiyas-hyd.qualcomm.com (hu-nitirawa-hyd.qualcomm.com [10.213.109.152]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 37NFiGRJ029179; Wed, 23 Aug 2023 15:44:16 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 2342877) id C2AA95000AB; Wed, 23 Aug 2023 21:14:15 +0530 (+0530) From: Nitin Rawat To: mani@kernel.org, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: quic_cang@quicinc.com, quic_nguyenb@quicinc.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nitin Rawat , Naveen Kumar Goud Arepalli Subject: [PATCH V5 1/6] scsi: ufs: qcom: Update offset for core_clk_1us_cycles Date: Wed, 23 Aug 2023 21:14:08 +0530 Message-Id: <20230823154413.23788-2-quic_nitirawa@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230823154413.23788-1-quic_nitirawa@quicinc.com> References: <20230823154413.23788-1-quic_nitirawa@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: _bstBj6IkelJ-bSKnmj5RG9IYaWosgvD X-Proofpoint-ORIG-GUID: _bstBj6IkelJ-bSKnmj5RG9IYaWosgvD X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-23_09,2023-08-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxlogscore=978 spamscore=0 suspectscore=0 adultscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 lowpriorityscore=0 phishscore=0 mlxscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308230142 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org This Patch updates offset for core_clk_1us_cycles in DME_VS_CORE_CLK_CTRL register. Offset for core_clk_1us_cycles is changed from Qualcomm UFS Controller V4.0.0 onwards. Co-developed-by: Naveen Kumar Goud Arepalli Signed-off-by: Naveen Kumar Goud Arepalli Signed-off-by: Nitin Rawat --- drivers/ufs/host/ufs-qcom.c | 19 ++++++++++++++----- drivers/ufs/host/ufs-qcom.h | 2 ++ 2 files changed, 16 insertions(+), 5 deletions(-) -- 2.17.1 diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index f88febb23123..1108b0cd43b3 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -1297,12 +1297,21 @@ static void ufs_qcom_exit(struct ufs_hba *hba) } static int ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(struct ufs_hba *hba, - u32 clk_cycles) + u32 clk_1us_cycles) { - int err; + struct ufs_qcom_host *host = ufshcd_get_variant(hba); + u32 mask = DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK; u32 core_clk_ctrl_reg; + u32 offset = 0; + int err; + + /* Bit mask and offset changed on UFS host controller V4.0.0 onwards */ + if (host->hw_ver.major >= 4) { + mask = MAX_CORE_CLK_1US_CYCLES_MASK_V4; + offset = MAX_CORE_CLK_1US_CYCLES_OFFSET_V4; + } - if (clk_cycles > DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK) + if (clk_1us_cycles > mask) return -EINVAL; err = ufshcd_dme_get(hba, @@ -1311,8 +1320,8 @@ static int ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(struct ufs_hba *hba, if (err) return err; - core_clk_ctrl_reg &= ~DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK; - core_clk_ctrl_reg |= clk_cycles; + core_clk_ctrl_reg &= ~(mask << offset); + core_clk_ctrl_reg |= clk_1us_cycles << offset; /* Clear CORE_CLK_DIV_EN */ core_clk_ctrl_reg &= ~DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT; diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h index d6f8e74bd538..a829296e11bb 100644 --- a/drivers/ufs/host/ufs-qcom.h +++ b/drivers/ufs/host/ufs-qcom.h @@ -129,6 +129,8 @@ enum { #define PA_VS_CONFIG_REG1 0x9000 #define DME_VS_CORE_CLK_CTRL 0xD002 /* bit and mask definitions for DME_VS_CORE_CLK_CTRL attribute */ +#define MAX_CORE_CLK_1US_CYCLES_MASK_V4 0xFFF +#define MAX_CORE_CLK_1US_CYCLES_OFFSET_V4 0x10 #define DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT BIT(8) #define DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK 0xFF From patchwork Wed Aug 23 15:44:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Rawat X-Patchwork-Id: 13362797 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 35EF0EE49B8 for ; Wed, 23 Aug 2023 15:44:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235932AbjHWPob (ORCPT ); Wed, 23 Aug 2023 11:44:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235502AbjHWPo2 (ORCPT ); Wed, 23 Aug 2023 11:44:28 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BEE16E74; Wed, 23 Aug 2023 08:44:26 -0700 (PDT) Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37NCfFkJ016733; 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Wed, 23 Aug 2023 15:44:17 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 3sjptm3qds-1; Wed, 23 Aug 2023 15:44:17 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 37NFiHOT029201; Wed, 23 Aug 2023 15:44:17 GMT Received: from hu-maiyas-hyd.qualcomm.com (hu-nitirawa-hyd.qualcomm.com [10.213.109.152]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 37NFiGXs029193; Wed, 23 Aug 2023 15:44:17 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 2342877) id 407945000AD; Wed, 23 Aug 2023 21:14:16 +0530 (+0530) From: Nitin Rawat To: mani@kernel.org, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: quic_cang@quicinc.com, quic_nguyenb@quicinc.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nitin Rawat , Naveen Kumar Goud Arepalli Subject: [PATCH V5 2/6] scsi: ufs: qcom: Configure PA_VS_CORE_CLK_40NS_CYCLES for Unipro core clk Date: Wed, 23 Aug 2023 21:14:09 +0530 Message-Id: <20230823154413.23788-3-quic_nitirawa@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230823154413.23788-1-quic_nitirawa@quicinc.com> References: <20230823154413.23788-1-quic_nitirawa@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: v3omIW6haYxcnA7CQdVLpkXdnvRhHutr X-Proofpoint-GUID: v3omIW6haYxcnA7CQdVLpkXdnvRhHutr X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-23_09,2023-08-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 spamscore=0 suspectscore=0 phishscore=0 clxscore=1015 lowpriorityscore=0 bulkscore=0 mlxlogscore=999 malwarescore=0 impostorscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308230142 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org For Qualcomm UFS controller V4.0 and above PA_VS_CORE_CLK_40NS_CYCLES attribute needs to be programmed with frequency of unipro core clk. Hence Configure PA_VS_CORE_CLK_40NS_CYCLES attribute for Unipro core clk. Co-developed-by: Naveen Kumar Goud Arepalli Signed-off-by: Naveen Kumar Goud Arepalli Signed-off-by: Nitin Rawat --- drivers/ufs/host/ufs-qcom.c | 45 ++++++++++++++++++++++++++++--------- drivers/ufs/host/ufs-qcom.h | 2 ++ 2 files changed, 37 insertions(+), 10 deletions(-) -- 2.17.1 diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 1108b0cd43b3..abc0e7f7d1b0 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -93,8 +93,9 @@ static const struct __ufs_qcom_bw_table { static struct ufs_qcom_host *ufs_qcom_hosts[MAX_UFS_QCOM_HOSTS]; static void ufs_qcom_get_default_testbus_cfg(struct ufs_qcom_host *host); -static int ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(struct ufs_hba *hba, - u32 clk_cycles); +static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, + u32 clk_cycles, + u32 clk_40ns_cycles); static struct ufs_qcom_host *rcdev_to_ufs_host(struct reset_controller_dev *rcd) { @@ -690,8 +691,7 @@ static int ufs_qcom_link_startup_notify(struct ufs_hba *hba, * set unipro core clock cycles to 150 & clear clock * divider */ - err = ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(hba, - 150); + err = ufs_qcom_set_core_clk_ctrl(hba, 150, 6); /* * Some UFS devices (and may be host) have issues if LCC is @@ -1296,12 +1296,13 @@ static void ufs_qcom_exit(struct ufs_hba *hba) phy_exit(host->generic_phy); } -static int ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(struct ufs_hba *hba, - u32 clk_1us_cycles) +static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, + u32 clk_1us_cycles, + u32 clk_40ns_cycles) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); u32 mask = DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK; - u32 core_clk_ctrl_reg; + u32 core_clk_ctrl_reg, reg; u32 offset = 0; int err; @@ -1326,9 +1327,33 @@ static int ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(struct ufs_hba *hba, /* Clear CORE_CLK_DIV_EN */ core_clk_ctrl_reg &= ~DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT; - return ufshcd_dme_set(hba, + err = ufshcd_dme_set(hba, UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL), core_clk_ctrl_reg); + /* + * UFS host controller V4.0.0 onwards needs to program + * PA_VS_CORE_CLK_40NS_CYCLES attribute per programmed + * frequency of unipro core clk of UFS host controller. + */ + if (!err && (host->hw_ver.major >= 4)) { + if (clk_40ns_cycles > PA_VS_CORE_CLK_40NS_CYCLES_MASK) + return -EINVAL; + + err = ufshcd_dme_get(hba, + UIC_ARG_MIB(PA_VS_CORE_CLK_40NS_CYCLES), + ®); + if (err) + return err; + + reg &= ~PA_VS_CORE_CLK_40NS_CYCLES_MASK; + reg |= clk_40ns_cycles; + + err = ufshcd_dme_set(hba, + UIC_ARG_MIB(PA_VS_CORE_CLK_40NS_CYCLES), + reg); + } + + return err; } static int ufs_qcom_clk_scale_up_pre_change(struct ufs_hba *hba) @@ -1345,7 +1370,7 @@ static int ufs_qcom_clk_scale_up_post_change(struct ufs_hba *hba) return 0; /* set unipro core clock cycles to 150 and clear clock divider */ - return ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(hba, 150); + return ufs_qcom_set_core_clk_ctrl(hba, 150, 6); } static int ufs_qcom_clk_scale_down_pre_change(struct ufs_hba *hba) @@ -1381,7 +1406,7 @@ static int ufs_qcom_clk_scale_down_post_change(struct ufs_hba *hba) return 0; /* set unipro core clock cycles to 75 and clear clock divider */ - return ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(hba, 75); + return ufs_qcom_set_core_clk_ctrl(hba, 75, 3); } static int ufs_qcom_clk_scale_notify(struct ufs_hba *hba, diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h index a829296e11bb..325f08aca260 100644 --- a/drivers/ufs/host/ufs-qcom.h +++ b/drivers/ufs/host/ufs-qcom.h @@ -133,6 +133,8 @@ enum { #define MAX_CORE_CLK_1US_CYCLES_OFFSET_V4 0x10 #define DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT BIT(8) #define DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK 0xFF +#define PA_VS_CORE_CLK_40NS_CYCLES 0x9007 +#define PA_VS_CORE_CLK_40NS_CYCLES_MASK 0x3F static inline void ufs_qcom_get_controller_revision(struct ufs_hba *hba, From patchwork Wed Aug 23 15:44:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Rawat X-Patchwork-Id: 13362796 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2CBC0EE49B9 for ; Wed, 23 Aug 2023 15:44:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235772AbjHWPoa (ORCPT ); Wed, 23 Aug 2023 11:44:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235596AbjHWPo3 (ORCPT ); Wed, 23 Aug 2023 11:44:29 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 53BF5E52; Wed, 23 Aug 2023 08:44:27 -0700 (PDT) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37NEOjse016761; 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Wed, 23 Aug 2023 15:44:17 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 3sjptm3qdx-1; Wed, 23 Aug 2023 15:44:17 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 37NFiHTr029212; Wed, 23 Aug 2023 15:44:17 GMT Received: from hu-maiyas-hyd.qualcomm.com (hu-nitirawa-hyd.qualcomm.com [10.213.109.152]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 37NFiHDZ029207; Wed, 23 Aug 2023 15:44:17 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 2342877) id B1D395000AA; Wed, 23 Aug 2023 21:14:16 +0530 (+0530) From: Nitin Rawat To: mani@kernel.org, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: quic_cang@quicinc.com, quic_nguyenb@quicinc.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nitin Rawat , Naveen Kumar Goud Arepalli Subject: [PATCH V5 3/6] scsi: ufs: qcom: Add multiple frequency support for unipro clk attributes Date: Wed, 23 Aug 2023 21:14:10 +0530 Message-Id: <20230823154413.23788-4-quic_nitirawa@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230823154413.23788-1-quic_nitirawa@quicinc.com> References: <20230823154413.23788-1-quic_nitirawa@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 31zQ8KvvHaMF-48sso1a5lxFw0GbqHdH X-Proofpoint-ORIG-GUID: 31zQ8KvvHaMF-48sso1a5lxFw0GbqHdH X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-23_09,2023-08-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxlogscore=999 spamscore=0 suspectscore=0 adultscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 lowpriorityscore=0 phishscore=0 mlxscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308230142 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Add Support to configure CORE_CLK_1US_CYCLES, PA_VS_CORE_CLK_40NS_CYCLES for multiple unipro clock frequencies. Currently this is handled only for only 150Mhz and 75MHz. Co-developed-by: Naveen Kumar Goud Arepalli Signed-off-by: Naveen Kumar Goud Arepalli Signed-off-by: Nitin Rawat --- drivers/ufs/host/ufs-qcom.c | 88 ++++++++++++++++++++++++++++++++----- drivers/ufs/host/ufs-qcom.h | 9 ++++ 2 files changed, 87 insertions(+), 10 deletions(-) -- 2.17.1 diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index abc0e7f7d1b0..8162b19191a9 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -671,6 +671,45 @@ static int ufs_qcom_cfg_timers(struct ufs_hba *hba, u32 gear, return 0; } +static int ufs_qcom_cfg_core_clk_ctrl(struct ufs_hba *hba) +{ + struct list_head *head = &hba->clk_list_head; + struct ufs_clk_info *clki; + u32 max_freq = 0; + int err; + + list_for_each_entry(clki, head, list) { + if (!IS_ERR_OR_NULL(clki->clk) && + !strcmp(clki->name, "core_clk_unipro")) { + max_freq = clki->max_freq; + break; + } + } + + switch (max_freq) { + case MHZ_403: + err = ufs_qcom_set_core_clk_ctrl(hba, 403, 16); + break; + case MHZ_300: + err = ufs_qcom_set_core_clk_ctrl(hba, 300, 12); + break; + case MHZ_201_5: + err = ufs_qcom_set_core_clk_ctrl(hba, 202, 8); + break; + case MHZ_150: + err = ufs_qcom_set_core_clk_ctrl(hba, 150, 6); + break; + case MHZ_100: + err = ufs_qcom_set_core_clk_ctrl(hba, 100, 4); + break; + default: + dev_err(hba->dev, "unipro max_freq=%u entry missing\n", max_freq); + err = -EINVAL; + break; + } + + return err; +} static int ufs_qcom_link_startup_notify(struct ufs_hba *hba, enum ufs_notify_change_status status) { @@ -686,12 +725,15 @@ static int ufs_qcom_link_startup_notify(struct ufs_hba *hba, return -EINVAL; } - if (ufs_qcom_cap_qunipro(host)) - /* - * set unipro core clock cycles to 150 & clear clock - * divider - */ - err = ufs_qcom_set_core_clk_ctrl(hba, 150, 6); + if (ufs_qcom_cap_qunipro(host)) { + err = ufs_qcom_cfg_core_clk_ctrl(hba); + if (err) { + dev_err(hba->dev, + "%s cfg core clk ctrl failed\n", + __func__); + return err; + } + } /* * Some UFS devices (and may be host) have issues if LCC is @@ -1369,8 +1411,7 @@ static int ufs_qcom_clk_scale_up_post_change(struct ufs_hba *hba) if (!ufs_qcom_cap_qunipro(host)) return 0; - /* set unipro core clock cycles to 150 and clear clock divider */ - return ufs_qcom_set_core_clk_ctrl(hba, 150, 6); + return ufs_qcom_cfg_core_clk_ctrl(hba); } static int ufs_qcom_clk_scale_down_pre_change(struct ufs_hba *hba) @@ -1401,12 +1442,39 @@ static int ufs_qcom_clk_scale_down_pre_change(struct ufs_hba *hba) static int ufs_qcom_clk_scale_down_post_change(struct ufs_hba *hba) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); + struct list_head *head = &hba->clk_list_head; + struct ufs_clk_info *clki; + u32 curr_freq = 0; + int err; if (!ufs_qcom_cap_qunipro(host)) return 0; - /* set unipro core clock cycles to 75 and clear clock divider */ - return ufs_qcom_set_core_clk_ctrl(hba, 75, 3); + + list_for_each_entry(clki, head, list) { + if (!IS_ERR_OR_NULL(clki->clk) && + !strcmp(clki->name, "core_clk_unipro")) { + curr_freq = clk_get_rate(clki->clk); + break; + } + } + switch (curr_freq) { + case MHZ_37_5: + err = ufs_qcom_set_core_clk_ctrl(hba, 38, 2); + break; + case MHZ_75: + err = ufs_qcom_set_core_clk_ctrl(hba, 75, 3); + break; + case MHZ_100: + err = ufs_qcom_set_core_clk_ctrl(hba, 100, 4); + break; + default: + err = -EINVAL; + dev_err(hba->dev, "unipro curr_freq=%u entry missing\n", curr_freq); + break; + } + + return err; } static int ufs_qcom_clk_scale_notify(struct ufs_hba *hba, diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h index 325f08aca260..56550fd36c4e 100644 --- a/drivers/ufs/host/ufs-qcom.h +++ b/drivers/ufs/host/ufs-qcom.h @@ -79,6 +79,15 @@ enum { UFS_MEM_CQIS_VS = 0x8, }; +/* QCOM UFS host controller core clk frequencies */ +#define MHZ_37_5 37500000 +#define MHZ_50 50000000 +#define MHZ_75 75000000 +#define MHZ_100 100000000 +#define MHZ_150 150000000 +#define MHZ_300 300000000 +#define MHZ_201_5 201500000 +#define MHZ_403 403000000 #define UFS_CNTLR_2_x_x_VEN_REGS_OFFSET(x) (0x000 + x) #define UFS_CNTLR_3_x_x_VEN_REGS_OFFSET(x) (0x400 + x) From patchwork Wed Aug 23 15:44:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Rawat X-Patchwork-Id: 13362795 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73E20EE49B6 for ; 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Wed, 23 Aug 2023 15:44:21 +0000 Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 37NFiGuk029184; Wed, 23 Aug 2023 15:44:18 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 3sjptm3qe3-1; Wed, 23 Aug 2023 15:44:18 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 37NFiHTt029212; Wed, 23 Aug 2023 15:44:18 GMT Received: from hu-maiyas-hyd.qualcomm.com (hu-nitirawa-hyd.qualcomm.com [10.213.109.152]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 37NFiHDb029207; Wed, 23 Aug 2023 15:44:18 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 2342877) id 2F0375000AB; Wed, 23 Aug 2023 21:14:17 +0530 (+0530) From: Nitin Rawat To: mani@kernel.org, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: quic_cang@quicinc.com, quic_nguyenb@quicinc.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nitin Rawat , Naveen Kumar Goud Arepalli Subject: [PATCH V5 4/6] scsi: ufs: qcom: Align unipro clk attributes as per Hardware specification Date: Wed, 23 Aug 2023 21:14:11 +0530 Message-Id: <20230823154413.23788-5-quic_nitirawa@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230823154413.23788-1-quic_nitirawa@quicinc.com> References: <20230823154413.23788-1-quic_nitirawa@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: sNlmSZy_WwPCdNgGtyC6j7UJLvO80NtF X-Proofpoint-ORIG-GUID: sNlmSZy_WwPCdNgGtyC6j7UJLvO80NtF X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-23_09,2023-08-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 bulkscore=0 spamscore=0 phishscore=0 mlxscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=970 adultscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308230142 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Currently CORE_CLK_1US_CYCLES, PA_VS_CORE_CLK_40NS_CYCLES are configured in clk scaling post change ops. Move this to clk scaling pre change ops to align with the hardware specification. Co-developed-by: Naveen Kumar Goud Arepalli Signed-off-by: Naveen Kumar Goud Arepalli Signed-off-by: Nitin Rawat --- drivers/ufs/host/ufs-qcom.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) -- 2.17.1 diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 8162b19191a9..491c0173603e 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -1399,12 +1399,6 @@ static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, } static int ufs_qcom_clk_scale_up_pre_change(struct ufs_hba *hba) -{ - /* nothing to do as of now */ - return 0; -} - -static int ufs_qcom_clk_scale_up_post_change(struct ufs_hba *hba) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); @@ -1414,6 +1408,11 @@ static int ufs_qcom_clk_scale_up_post_change(struct ufs_hba *hba) return ufs_qcom_cfg_core_clk_ctrl(hba); } +static int ufs_qcom_clk_scale_up_post_change(struct ufs_hba *hba) +{ + return 0; +} + static int ufs_qcom_clk_scale_down_pre_change(struct ufs_hba *hba) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); From patchwork Wed Aug 23 15:44:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Rawat X-Patchwork-Id: 13362798 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7D3B7EE49B2 for ; Wed, 23 Aug 2023 15:44:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237149AbjHWPog (ORCPT ); Wed, 23 Aug 2023 11:44:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57448 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235882AbjHWPoc (ORCPT ); Wed, 23 Aug 2023 11:44:32 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15C45E71; Wed, 23 Aug 2023 08:44:30 -0700 (PDT) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37NFcCdZ000339; Wed, 23 Aug 2023 15:44:24 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=qcppdkim1; bh=2ggbf+VLeEiE+/sbCSo9uOpUJySOUF1PTCuAdqWsECg=; b=YlFWIUES4L6q3NZ/K9wFyeEToP1V567lQSNpxXtcU2tGH3RPKYu0enrkaPNjWEz+TveB MUvkZEPUlE720k0K8o7eosCE1vmZb0/w70hejorw8EY0lWQjTZJKmgqpHHHvhHZe7pE8 QWStqCIPSE4m227Ssg9woDkynZSkQQSOyxnSz3OpNeIVBYZCIHBjYwVNML31wMrWX0oV U4AM40BB0GdveQwopYKWtmm0GLWfG95ZYX3VOEhWNazoC4IjgBW6FyzsAk6i9VK1XfFQ y/VrvQwHm2Q99dwCWNJWusJyD0dBgTL8zFqf4gLlVoO+kCdcCbosU5Vkq+5pYx1WWmpX cg== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3snkumr7qb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 23 Aug 2023 15:44:24 +0000 Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 37NFiGul029184; Wed, 23 Aug 2023 15:44:21 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 3sjptm3qe8-1; Wed, 23 Aug 2023 15:44:21 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 37NFiKfq029246; Wed, 23 Aug 2023 15:44:21 GMT Received: from hu-maiyas-hyd.qualcomm.com (hu-nitirawa-hyd.qualcomm.com [10.213.109.152]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 37NFiKcB029245; Wed, 23 Aug 2023 15:44:20 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 2342877) id 15AA45000AA; Wed, 23 Aug 2023 21:14:20 +0530 (+0530) From: Nitin Rawat To: mani@kernel.org, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: quic_cang@quicinc.com, quic_nguyenb@quicinc.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nitin Rawat , Naveen Kumar Goud Arepalli Subject: [PATCH V5 5/6] scsi: ufs: qcom: Refactor ufs_qcom_cfg_timers function. Date: Wed, 23 Aug 2023 21:14:12 +0530 Message-Id: <20230823154413.23788-6-quic_nitirawa@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230823154413.23788-1-quic_nitirawa@quicinc.com> References: <20230823154413.23788-1-quic_nitirawa@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: GrF7omCxYAGDM8ilopWkPnQB7BH7oXFL X-Proofpoint-ORIG-GUID: GrF7omCxYAGDM8ilopWkPnQB7BH7oXFL X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-23_09,2023-08-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxlogscore=999 spamscore=0 suspectscore=0 adultscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 lowpriorityscore=0 phishscore=0 mlxscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308230142 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org This change configures SYS1CLK_1US_REG for pre scale up condition. Also move ufs_qcom_cfg_timers from clk scaling post change ops to clk scaling pre change ops to align with the hardware specification. Co-developed-by: Naveen Kumar Goud Arepalli Signed-off-by: Naveen Kumar Goud Arepalli Signed-off-by: Nitin Rawat --- drivers/ufs/host/ufs-qcom.c | 61 +++++++++++++++++++++++++------------ 1 file changed, 42 insertions(+), 19 deletions(-) -- 2.17.1 diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 491c0173603e..82cf3ac4193a 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -533,7 +533,8 @@ static int ufs_qcom_hce_enable_notify(struct ufs_hba *hba, * Return: zero for success and non-zero in case of a failure. */ static int ufs_qcom_cfg_timers(struct ufs_hba *hba, u32 gear, - u32 hs, u32 rate, bool update_link_startup_timer) + u32 hs, u32 rate, bool link_startup, + bool is_pre_scale_up) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); struct ufs_clk_info *clki; @@ -564,11 +565,16 @@ static int ufs_qcom_cfg_timers(struct ufs_hba *hba, u32 gear, /* * The Qunipro controller does not use following registers: * SYS1CLK_1US_REG, TX_SYMBOL_CLK_1US_REG, CLK_NS_REG & - * UFS_REG_PA_LINK_STARTUP_TIMER - * But UTP controller uses SYS1CLK_1US_REG register for Interrupt - * Aggregation logic. - */ - if (ufs_qcom_cap_qunipro(host) && !ufshcd_is_intr_aggr_allowed(hba)) + * UFS_REG_PA_LINK_STARTUP_TIMER. + * However UTP controller uses SYS1CLK_1US_REG register for Interrupt + * Aggregation logic and Auto hibern8 logic. + * It is mandatory to write SYS1CLK_1US_REG register on UFS host + * controller V4.0.0 onwards. + */ + if (ufs_qcom_cap_qunipro(host) && + !(ufshcd_is_intr_aggr_allowed(hba) || + ufshcd_is_auto_hibern8_supported(hba) || + host->hw_ver.major >= 4)) return 0; if (gear == 0) { @@ -577,8 +583,14 @@ static int ufs_qcom_cfg_timers(struct ufs_hba *hba, u32 gear, } list_for_each_entry(clki, &hba->clk_list_head, list) { - if (!strcmp(clki->name, "core_clk")) - core_clk_rate = clk_get_rate(clki->clk); + if (!strcmp(clki->name, "core_clk")) { + if (is_pre_scale_up) + core_clk_rate = clki->max_freq; + else + core_clk_rate = clk_get_rate(clki->clk); + break; + } + } /* If frequency is smaller than 1MHz, set to 1MHz */ @@ -658,7 +670,7 @@ static int ufs_qcom_cfg_timers(struct ufs_hba *hba, u32 gear, mb(); } - if (update_link_startup_timer && host->hw_ver.major != 0x5) { + if (link_startup && host->hw_ver.major != 0x5) { ufshcd_writel(hba, ((core_clk_rate / MSEC_PER_SEC) * 100), REG_UFS_CFG0); /* @@ -719,7 +731,7 @@ static int ufs_qcom_link_startup_notify(struct ufs_hba *hba, switch (status) { case PRE_CHANGE: if (ufs_qcom_cfg_timers(hba, UFS_PWM_G1, SLOWAUTO_MODE, - 0, true)) { + 0, true, false)) { dev_err(hba->dev, "%s: ufs_qcom_cfg_timers() failed\n", __func__); return -EINVAL; @@ -968,7 +980,7 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba, case POST_CHANGE: if (ufs_qcom_cfg_timers(hba, dev_req_params->gear_rx, dev_req_params->pwr_rx, - dev_req_params->hs_rate, false)) { + dev_req_params->hs_rate, false, false)) { dev_err(hba->dev, "%s: ufs_qcom_cfg_timers() failed\n", __func__); /* @@ -1401,11 +1413,24 @@ static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, static int ufs_qcom_clk_scale_up_pre_change(struct ufs_hba *hba) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); + struct ufs_pa_layer_attr *attr = &host->dev_req_params; + int err; if (!ufs_qcom_cap_qunipro(host)) - return 0; + goto out; + + if (attr) { + err = ufs_qcom_cfg_timers(hba, attr->gear_rx, + attr->pwr_rx, attr->hs_rate, + false, true); + if (err) + dev_err(hba->dev, "%s ufs cfg timer failed\n", + __func__); + } - return ufs_qcom_cfg_core_clk_ctrl(hba); + err = ufs_qcom_cfg_core_clk_ctrl(hba); +out: + return err; } static int ufs_qcom_clk_scale_up_post_change(struct ufs_hba *hba) @@ -1441,6 +1466,7 @@ static int ufs_qcom_clk_scale_down_pre_change(struct ufs_hba *hba) static int ufs_qcom_clk_scale_down_post_change(struct ufs_hba *hba) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); + struct ufs_pa_layer_attr *attr = &host->dev_req_params; struct list_head *head = &hba->clk_list_head; struct ufs_clk_info *clki; u32 curr_freq = 0; @@ -1449,6 +1475,9 @@ static int ufs_qcom_clk_scale_down_post_change(struct ufs_hba *hba) if (!ufs_qcom_cap_qunipro(host)) return 0; + if (attr) + ufs_qcom_cfg_timers(hba, attr->gear_rx, attr->pwr_rx, + attr->hs_rate, false, false); list_for_each_entry(clki, head, list) { if (!IS_ERR_OR_NULL(clki->clk) && @@ -1480,7 +1509,6 @@ static int ufs_qcom_clk_scale_notify(struct ufs_hba *hba, bool scale_up, enum ufs_notify_change_status status) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); - struct ufs_pa_layer_attr *dev_req_params = &host->dev_req_params; int err = 0; /* check the host controller state before sending hibern8 cmd */ @@ -1510,11 +1538,6 @@ static int ufs_qcom_clk_scale_notify(struct ufs_hba *hba, return err; } - ufs_qcom_cfg_timers(hba, - dev_req_params->gear_rx, - dev_req_params->pwr_rx, - dev_req_params->hs_rate, - false); ufs_qcom_icc_update_bw(host); ufshcd_uic_hibern8_exit(hba); } From patchwork Wed Aug 23 15:44:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Rawat X-Patchwork-Id: 13362799 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DE008EE49B5 for ; Wed, 23 Aug 2023 15:44:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236568AbjHWPoh (ORCPT ); Wed, 23 Aug 2023 11:44:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57472 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236915AbjHWPod (ORCPT ); Wed, 23 Aug 2023 11:44:33 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B1A18E52; 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Wed, 23 Aug 2023 15:44:24 +0000 Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 37NFiHdM029208; Wed, 23 Aug 2023 15:44:21 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 3sjptm3qef-1; Wed, 23 Aug 2023 15:44:21 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 37NFiL3C029260; Wed, 23 Aug 2023 15:44:21 GMT Received: from hu-maiyas-hyd.qualcomm.com (hu-nitirawa-hyd.qualcomm.com [10.213.109.152]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 37NFiL7t029258; Wed, 23 Aug 2023 15:44:21 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 2342877) id D4C815000AB; Wed, 23 Aug 2023 21:14:20 +0530 (+0530) From: Nitin Rawat To: mani@kernel.org, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: quic_cang@quicinc.com, quic_nguyenb@quicinc.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nitin Rawat , Naveen Kumar Goud Arepalli Subject: [PATCH V5 6/6] scsi: ufs: qcom: Handle unipro clk HW division based on scaling conditions. Date: Wed, 23 Aug 2023 21:14:13 +0530 Message-Id: <20230823154413.23788-7-quic_nitirawa@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230823154413.23788-1-quic_nitirawa@quicinc.com> References: <20230823154413.23788-1-quic_nitirawa@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: Kirj_zTWA4LwA0501zrxRg7O_SwvA2bC X-Proofpoint-ORIG-GUID: Kirj_zTWA4LwA0501zrxRg7O_SwvA2bC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-23_09,2023-08-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 mlxlogscore=999 mlxscore=0 lowpriorityscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 suspectscore=0 adultscore=0 phishscore=0 bulkscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308230142 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Configure internal HW division of unipro core_clk based on scale up and scale down condition. This bit should be cleared before entering any SVS mode as per hardware specification. Co-developed-by: Naveen Kumar Goud Arepalli Signed-off-by: Naveen Kumar Goud Arepalli Signed-off-by: Nitin Rawat --- drivers/ufs/host/ufs-qcom.c | 49 ++++++++++++++++++++----------------- drivers/ufs/host/ufs-qcom.h | 2 +- 2 files changed, 27 insertions(+), 24 deletions(-) -- 2.17.1 diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 82cf3ac4193a..d886e28b8a2a 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -95,7 +95,8 @@ static struct ufs_qcom_host *ufs_qcom_hosts[MAX_UFS_QCOM_HOSTS]; static void ufs_qcom_get_default_testbus_cfg(struct ufs_qcom_host *host); static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, u32 clk_cycles, - u32 clk_40ns_cycles); + u32 clk_40ns_cycles, + bool scale_up); static struct ufs_qcom_host *rcdev_to_ufs_host(struct reset_controller_dev *rcd) { @@ -700,19 +701,19 @@ static int ufs_qcom_cfg_core_clk_ctrl(struct ufs_hba *hba) switch (max_freq) { case MHZ_403: - err = ufs_qcom_set_core_clk_ctrl(hba, 403, 16); + err = ufs_qcom_set_core_clk_ctrl(hba, 403, 16, true); break; case MHZ_300: - err = ufs_qcom_set_core_clk_ctrl(hba, 300, 12); + err = ufs_qcom_set_core_clk_ctrl(hba, 300, 12, true); break; case MHZ_201_5: - err = ufs_qcom_set_core_clk_ctrl(hba, 202, 8); + err = ufs_qcom_set_core_clk_ctrl(hba, 202, 8, true); break; case MHZ_150: - err = ufs_qcom_set_core_clk_ctrl(hba, 150, 6); + err = ufs_qcom_set_core_clk_ctrl(hba, 150, 6, true); break; case MHZ_100: - err = ufs_qcom_set_core_clk_ctrl(hba, 100, 4); + err = ufs_qcom_set_core_clk_ctrl(hba, 100, 4, true); break; default: dev_err(hba->dev, "unipro max_freq=%u entry missing\n", max_freq); @@ -1352,7 +1353,8 @@ static void ufs_qcom_exit(struct ufs_hba *hba) static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, u32 clk_1us_cycles, - u32 clk_40ns_cycles) + u32 clk_40ns_cycles, + bool scale_up) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); u32 mask = DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK; @@ -1378,18 +1380,20 @@ static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, core_clk_ctrl_reg &= ~(mask << offset); core_clk_ctrl_reg |= clk_1us_cycles << offset; - /* Clear CORE_CLK_DIV_EN */ - core_clk_ctrl_reg &= ~DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT; + if (scale_up) + core_clk_ctrl_reg |= CORE_CLK_DIV_EN_BIT; err = ufshcd_dme_set(hba, - UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL), - core_clk_ctrl_reg); + UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL), + core_clk_ctrl_reg); + if (err) + return err; /* * UFS host controller V4.0.0 onwards needs to program * PA_VS_CORE_CLK_40NS_CYCLES attribute per programmed * frequency of unipro core clk of UFS host controller. */ - if (!err && (host->hw_ver.major >= 4)) { + if (host->hw_ver.major >= 4) { if (clk_40ns_cycles > PA_VS_CORE_CLK_40NS_CYCLES_MASK) return -EINVAL; @@ -1442,22 +1446,21 @@ static int ufs_qcom_clk_scale_down_pre_change(struct ufs_hba *hba) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); int err; - u32 core_clk_ctrl_reg; + u32 reg; if (!ufs_qcom_cap_qunipro(host)) return 0; - err = ufshcd_dme_get(hba, - UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL), - &core_clk_ctrl_reg); + err = ufshcd_dme_get(hba, UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL), ®); + if (err) + return err; /* make sure CORE_CLK_DIV_EN is cleared */ - if (!err && - (core_clk_ctrl_reg & DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT)) { - core_clk_ctrl_reg &= ~DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT; + if (reg & CORE_CLK_DIV_EN_BIT) { + reg &= ~CORE_CLK_DIV_EN_BIT; err = ufshcd_dme_set(hba, UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL), - core_clk_ctrl_reg); + reg); } return err; @@ -1488,13 +1491,13 @@ static int ufs_qcom_clk_scale_down_post_change(struct ufs_hba *hba) } switch (curr_freq) { case MHZ_37_5: - err = ufs_qcom_set_core_clk_ctrl(hba, 38, 2); + err = ufs_qcom_set_core_clk_ctrl(hba, 38, 2, false); break; case MHZ_75: - err = ufs_qcom_set_core_clk_ctrl(hba, 75, 3); + err = ufs_qcom_set_core_clk_ctrl(hba, 75, 3, false); break; case MHZ_100: - err = ufs_qcom_set_core_clk_ctrl(hba, 100, 4); + err = ufs_qcom_set_core_clk_ctrl(hba, 100, 4, false); break; default: err = -EINVAL; diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h index 56550fd36c4e..6e8eb4bb9247 100644 --- a/drivers/ufs/host/ufs-qcom.h +++ b/drivers/ufs/host/ufs-qcom.h @@ -140,7 +140,7 @@ enum { /* bit and mask definitions for DME_VS_CORE_CLK_CTRL attribute */ #define MAX_CORE_CLK_1US_CYCLES_MASK_V4 0xFFF #define MAX_CORE_CLK_1US_CYCLES_OFFSET_V4 0x10 -#define DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT BIT(8) +#define CORE_CLK_DIV_EN_BIT BIT(8) #define DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK 0xFF #define PA_VS_CORE_CLK_40NS_CYCLES 0x9007 #define PA_VS_CORE_CLK_40NS_CYCLES_MASK 0x3F