From patchwork Tue Sep 5 05:23:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Rawat X-Patchwork-Id: 720464 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 37CB2CA0FF3 for ; Tue, 5 Sep 2023 16:04:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237551AbjIEQEd (ORCPT ); Tue, 5 Sep 2023 12:04:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54540 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351612AbjIEFYT (ORCPT ); Tue, 5 Sep 2023 01:24:19 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 03734CCB; Mon, 4 Sep 2023 22:24:15 -0700 (PDT) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3854O7DF027605; Tue, 5 Sep 2023 05:24:08 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=ujAkzKfoJAD7OI+z7gmNkocWg2ZhUPj9x0EJEb3YVWA=; b=iDe/tYqJgrmE17nYdMH/pBLMArSnZ86qvkhrFiG4iXzibb+4u+Kvd3PAP1C/8xE/PxWT NlPqlLlGxgFJaGDRf3lBTdVpGKZT25pfjh/R0cHEmfuW1jOwufekkYHPMz+RbMIcBPUi pP/Z3fTMo8m10/mEW5hgeXMlvZNAyfRWOEQuVOclz0hikGyLwC5PiESKeqDguJLV9qcJ IOQ05RAM446/KGqwsaecPw+tlm2rFEQFa82JlGiwaxHGs8bMdNYoLSUhtOCY/rIVw7y/ Yr03GvNy7PPMmBODOmL1fWBQfQcSBi4JZPn82xnb5MsBLpYON8vTAwrbE28cPxg8M+dY iA== Received: from apblrppmta02.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3suvcrct38-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 05 Sep 2023 05:24:08 +0000 Received: from pps.filterd (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 3855O4mH029335; Tue, 5 Sep 2023 05:24:04 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 3sux4kjpuw-1; Tue, 05 Sep 2023 05:24:04 +0000 Received: from APBLRPPMTA02.qualcomm.com (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3855O4NQ029329; Tue, 5 Sep 2023 05:24:04 GMT Received: from hu-maiyas-hyd.qualcomm.com (hu-nitirawa-hyd.qualcomm.com [10.213.109.152]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 3855O4MF029327; Tue, 05 Sep 2023 05:24:04 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 2342877) id 5F69B504921; Tue, 5 Sep 2023 10:54:03 +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 V8 1/5] scsi: ufs: qcom: Update MAX_CORE_CLK_1US_CYCLES for UFS V4 and above Date: Tue, 5 Sep 2023 10:53:56 +0530 Message-Id: <20230905052400.13935-2-quic_nitirawa@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230905052400.13935-1-quic_nitirawa@quicinc.com> References: <20230905052400.13935-1-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: Z-qvEttmJbCrIcBjqgEtPxY-cH8TeBjx X-Proofpoint-ORIG-GUID: Z-qvEttmJbCrIcBjqgEtPxY-cH8TeBjx 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=2023-09-05_03,2023-08-31_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=999 impostorscore=0 suspectscore=0 lowpriorityscore=0 mlxscore=0 spamscore=0 clxscore=1015 adultscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309050047 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org UFS Controller V4 and above, the register layout for DME_VS_CORE_CLK_CTRL register has changed. MAX_CORE_CLK_1US_CYCLES offset has changed from 0 to 0x10 and length of attrbute is changed from 8bit to 12bit. Add support to configure MAX_CORE_CLK_1US_CYCLES for UFS V4 and above as per new register layout. 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 | 18 +++++++++++++----- drivers/ufs/host/ufs-qcom.h | 5 +++-- 2 files changed, 16 insertions(+), 7 deletions(-) -- 2.17.1 diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index d1149b1c3ed5..d846e68a5734 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -1299,20 +1299,28 @@ 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) { + struct ufs_qcom_host *host = ufshcd_get_variant(hba); int err; u32 core_clk_ctrl_reg; - if (clk_cycles > DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK) - return -EINVAL; - err = ufshcd_dme_get(hba, UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL), &core_clk_ctrl_reg); 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; + /* Bit mask is different for UFS host controller V4.0.0 onwards */ + if (host->hw_ver.major >= 4) { + if (!FIELD_FIT(CLK_1US_CYCLES_MASK_V4, clk_cycles)) + return -ERANGE; + core_clk_ctrl_reg &= ~CLK_1US_CYCLES_MASK_V4; + core_clk_ctrl_reg |= FIELD_PREP(CLK_1US_CYCLES_MASK_V4, clk_cycles); + } else { + if (!FIELD_FIT(CLK_1US_CYCLES_MASK, clk_cycles)) + return -ERANGE; + core_clk_ctrl_reg &= ~CLK_1US_CYCLES_MASK; + core_clk_ctrl_reg |= FIELD_PREP(CLK_1US_CYCLES_MASK, clk_cycles); + } /* 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..8a9d3dbec297 100644 --- a/drivers/ufs/host/ufs-qcom.h +++ b/drivers/ufs/host/ufs-qcom.h @@ -129,8 +129,9 @@ 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 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 CLK_1US_CYCLES_MASK_V4 GENMASK(27, 16) +#define CLK_1US_CYCLES_MASK GENMASK(7, 0) +#define DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT BIT(8) static inline void ufs_qcom_get_controller_revision(struct ufs_hba *hba,