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: 13374645 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, From patchwork Tue Sep 5 05:23:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Rawat X-Patchwork-Id: 13374680 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 1CF60CA0FF3 for ; Tue, 5 Sep 2023 16:07:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235763AbjIEQHG (ORCPT ); Tue, 5 Sep 2023 12:07:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54542 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351616AbjIEFYU (ORCPT ); Tue, 5 Sep 2023 01:24:20 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E5DDE8; Mon, 4 Sep 2023 22:24:16 -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 3855Mj5q005791; Tue, 5 Sep 2023 05:24:09 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=aTn9E5GgcFMM6Ytd+TxIz5tcKKpOGiM3fyZwhZgomAs=; b=Oam4ziWrc93ZjhLGbpxwB9vsfa3hlLIHEYYnoj4c8/rSgo1ZK8JfNOf7nVpW6nH6sEqB bX4zNp2EkggJZ6+ZNMVKnVlmNufFgYYUhksri4I/d2lCNNvslRgWRSPpkwEtXwhTwJ1J nN9WBWYN45AGDBERpBqvu/GMflcZcibdwuQG4o76Re2f8uSXFdySxV2v13jknZ/HiB2i auE1AEJTFLgXHgFt35YGYJ94NpNgRyrfQYYfpN/AARBe4bnC94hayMn5LhfjRLUEtdkG UhOg6QNQsRmt+lyhrwtOBqw6d6ol5jmSc6Bw442eNHUMbByf6EjBRWjZI7Q6+ybr+K22 Ag== 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 3swpr6gj5f-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 3855O5mf029360; Tue, 5 Sep 2023 05:24:05 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 3sux4kjpv6-1; Tue, 05 Sep 2023 05:24:05 +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 3855O5mI029347; Tue, 5 Sep 2023 05:24:05 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 3855O5uH029342; Tue, 05 Sep 2023 05:24:05 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 2342877) id 434C2504920; Tue, 5 Sep 2023 10:54:04 +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 2/5] scsi: ufs: qcom: Add multiple frequency support for MAX_CORE_CLK_1US_CYCLES Date: Tue, 5 Sep 2023 10:53:57 +0530 Message-Id: <20230905052400.13935-3-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-ORIG-GUID: AM4P77SoM6KTJEK_zSQxdPdghkYivccE X-Proofpoint-GUID: AM4P77SoM6KTJEK_zSQxdPdghkYivccE 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 phishscore=0 spamscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 bulkscore=0 impostorscore=0 mlxlogscore=999 clxscore=1015 adultscore=0 priorityscore=1501 mlxscore=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 Qualcomm UFS Controller V4 and above supports multiple unipro frequencies like 403MHz, 300MHz, 202MHz, 150 MHz, 75Mhz, 37.5 MHz. Current code supports only 150MHz and 75MHz which have performance impact due to low UFS controller frequencies. For targets which supports frequencies other than 150 MHz and 75 Mhz, needs an update of MAX_CORE_CLK_1US_CYCLES to match the configured frequency to avoid functionality issues. Add multiple frequency support for MAX_CORE_CLK_1US_CYCLES based on the frequency configured. 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 | 51 ++++++++++++++++++++++--------------- drivers/ufs/host/ufs-qcom.h | 1 + 2 files changed, 31 insertions(+), 21 deletions(-) -- 2.17.1 diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index d846e68a5734..b2be9ff272a4 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -93,8 +93,7 @@ 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, bool is_scale_up); static struct ufs_qcom_host *rcdev_to_ufs_host(struct reset_controller_dev *rcd) { @@ -685,14 +684,11 @@ 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_dme_vs_core_clk_ctrl_clear_div(hba, - 150); - + if (ufs_qcom_cap_qunipro(host)) { + err = ufs_qcom_set_core_clk_ctrl(hba, true); + if (err) + dev_err(hba->dev, "cfg core clk ctrl failed\n"); + } /* * Some UFS devices (and may be host) have issues if LCC is * enabled. So we are setting PA_Local_TX_LCC_Enable to 0 @@ -1296,12 +1292,25 @@ 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_cycles) +static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, bool is_scale_up) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); - int err; + struct list_head *head = &hba->clk_list_head; + struct ufs_clk_info *clki; + u32 cycles_in_1us; u32 core_clk_ctrl_reg; + int err; + + list_for_each_entry(clki, head, list) { + if (!IS_ERR_OR_NULL(clki->clk) && + !strcmp(clki->name, "core_clk_unipro")) { + if (is_scale_up) + cycles_in_1us = ceil(clki->max_freq, (1000 * 1000)); + else + cycles_in_1us = ceil(clk_get_rate(clki->clk), (1000 * 1000)); + break; + } + } err = ufshcd_dme_get(hba, UIC_ARG_MIB(DME_VS_CORE_CLK_CTRL), @@ -1311,15 +1320,15 @@ static int ufs_qcom_set_dme_vs_core_clk_ctrl_clear_div(struct ufs_hba *hba, /* 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)) + if (!FIELD_FIT(CLK_1US_CYCLES_MASK_V4, cycles_in_1us)) return -ERANGE; core_clk_ctrl_reg &= ~CLK_1US_CYCLES_MASK_V4; - core_clk_ctrl_reg |= FIELD_PREP(CLK_1US_CYCLES_MASK_V4, clk_cycles); + core_clk_ctrl_reg |= FIELD_PREP(CLK_1US_CYCLES_MASK_V4, cycles_in_1us); } else { - if (!FIELD_FIT(CLK_1US_CYCLES_MASK, clk_cycles)) + if (!FIELD_FIT(CLK_1US_CYCLES_MASK, cycles_in_1us)) return -ERANGE; core_clk_ctrl_reg &= ~CLK_1US_CYCLES_MASK; - core_clk_ctrl_reg |= FIELD_PREP(CLK_1US_CYCLES_MASK, clk_cycles); + core_clk_ctrl_reg |= FIELD_PREP(CLK_1US_CYCLES_MASK, cycles_in_1us); } /* Clear CORE_CLK_DIV_EN */ @@ -1343,8 +1352,8 @@ 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_dme_vs_core_clk_ctrl_clear_div(hba, 150); + /* set unipro core clock attributes and clear clock divider */ + return ufs_qcom_set_core_clk_ctrl(hba, true); } static int ufs_qcom_clk_scale_down_pre_change(struct ufs_hba *hba) @@ -1379,8 +1388,8 @@ static int ufs_qcom_clk_scale_down_post_change(struct ufs_hba *hba) if (!ufs_qcom_cap_qunipro(host)) 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); + /* set unipro core clock attributes and clear clock divider */ + return ufs_qcom_set_core_clk_ctrl(hba, false); } 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 8a9d3dbec297..3c6ef1259af3 100644 --- a/drivers/ufs/host/ufs-qcom.h +++ b/drivers/ufs/host/ufs-qcom.h @@ -245,6 +245,7 @@ ufs_qcom_get_debug_reg_offset(struct ufs_qcom_host *host, u32 reg) #define ufs_qcom_is_link_off(hba) ufshcd_is_link_off(hba) #define ufs_qcom_is_link_active(hba) ufshcd_is_link_active(hba) #define ufs_qcom_is_link_hibern8(hba) ufshcd_is_link_hibern8(hba) +#define ceil(freq, div) ((freq) % (div) == 0 ? ((freq)/(div)) : ((freq)/(div) + 1)) int ufs_qcom_testbus_config(struct ufs_qcom_host *host); From patchwork Tue Sep 5 05:23:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Rawat X-Patchwork-Id: 13374661 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 7A8CFC83F2C for ; Tue, 5 Sep 2023 16:05:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238356AbjIEQFz (ORCPT ); Tue, 5 Sep 2023 12:05:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351673AbjIEFYq (ORCPT ); Tue, 5 Sep 2023 01:24:46 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8CD9BE8; Mon, 4 Sep 2023 22:24:40 -0700 (PDT) Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3854cQJU021028; Tue, 5 Sep 2023 05:24:32 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=R2k4zuTcTVeTnuP3LgOzkRt4e7vTr+UwtAfQXt421wU=; b=PK2w96GBhfdqzACHf14H/flo86TU5yYc9AXtqpDFK8vG4Xn5C9LqlMj+wpWiqZaqzRuT vUZMslnG01tv8jN51M2fgHKmCtlnwNNEaViGyuvjLO0GVwN1LqW+OR5HC+tAUc4sfpUl iv/Rd8pP3hKXqNKtoQBct9QYPwZNakl/w6l/kq2A4iISXQGxE5atX/SjAU12PSkj9xsM 0xcc1N565Uu57JE+TsU7nyasgwG4H+E8AjX9BAUzJ4S80oKRwQtzWFPfXMUk199GuI52 /Ib3F1+kW80a/UFpwvPEM4xPdTU6kL53Og94IyKhnZVH6eAAIapw/U+flbb6FstCibjL LA== 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 3swfae1j0j-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 05 Sep 2023 05:24:32 +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 3855O6I4029413; Tue, 5 Sep 2023 05:24:06 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 3sux4kjpvd-1; Tue, 05 Sep 2023 05:24:06 +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 3855O5mK029347; Tue, 5 Sep 2023 05:24:06 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 3855O5uJ029342; Tue, 05 Sep 2023 05:24:05 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 2342877) id EA040504921; Tue, 5 Sep 2023 10:54:04 +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 3/5] scsi: ufs: qcom: Add support to Configure PA_VS_CORE_CLK_40NS_CYCLES Date: Tue, 5 Sep 2023 10:53:58 +0530 Message-Id: <20230905052400.13935-4-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: HzRZZGlrESHxgbYQ20M-I5k4ETKKwAg5 X-Proofpoint-ORIG-GUID: HzRZZGlrESHxgbYQ20M-I5k4ETKKwAg5 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_04,2023-08-31_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 phishscore=0 priorityscore=1501 mlxlogscore=999 suspectscore=0 lowpriorityscore=0 clxscore=1015 impostorscore=0 mlxscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309050048 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org PA_VS_CORE_CLK_40NS_CYCLES attribute represents the required number of Qunipro core clock for 40 nanoseconds. For UFS host controller V4 and above PA_VS_CORE_CLK_40NS_CYCLES needs to be programmed as per frequency of unipro core clk of UFS host controller. Add Support to configure PA_VS_CORE_CLK_40NS_CYCLES for Controller V4 and above to align with the hardware specification and to avoid functionality issues like h8 enter/exit failure, command timeout. 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 | 78 ++++++++++++++++++++++++++++++++++++- drivers/ufs/host/ufs-qcom.h | 12 ++++++ 2 files changed, 89 insertions(+), 1 deletion(-) -- 2.17.1 diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index b2be9ff272a4..a4855f0b93b0 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -1292,6 +1292,77 @@ static void ufs_qcom_exit(struct ufs_hba *hba) phy_exit(host->generic_phy); } +/** + * ufs_qcom_set_clk_40ns_cycles - Configure 40ns clk cycles + * + * @hba: host controller instance + * @cycles_in_1us: No of cycles in 1us to be configured + * + * Returns error if dme get/set configuration for 40ns fails + * and returns zero on success. + */ +static int ufs_qcom_set_clk_40ns_cycles(struct ufs_hba *hba, + u32 cycles_in_1us) +{ + struct ufs_qcom_host *host = ufshcd_get_variant(hba); + u32 cycles_in_40ns; + u32 reg; + int 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 (host->hw_ver.major < 4) + return 0; + + /* + * Generic formulae for cycles_in_40ns = (freq_unipro/25) is not + * applicable for all frequencies. For ex: ceil(37.5 MHz/25) will + * be 2 and ceil(403 MHZ/25) will be 17 whereas Hardware + * specification expect to be 16. Hence use exact hardware spec + * mandated value for cycles_in_40ns instead of calculating using + * generic formulae. + */ + switch (cycles_in_1us) { + case UNIPRO_CORE_CLK_FREQ_403_MHZ: + cycles_in_40ns = 16; + break; + case UNIPRO_CORE_CLK_FREQ_300_MHZ: + cycles_in_40ns = 12; + break; + case UNIPRO_CORE_CLK_FREQ_201_5_MHZ: + cycles_in_40ns = 8; + break; + case UNIPRO_CORE_CLK_FREQ_150_MHZ: + cycles_in_40ns = 6; + break; + case UNIPRO_CORE_CLK_FREQ_100_MHZ: + cycles_in_40ns = 4; + break; + case UNIPRO_CORE_CLK_FREQ_75_MHZ: + cycles_in_40ns = 3; + break; + case UNIPRO_CORE_CLK_FREQ_37_5_MHZ: + cycles_in_40ns = 2; + break; + default: + dev_err(hba->dev, "UNIPRO clk freq %u MHz not supported\n", + cycles_in_1us); + 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 |= cycles_in_40ns; + + return ufshcd_dme_set(hba, UIC_ARG_MIB(PA_VS_CORE_CLK_40NS_CYCLES), reg); +} + static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, bool is_scale_up) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); @@ -1334,9 +1405,14 @@ static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, bool is_scale_up) /* 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); + if (err) + return err; + + /* Configure unipro core clk 40ns attribute */ + return ufs_qcom_set_clk_40ns_cycles(hba, cycles_in_1us); } static int ufs_qcom_clk_scale_up_pre_change(struct ufs_hba *hba) diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h index 3c6ef1259af3..264d429e72fe 100644 --- a/drivers/ufs/host/ufs-qcom.h +++ b/drivers/ufs/host/ufs-qcom.h @@ -132,6 +132,18 @@ enum { #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) +#define PA_VS_CORE_CLK_40NS_CYCLES 0x9007 +#define PA_VS_CORE_CLK_40NS_CYCLES_MASK GENMASK(6, 0) + + +/* QCOM UFS host controller core clk frequencies */ +#define UNIPRO_CORE_CLK_FREQ_37_5_MHZ 38 +#define UNIPRO_CORE_CLK_FREQ_75_MHZ 75 +#define UNIPRO_CORE_CLK_FREQ_100_MHZ 100 +#define UNIPRO_CORE_CLK_FREQ_150_MHZ 150 +#define UNIPRO_CORE_CLK_FREQ_300_MHZ 300 +#define UNIPRO_CORE_CLK_FREQ_201_5_MHZ 202 +#define UNIPRO_CORE_CLK_FREQ_403_MHZ 403 static inline void ufs_qcom_get_controller_revision(struct ufs_hba *hba, From patchwork Tue Sep 5 05:23:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Rawat X-Patchwork-Id: 13374752 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 80C43CA100B for ; Tue, 5 Sep 2023 16:17:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239274AbjIEQHo (ORCPT ); Tue, 5 Sep 2023 12:07:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51192 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351647AbjIEFYa (ORCPT ); Tue, 5 Sep 2023 01:24:30 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 958C4E8; Mon, 4 Sep 2023 22:24:26 -0700 (PDT) Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3854srGq013359; Tue, 5 Sep 2023 05:24:17 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=lNsXw8LlWHNxrOt8TlUasAzMMA23yvnCrmTO0Zvklak=; b=SPkg/LtQ6pYVJfSY6G7bQjQceKPKzmFgTpgmbQy8dkocbtma+Z0BmDkcRc5+HhNJJwwm X8Xvs/GaQC9udVrcTacyRoBDeNt/8VEPgzNNB9VoDJNRZCXJDFzwu/FTeuOwOhaGE3Uv hljM/PLqYyQrWxyECNbRP7kxz9qs8zoihRf2IX9Qm+FhqfSqrshRXVmVGJ4Htrxqvb0c kFKv0n8Hrg0ng/3g/eBqUTAjRLelbzlKIEJReRhYW4MwMFivAOXuMJk6n45VTjoWivVK CRLq7kfmGMWwTvpPPBHAcZz5JyY27EfjNCtB9EKNlgeGvfKb4S5IvTak5AB0Wv+PecJI zQ== 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 3swvj60547-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 05 Sep 2023 05:24:17 +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 3855O9kH029490; Tue, 5 Sep 2023 05:24:09 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 3sux4kjpvw-1; Tue, 05 Sep 2023 05:24:09 +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 3855O8lm029480; Tue, 5 Sep 2023 05:24:09 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 3855O81b029477; Tue, 05 Sep 2023 05:24:08 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 2342877) id 9B364504920; Tue, 5 Sep 2023 10:54:07 +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 4/5] scsi: ufs: qcom: Align programing of unipro clk attributes Date: Tue, 5 Sep 2023 10:53:59 +0530 Message-Id: <20230905052400.13935-5-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: abKX_tOZHitXF2mEgp-8mk3QRzaBbntD X-Proofpoint-ORIG-GUID: abKX_tOZHitXF2mEgp-8mk3QRzaBbntD 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_04,2023-08-31_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 impostorscore=0 mlxlogscore=999 malwarescore=0 adultscore=0 bulkscore=0 priorityscore=1501 mlxscore=0 spamscore=0 phishscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309050048 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Currently CORE_CLK_1US_CYCLES, PA_VS_CORE_CLK_40NS_CYCLES are configured in clk scaling post change ops. This is not aligning to HPG. Move this to clk scaling pre change ops to align completely with 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 a4855f0b93b0..d437c75c8e14 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -1416,12 +1416,6 @@ static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, bool is_scale_up) } 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); @@ -1432,6 +1426,11 @@ static int ufs_qcom_clk_scale_up_post_change(struct ufs_hba *hba) return ufs_qcom_set_core_clk_ctrl(hba, true); } +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 Tue Sep 5 05:24:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Rawat X-Patchwork-Id: 13374648 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 4F47DCA0FF8 for ; Tue, 5 Sep 2023 16:04:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236225AbjIEQEo (ORCPT ); Tue, 5 Sep 2023 12:04:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351685AbjIEFYq (ORCPT ); Tue, 5 Sep 2023 01:24:46 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F5BECCB; Mon, 4 Sep 2023 22:24:42 -0700 (PDT) Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3855OWa5013157; Tue, 5 Sep 2023 05:24:32 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=xf/2nGjSik8b/0EhB8apq7LpsXXUl07A3GKBk2B6mxE=; b=bWDC8MaM9eTQ3Sq/YyMlY8Sf1/FKxA4/bOYdE5dP3l/lN9gGj9E5JcxIE14tkY8vH3f4 ixfrWrsWDovi45CSJXoxSBrWMyXemfDpCP0CwIXsvUdxL34xl9JhEe/k/iGZvMEUuV0V E2HbxSZia2UjYEUQbC5f+nSJPLNZNw36p6Xj3bARzeT8oQcjD6dn7dZ+WjyeiIC21DsW AR+8788Jh7yX9kFK8ywIvOpJgAe+elXa7TVdYBw5IU+RJBDGXQpkgq030bce5sc7bYyd ArzXFJsPUJgmXnpPf+pWktvwVyOTYZb4RQJ+/qeD86br8dO2wyFwYV64e2sXSidQ/+kX yA== 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 3swfae1j0m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 05 Sep 2023 05:24:32 +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 3855O5Pf029359; Tue, 5 Sep 2023 05:24:10 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 3sux4kjpw6-1; Tue, 05 Sep 2023 05:24:10 +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 3855O9qo029500; Tue, 5 Sep 2023 05:24:09 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 3855O9Ti029498; Tue, 05 Sep 2023 05:24:09 +0000 Received: by hu-maiyas-hyd.qualcomm.com (Postfix, from userid 2342877) id A4CD7504921; Tue, 5 Sep 2023 10:54:08 +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 5/5] scsi: ufs: qcom: Configure SYS1CLK_1US_REG for UFS V4 and above Date: Tue, 5 Sep 2023 10:54:00 +0530 Message-Id: <20230905052400.13935-6-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: BAOW-TZ_DwGwrr9DMIYqR1IGvAnWs1dj X-Proofpoint-ORIG-GUID: BAOW-TZ_DwGwrr9DMIYqR1IGvAnWs1dj 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_04,2023-08-31_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 phishscore=0 priorityscore=1501 mlxlogscore=999 suspectscore=0 lowpriorityscore=0 clxscore=1015 impostorscore=0 mlxscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309050048 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org SYS1CLK_1US represents the required number of system 1-clock cycles for one microsecond. UFS Host Controller V4.0 and above mandates to write SYS1CLK_1US_REG register and also these timer configuration needs to be called from clk scaling pre ops as per HPG. Refactor ufs_qcom_cfg_timers and add the below code support to align with HPG. a)Configure SYS1CLK_1US_REG for UFS V4 and above. b)Introduce a new argument is_pre_scale_up for ufs_qcom_cfg_timers to configure SYS1CLK_1US for max freq during prescale and link startup condition. c)Move ufs_qcom_cfg_timers from clk scaling post change ops to clk scaling pre change ops. 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 | 56 ++++++++++++++++++++++++++----------- 1 file changed, 40 insertions(+), 16 deletions(-) -- 2.17.1 diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index d437c75c8e14..dd549363fb2a 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -527,11 +527,20 @@ static int ufs_qcom_hce_enable_notify(struct ufs_hba *hba, return err; } -/* +/** + * ufs_qcom_cfg_timers - Configure ufs qcom cfg timers + * + * @hba: host controller instance + * @gear: Current operating gear + * @hs: current power mode + * @rate: current operating rate (A or B) + * @update_link_startup_timer: indicate if link_start ongoing + * @is_pre_scale_up: flag to check if pre scale up condition. * 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 update_link_startup_timer, + bool is_pre_scale_up) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); struct ufs_clk_info *clki; @@ -562,11 +571,14 @@ 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 + * UFS_REG_PA_LINK_STARTUP_TIMER. + * However UTP controller uses SYS1CLK_1US_REG register for Interrupt * Aggregation logic. - */ - if (ufs_qcom_cap_qunipro(host) && !ufshcd_is_intr_aggr_allowed(hba)) + * It is mandatory to write SYS1CLK_1US_REG register on UFS host + * controller V4.0.0 onwards. + */ + if (host->hw_ver.major < 4 && ufs_qcom_cap_qunipro(host) && + !ufshcd_is_intr_aggr_allowed(hba)) return 0; if (gear == 0) { @@ -575,8 +587,14 @@ 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 */ @@ -678,7 +696,7 @@ 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; @@ -922,7 +940,7 @@ 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__); /* @@ -1418,10 +1436,22 @@ static int ufs_qcom_set_core_clk_ctrl(struct ufs_hba *hba, bool is_scale_up) 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 ret; if (!ufs_qcom_cap_qunipro(host)) return 0; + if (attr) { + ret = ufs_qcom_cfg_timers(hba, attr->gear_rx, + attr->pwr_rx, attr->hs_rate, + false, true); + if (ret) { + dev_err(hba->dev, "%s ufs cfg timer failed\n", + __func__); + return ret; + } + } /* set unipro core clock attributes and clear clock divider */ return ufs_qcom_set_core_clk_ctrl(hba, true); } @@ -1471,7 +1501,6 @@ 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 */ @@ -1501,11 +1530,6 @@ 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); }