From patchwork Thu Dec 8 23:18:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Asutosh Das X-Patchwork-Id: 13069010 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 858EDC4167B for ; Thu, 8 Dec 2022 23:19:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230074AbiLHXTz (ORCPT ); Thu, 8 Dec 2022 18:19:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229895AbiLHXTj (ORCPT ); Thu, 8 Dec 2022 18:19:39 -0500 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 03170A0FB6; Thu, 8 Dec 2022 15:19:29 -0800 (PST) Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2B8MlgbL007456; Thu, 8 Dec 2022 23:19:11 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 : mime-version : content-type; s=qcppdkim1; bh=pdKIMJ/UrD6GGAEohrm/VtNxCd41dtCamf/awJloxGM=; b=Udv5OdiRZGN4UYjnt0wkz4MGfyAoRX2VcHONH4atUKZDU+4NYFj6WKNcN8x4UsoXKK32 cVpcgfY/wYwDse0dE0ZZmAvcuDFNbf3Sf/qwlRw13LKpQVpmz5HAFC2+GeAnJpzvIWcc UFA2d5CdVCxIQwsdsmx45gmWavvBZqhqGXsR93RjUhe+HF5vs4MKlQdXO2NqiAizFmdS G69z526IjJe0xgJ1QWHo5V4dedDhT6yyBH+XMGKa3rOiUfDuQVg2YrnfUblt496Wyh/8 /TQKLcQCdAna6E6WZCswk3kcFMvOzUiT5xBVNOdexHFsd/ZyZatld21MKvrLKCJX/lpi EA== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3mbffs9ne4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 08 Dec 2022 23:19:11 +0000 Received: from nasanex01a.na.qualcomm.com (corens_vlan604_snip.qualcomm.com [10.53.140.1]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 2B8NJAML030391 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 8 Dec 2022 23:19:10 GMT Received: from asutoshd-linux1.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Thu, 8 Dec 2022 15:19:10 -0800 From: Asutosh Das To: , , CC: , , , , , , , , , Asutosh Das , , Alim Akhtar , "James E.J. Bottomley" , Matthias Brugger , Jinyoung Choi , Yoshihiro Shimoda , Keoseong Park , open list , "moderated list:ARM/Mediatek SoC support" , "moderated list:ARM/Mediatek SoC support" Subject: [PATCH v11 03/16] ufs: core: Introduce Multi-circular queue capability Date: Thu, 8 Dec 2022 15:18:29 -0800 Message-ID: <49921a49f2ad5b64a7c46535c485f281877baf7a.1670541364.git.quic_asutoshd@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: _b2Tx6UY_jpi75V805qr1CFuiC4t2SLp X-Proofpoint-GUID: _b2Tx6UY_jpi75V805qr1CFuiC4t2SLp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-08_12,2022-12-08_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxscore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 mlxlogscore=999 bulkscore=0 spamscore=0 malwarescore=0 suspectscore=0 clxscore=1015 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2212080192 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add support to check for MCQ capability in the UFSHC. Add a module parameter to disable MCQ if needed. Co-developed-by: Can Guo Signed-off-by: Can Guo Signed-off-by: Asutosh Das Reviewed-by: Bart Van Assche Reviewed-by: Manivannan Sadhasivam Reviewed-by: Stanley Chu --- drivers/ufs/core/ufshcd.c | 26 ++++++++++++++++++++++++++ include/ufs/ufshcd.h | 2 ++ 2 files changed, 28 insertions(+) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 595fd3c..eca15b0 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -89,6 +89,28 @@ /* Polling time to wait for fDeviceInit */ #define FDEVICEINIT_COMPL_TIMEOUT 1500 /* millisecs */ +/* UFSHC 4.0 compliant HC support this mode, refer param_set_mcq_mode() */ +static bool use_mcq_mode = true; + +static int param_set_mcq_mode(const char *val, const struct kernel_param *kp) +{ + int ret; + + ret = param_set_bool(val, kp); + if (ret) + return ret; + + return 0; +} + +static const struct kernel_param_ops mcq_mode_ops = { + .set = param_set_mcq_mode, + .get = param_get_bool, +}; + +module_param_cb(use_mcq_mode, &mcq_mode_ops, &use_mcq_mode, 0644); +MODULE_PARM_DESC(use_mcq_mode, "Control MCQ mode for controllers starting from UFSHCI 4.0. 1 - enable MCQ, 0 - disable MCQ. MCQ is enabled by default"); + #define ufshcd_toggle_vreg(_dev, _vreg, _on) \ ({ \ int _ret; \ @@ -2258,6 +2280,10 @@ static inline int ufshcd_hba_capabilities(struct ufs_hba *hba) if (err) dev_err(hba->dev, "crypto setup failed\n"); + hba->mcq_sup = FIELD_GET(MASK_MCQ_SUPPORT, hba->capabilities); + if (!hba->mcq_sup) + return err; + hba->mcq_capabilities = ufshcd_readl(hba, REG_MCQCAP); hba->ext_iid_sup = FIELD_GET(MASK_EXT_IID_SUPPORT, hba->mcq_capabilities); diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index aec37cb9..70c0f9f 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -832,6 +832,7 @@ struct ufs_hba_monitor { * @complete_put: whether or not to call ufshcd_rpm_put() from inside * ufshcd_resume_complete() * @ext_iid_sup: is EXT_IID is supported by UFSHC + * @mcq_sup: is mcq supported by UFSHC */ struct ufs_hba { void __iomem *mmio_base; @@ -982,6 +983,7 @@ struct ufs_hba { u32 luns_avail; bool complete_put; bool ext_iid_sup; + bool mcq_sup; }; /* Returns true if clocks can be gated. Otherwise false */