From patchwork Tue Jan 3 17:30:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Konrad Dybcio X-Patchwork-Id: 639961 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 66FEDC46467 for ; Tue, 3 Jan 2023 17:31:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237884AbjACRbP (ORCPT ); Tue, 3 Jan 2023 12:31:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237767AbjACRbN (ORCPT ); Tue, 3 Jan 2023 12:31:13 -0500 Received: from mail-lf1-x12b.google.com (mail-lf1-x12b.google.com [IPv6:2a00:1450:4864:20::12b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C327DD4B for ; Tue, 3 Jan 2023 09:31:11 -0800 (PST) Received: by mail-lf1-x12b.google.com with SMTP id b3so46615516lfv.2 for ; Tue, 03 Jan 2023 09:31:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=+3KZjymVYGNEKzZ19NRMYsypVKZnaHDoA/SNQSoa8Wc=; b=X9bIaEsxX3GIUmLjf7DQIcOA/N6q5yqI33odD2sZZGiUWAru2F16e6lhmODeJe8WL5 qRZ/4nAMF5jcsjaOO9iEwJMSUqiMXygEGlqiuMXHrM6IALMBqTCVIxIDsBDVPtI8Wu08 +9Wt7arlEesfukoZqfsuosSZiMLTIqo9LcgBUgaZSnH7bXc5MaA6v5/RKtaYndmcCBMe U0oP5SOEuVln9ifeyuq1vhTcvptL1fY839ZSERkmmFAX16DCFDc/JXxrBk9ynwN7nZFM RBXRcxZSUrijpLVlU1+aTQEMqbrCUl4ivOYbM90c1qRf+/hjMkFKWuVS13Kqe9ukb3Vg O3Dw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=+3KZjymVYGNEKzZ19NRMYsypVKZnaHDoA/SNQSoa8Wc=; b=sHeGoQFzfHEzw6waXWu1cOTCZ1VckduHaaNNPXMlKb3sCFXBsUN1LC9zZqc68ACh5V U1mNnAliApFGquY+Ssg4lzDfjqhJZoX/94a9Q1Bqc3dxy0ElQL6TyYRIm6V7ZfIlvcgi igMe5Eg+cVSqL+opxFY9d51HEA8uueCWkQhLWXfo6ysnVqH6kdRrjtCSEojhA3TRenx8 Mi5ChqjJZQtlite3wQtcbM24QOUO7KlydQCU5ic0iIhW2VRo2l96F8XbBkT+UAbsktz6 DK03I4zm+f38fwCxwPFkzbArLfpDT9sadKuF/WNbd5+UQT2mHRQ6gBEIEMQpPKzB4mzC Rz5g== X-Gm-Message-State: AFqh2kpZd8AgmdCD50IkDKtGI7d5cN6voimpi83KH4oX2LpGNJYSvrmL qfHOFRQTUOwH+IEFcaq2qzlYgA== X-Google-Smtp-Source: AMrXdXuIBGFoSO7Q/Shu0eNSOZ4yVIcx6NAOU0gKlhjEmh01fBRZ+0dsKy738mqRHeWvdml+bvEqFQ== X-Received: by 2002:a05:6512:1043:b0:4cb:d3:b81b with SMTP id c3-20020a056512104300b004cb00d3b81bmr15212735lfb.44.1672767070191; Tue, 03 Jan 2023 09:31:10 -0800 (PST) Received: from localhost.localdomain (abxi45.neoplus.adsl.tpnet.pl. [83.9.2.45]) by smtp.gmail.com with ESMTPSA id o9-20020ac25e29000000b004b4b5da5f80sm4916818lfg.219.2023.01.03.09.31.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Jan 2023 09:31:09 -0800 (PST) From: Konrad Dybcio To: linux-arm-msm@vger.kernel.org, andersson@kernel.org, agross@kernel.org, krzysztof.kozlowski@linaro.org Cc: marijn.suijten@somainline.org, Konrad Dybcio , Georgi Djakov , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Evan Green , Jun Nie , Greg Kroah-Hartman , Brian Masney , Dmitry Baryshkov , Yassine Oudjana Subject: [PATCH 3/4] interconnect: qcom: rpm: make QoS INVALID default, separate out driver data Date: Tue, 3 Jan 2023 18:30:58 +0100 Message-Id: <20230103173059.265856-3-konrad.dybcio@linaro.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230103173059.265856-1-konrad.dybcio@linaro.org> References: <20230103173059.265856-1-konrad.dybcio@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Currently, NOC_QOS_MODE_FIXED is defined as 0x0, which makes it the "default" option (as that's what uninitialized members of partially initialized structs are set to), which should really have been NOC_QOS_MODE_INVALID, and that's what people (wrongly) assumed was the case when .qos.qos_mode was not defined and what really makes the most sense.. That resulted in {port 0, prio 0, areq_prio 0, urg_fwd = false, rpm-voted} QoS being always voted for, because the code flow assumed "hey, it's fixed QoS, so let's just roll with whatever parameters are set" [again, set by partial struct initialization, as these fields were left unfilled by the developers]. That is of course incorrect, and on many of these platforms port 0 is MAS_APPS_PROC, which 9/10 times is supposed to be handled by the ap_owned path, not to mention the rest of the parameters may differ. Arguably, the APPS node is the most important one, next to EBI0.. The modes are defined as preprocessor constants. They are not used anywhere outside the driver or sent to any remote processor outside qcom_icc_set_noc_qos(), which is easily worked around. Separate the type specified in driver data from the value sent to msmbus. Make the former an enum for better mainainability. This is an implicit fix for every SMD RPM ICC driver that didn't explicitly specify NOC_QOS_MODE_INVALID on non-AP_owned nodes that don't have QoS settings. Fixes: 30c8fa3ec61a ("interconnect: qcom: Add MSM8916 interconnect provider driver") Fixes: 6c6fe5d3dc5e ("interconnect: qcom: Add MSM8939 interconnect provider driver") Fixes: 4e60a9568dc6 ("interconnect: qcom: add msm8974 driver") Fixes: 7add937f5222 ("interconnect: qcom: Add MSM8996 interconnect provider driver") Signed-off-by: Konrad Dybcio --- drivers/interconnect/qcom/icc-rpm.c | 23 +++++++++++++---------- drivers/interconnect/qcom/icc-rpm.h | 10 ++++++---- 2 files changed, 19 insertions(+), 14 deletions(-) diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c index a190a0a839c8..8ec1ca17816a 100644 --- a/drivers/interconnect/qcom/icc-rpm.c +++ b/drivers/interconnect/qcom/icc-rpm.c @@ -48,6 +48,10 @@ #define NOC_QOS_MODEn_ADDR(n) (0xc + (n * 0x1000)) #define NOC_QOS_MODEn_MASK 0x3 +#define NOC_QOS_MODE_INVALID_VAL -1 +#define NOC_QOS_MODE_FIXED_VAL 0x0 +#define NOC_QOS_MODE_BYPASS_VAL 0x2 + static int qcom_icc_set_qnoc_qos(struct icc_node *src, u64 max_bw) { struct icc_provider *provider = src->provider; @@ -155,7 +159,7 @@ static int qcom_icc_set_noc_qos(struct icc_node *src, u64 max_bw) struct qcom_icc_provider *qp; struct qcom_icc_node *qn; struct icc_provider *provider; - u32 mode = NOC_QOS_MODE_BYPASS; + u32 mode = NOC_QOS_MODE_BYPASS_VAL; int rc = 0; qn = src->data; @@ -169,18 +173,17 @@ static int qcom_icc_set_noc_qos(struct icc_node *src, u64 max_bw) return 0; } - if (qn->qos.qos_mode != NOC_QOS_MODE_INVALID) - mode = qn->qos.qos_mode; - - if (mode == NOC_QOS_MODE_FIXED) { - dev_dbg(src->provider->dev, "NoC QoS: %s: Set Fixed mode\n", - qn->name); + if (qn->qos.qos_mode == NOC_QOS_MODE_FIXED) { + dev_dbg(src->provider->dev, "NoC QoS: %s: Set Fixed mode\n", qn->name); + mode = NOC_QOS_MODE_FIXED_VAL; rc = qcom_icc_noc_set_qos_priority(qp, &qn->qos); if (rc) return rc; - } else if (mode == NOC_QOS_MODE_BYPASS) { - dev_dbg(src->provider->dev, "NoC QoS: %s: Set Bypass mode\n", - qn->name); + } else if (qn->qos.qos_mode == NOC_QOS_MODE_BYPASS) { + dev_dbg(src->provider->dev, "NoC QoS: %s: Set Bypass mode\n", qn->name); + mode = NOC_QOS_MODE_BYPASS_VAL; + } else { + /* How did we get here? */ } return regmap_update_bits(qp->regmap, diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h index a49af844ab13..8ba1918d7997 100644 --- a/drivers/interconnect/qcom/icc-rpm.h +++ b/drivers/interconnect/qcom/icc-rpm.h @@ -97,10 +97,12 @@ struct qcom_icc_desc { unsigned int qos_offset; }; -/* Valid for both NoC and BIMC */ -#define NOC_QOS_MODE_INVALID -1 -#define NOC_QOS_MODE_FIXED 0x0 -#define NOC_QOS_MODE_BYPASS 0x2 +/* Valid for all bus types */ +enum qos_mode { + NOC_QOS_MODE_INVALID = 0, + NOC_QOS_MODE_FIXED, + NOC_QOS_MODE_BYPASS, +}; int qnoc_probe(struct platform_device *pdev); int qnoc_remove(struct platform_device *pdev);