From patchwork Mon Jul 4 09:30:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leo Yan X-Patchwork-Id: 587377 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 3E3E5C43334 for ; Mon, 4 Jul 2022 09:32:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233906AbiGDJcO (ORCPT ); Mon, 4 Jul 2022 05:32:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55508 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233637AbiGDJbv (ORCPT ); Mon, 4 Jul 2022 05:31:51 -0400 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B32B4DF91 for ; Mon, 4 Jul 2022 02:30:45 -0700 (PDT) Received: by mail-pj1-x102f.google.com with SMTP id w24so8788645pjg.5 for ; Mon, 04 Jul 2022 02:30:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=6WnlHr6IrouPH/wdi+y79keal1VSMpfo6gBqx2QqUOA=; b=Ifkvm7ECn8RZvQg8nAldNfFTarAyPRTePgZKiAGgjxU3ReqY6ok96bTDPAe0CwYIMt JvZafMLlhbWHqdw7tVHhV8MvsKRraA+NpP/NTJ0U0lteAT4j+ANPtKA6nwkQ3iKP6bs9 I+00IMKWGw9F5416FVk5OrFWKcn2I7EYNYSd74Qfw7Qhl1lIxktOajTK3yp2ghYn6Qo3 Vv6hIRWjTNo02XrS2afkS1kcKqqORAljlG0JlcLSfOJHAsWwYWu977LLnaeu0Gw+DLwr CRTQut88MUo2qef397e7NLmqUK9p9pX4XWaE+oQbOgdid4is2XNpKfPWacPmk3Kcig4/ 6d3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=6WnlHr6IrouPH/wdi+y79keal1VSMpfo6gBqx2QqUOA=; b=TTUJnmegCK5NpDV45gtvltw6mVnD0IwXvyOeOgPtJc98/yk9s+nXttx1wVhN9P/h4p aYohIx0KwlxWHoJXHZmrlsb5imOZvP4q4Y018isnBdb/tJXmHclG9noOivMpJsGj9QCl ZlpPKcx1b41jiN2C3OmxZwrDwl1Z5UVFfYetpW8lchjblhKGnBZIT/RGvea9Y3Ss9GSz IdEwHM+ni8/lwPZCJCGkew4jjXvaS4Ls03UEDJfjNKH9sxKW8Hqi1uWvZ2PEqIwjSDAD IPbplbRs4RoXn07kxezwZtEhZQ0skX5Nu1HOD1kH3edBxuB19wBkVy+ccEkELHqNNh8F pr5A== X-Gm-Message-State: AJIora+87458HhgBr8bdMCuZ9Df4b4JAaD2ij+8JUPk+3ZN7Obg3kBkx /OvGV+hq1fuIpBZEqk1q9iOHjA== X-Google-Smtp-Source: AGRyM1tSu750n4sy7LLfIPs0ul9iYMz4ChNbnddSjJNKcigFusnScVnWxTBSGvUbn9GyGLa0JntRyw== X-Received: by 2002:a17:902:f792:b0:168:e97b:3c05 with SMTP id q18-20020a170902f79200b00168e97b3c05mr35305145pln.94.1656927044995; Mon, 04 Jul 2022 02:30:44 -0700 (PDT) Received: from leo-build-box.lan ([154.3.32.171]) by smtp.gmail.com with ESMTPSA id ms16-20020a17090b235000b001ef81bac701sm2926177pjb.42.2022.07.04.02.30.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Jul 2022 02:30:44 -0700 (PDT) From: Leo Yan To: Andy Gross , Bjorn Andersson , Georgi Djakov , Rob Herring , Krzysztof Kozlowski , linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Bryan O'Donoghue Cc: Leo Yan , Dmitry Baryshkov Subject: [PATCH v3 2/5] interconnect: qcom: Move qcom_icc_xlate_extended() to a common file Date: Mon, 4 Jul 2022 17:30:26 +0800 Message-Id: <20220704093029.1126609-3-leo.yan@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220704093029.1126609-1-leo.yan@linaro.org> References: <20220704093029.1126609-1-leo.yan@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org since there have conflict between two headers icc-rpmh.h and icc-rpm.h, the function qcom_icc_xlate_extended() is declared in icc-rpmh.h thus it cannot be used by icc-rpm driver. Move the function to a new common file icc-common.c so that allow it to be called by multiple drivers. Signed-off-by: Leo Yan Reviewed-by: Dmitry Baryshkov --- drivers/interconnect/qcom/Makefile | 3 +++ drivers/interconnect/qcom/icc-common.c | 34 ++++++++++++++++++++++++++ drivers/interconnect/qcom/icc-common.h | 13 ++++++++++ drivers/interconnect/qcom/icc-rpmh.c | 26 +------------------- drivers/interconnect/qcom/icc-rpmh.h | 1 - drivers/interconnect/qcom/sm8450.c | 1 + 6 files changed, 52 insertions(+), 26 deletions(-) create mode 100644 drivers/interconnect/qcom/icc-common.c create mode 100644 drivers/interconnect/qcom/icc-common.h diff --git a/drivers/interconnect/qcom/Makefile b/drivers/interconnect/qcom/Makefile index 120e279a7427..8e357528185d 100644 --- a/drivers/interconnect/qcom/Makefile +++ b/drivers/interconnect/qcom/Makefile @@ -1,5 +1,8 @@ # SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_INTERCONNECT_QCOM) += interconnect_qcom.o + +interconnect_qcom-y := icc-common.o icc-bcm-voter-objs := bcm-voter.o qnoc-msm8916-objs := msm8916.o qnoc-msm8939-objs := msm8939.o diff --git a/drivers/interconnect/qcom/icc-common.c b/drivers/interconnect/qcom/icc-common.c new file mode 100644 index 000000000000..0822ce207b5d --- /dev/null +++ b/drivers/interconnect/qcom/icc-common.c @@ -0,0 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2022 Linaro Ltd. + */ + +#include +#include + +#include "icc-common.h" + +struct icc_node_data *qcom_icc_xlate_extended(struct of_phandle_args *spec, void *data) +{ + struct icc_node_data *ndata; + struct icc_node *node; + + node = of_icc_xlate_onecell(spec, data); + if (IS_ERR(node)) + return ERR_CAST(node); + + ndata = kzalloc(sizeof(*ndata), GFP_KERNEL); + if (!ndata) + return ERR_PTR(-ENOMEM); + + ndata->node = node; + + if (spec->args_count == 2) + ndata->tag = spec->args[1]; + + if (spec->args_count > 2) + pr_warn("%pOF: Too many arguments, path tag is not parsed\n", spec->np); + + return ndata; +} +EXPORT_SYMBOL_GPL(qcom_icc_xlate_extended); diff --git a/drivers/interconnect/qcom/icc-common.h b/drivers/interconnect/qcom/icc-common.h new file mode 100644 index 000000000000..33bb2c38dff3 --- /dev/null +++ b/drivers/interconnect/qcom/icc-common.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2022 Linaro Ltd. + */ + +#ifndef __DRIVERS_INTERCONNECT_QCOM_ICC_COMMON_H__ +#define __DRIVERS_INTERCONNECT_QCOM_ICC_COMMON_H__ + +#include + +struct icc_node_data *qcom_icc_xlate_extended(struct of_phandle_args *spec, void *data); + +#endif diff --git a/drivers/interconnect/qcom/icc-rpmh.c b/drivers/interconnect/qcom/icc-rpmh.c index 8acc8e67a332..114bb8f64573 100644 --- a/drivers/interconnect/qcom/icc-rpmh.c +++ b/drivers/interconnect/qcom/icc-rpmh.c @@ -11,6 +11,7 @@ #include #include "bcm-voter.h" +#include "icc-common.h" #include "icc-rpmh.h" /** @@ -100,31 +101,6 @@ int qcom_icc_set(struct icc_node *src, struct icc_node *dst) } EXPORT_SYMBOL_GPL(qcom_icc_set); -struct icc_node_data *qcom_icc_xlate_extended(struct of_phandle_args *spec, void *data) -{ - struct icc_node_data *ndata; - struct icc_node *node; - - node = of_icc_xlate_onecell(spec, data); - if (IS_ERR(node)) - return ERR_CAST(node); - - ndata = kzalloc(sizeof(*ndata), GFP_KERNEL); - if (!ndata) - return ERR_PTR(-ENOMEM); - - ndata->node = node; - - if (spec->args_count == 2) - ndata->tag = spec->args[1]; - - if (spec->args_count > 2) - pr_warn("%pOF: Too many arguments, path tag is not parsed\n", spec->np); - - return ndata; -} -EXPORT_SYMBOL_GPL(qcom_icc_xlate_extended); - /** * qcom_icc_bcm_init - populates bcm aux data and connect qnodes * @bcm: bcm to be initialized diff --git a/drivers/interconnect/qcom/icc-rpmh.h b/drivers/interconnect/qcom/icc-rpmh.h index d29929461c17..04391c1ba465 100644 --- a/drivers/interconnect/qcom/icc-rpmh.h +++ b/drivers/interconnect/qcom/icc-rpmh.h @@ -131,7 +131,6 @@ struct qcom_icc_desc { int qcom_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, u32 peak_bw, u32 *agg_avg, u32 *agg_peak); int qcom_icc_set(struct icc_node *src, struct icc_node *dst); -struct icc_node_data *qcom_icc_xlate_extended(struct of_phandle_args *spec, void *data); int qcom_icc_bcm_init(struct qcom_icc_bcm *bcm, struct device *dev); void qcom_icc_pre_aggregate(struct icc_node *node); int qcom_icc_rpmh_probe(struct platform_device *pdev); diff --git a/drivers/interconnect/qcom/sm8450.c b/drivers/interconnect/qcom/sm8450.c index 7e3d372b712f..e821fd0b2f66 100644 --- a/drivers/interconnect/qcom/sm8450.c +++ b/drivers/interconnect/qcom/sm8450.c @@ -12,6 +12,7 @@ #include #include "bcm-voter.h" +#include "icc-common.h" #include "icc-rpmh.h" #include "sm8450.h" From patchwork Mon Jul 4 09:30:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leo Yan X-Patchwork-Id: 587376 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 C9B59C43334 for ; Mon, 4 Jul 2022 09:32:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233709AbiGDJcc (ORCPT ); Mon, 4 Jul 2022 05:32:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56498 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233785AbiGDJb5 (ORCPT ); Mon, 4 Jul 2022 05:31:57 -0400 Received: from mail-pf1-x432.google.com (mail-pf1-x432.google.com [IPv6:2607:f8b0:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A9E2DFBF for ; Mon, 4 Jul 2022 02:30:51 -0700 (PDT) Received: by mail-pf1-x432.google.com with SMTP id k9so8450544pfg.5 for ; Mon, 04 Jul 2022 02:30:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=YZw35i4tD7dQYkHhZWLzGB0BrtXzLncPfNzT7OZ+gHQ=; b=zJLfFWR50xifb017AbS4VLlMX9D5KIZO7zGbryzvst11rcydT9/znH6sJj5AqXVOb5 /nIgm3nUcfeWghxNPrldN9qyh7+8xfKW5d+PooJ/QDD2dkBHp55fMHlKVlaOSyiDoicN MtyUT3a2vrIwZYhdD/JpcKYfrLtg0G7P4QmNdaK3tD4JSje1eoGdU8Hj3hi6YPqWgyWi vxglTCiwSuzKdvvX2A5w/5eBhx3u8J8SNNkrd1/IE9WxR9h+UTbDb8Ez3uFcTvMKtqcm 6u8Zk4kk4NMYRr/WlJeQN5eb8BhX1sZNu8japfKHad5YmwogJ+UurSBF2v+fOZQrH1/c T5fQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=YZw35i4tD7dQYkHhZWLzGB0BrtXzLncPfNzT7OZ+gHQ=; b=qSBFF07h7PUyZ08oLDi39bzwY1GSJerzj+w8HryuxK+qqfezqNu+eYJvwT9wYOd1xv O79Rh9jOmGLP2Q1inz54nXxHyXtkojkJbzjIHEh7+djkdTGjhtE+rOMAREfdetrSRbIE gllHMKcimm5O5Hew95/pTu3SdrZ9QBDV0A9P7XKD13S1ih33bYKMOGcJIOj49HBNFnGu C4nYEAIYYLHz0iycN3X3hAzJD2+6/+/HoIRB5ardTLwHscsSVK7djvgbK+5IvSCISZ/q O2JquAB4eg/YHCfQ/OB4GJC/4tlxr9nbfir8PSwcJ6WdYbXr42GcgXtDZI5XKvmKLhr/ 0Eyg== X-Gm-Message-State: AJIora9C/7zO5KvWxOxm+uVT+WdjhI1fEqegFqUg78U3ZIwQ7D3se3tW W4QAJ02MdofklJqcRGrF0NfjlQ== X-Google-Smtp-Source: AGRyM1scHocx0l8bITgGQYxRUu6bQxD8HFtyLboo6Uj6MK+WxTdK+yuP2/xv+Dhbg8EdtoH4ZbTfKA== X-Received: by 2002:a63:481a:0:b0:411:7951:cbcd with SMTP id v26-20020a63481a000000b004117951cbcdmr24429313pga.66.1656927050901; Mon, 04 Jul 2022 02:30:50 -0700 (PDT) Received: from leo-build-box.lan ([154.3.32.171]) by smtp.gmail.com with ESMTPSA id ms16-20020a17090b235000b001ef81bac701sm2926177pjb.42.2022.07.04.02.30.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Jul 2022 02:30:50 -0700 (PDT) From: Leo Yan To: Andy Gross , Bjorn Andersson , Georgi Djakov , Rob Herring , Krzysztof Kozlowski , linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Bryan O'Donoghue Cc: Leo Yan Subject: [PATCH v3 4/5] interconnect: qcom: icc-rpm: Support multiple buckets Date: Mon, 4 Jul 2022 17:30:28 +0800 Message-Id: <20220704093029.1126609-5-leo.yan@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220704093029.1126609-1-leo.yan@linaro.org> References: <20220704093029.1126609-1-leo.yan@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The current interconnect rpm driver uses a single aggregate bandwidth to calculate the clock rates for both active and sleep clocks; therefore, it has no chance to separate bandwidth requests for these two kinds of clocks. This patch studies the implementation from interconnect rpmh driver to support multiple buckets. The rpmh driver provides three buckets for AMC, WAKE, and SLEEP; this driver only needs to use WAKE and SLEEP buckets, but we keep the same way with rpmh driver, this can allow us to reuse the DT binding and avoid to define duplicated data structures. This patch introduces two callbacks: qcom_icc_pre_bw_aggregate() is used to clean up bucket values before aggregate bandwidth requests, and qcom_icc_bw_aggregate() is to aggregate bandwidth for buckets. Signed-off-by: Leo Yan --- drivers/interconnect/qcom/icc-rpm.c | 51 ++++++++++++++++++++++++++++- drivers/interconnect/qcom/icc-rpm.h | 6 ++++ 2 files changed, 56 insertions(+), 1 deletion(-) diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c index 8c9d5cc7276c..b025fc6b97c9 100644 --- a/drivers/interconnect/qcom/icc-rpm.c +++ b/drivers/interconnect/qcom/icc-rpm.c @@ -254,6 +254,54 @@ static int __qcom_icc_set(struct icc_node *n, struct qcom_icc_node *qn, return 0; } +/** + * qcom_icc_rpm_pre_bw_aggregate - cleans up values before re-aggregate requests + * @node: icc node to operate on + */ +static void qcom_icc_pre_bw_aggregate(struct icc_node *node) +{ + struct qcom_icc_node *qn; + size_t i; + + qn = node->data; + for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) { + qn->sum_avg[i] = 0; + qn->max_peak[i] = 0; + } +} + +/** + * qcom_icc_bw_aggregate - aggregate bw for buckets indicated by tag + * @node: node to aggregate + * @tag: tag to indicate which buckets to aggregate + * @avg_bw: new bw to sum aggregate + * @peak_bw: new bw to max aggregate + * @agg_avg: existing aggregate avg bw val + * @agg_peak: existing aggregate peak bw val + */ +static int qcom_icc_bw_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, + u32 peak_bw, u32 *agg_avg, u32 *agg_peak) +{ + size_t i; + struct qcom_icc_node *qn; + + qn = node->data; + + if (!tag) + tag = QCOM_ICC_TAG_ALWAYS; + + for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) { + if (tag & BIT(i)) { + qn->sum_avg[i] += avg_bw; + qn->max_peak[i] = max_t(u32, qn->max_peak[i], peak_bw); + } + } + + *agg_avg += avg_bw; + *agg_peak = max_t(u32, *agg_peak, peak_bw); + return 0; +} + static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) { struct qcom_icc_provider *qp; @@ -414,7 +462,8 @@ int qnoc_probe(struct platform_device *pdev) INIT_LIST_HEAD(&provider->nodes); provider->dev = dev; provider->set = qcom_icc_set; - provider->aggregate = icc_std_aggregate; + provider->pre_aggregate = qcom_icc_pre_bw_aggregate; + provider->aggregate = qcom_icc_bw_aggregate; provider->xlate_extended = qcom_icc_xlate_extended; provider->data = data; diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h index ebee9009301e..a49af844ab13 100644 --- a/drivers/interconnect/qcom/icc-rpm.h +++ b/drivers/interconnect/qcom/icc-rpm.h @@ -6,6 +6,8 @@ #ifndef __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H #define __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H +#include + #define RPM_BUS_MASTER_REQ 0x73616d62 #define RPM_BUS_SLAVE_REQ 0x766c7362 @@ -65,6 +67,8 @@ struct qcom_icc_qos { * @links: an array of nodes where we can go next while traversing * @num_links: the total number of @links * @buswidth: width of the interconnect between a node and the bus (bytes) + * @sum_avg: current sum aggregate value of all avg bw requests + * @max_peak: current max aggregate value of all peak bw requests * @mas_rpm_id: RPM id for devices that are bus masters * @slv_rpm_id: RPM id for devices that are bus slaves * @qos: NoC QoS setting parameters @@ -75,6 +79,8 @@ struct qcom_icc_node { const u16 *links; u16 num_links; u16 buswidth; + u64 sum_avg[QCOM_ICC_NUM_BUCKETS]; + u64 max_peak[QCOM_ICC_NUM_BUCKETS]; int mas_rpm_id; int slv_rpm_id; struct qcom_icc_qos qos; From patchwork Mon Jul 4 09:30:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leo Yan X-Patchwork-Id: 587375 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 34A14C433EF for ; Mon, 4 Jul 2022 09:34:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233958AbiGDJeY (ORCPT ); Mon, 4 Jul 2022 05:34:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55354 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233869AbiGDJb7 (ORCPT ); Mon, 4 Jul 2022 05:31:59 -0400 Received: from mail-pf1-x429.google.com (mail-pf1-x429.google.com [IPv6:2607:f8b0:4864:20::429]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6FC67CE0A for ; Mon, 4 Jul 2022 02:30:54 -0700 (PDT) Received: by mail-pf1-x429.google.com with SMTP id f85so4626429pfa.3 for ; Mon, 04 Jul 2022 02:30:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=mOcKN2QE8NoS+NlXFqyzvr6uXu60h5tTF9oQlF/WJLc=; b=KILEUB0HZOxwkq5/XBeqjn/uei8YrkNrsJVZViPmOdE2EraFxs3gPVlS9vaVFq0XsV xyilJcHWtyG1L6ky2NJLYlqtWCz5pz9rwz8N2XqcIN6xzN5JMbDz4j45LRocgI6xjf5Q xPiPdfHH1DUNY6GGxTSz6SlQLuWWdgw7Md/KsLQ0v8utLsy0q+ZMkq+BbxntG8pZ+hSa cd4cbVLrBZTXVniEh8tK7lRVrIPmjEqGB6bKca0jeduHPKZ/X1OTqn8CgHgtA4WWReS6 e1pUIl2I5ma9I2/6Mjx5WNsCc0XSG+gYr4I/GyOYsEdOj4FRn9hJR7qiqRpmf2nf2Db2 gegg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=mOcKN2QE8NoS+NlXFqyzvr6uXu60h5tTF9oQlF/WJLc=; b=3CwRVP73QzUjp+W+xyUedf5EK6JaKw1DHEcKiSf+efhRqdHyM5p7ktwj5GulExuiDE NaA1QM1BOOuLAghNhsq02pgCoFaOws1pJYhFxaeXqG1ATNpDJn5fPXMVwzil0cKDn6Eg 61b3IlqyPdvAHTnxBPDMosWgmfW9a0Ue9mR85/TwtN3+pOcubN07QSnn9OxONAqr+xdT HdPtE3LJ4/Lc9ncbvcs7YRN3aVNc9pBCW1h7To+2VbuWMa/jMZByuNZpFgkUARYQLDKC PCrNyFqAvIoTKDfMmJWbaJcDq1ZWswIXYZlJsh3Rnjj3UlzPSEfvwLKOdkhRxPX6yll3 Wvlw== X-Gm-Message-State: AJIora8DbFt/F1AkyOfVRLhZ1MTKpaiehi9Var7x3PHu4eP6NJ0n/c3P FwbZE1RBoPzKOH+0f73VLkOGpw== X-Google-Smtp-Source: AGRyM1vbOAdyX1y53+MovHgyFoSWwnefAVPm2My0x0WH3rIth0QFaye33BFc8w+KNPH6F45CqTuocg== X-Received: by 2002:a63:69c9:0:b0:411:994d:1e12 with SMTP id e192-20020a6369c9000000b00411994d1e12mr20645259pgc.383.1656927053749; Mon, 04 Jul 2022 02:30:53 -0700 (PDT) Received: from leo-build-box.lan ([154.3.32.171]) by smtp.gmail.com with ESMTPSA id ms16-20020a17090b235000b001ef81bac701sm2926177pjb.42.2022.07.04.02.30.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Jul 2022 02:30:53 -0700 (PDT) From: Leo Yan To: Andy Gross , Bjorn Andersson , Georgi Djakov , Rob Herring , Krzysztof Kozlowski , linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Bryan O'Donoghue Cc: Leo Yan Subject: [PATCH v3 5/5] interconnect: qcom: icc-rpm: Set bandwidth and clock for bucket values Date: Mon, 4 Jul 2022 17:30:29 +0800 Message-Id: <20220704093029.1126609-6-leo.yan@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220704093029.1126609-1-leo.yan@linaro.org> References: <20220704093029.1126609-1-leo.yan@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org This commit uses buckets for support bandwidth and clock rates. It introduces a new function qcom_icc_bus_aggregate() to calculate the aggregate average and peak bandwidths for every bucket, and also it calculates the maximum aggregate values across all buckets. The maximum aggregate values are used to calculate the final bandwidth requests. And we can set the clock rate per bucket, we use SLEEP bucket as default bucket if a platform doesn't enable the interconnect path tags in DT binding; otherwise, we use WAKE bucket to set active clock and use SLEEP bucket for other clocks. So far we don't use AMC bucket. Signed-off-by: Leo Yan --- drivers/interconnect/qcom/icc-rpm.c | 80 ++++++++++++++++++++++++----- 1 file changed, 67 insertions(+), 13 deletions(-) diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c index b025fc6b97c9..4b932eb807c7 100644 --- a/drivers/interconnect/qcom/icc-rpm.c +++ b/drivers/interconnect/qcom/icc-rpm.c @@ -302,18 +302,62 @@ static int qcom_icc_bw_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, return 0; } +/** + * qcom_icc_bus_aggregate - aggregate bandwidth by traversing all nodes + * @provider: generic interconnect provider + * @agg_avg: an array for aggregated average bandwidth of buckets + * @agg_peak: an array for aggregated peak bandwidth of buckets + * @max_agg_avg: pointer to max value of aggregated average bandwidth + * @max_agg_peak: pointer to max value of aggregated peak bandwidth + */ +static void qcom_icc_bus_aggregate(struct icc_provider *provider, + u64 *agg_avg, u64 *agg_peak, + u64 *max_agg_avg, u64 *max_agg_peak) +{ + struct icc_node *node; + struct qcom_icc_node *qn; + int i; + + /* Initialise aggregate values */ + for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) { + agg_avg[i] = 0; + agg_peak[i] = 0; + } + + *max_agg_avg = 0; + *max_agg_peak = 0; + + /* + * Iterate nodes on the interconnect and aggregate bandwidth + * requests for every bucket. + */ + list_for_each_entry(node, &provider->nodes, node_list) { + qn = node->data; + for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) { + agg_avg[i] += qn->sum_avg[i]; + agg_peak[i] = max_t(u64, agg_peak[i], qn->max_peak[i]); + } + } + + /* Find maximum values across all buckets */ + for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) { + *max_agg_avg = max_t(u64, *max_agg_avg, agg_avg[i]); + *max_agg_peak = max_t(u64, *max_agg_peak, agg_peak[i]); + } +} + static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) { struct qcom_icc_provider *qp; struct qcom_icc_node *src_qn = NULL, *dst_qn = NULL; struct icc_provider *provider; - struct icc_node *n; u64 sum_bw; u64 max_peak_bw; u64 rate; - u32 agg_avg = 0; - u32 agg_peak = 0; + u64 agg_avg[QCOM_ICC_NUM_BUCKETS], agg_peak[QCOM_ICC_NUM_BUCKETS]; + u64 max_agg_avg, max_agg_peak; int ret, i; + int bucket; src_qn = src->data; if (dst) @@ -321,12 +365,11 @@ static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) provider = src->provider; qp = to_qcom_provider(provider); - list_for_each_entry(n, &provider->nodes, node_list) - provider->aggregate(n, 0, n->avg_bw, n->peak_bw, - &agg_avg, &agg_peak); + qcom_icc_bus_aggregate(provider, agg_avg, agg_peak, &max_agg_avg, + &max_agg_peak); - sum_bw = icc_units_to_bps(agg_avg); - max_peak_bw = icc_units_to_bps(agg_peak); + sum_bw = icc_units_to_bps(max_agg_avg); + max_peak_bw = icc_units_to_bps(max_agg_peak); ret = __qcom_icc_set(src, src_qn, sum_bw); if (ret) @@ -337,12 +380,23 @@ static int qcom_icc_set(struct icc_node *src, struct icc_node *dst) return ret; } - rate = max(sum_bw, max_peak_bw); - - do_div(rate, src_qn->buswidth); - rate = min_t(u64, rate, LONG_MAX); - for (i = 0; i < qp->num_clks; i++) { + /* + * Use WAKE bucket for active clock, otherwise, use SLEEP bucket + * for other clocks. If a platform doesn't set interconnect + * path tags, by default use sleep bucket for all clocks. + * + * Note, AMC bucket is not supported yet. + */ + if (!strcmp(qp->bus_clks[i].id, "bus_a")) + bucket = QCOM_ICC_BUCKET_WAKE; + else + bucket = QCOM_ICC_BUCKET_SLEEP; + + rate = icc_units_to_bps(max(agg_avg[bucket], agg_peak[bucket])); + do_div(rate, src_qn->buswidth); + rate = min_t(u64, rate, LONG_MAX); + if (qp->bus_clk_rate[i] == rate) continue;