From patchwork Thu Jun 30 05:57:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leo Yan X-Patchwork-Id: 586255 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 DBB15C43334 for ; Thu, 30 Jun 2022 05:58:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232362AbiF3F6b (ORCPT ); Thu, 30 Jun 2022 01:58:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43112 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232439AbiF3F6X (ORCPT ); Thu, 30 Jun 2022 01:58:23 -0400 Received: from mail-pg1-x531.google.com (mail-pg1-x531.google.com [IPv6:2607:f8b0:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5503BD83 for ; Wed, 29 Jun 2022 22:58:21 -0700 (PDT) Received: by mail-pg1-x531.google.com with SMTP id r66so17513234pgr.2 for ; Wed, 29 Jun 2022 22:58:21 -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=MnrkkkQngsd882Zalre1QkUMe2ArvPJYExWnuAXbTuXsuU2qRxNOE5BVO1bfkeE1Re puXMlzWxtZ35+ltaHCe+oT8MWh8sKhbBMn8NR6K4m8xfG90bn0nlzaTglNagAg3JEE+J UTr/DVFQix0Z5NVe3RO+R8qPtVmQwR7RWW4TBe5IHR+QiUJR4ga6QZLCqR3aVFcqlSWu giLINCkQ8dMjmoqg1R0Ayj7DSzy9TODnxJzSNE767uqfRvp1zjHgtMLXzRiRKH44Sbpp 9v0Psj1iendUbddbUSqzWmcmtr6qg3K8euV3dZi3F7cVY05hPVukCNBooEOKPgCY8pFC SPEA== 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=LnANKdILcXnQ/6DpismYsn0bDGuFjINYbTiidx4uMLb5nD0rtmMhk3oDGSMogMVxHJ SxUUxW6qgVt6RqKalo+0aq4GM+ZJQg4wN4tIrbtdVQ06PG0xqlW0z7Lr5XD4miSg+1pe gtxkt8db91YO0IOSpSNMKCcq2fe3xQsx5xIiyD8lScT4LFf/nBdpZKOICM7B2NbR6mjs ptGdLNAaOQ14JgM6QA2m79son8F4XDo18qOcOBkkYoBHcHy1lhm0WuHYBmLNL05p1nTa 7k8PsLokEr6KyoGCIRrziu4q1s9pCf0PNRfCKfG81weUUWmFyYRQ8q2yonnSZUWmL6em UkjA== X-Gm-Message-State: AJIora+x7yH7hh8ybWxGjvrTjoHrraqqXvgupaO1crNPMRTAV8kdg2Ip gKUYexTXvxRFu/9B/cZmBtffqw== X-Google-Smtp-Source: AGRyM1s0pbVgYymjRA/AoQmD/YyxHMpMN4XE9vLP38BnWLV3SpmI5t3mWSuoR8Dl1JLjDFosnOFnlg== X-Received: by 2002:a63:8949:0:b0:40d:44d6:423e with SMTP id v70-20020a638949000000b0040d44d6423emr6141673pgd.525.1656568700955; Wed, 29 Jun 2022 22:58:20 -0700 (PDT) Received: from leo-build-box.lan ([154.3.32.171]) by smtp.gmail.com with ESMTPSA id b14-20020a17090a550e00b001e31f4cc977sm3309288pji.56.2022.06.29.22.58.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Jun 2022 22:58:20 -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 Cc: Leo Yan Subject: [PATCH v2 4/5] interconnect: qcom: icc-rpm: Support multiple buckets Date: Thu, 30 Jun 2022 13:57:21 +0800 Message-Id: <20220630055723.704605-5-leo.yan@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220630055723.704605-1-leo.yan@linaro.org> References: <20220630055723.704605-1-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;