From patchwork Thu Sep 3 19:21:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Tipton X-Patchwork-Id: 11754603 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3B4C114E5 for ; Thu, 3 Sep 2020 19:22:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1DBAE2098B for ; Thu, 3 Sep 2020 19:22:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="ZY3As8p4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729181AbgICTWo (ORCPT ); Thu, 3 Sep 2020 15:22:44 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:18310 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729328AbgICTWl (ORCPT ); Thu, 3 Sep 2020 15:22:41 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1599160960; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=TwIJpxRouKmM2OseNIA08YDmu9GtOwzMuftNT1neRqo=; b=ZY3As8p4RA7CqgxcVasLWJ9Ra2NshH77tegPpV2URw5nDXrRPzCXAXtoQSrF9Ampp699D4Zl orV701cXZIJl0QdF9utfdW2gDD4ogg/+RjsfvFE9y6AvDBHu3lCKvKm9kLNrrKr8iCLVOZju Oni263I3watuZH1nkteo0iqd5ok= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n01.prod.us-east-1.postgun.com with SMTP id 5f514263ba408b30ceb3b41b (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 03 Sep 2020 19:22:11 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 27E6DC433A1; Thu, 3 Sep 2020 19:22:11 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mdtipton-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: mdtipton) by smtp.codeaurora.org (Postfix) with ESMTPSA id 2CE9CC433CB; Thu, 3 Sep 2020 19:22:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 2CE9CC433CB Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=mdtipton@codeaurora.org From: Mike Tipton To: georgi.djakov@linaro.org Cc: bjorn.andersson@linaro.org, agross@kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mike Tipton Subject: [PATCH v4 1/6] interconnect: qcom: Fix small BW votes being truncated to zero Date: Thu, 3 Sep 2020 12:21:44 -0700 Message-Id: <20200903192149.30385-2-mdtipton@codeaurora.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20200903192149.30385-1-mdtipton@codeaurora.org> References: <20200903192149.30385-1-mdtipton@codeaurora.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Small BW votes that translate to less than a single BCM unit are currently truncated to zero. Ensure that non-zero BW requests always result in at least a vote of 1 to BCM. Fixes: 976daac4a1c5 ("interconnect: qcom: Consolidate interconnect RPMh support") Signed-off-by: Mike Tipton --- drivers/interconnect/qcom/bcm-voter.c | 27 +++++++++++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/drivers/interconnect/qcom/bcm-voter.c b/drivers/interconnect/qcom/bcm-voter.c index a3d2ef1d9903..609db9c95fd7 100644 --- a/drivers/interconnect/qcom/bcm-voter.c +++ b/drivers/interconnect/qcom/bcm-voter.c @@ -52,8 +52,20 @@ static int cmp_vcd(void *priv, struct list_head *a, struct list_head *b) return 1; } +static u64 bcm_div(u64 num, u32 base) +{ + /* Ensure that small votes aren't lost. */ + if (num && num < base) + return 1; + + do_div(num, base); + + return num; +} + static void bcm_aggregate(struct qcom_icc_bcm *bcm) { + struct qcom_icc_node *node; size_t i, bucket; u64 agg_avg[QCOM_ICC_NUM_BUCKETS] = {0}; u64 agg_peak[QCOM_ICC_NUM_BUCKETS] = {0}; @@ -61,22 +73,21 @@ static void bcm_aggregate(struct qcom_icc_bcm *bcm) for (bucket = 0; bucket < QCOM_ICC_NUM_BUCKETS; bucket++) { for (i = 0; i < bcm->num_nodes; i++) { - temp = bcm->nodes[i]->sum_avg[bucket] * bcm->aux_data.width; - do_div(temp, bcm->nodes[i]->buswidth * bcm->nodes[i]->channels); + node = bcm->nodes[i]; + temp = bcm_div(node->sum_avg[bucket] * bcm->aux_data.width, + node->buswidth * node->channels); agg_avg[bucket] = max(agg_avg[bucket], temp); - temp = bcm->nodes[i]->max_peak[bucket] * bcm->aux_data.width; - do_div(temp, bcm->nodes[i]->buswidth); + temp = bcm_div(node->max_peak[bucket] * bcm->aux_data.width, + node->buswidth); agg_peak[bucket] = max(agg_peak[bucket], temp); } temp = agg_avg[bucket] * 1000ULL; - do_div(temp, bcm->aux_data.unit); - bcm->vote_x[bucket] = temp; + bcm->vote_x[bucket] = bcm_div(temp, bcm->aux_data.unit); temp = agg_peak[bucket] * 1000ULL; - do_div(temp, bcm->aux_data.unit); - bcm->vote_y[bucket] = temp; + bcm->vote_y[bucket] = bcm_div(temp, bcm->aux_data.unit); } if (bcm->keepalive && bcm->vote_x[QCOM_ICC_BUCKET_AMC] == 0 && From patchwork Thu Sep 3 19:21:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Tipton X-Patchwork-Id: 11754583 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6768F109A for ; Thu, 3 Sep 2020 19:22:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4DD50208FE for ; Thu, 3 Sep 2020 19:22:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="SyHUyJZG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729118AbgICTWO (ORCPT ); Thu, 3 Sep 2020 15:22:14 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:42301 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729042AbgICTWO (ORCPT ); Thu, 3 Sep 2020 15:22:14 -0400 DKIM-Signature: a=rsa-sha256; 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Thu, 3 Sep 2020 19:22:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org ADE55C43391 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=mdtipton@codeaurora.org From: Mike Tipton To: georgi.djakov@linaro.org Cc: bjorn.andersson@linaro.org, agross@kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mike Tipton , Rob Herring Subject: [PATCH v4 2/6] dt-bindings: interconnect: Add generic qcom bindings Date: Thu, 3 Sep 2020 12:21:45 -0700 Message-Id: <20200903192149.30385-3-mdtipton@codeaurora.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20200903192149.30385-1-mdtipton@codeaurora.org> References: <20200903192149.30385-1-mdtipton@codeaurora.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add generic qcom interconnect bindings that are common across platforms. In particular, these include QCOM_ICC_TAG_* macros that clients can use when calling icc_set_tag(). Signed-off-by: Mike Tipton Acked-by: Rob Herring --- drivers/interconnect/qcom/icc-rpmh.h | 18 ++------------ include/dt-bindings/interconnect/qcom,icc.h | 26 +++++++++++++++++++++ 2 files changed, 28 insertions(+), 16 deletions(-) create mode 100644 include/dt-bindings/interconnect/qcom,icc.h diff --git a/drivers/interconnect/qcom/icc-rpmh.h b/drivers/interconnect/qcom/icc-rpmh.h index 903d25e61984..cb736b745e1a 100644 --- a/drivers/interconnect/qcom/icc-rpmh.h +++ b/drivers/interconnect/qcom/icc-rpmh.h @@ -6,6 +6,8 @@ #ifndef __DRIVERS_INTERCONNECT_QCOM_ICC_RPMH_H__ #define __DRIVERS_INTERCONNECT_QCOM_ICC_RPMH_H__ +#include + #define to_qcom_provider(_provider) \ container_of(_provider, struct qcom_icc_provider, provider) @@ -44,22 +46,6 @@ struct bcm_db { #define MAX_BCM_PER_NODE 3 #define MAX_VCD 10 -/* - * The AMC bucket denotes constraints that are applied to hardware when - * icc_set_bw() completes, whereas the WAKE and SLEEP constraints are applied - * when the execution environment transitions between active and low power mode. - */ -#define QCOM_ICC_BUCKET_AMC 0 -#define QCOM_ICC_BUCKET_WAKE 1 -#define QCOM_ICC_BUCKET_SLEEP 2 -#define QCOM_ICC_NUM_BUCKETS 3 -#define QCOM_ICC_TAG_AMC BIT(QCOM_ICC_BUCKET_AMC) -#define QCOM_ICC_TAG_WAKE BIT(QCOM_ICC_BUCKET_WAKE) -#define QCOM_ICC_TAG_SLEEP BIT(QCOM_ICC_BUCKET_SLEEP) -#define QCOM_ICC_TAG_ACTIVE_ONLY (QCOM_ICC_TAG_AMC | QCOM_ICC_TAG_WAKE) -#define QCOM_ICC_TAG_ALWAYS (QCOM_ICC_TAG_AMC | QCOM_ICC_TAG_WAKE |\ - QCOM_ICC_TAG_SLEEP) - /** * struct qcom_icc_node - Qualcomm specific interconnect nodes * @name: the node name used in debugfs diff --git a/include/dt-bindings/interconnect/qcom,icc.h b/include/dt-bindings/interconnect/qcom,icc.h new file mode 100644 index 000000000000..cd34f36daaaa --- /dev/null +++ b/include/dt-bindings/interconnect/qcom,icc.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2020, The Linux Foundation. All rights reserved. + */ + +#ifndef __DT_BINDINGS_INTERCONNECT_QCOM_ICC_H +#define __DT_BINDINGS_INTERCONNECT_QCOM_ICC_H + +/* + * The AMC bucket denotes constraints that are applied to hardware when + * icc_set_bw() completes, whereas the WAKE and SLEEP constraints are applied + * when the execution environment transitions between active and low power mode. + */ +#define QCOM_ICC_BUCKET_AMC 0 +#define QCOM_ICC_BUCKET_WAKE 1 +#define QCOM_ICC_BUCKET_SLEEP 2 +#define QCOM_ICC_NUM_BUCKETS 3 + +#define QCOM_ICC_TAG_AMC (1 << QCOM_ICC_BUCKET_AMC) +#define QCOM_ICC_TAG_WAKE (1 << QCOM_ICC_BUCKET_WAKE) +#define QCOM_ICC_TAG_SLEEP (1 << QCOM_ICC_BUCKET_SLEEP) +#define QCOM_ICC_TAG_ACTIVE_ONLY (QCOM_ICC_TAG_AMC | QCOM_ICC_TAG_WAKE) +#define QCOM_ICC_TAG_ALWAYS (QCOM_ICC_TAG_AMC | QCOM_ICC_TAG_WAKE |\ + QCOM_ICC_TAG_SLEEP) + +#endif From patchwork Thu Sep 3 19:21:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Tipton X-Patchwork-Id: 11754607 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2A17B109A for ; Thu, 3 Sep 2020 19:22:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1194A208CA for ; Thu, 3 Sep 2020 19:22:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="ZqV168JG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729311AbgICTWj (ORCPT ); Thu, 3 Sep 2020 15:22:39 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:62996 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729184AbgICTWO (ORCPT ); Thu, 3 Sep 2020 15:22:14 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1599160934; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=qLLtxNHJYrYCngVI61j10KgSkzJBI9yW9H6Se+IKbwg=; b=ZqV168JGS2Jt7Ru+1+4KgZg2ipSpUXLfh2WfDZVx0O7dkvJACR3GjsCufQkKMdKSZNskvadQ LiO+/D8o4+eiMxV3A/Yxhvsy9C2w0XSI/rwpIbgH7Z22GdaTIRKzHgV0z3WO1fx9lOyz7C0N 0jM5YBhxwphYQARPWutZvHt7bTk= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n01.prod.us-east-1.postgun.com with SMTP id 5f51426532925f96e1dc8bd0 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 03 Sep 2020 19:22:13 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 2407AC4339C; Thu, 3 Sep 2020 19:22:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mdtipton-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: mdtipton) by smtp.codeaurora.org (Postfix) with ESMTPSA id 48570C433C8; Thu, 3 Sep 2020 19:22:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 48570C433C8 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=mdtipton@codeaurora.org From: Mike Tipton To: georgi.djakov@linaro.org Cc: bjorn.andersson@linaro.org, agross@kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mike Tipton , Rob Herring Subject: [PATCH v4 3/6] dt-bindings: interconnect: Add property to set BCM TCS wait behavior Date: Thu, 3 Sep 2020 12:21:46 -0700 Message-Id: <20200903192149.30385-4-mdtipton@codeaurora.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20200903192149.30385-1-mdtipton@codeaurora.org> References: <20200903192149.30385-1-mdtipton@codeaurora.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add "qcom,tcs-wait" property to set which TCS should wait for completion when triggering. Signed-off-by: Mike Tipton Reviewed-by: Rob Herring --- .../bindings/interconnect/qcom,bcm-voter.yaml | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/Documentation/devicetree/bindings/interconnect/qcom,bcm-voter.yaml b/Documentation/devicetree/bindings/interconnect/qcom,bcm-voter.yaml index 5971fc1df08d..e23df4836c6f 100644 --- a/Documentation/devicetree/bindings/interconnect/qcom,bcm-voter.yaml +++ b/Documentation/devicetree/bindings/interconnect/qcom,bcm-voter.yaml @@ -21,6 +21,23 @@ properties: enum: - qcom,bcm-voter + qcom,tcs-wait: + description: | + Optional mask of which TCSs (Triggered Command Sets) wait for completion + upon triggering. If not specified, then the AMC and WAKE sets wait for + completion. The mask bits are available in the QCOM_ICC_TAG_* defines. + + The AMC TCS is triggered immediately when icc_set_bw() is called. The + WAKE/SLEEP TCSs are triggered when the RSC transitions between active and + sleep modes. + + In most cases, it's necessary to wait in both the AMC and WAKE sets to + ensure resources are available before use. If a specific RSC and its use + cases can ensure sufficient delay by other means, then this can be + overridden to reduce latencies. + + $ref: /schemas/types.yaml#/definitions/uint32 + required: - compatible @@ -39,7 +56,10 @@ examples: # as defined in Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt - | + #include + disp_bcm_voter: bcm_voter { compatible = "qcom,bcm-voter"; + qcom,tcs-wait = ; }; ... From patchwork Thu Sep 3 19:21:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Tipton X-Patchwork-Id: 11754589 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 63B9D109A for ; Thu, 3 Sep 2020 19:22:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4A3BD2098B for ; Thu, 3 Sep 2020 19:22:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="eA8TBcQ8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729306AbgICTWc (ORCPT ); Thu, 3 Sep 2020 15:22:32 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:29564 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729308AbgICTW3 (ORCPT ); Thu, 3 Sep 2020 15:22:29 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1599160948; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=WnWVXLK9C/o1i/i6p20aFvv5wxqbwW5+D5tFtlrLwVg=; b=eA8TBcQ8tG7pKXBHgdNOzi5WtByi4H4gCIG0aPvt10Ir6+WOBWiVPXwfHVTNGBV9WNHhtZ8L OMy5je5lAV8vo49fKxJ91fcj1wjGxmN0cMbBGUpJUHjfd01zgFYbdTXZpu4YxviMkseyUzA0 uSybKMYp0FgULCc87AHssTeGg54= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n04.prod.us-east-1.postgun.com with SMTP id 5f514265ba408b30ceb3b7a5 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 03 Sep 2020 19:22:13 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id A9B40C43387; Thu, 3 Sep 2020 19:22:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=ham autolearn_force=no version=3.4.0 Received: from mdtipton-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: mdtipton) by smtp.codeaurora.org (Postfix) with ESMTPSA id DA297C433A0; Thu, 3 Sep 2020 19:22:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org DA297C433A0 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=mdtipton@codeaurora.org From: Mike Tipton To: georgi.djakov@linaro.org Cc: bjorn.andersson@linaro.org, agross@kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mike Tipton Subject: [PATCH v4 4/6] interconnect: qcom: Support bcm-voter-specific TCS wait behavior Date: Thu, 3 Sep 2020 12:21:47 -0700 Message-Id: <20200903192149.30385-5-mdtipton@codeaurora.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20200903192149.30385-1-mdtipton@codeaurora.org> References: <20200903192149.30385-1-mdtipton@codeaurora.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Currently, all bcm-voters set tcs_cmd::wait=true for the last VCD command in each TCS (AMC, WAKE, and SLEEP). However, some bcm-voters don't need the completion and instead need to optimize for latency. For instance, disabling wait-for-completion in the WAKE set can decrease resume latency and allow for certain operations to occur in parallel with the WAKE TCS triggering. This is only safe in very specific situations. Keep the default behavior of always waiting, but allow it to be overridden in devicetree. Signed-off-by: Mike Tipton --- drivers/interconnect/qcom/bcm-voter.c | 32 ++++++++++++++++++--------- 1 file changed, 21 insertions(+), 11 deletions(-) diff --git a/drivers/interconnect/qcom/bcm-voter.c b/drivers/interconnect/qcom/bcm-voter.c index 609db9c95fd7..f7db2b900599 100644 --- a/drivers/interconnect/qcom/bcm-voter.c +++ b/drivers/interconnect/qcom/bcm-voter.c @@ -27,6 +27,7 @@ static DEFINE_MUTEX(bcm_voter_lock); * @commit_list: list containing bcms to be committed to hardware * @ws_list: list containing bcms that have different wake/sleep votes * @voter_node: list of bcm voters + * @tcs_wait: mask for which buckets require TCS completion */ struct bcm_voter { struct device *dev; @@ -35,6 +36,7 @@ struct bcm_voter { struct list_head commit_list; struct list_head ws_list; struct list_head voter_node; + u32 tcs_wait; }; static int cmp_vcd(void *priv, struct list_head *a, struct list_head *b) @@ -100,7 +102,7 @@ static void bcm_aggregate(struct qcom_icc_bcm *bcm) } static inline void tcs_cmd_gen(struct tcs_cmd *cmd, u64 vote_x, u64 vote_y, - u32 addr, bool commit) + u32 addr, bool commit, bool wait) { bool valid = true; @@ -125,15 +127,16 @@ static inline void tcs_cmd_gen(struct tcs_cmd *cmd, u64 vote_x, u64 vote_y, * Set the wait for completion flag on command that need to be completed * before the next command. */ - cmd->wait = commit; + cmd->wait = wait; } -static void tcs_list_gen(struct list_head *bcm_list, int bucket, - struct tcs_cmd tcs_list[MAX_BCMS], +static void tcs_list_gen(struct bcm_voter *voter, int bucket, + struct tcs_cmd tcs_list[MAX_VCD], int n[MAX_VCD + 1]) { + struct list_head *bcm_list = &voter->commit_list; struct qcom_icc_bcm *bcm; - bool commit; + bool commit, wait; size_t idx = 0, batch = 0, cur_vcd_size = 0; memset(n, 0, sizeof(int) * (MAX_VCD + 1)); @@ -146,8 +149,11 @@ static void tcs_list_gen(struct list_head *bcm_list, int bucket, commit = true; cur_vcd_size = 0; } + + wait = commit && (voter->tcs_wait & BIT(bucket)); + tcs_cmd_gen(&tcs_list[idx], bcm->vote_x[bucket], - bcm->vote_y[bucket], bcm->addr, commit); + bcm->vote_y[bucket], bcm->addr, commit, wait); idx++; n[batch]++; /* @@ -272,8 +278,7 @@ int qcom_icc_bcm_voter_commit(struct bcm_voter *voter) * Construct the command list based on a pre ordered list of BCMs * based on VCD. */ - tcs_list_gen(&voter->commit_list, QCOM_ICC_BUCKET_AMC, cmds, commit_idx); - + tcs_list_gen(voter, QCOM_ICC_BUCKET_AMC, cmds, commit_idx); if (!commit_idx[0]) goto out; @@ -309,7 +314,7 @@ int qcom_icc_bcm_voter_commit(struct bcm_voter *voter) list_sort(NULL, &voter->commit_list, cmp_vcd); - tcs_list_gen(&voter->commit_list, QCOM_ICC_BUCKET_WAKE, cmds, commit_idx); + tcs_list_gen(voter, QCOM_ICC_BUCKET_WAKE, cmds, commit_idx); ret = rpmh_write_batch(voter->dev, RPMH_WAKE_ONLY_STATE, cmds, commit_idx); if (ret) { @@ -317,7 +322,7 @@ int qcom_icc_bcm_voter_commit(struct bcm_voter *voter) goto out; } - tcs_list_gen(&voter->commit_list, QCOM_ICC_BUCKET_SLEEP, cmds, commit_idx); + tcs_list_gen(voter, QCOM_ICC_BUCKET_SLEEP, cmds, commit_idx); ret = rpmh_write_batch(voter->dev, RPMH_SLEEP_STATE, cmds, commit_idx); if (ret) { @@ -336,6 +341,7 @@ EXPORT_SYMBOL_GPL(qcom_icc_bcm_voter_commit); static int qcom_icc_bcm_voter_probe(struct platform_device *pdev) { + struct device_node *np = pdev->dev.of_node; struct bcm_voter *voter; voter = devm_kzalloc(&pdev->dev, sizeof(*voter), GFP_KERNEL); @@ -343,7 +349,11 @@ static int qcom_icc_bcm_voter_probe(struct platform_device *pdev) return -ENOMEM; voter->dev = &pdev->dev; - voter->np = pdev->dev.of_node; + voter->np = np; + + if (of_property_read_u32(np, "qcom,tcs-wait", &voter->tcs_wait)) + voter->tcs_wait = QCOM_ICC_TAG_ALWAYS; + mutex_init(&voter->lock); INIT_LIST_HEAD(&voter->commit_list); INIT_LIST_HEAD(&voter->ws_list); From patchwork Thu Sep 3 19:21:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Tipton X-Patchwork-Id: 11754593 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 602D9109A for ; Thu, 3 Sep 2020 19:22:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 400E820FC3 for ; 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Thu, 03 Sep 2020 19:22:13 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 3B9ECC433A1; Thu, 3 Sep 2020 19:22:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mdtipton-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: mdtipton) by smtp.codeaurora.org (Postfix) with ESMTPSA id 6CE2BC433CB; Thu, 3 Sep 2020 19:22:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 6CE2BC433CB Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=mdtipton@codeaurora.org From: Mike Tipton To: georgi.djakov@linaro.org Cc: bjorn.andersson@linaro.org, agross@kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mike Tipton Subject: [PATCH v4 5/6] interconnect: qcom: Only wait for completion in AMC/WAKE by default Date: Thu, 3 Sep 2020 12:21:48 -0700 Message-Id: <20200903192149.30385-6-mdtipton@codeaurora.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20200903192149.30385-1-mdtipton@codeaurora.org> References: <20200903192149.30385-1-mdtipton@codeaurora.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Change the default TCS wait behavior to only wait for completion in AMC and WAKE. Waiting isn't necessary in the SLEEP TCS, since votes are only being removed in this case. Resources can be safely disabled asynchronously in parallel with the rest of the power collapse sequence. This reduces the sleep entry latency. Signed-off-by: Mike Tipton --- drivers/interconnect/qcom/bcm-voter.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/interconnect/qcom/bcm-voter.c b/drivers/interconnect/qcom/bcm-voter.c index f7db2b900599..d58b08f1f495 100644 --- a/drivers/interconnect/qcom/bcm-voter.c +++ b/drivers/interconnect/qcom/bcm-voter.c @@ -352,7 +352,7 @@ static int qcom_icc_bcm_voter_probe(struct platform_device *pdev) voter->np = np; if (of_property_read_u32(np, "qcom,tcs-wait", &voter->tcs_wait)) - voter->tcs_wait = QCOM_ICC_TAG_ALWAYS; + voter->tcs_wait = QCOM_ICC_TAG_ACTIVE_ONLY; mutex_init(&voter->lock); INIT_LIST_HEAD(&voter->commit_list); From patchwork Thu Sep 3 19:21:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Tipton X-Patchwork-Id: 11754597 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D32B114E5 for ; Thu, 3 Sep 2020 19:22:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B975D20BED for ; Thu, 3 Sep 2020 19:22:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="CGjd2bhu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729329AbgICTWi (ORCPT ); Thu, 3 Sep 2020 15:22:38 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:57647 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729323AbgICTWh (ORCPT ); Thu, 3 Sep 2020 15:22:37 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1599160957; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=z084RdcIfNwQPxcUGwi7reNJTWovUpFU02zKdvjqZ24=; b=CGjd2bhu3s5jpjvQ9p6NEKGPP0VUrqwweMYwMZF/CgzvBkM89mkmOE201QkhHWgoKW+84EuT eIp7ld1Ngip4hye/pDGeYJhSPiHUl4HQuUJZf68LUJJrgXwUUYbhKPWtljrTCkYMSi5sFKw/ MU11cYH8HSsumGeoF79han8HK0I= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n07.prod.us-east-1.postgun.com with SMTP id 5f514267238e1efa3788613a (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 03 Sep 2020 19:22:15 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id AD360C43395; Thu, 3 Sep 2020 19:22:14 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mdtipton-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: mdtipton) by smtp.codeaurora.org (Postfix) with ESMTPSA id EC5BCC43391; Thu, 3 Sep 2020 19:22:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org EC5BCC43391 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=mdtipton@codeaurora.org From: Mike Tipton To: georgi.djakov@linaro.org Cc: bjorn.andersson@linaro.org, agross@kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mike Tipton Subject: [PATCH v4 6/6] interconnect: qcom: Add support for per-BCM scaling factors Date: Thu, 3 Sep 2020 12:21:49 -0700 Message-Id: <20200903192149.30385-7-mdtipton@codeaurora.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20200903192149.30385-1-mdtipton@codeaurora.org> References: <20200903192149.30385-1-mdtipton@codeaurora.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Currently, bcm-voter always assumes requests are made in KBps and that BCM HW always wants them in Bps, so it always scales the requests by 1000. However, certain use cases and BCMs may use different units. Thus, add support for BCM-specific scaling factors. Signed-off-by: Mike Tipton --- drivers/interconnect/qcom/bcm-voter.c | 4 ++-- drivers/interconnect/qcom/icc-rpmh.c | 3 +++ drivers/interconnect/qcom/icc-rpmh.h | 2 ++ 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/interconnect/qcom/bcm-voter.c b/drivers/interconnect/qcom/bcm-voter.c index d58b08f1f495..887d13721e52 100644 --- a/drivers/interconnect/qcom/bcm-voter.c +++ b/drivers/interconnect/qcom/bcm-voter.c @@ -85,10 +85,10 @@ static void bcm_aggregate(struct qcom_icc_bcm *bcm) agg_peak[bucket] = max(agg_peak[bucket], temp); } - temp = agg_avg[bucket] * 1000ULL; + temp = agg_avg[bucket] * bcm->vote_scale; bcm->vote_x[bucket] = bcm_div(temp, bcm->aux_data.unit); - temp = agg_peak[bucket] * 1000ULL; + temp = agg_peak[bucket] * bcm->vote_scale; bcm->vote_y[bucket] = bcm_div(temp, bcm->aux_data.unit); } diff --git a/drivers/interconnect/qcom/icc-rpmh.c b/drivers/interconnect/qcom/icc-rpmh.c index 3ac5182c9ab2..008846c17bec 100644 --- a/drivers/interconnect/qcom/icc-rpmh.c +++ b/drivers/interconnect/qcom/icc-rpmh.c @@ -136,6 +136,9 @@ int qcom_icc_bcm_init(struct qcom_icc_bcm *bcm, struct device *dev) INIT_LIST_HEAD(&bcm->list); INIT_LIST_HEAD(&bcm->ws_list); + if (!bcm->vote_scale) + bcm->vote_scale = 1000; + /* Link Qnodes to their respective BCMs */ for (i = 0; i < bcm->num_nodes; i++) { qn = bcm->nodes[i]; diff --git a/drivers/interconnect/qcom/icc-rpmh.h b/drivers/interconnect/qcom/icc-rpmh.h index cb736b745e1a..10b1890345b1 100644 --- a/drivers/interconnect/qcom/icc-rpmh.h +++ b/drivers/interconnect/qcom/icc-rpmh.h @@ -80,6 +80,7 @@ struct qcom_icc_node { * @addr: address offsets used when voting to RPMH * @vote_x: aggregated threshold values, represents sum_bw when @type is bw bcm * @vote_y: aggregated threshold values, represents peak_bw when @type is bw bcm + * @vote_scale: scaling factor for vote_x and vote_y * @dirty: flag used to indicate whether the bcm needs to be committed * @keepalive: flag used to indicate whether a keepalive is required * @aux_data: auxiliary data used when calculating threshold values and @@ -95,6 +96,7 @@ struct qcom_icc_bcm { u32 addr; u64 vote_x[QCOM_ICC_NUM_BUCKETS]; u64 vote_y[QCOM_ICC_NUM_BUCKETS]; + u64 vote_scale; bool dirty; bool keepalive; struct bcm_db aux_data;