From patchwork Thu Apr 7 22:36:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Ricardo Martinez X-Patchwork-Id: 12805846 X-Patchwork-Delegate: kuba@kernel.org 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 C186DC433FE for ; Thu, 7 Apr 2022 22:37:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232158AbiDGWja (ORCPT ); Thu, 7 Apr 2022 18:39:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41388 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232138AbiDGWjS (ORCPT ); Thu, 7 Apr 2022 18:39:18 -0400 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ED5B4129E8E; Thu, 7 Apr 2022 15:37:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1649371034; x=1680907034; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=5J9owCtcRz1q2ZAwXCNnDOxJ5NfSfuM8HHAZCQ222qo=; b=nDBD1K78Qtuws3dl4Y0LwdbP7cjXOzpKgIBfJs/NW19tSbTvBpivEICs Ys1Ph9o0lLKhr77/yrXXAs2Q9lmsrWn8h6OfgFk1+GpcTEhZiUu6ICHn1 zuDCGuteuNbPIThSNpAmOr5nMdEX5wSDSoSqjUT6MlM5/whe3jM4VEcjD 9Dcc02BengPYYK4C3gz/An31EIHExlj5srfXIjF5yNDzxJn7ThpJ0mKSX fZtM3U7txRtLjr4uyhJWN++GTaeTOSu1A1tsaMlA6NAPyoN2/P7ILG50w kGPcgiii00+QBgVWGZEm3Ik4g43qubMS0dS26gtEZARvYhcvXS1Q4lJfB Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10310"; a="243589605" X-IronPort-AV: E=Sophos;i="5.90,242,1643702400"; d="scan'208";a="243589605" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Apr 2022 15:37:12 -0700 X-IronPort-AV: E=Sophos;i="5.90,242,1643702400"; d="scan'208";a="659242902" Received: from rmarti10-desk.jf.intel.com ([134.134.150.146]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Apr 2022 15:37:12 -0700 From: Ricardo Martinez To: netdev@vger.kernel.org, linux-wireless@vger.kernel.org Cc: kuba@kernel.org, davem@davemloft.net, johannes@sipsolutions.net, ryazanov.s.a@gmail.com, loic.poulain@linaro.org, m.chetan.kumar@intel.com, chandrashekar.devegowda@intel.com, linuxwwan@intel.com, chiranjeevi.rapolu@linux.intel.com, haijun.liu@mediatek.com, amir.hanania@intel.com, andriy.shevchenko@linux.intel.com, dinesh.sharma@intel.com, eliot.lee@intel.com, ilpo.johannes.jarvinen@intel.com, moises.veleta@intel.com, pierre-louis.bossart@intel.com, muralidharan.sethuraman@intel.com, Soumya.Prakash.Mishra@intel.com, sreehari.kancharla@intel.com, madhusmita.sahu@intel.com, Ricardo Martinez Subject: [PATCH net-next v6 11/13] net: wwan: t7xx: Runtime PM Date: Thu, 7 Apr 2022 15:36:27 -0700 Message-Id: <20220407223629.21487-12-ricardo.martinez@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220407223629.21487-1-ricardo.martinez@linux.intel.com> References: <20220407223629.21487-1-ricardo.martinez@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Haijun Liu Enables runtime power management callbacks including runtime_suspend and runtime_resume. Autosuspend is used to prevent overhead by frequent wake-ups. Signed-off-by: Haijun Liu Signed-off-by: Chandrashekar Devegowda Co-developed-by: Eliot Lee Signed-off-by: Eliot Lee Signed-off-by: Ricardo Martinez Reviewed-by: Ilpo Järvinen --- drivers/net/wwan/t7xx/t7xx_hif_cldma.c | 14 ++++++++++++++ drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c | 17 +++++++++++++++++ drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c | 15 +++++++++++++++ drivers/net/wwan/t7xx/t7xx_pci.c | 22 ++++++++++++++++++++++ 4 files changed, 68 insertions(+) diff --git a/drivers/net/wwan/t7xx/t7xx_hif_cldma.c b/drivers/net/wwan/t7xx/t7xx_hif_cldma.c index b71d76d4db51..3f3bb82a0543 100644 --- a/drivers/net/wwan/t7xx/t7xx_hif_cldma.c +++ b/drivers/net/wwan/t7xx/t7xx_hif_cldma.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include #include @@ -266,6 +267,8 @@ static void t7xx_cldma_rx_done(struct work_struct *work) t7xx_cldma_clear_ip_busy(&md_ctrl->hw_info); t7xx_cldma_hw_irq_en_txrx(&md_ctrl->hw_info, queue->index, MTK_RX); t7xx_cldma_hw_irq_en_eq(&md_ctrl->hw_info, queue->index, MTK_RX); + pm_runtime_mark_last_busy(md_ctrl->dev); + pm_runtime_put_autosuspend(md_ctrl->dev); } static int t7xx_cldma_gpd_tx_collect(struct cldma_queue *queue) @@ -377,6 +380,9 @@ static void t7xx_cldma_tx_done(struct work_struct *work) t7xx_cldma_hw_irq_en_txrx(hw_info, queue->index, MTK_TX); } spin_unlock_irqrestore(&md_ctrl->cldma_lock, flags); + + pm_runtime_mark_last_busy(md_ctrl->dev); + pm_runtime_put_autosuspend(md_ctrl->dev); } static void t7xx_cldma_ring_free(struct cldma_ctrl *md_ctrl, @@ -585,6 +591,7 @@ static void t7xx_cldma_irq_work_cb(struct cldma_ctrl *md_ctrl) if (l2_tx_int & (TXRX_STATUS_BITMASK | EMPTY_STATUS_BITMASK)) { for_each_set_bit(i, (unsigned long *)&l2_tx_int, L2_INT_BIT_COUNT) { if (i < CLDMA_TXQ_NUM) { + pm_runtime_get(md_ctrl->dev); t7xx_cldma_hw_irq_dis_eq(hw_info, i, MTK_TX); t7xx_cldma_hw_irq_dis_txrx(hw_info, i, MTK_TX); queue_work(md_ctrl->txq[i].worker, @@ -609,6 +616,7 @@ static void t7xx_cldma_irq_work_cb(struct cldma_ctrl *md_ctrl) if (l2_rx_int & (TXRX_STATUS_BITMASK | EMPTY_STATUS_BITMASK)) { l2_rx_int |= l2_rx_int >> CLDMA_RXQ_NUM; for_each_set_bit(i, (unsigned long *)&l2_rx_int, CLDMA_RXQ_NUM) { + pm_runtime_get(md_ctrl->dev); t7xx_cldma_hw_irq_dis_eq(hw_info, i, MTK_RX); t7xx_cldma_hw_irq_dis_txrx(hw_info, i, MTK_RX); queue_work(md_ctrl->rxq[i].worker, &md_ctrl->rxq[i].cldma_work); @@ -939,6 +947,10 @@ int t7xx_cldma_send_skb(struct cldma_ctrl *md_ctrl, int qno, struct sk_buff *skb if (qno >= CLDMA_TXQ_NUM) return -EINVAL; + ret = pm_runtime_resume_and_get(md_ctrl->dev); + if (ret < 0 && ret != -EACCES) + return ret; + queue = &md_ctrl->txq[qno]; spin_lock_irqsave(&md_ctrl->cldma_lock, flags); @@ -982,6 +994,8 @@ int t7xx_cldma_send_skb(struct cldma_ctrl *md_ctrl, int qno, struct sk_buff *skb } while (!ret); allow_sleep: + pm_runtime_mark_last_busy(md_ctrl->dev); + pm_runtime_put_autosuspend(md_ctrl->dev); return ret; } diff --git a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c index 6aa10536dd9c..1b029cbc28ff 100644 --- a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c +++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include #include @@ -911,6 +912,7 @@ static void t7xx_dpmaif_rxq_work(struct work_struct *work) { struct dpmaif_rx_queue *rxq = container_of(work, struct dpmaif_rx_queue, dpmaif_rxq_work); struct dpmaif_ctrl *dpmaif_ctrl = rxq->dpmaif_ctrl; + int ret; atomic_set(&rxq->rx_processing, 1); /* Ensure rx_processing is changed to 1 before actually begin RX flow */ @@ -922,7 +924,14 @@ static void t7xx_dpmaif_rxq_work(struct work_struct *work) return; } + ret = pm_runtime_resume_and_get(dpmaif_ctrl->dev); + if (ret < 0 && ret != -EACCES) + return; + t7xx_dpmaif_do_rx(dpmaif_ctrl, rxq); + + pm_runtime_mark_last_busy(dpmaif_ctrl->dev); + pm_runtime_put_autosuspend(dpmaif_ctrl->dev); atomic_set(&rxq->rx_processing, 0); } @@ -1124,11 +1133,19 @@ static void t7xx_dpmaif_bat_release_work(struct work_struct *work) { struct dpmaif_ctrl *dpmaif_ctrl = container_of(work, struct dpmaif_ctrl, bat_release_work); struct dpmaif_rx_queue *rxq; + int ret; + + ret = pm_runtime_resume_and_get(dpmaif_ctrl->dev); + if (ret < 0 && ret != -EACCES) + return; /* ALL RXQ use one BAT table, so choose DPF_RX_QNO_DFT */ rxq = &dpmaif_ctrl->rxq[DPF_RX_QNO_DFT]; t7xx_dpmaif_bat_release_and_add(rxq); t7xx_dpmaif_frag_bat_release_and_add(rxq); + + pm_runtime_mark_last_busy(dpmaif_ctrl->dev); + pm_runtime_put_autosuspend(dpmaif_ctrl->dev); } int t7xx_dpmaif_bat_rel_wq_alloc(struct dpmaif_ctrl *dpmaif_ctrl) diff --git a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c index b6c43c538a10..026821a98c9d 100644 --- a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c +++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -161,6 +162,10 @@ static void t7xx_dpmaif_tx_done(struct work_struct *work) struct dpmaif_hw_info *hw_info; int ret; + ret = pm_runtime_resume_and_get(dpmaif_ctrl->dev); + if (ret < 0 && ret != -EACCES) + return; + hw_info = &dpmaif_ctrl->hw_info; ret = t7xx_dpmaif_tx_release(dpmaif_ctrl, txq->index, txq->drb_size_cnt); if (ret == -EAGAIN || @@ -174,6 +179,9 @@ static void t7xx_dpmaif_tx_done(struct work_struct *work) t7xx_dpmaif_clr_ip_busy_sts(hw_info); t7xx_dpmaif_unmask_ulq_intr(hw_info, txq->index); } + + pm_runtime_mark_last_busy(dpmaif_ctrl->dev); + pm_runtime_put_autosuspend(dpmaif_ctrl->dev); } static void t7xx_setup_msg_drb(struct dpmaif_ctrl *dpmaif_ctrl, unsigned int q_num, @@ -420,6 +428,7 @@ static void t7xx_do_tx_hw_push(struct dpmaif_ctrl *dpmaif_ctrl) static int t7xx_dpmaif_tx_hw_push_thread(void *arg) { struct dpmaif_ctrl *dpmaif_ctrl = arg; + int ret; while (!kthread_should_stop()) { if (t7xx_tx_lists_are_all_empty(dpmaif_ctrl) || @@ -434,7 +443,13 @@ static int t7xx_dpmaif_tx_hw_push_thread(void *arg) break; } + ret = pm_runtime_resume_and_get(dpmaif_ctrl->dev); + if (ret < 0 && ret != -EACCES) + return ret; + t7xx_do_tx_hw_push(dpmaif_ctrl); + pm_runtime_mark_last_busy(dpmaif_ctrl->dev); + pm_runtime_put_autosuspend(dpmaif_ctrl->dev); } return 0; diff --git a/drivers/net/wwan/t7xx/t7xx_pci.c b/drivers/net/wwan/t7xx/t7xx_pci.c index 564147664af0..400c11f7b31e 100644 --- a/drivers/net/wwan/t7xx/t7xx_pci.c +++ b/drivers/net/wwan/t7xx/t7xx_pci.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include "t7xx_mhccif.h" @@ -44,6 +45,7 @@ #define T7XX_PCI_EREG_BASE 2 #define PM_ACK_TIMEOUT_MS 1500 +#define PM_AUTOSUSPEND_MS 20000 #define PM_RESOURCE_POLL_TIMEOUT_US 10000 #define PM_RESOURCE_POLL_STEP_US 100 @@ -82,6 +84,8 @@ static int t7xx_pci_pm_init(struct t7xx_pci_dev *t7xx_dev) DPM_FLAG_NO_DIRECT_COMPLETE); iowrite32(T7XX_L1_BIT(0), IREG_BASE(t7xx_dev) + DISABLE_ASPM_LOWPWR); + pm_runtime_set_autosuspend_delay(&pdev->dev, PM_AUTOSUSPEND_MS); + pm_runtime_use_autosuspend(&pdev->dev); return t7xx_wait_pm_config(t7xx_dev); } @@ -96,6 +100,8 @@ void t7xx_pci_pm_init_late(struct t7xx_pci_dev *t7xx_dev) D2H_INT_RESUME_ACK_AP); iowrite32(T7XX_L1_BIT(0), IREG_BASE(t7xx_dev) + ENABLE_ASPM_LOWPWR); atomic_set(&t7xx_dev->md_pm_state, MTK_PM_RESUMED); + + pm_runtime_put_noidle(&t7xx_dev->pdev->dev); } static int t7xx_pci_pm_reinit(struct t7xx_pci_dev *t7xx_dev) @@ -104,6 +110,9 @@ static int t7xx_pci_pm_reinit(struct t7xx_pci_dev *t7xx_dev) * so just roll back PM setting to the init setting. */ atomic_set(&t7xx_dev->md_pm_state, MTK_PM_INIT); + + pm_runtime_get_noresume(&t7xx_dev->pdev->dev); + iowrite32(T7XX_L1_BIT(0), IREG_BASE(t7xx_dev) + DISABLE_ASPM_LOWPWR); return t7xx_wait_pm_config(t7xx_dev); } @@ -403,6 +412,7 @@ static int __t7xx_pci_pm_resume(struct pci_dev *pdev, bool state_check) t7xx_dev->rgu_pci_irq_en = true; t7xx_pcie_mac_set_int(t7xx_dev, SAP_RGU_INT); iowrite32(T7XX_L1_BIT(0), IREG_BASE(t7xx_dev) + ENABLE_ASPM_LOWPWR); + pm_runtime_mark_last_busy(&pdev->dev); atomic_set(&t7xx_dev->md_pm_state, MTK_PM_RESUMED); return ret; @@ -439,6 +449,16 @@ static int t7xx_pci_pm_thaw(struct device *dev) return __t7xx_pci_pm_resume(to_pci_dev(dev), false); } +static int t7xx_pci_pm_runtime_suspend(struct device *dev) +{ + return __t7xx_pci_pm_suspend(to_pci_dev(dev)); +} + +static int t7xx_pci_pm_runtime_resume(struct device *dev) +{ + return __t7xx_pci_pm_resume(to_pci_dev(dev), true); +} + static const struct dev_pm_ops t7xx_pci_pm_ops = { .suspend = t7xx_pci_pm_suspend, .resume = t7xx_pci_pm_resume, @@ -448,6 +468,8 @@ static const struct dev_pm_ops t7xx_pci_pm_ops = { .poweroff = t7xx_pci_pm_suspend, .restore = t7xx_pci_pm_resume, .restore_noirq = t7xx_pci_pm_resume_noirq, + .runtime_suspend = t7xx_pci_pm_runtime_suspend, + .runtime_resume = t7xx_pci_pm_runtime_resume }; static int t7xx_request_irq(struct pci_dev *pdev)