From patchwork Tue Dec 7 02:47:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Martinez X-Patchwork-Id: 12660895 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 6CFFFC4332F for ; Tue, 7 Dec 2021 02:48:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232425AbhLGCv6 (ORCPT ); Mon, 6 Dec 2021 21:51:58 -0500 Received: from mga07.intel.com ([134.134.136.100]:27266 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229588AbhLGCvo (ORCPT ); Mon, 6 Dec 2021 21:51:44 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10190"; a="300860588" X-IronPort-AV: E=Sophos;i="5.87,293,1631602800"; d="scan'208";a="300860588" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Dec 2021 18:47:51 -0800 X-IronPort-AV: E=Sophos;i="5.87,293,1631602800"; d="scan'208";a="748524179" Received: from rmarti10-desk.jf.intel.com ([134.134.150.146]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Dec 2021 18:47:50 -0800 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, mika.westerberg@linux.intel.com, moises.veleta@intel.com, pierre-louis.bossart@intel.com, muralidharan.sethuraman@intel.com, Soumya.Prakash.Mishra@intel.com, sreehari.kancharla@intel.com, suresh.nagaraj@intel.com, Ricardo Martinez Subject: [PATCH net-next v3 10/12] net: wwan: t7xx: Runtime PM Date: Mon, 6 Dec 2021 19:47:09 -0700 Message-Id: <20211207024711.2765-11-ricardo.martinez@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211207024711.2765-1-ricardo.martinez@linux.intel.com> References: <20211207024711.2765-1-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 --- drivers/net/wwan/t7xx/t7xx_hif_cldma.c | 13 +++++++++++++ drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c | 16 ++++++++++++++++ drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c | 15 +++++++++++++++ drivers/net/wwan/t7xx/t7xx_pci.c | 21 +++++++++++++++++++++ 4 files changed, 65 insertions(+) diff --git a/drivers/net/wwan/t7xx/t7xx_hif_cldma.c b/drivers/net/wwan/t7xx/t7xx_hif_cldma.c index 8f35e6e43504..cdeb79bb006e 100644 --- a/drivers/net/wwan/t7xx/t7xx_hif_cldma.c +++ b/drivers/net/wwan/t7xx/t7xx_hif_cldma.c @@ -34,6 +34,7 @@ #include #include #include +#include #include #include #include @@ -274,6 +275,8 @@ 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) @@ -390,6 +393,8 @@ static void t7xx_cldma_tx_done(struct work_struct *work) } 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, @@ -599,6 +604,7 @@ 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, @@ -623,6 +629,7 @@ 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); @@ -986,6 +993,10 @@ 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); @@ -1033,6 +1044,8 @@ 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 ce73081470f6..710e4727ea84 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 @@ -912,6 +913,7 @@ 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 */ @@ -923,8 +925,14 @@ 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); } @@ -1154,11 +1162,19 @@ 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 fc6e04edc5ea..f8e7a10273a4 100644 --- a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c +++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include #include @@ -170,6 +171,10 @@ static void t7xx_dpmaif_tx_done(struct work_struct *work) struct dpmaif_ctrl *dpmaif_ctrl = txq->dpmaif_ctrl; int ret; + ret = pm_runtime_resume_and_get(dpmaif_ctrl->dev); + if (ret < 0 && ret != -EACCES) + return; + ret = t7xx_dpmaif_tx_release(dpmaif_ctrl, txq->index, txq->drb_size_cnt); if (ret == -EAGAIN || (t7xx_dpmaif_ul_clr_done(&dpmaif_ctrl->hif_hw_info, txq->index) && @@ -182,6 +187,9 @@ static void t7xx_dpmaif_tx_done(struct work_struct *work) t7xx_dpmaif_clr_ip_busy_sts(&dpmaif_ctrl->hif_hw_info); t7xx_dpmaif_unmask_ulq_intr(dpmaif_ctrl, 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 char q_num, @@ -457,6 +465,7 @@ 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) || @@ -470,7 +479,13 @@ 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 546f22aa555f..a1a0824c1e11 100644 --- a/drivers/net/wwan/t7xx/t7xx_pci.c +++ b/drivers/net/wwan/t7xx/t7xx_pci.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include "t7xx_mhccif.h" @@ -45,6 +46,7 @@ #define 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 @@ -87,6 +89,8 @@ static int t7xx_pci_pm_init(struct t7xx_pci_dev *t7xx_dev) atomic_set(&t7xx_dev->md_pm_state, MTK_PM_INIT); iowrite32(L1_DISABLE_BIT(0), IREG_BASE(t7xx_dev) + DIS_ASPM_LOWPWR_SET_0); + pm_runtime_set_autosuspend_delay(&pdev->dev, PM_AUTOSUSPEND_MS); + pm_runtime_use_autosuspend(&pdev->dev); return t7xx_wait_pm_config(t7xx_dev); } @@ -101,6 +105,8 @@ void t7xx_pci_pm_init_late(struct t7xx_pci_dev *t7xx_dev) D2H_INT_RESUME_ACK_AP); iowrite32(L1_DISABLE_BIT(0), IREG_BASE(t7xx_dev) + DIS_ASPM_LOWPWR_CLR_0); 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) @@ -110,6 +116,8 @@ static int t7xx_pci_pm_reinit(struct t7xx_pci_dev *t7xx_dev) */ atomic_set(&t7xx_dev->md_pm_state, MTK_PM_INIT); + pm_runtime_get_noresume(&t7xx_dev->pdev->dev); + iowrite32(L1_DISABLE_BIT(0), IREG_BASE(t7xx_dev) + DIS_ASPM_LOWPWR_SET_0); return t7xx_wait_pm_config(t7xx_dev); } @@ -404,6 +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(L1_DISABLE_BIT(0), IREG_BASE(t7xx_dev) + DIS_ASPM_LOWPWR_CLR_0); + pm_runtime_mark_last_busy(&pdev->dev); atomic_set(&t7xx_dev->md_pm_state, MTK_PM_RESUMED); return ret; @@ -445,6 +454,16 @@ 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, @@ -454,6 +473,8 @@ 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)