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Fri, 28 Apr 2023 14:01:22 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT005.mail.protection.outlook.com (10.13.176.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6340.25 via Frontend Transport; Fri, 28 Apr 2023 14:01:21 +0000 Received: from jatayu.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Fri, 28 Apr 2023 09:01:19 -0500 From: Basavaraj Natikar To: , , , CC: Basavaraj Natikar Subject: [PATCH v4 1/2] USB: Extend pci resume function to handle PM events Date: Fri, 28 Apr 2023 19:30:55 +0530 Message-ID: <20230428140056.1318981-2-Basavaraj.Natikar@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230428140056.1318981-1-Basavaraj.Natikar@amd.com> References: <20230428140056.1318981-1-Basavaraj.Natikar@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT005:EE_|PH8PR12MB7135:EE_ X-MS-Office365-Filtering-Correlation-Id: e36e2f86-028b-47e5-142e-08db47f10c1a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Apr 2023 14:01:21.8470 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e36e2f86-028b-47e5-142e-08db47f10c1a X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT005.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB7135 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Currently, the pci_resume method has only a flag indicating whether the system is resuming from hibernation. In order to handle all PM events like AUTO_RESUME (runtime resume from device in D3), RESUME (system resume from s2idle, S3 or S4 states) etc change the pci_resume method to handle all PM events. Signed-off-by: Basavaraj Natikar Acked-by: Alan Stern Acked-by: Mathias Nyman --- drivers/usb/core/hcd-pci.c | 24 +++++++++++++----------- drivers/usb/host/ehci-pci.c | 3 ++- drivers/usb/host/ohci-pci.c | 8 +++++++- drivers/usb/host/uhci-pci.c | 7 ++++--- drivers/usb/host/xhci-histb.c | 2 +- drivers/usb/host/xhci-pci.c | 4 ++-- drivers/usb/host/xhci-plat.c | 4 ++-- drivers/usb/host/xhci-tegra.c | 2 +- drivers/usb/host/xhci.c | 3 ++- drivers/usb/host/xhci.h | 2 +- include/linux/usb/hcd.h | 2 +- 11 files changed, 36 insertions(+), 25 deletions(-) diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c index ab2f3737764e..990280688b25 100644 --- a/drivers/usb/core/hcd-pci.c +++ b/drivers/usb/core/hcd-pci.c @@ -415,12 +415,15 @@ static int check_root_hub_suspended(struct device *dev) return 0; } -static int suspend_common(struct device *dev, bool do_wakeup) +static int suspend_common(struct device *dev, pm_message_t msg) { struct pci_dev *pci_dev = to_pci_dev(dev); struct usb_hcd *hcd = pci_get_drvdata(pci_dev); + bool do_wakeup; int retval; + do_wakeup = PMSG_IS_AUTO(msg) ? true : device_may_wakeup(dev); + /* Root hub suspend should have stopped all downstream traffic, * and all bus master traffic. And done so for both the interface * and the stub usb_device (which we check here). But maybe it @@ -447,7 +450,7 @@ static int suspend_common(struct device *dev, bool do_wakeup) (retval == 0 && do_wakeup && hcd->shared_hcd && HCD_WAKEUP_PENDING(hcd->shared_hcd))) { if (hcd->driver->pci_resume) - hcd->driver->pci_resume(hcd, false); + hcd->driver->pci_resume(hcd, msg); retval = -EBUSY; } if (retval) @@ -470,7 +473,7 @@ static int suspend_common(struct device *dev, bool do_wakeup) return retval; } -static int resume_common(struct device *dev, int event) +static int resume_common(struct device *dev, pm_message_t msg) { struct pci_dev *pci_dev = to_pci_dev(dev); struct usb_hcd *hcd = pci_get_drvdata(pci_dev); @@ -498,12 +501,11 @@ static int resume_common(struct device *dev, int event) * No locking is needed because PCI controller drivers do not * get unbound during system resume. */ - if (pci_dev->class == CL_EHCI && event != PM_EVENT_AUTO_RESUME) + if (pci_dev->class == CL_EHCI && msg.event != PM_EVENT_AUTO_RESUME) for_each_companion(pci_dev, hcd, ehci_wait_for_companions); - retval = hcd->driver->pci_resume(hcd, - event == PM_EVENT_RESTORE); + retval = hcd->driver->pci_resume(hcd, msg); if (retval) { dev_err(dev, "PCI post-resume error %d!\n", retval); usb_hc_died(hcd); @@ -516,7 +518,7 @@ static int resume_common(struct device *dev, int event) static int hcd_pci_suspend(struct device *dev) { - return suspend_common(dev, device_may_wakeup(dev)); + return suspend_common(dev, PMSG_SUSPEND); } static int hcd_pci_suspend_noirq(struct device *dev) @@ -577,12 +579,12 @@ static int hcd_pci_resume_noirq(struct device *dev) static int hcd_pci_resume(struct device *dev) { - return resume_common(dev, PM_EVENT_RESUME); + return resume_common(dev, PMSG_RESUME); } static int hcd_pci_restore(struct device *dev) { - return resume_common(dev, PM_EVENT_RESTORE); + return resume_common(dev, PMSG_RESTORE); } #else @@ -600,7 +602,7 @@ static int hcd_pci_runtime_suspend(struct device *dev) { int retval; - retval = suspend_common(dev, true); + retval = suspend_common(dev, PMSG_AUTO_SUSPEND); if (retval == 0) powermac_set_asic(to_pci_dev(dev), 0); dev_dbg(dev, "hcd_pci_runtime_suspend: %d\n", retval); @@ -612,7 +614,7 @@ static int hcd_pci_runtime_resume(struct device *dev) int retval; powermac_set_asic(to_pci_dev(dev), 1); - retval = resume_common(dev, PM_EVENT_AUTO_RESUME); + retval = resume_common(dev, PMSG_AUTO_RESUME); dev_dbg(dev, "hcd_pci_runtime_resume: %d\n", retval); return retval; } diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index 4b148fe5e43b..889dc4426271 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -354,10 +354,11 @@ static int ehci_pci_setup(struct usb_hcd *hcd) * Also they depend on separate root hub suspend/resume. */ -static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated) +static int ehci_pci_resume(struct usb_hcd *hcd, pm_message_t msg) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); struct pci_dev *pdev = to_pci_dev(hcd->self.controller); + bool hibernated = (msg.event == PM_EVENT_RESTORE); if (ehci_resume(hcd, hibernated) != 0) (void) ehci_pci_reinit(ehci, pdev); diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c index d7b4f40f9ff4..900ea0d368e0 100644 --- a/drivers/usb/host/ohci-pci.c +++ b/drivers/usb/host/ohci-pci.c @@ -301,6 +301,12 @@ static struct pci_driver ohci_pci_driver = { #endif }; +#ifdef CONFIG_PM +static int ohci_pci_resume(struct usb_hcd *hcd, pm_message_t msg) +{ + return ohci_resume(hcd, msg.event == PM_EVENT_RESTORE); +} +#endif static int __init ohci_pci_init(void) { if (usb_disabled()) @@ -311,7 +317,7 @@ static int __init ohci_pci_init(void) #ifdef CONFIG_PM /* Entries for the PCI suspend/resume callbacks are special */ ohci_pci_hc_driver.pci_suspend = ohci_suspend; - ohci_pci_hc_driver.pci_resume = ohci_resume; + ohci_pci_hc_driver.pci_resume = ohci_pci_resume; #endif return pci_register_driver(&ohci_pci_driver); diff --git a/drivers/usb/host/uhci-pci.c b/drivers/usb/host/uhci-pci.c index 3592f757fe05..5df4a1832b09 100644 --- a/drivers/usb/host/uhci-pci.c +++ b/drivers/usb/host/uhci-pci.c @@ -167,7 +167,7 @@ static void uhci_shutdown(struct pci_dev *pdev) #ifdef CONFIG_PM -static int uhci_pci_resume(struct usb_hcd *hcd, bool hibernated); +static int uhci_pci_resume(struct usb_hcd *hcd, pm_message_t state); static int uhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) { @@ -202,14 +202,15 @@ static int uhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) /* Check for race with a wakeup request */ if (do_wakeup && HCD_WAKEUP_PENDING(hcd)) { - uhci_pci_resume(hcd, false); + uhci_pci_resume(hcd, PMSG_SUSPEND); rc = -EBUSY; } return rc; } -static int uhci_pci_resume(struct usb_hcd *hcd, bool hibernated) +static int uhci_pci_resume(struct usb_hcd *hcd, pm_message_t msg) { + bool hibernated = (msg.event == PM_EVENT_RESTORE); struct uhci_hcd *uhci = hcd_to_uhci(hcd); dev_dbg(uhci_dev(uhci), "%s\n", __func__); diff --git a/drivers/usb/host/xhci-histb.c b/drivers/usb/host/xhci-histb.c index 08369857686e..91ce97821de5 100644 --- a/drivers/usb/host/xhci-histb.c +++ b/drivers/usb/host/xhci-histb.c @@ -367,7 +367,7 @@ static int __maybe_unused xhci_histb_resume(struct device *dev) if (!device_may_wakeup(dev)) xhci_histb_host_enable(histb); - return xhci_resume(xhci, 0); + return xhci_resume(xhci, PMSG_RESUME); } static const struct dev_pm_ops xhci_histb_pm_ops = { diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 6db07ca419c3..a4ea46911d7b 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -628,7 +628,7 @@ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) return ret; } -static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated) +static int xhci_pci_resume(struct usb_hcd *hcd, pm_message_t msg) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct pci_dev *pdev = to_pci_dev(hcd->self.controller); @@ -663,7 +663,7 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated) if (xhci->quirks & XHCI_PME_STUCK_QUIRK) xhci_pme_quirk(hcd); - retval = xhci_resume(xhci, hibernated); + retval = xhci_resume(xhci, msg); return retval; } diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index b9f9625467d6..041f5d805bef 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -465,7 +465,7 @@ static int __maybe_unused xhci_plat_resume(struct device *dev) if (ret) return ret; - ret = xhci_resume(xhci, 0); + ret = xhci_resume(xhci, PMSG_RESUME); if (ret) return ret; @@ -494,7 +494,7 @@ static int __maybe_unused xhci_plat_runtime_resume(struct device *dev) struct usb_hcd *hcd = dev_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); - return xhci_resume(xhci, 0); + return xhci_resume(xhci, PMSG_AUTO_RESUME); } const struct dev_pm_ops xhci_plat_pm_ops = { diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c index a88c39e525c2..b73d11fafd3e 100644 --- a/drivers/usb/host/xhci-tegra.c +++ b/drivers/usb/host/xhci-tegra.c @@ -2275,7 +2275,7 @@ static int tegra_xusb_exit_elpg(struct tegra_xusb *tegra, bool runtime) if (wakeup) tegra_xhci_disable_phy_sleepwalk(tegra); - err = xhci_resume(xhci, 0); + err = xhci_resume(xhci, runtime ? PMSG_AUTO_RESUME : PMSG_RESUME); if (err < 0) { dev_err(tegra->dev, "failed to resume XHCI: %d\n", err); goto disable_phy; diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 6307bae9cddf..11a87b9cbb50 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1157,8 +1157,9 @@ EXPORT_SYMBOL_GPL(xhci_suspend); * This is called when the machine transition from S3/S4 mode. * */ -int xhci_resume(struct xhci_hcd *xhci, bool hibernated) +int xhci_resume(struct xhci_hcd *xhci, pm_message_t msg) { + bool hibernated = (msg.event == PM_EVENT_RESTORE); u32 command, temp = 0; struct usb_hcd *hcd = xhci_to_hcd(xhci); int retval = 0; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 786002bb35db..f61a63f9e7e6 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -2139,7 +2139,7 @@ int xhci_disable_slot(struct xhci_hcd *xhci, u32 slot_id); int xhci_ext_cap_init(struct xhci_hcd *xhci); int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup); -int xhci_resume(struct xhci_hcd *xhci, bool hibernated); +int xhci_resume(struct xhci_hcd *xhci, pm_message_t msg); irqreturn_t xhci_irq(struct usb_hcd *hcd); irqreturn_t xhci_msi_irq(int irq, void *hcd); diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index b51c07111729..4f559b4523df 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -267,7 +267,7 @@ struct hc_driver { int (*pci_suspend)(struct usb_hcd *hcd, bool do_wakeup); /* called after entering D0 (etc), before resuming the hub */ - int (*pci_resume)(struct usb_hcd *hcd, bool hibernated); + int (*pci_resume)(struct usb_hcd *hcd, pm_message_t state); /* called just before hibernate final D3 state, allows host to poweroff parts */ int (*pci_poweroff_late)(struct usb_hcd *hcd, bool do_wakeup);