From patchwork Sun Feb 7 20:48:24 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rafael Wysocki X-Patchwork-Id: 77641 Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o17KnSvc020360 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 7 Feb 2010 20:50:04 GMT Received: from localhost ([127.0.0.1] helo=sfs-ml-4.v29.ch3.sourceforge.com) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1NeE32-00055g-3j; Sun, 07 Feb 2010 20:48:04 +0000 Received: from sfi-mx-4.v28.ch3.sourceforge.com ([172.29.28.124] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1NeE30-00055V-7X for dri-devel@lists.sourceforge.net; Sun, 07 Feb 2010 20:48:02 +0000 X-ACL-Warn: Received: from ogre.sisk.pl ([217.79.144.158]) by sfi-mx-4.v28.ch3.sourceforge.com with esmtp (Exim 4.69) id 1NeE2y-0001xN-99 for dri-devel@lists.sourceforge.net; Sun, 07 Feb 2010 20:48:02 +0000 Received: from localhost (localhost.localdomain [127.0.0.1]) by ogre.sisk.pl (Postfix) with ESMTP id 3E71B1771B2; Sun, 7 Feb 2010 21:31:34 +0100 (CET) Received: from ogre.sisk.pl ([127.0.0.1]) by localhost (ogre.sisk.pl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 26039-05; Sun, 7 Feb 2010 21:31:26 +0100 (CET) Received: from tosh.localnet (220-bem-13.acn.waw.pl [82.210.184.220]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ogre.sisk.pl (Postfix) with ESMTP id AD48E1770DC; Sun, 7 Feb 2010 21:31:26 +0100 (CET) From: "Rafael J. Wysocki" To: Zhenyu Wang , Alan Jenkins , Eric Anholt Subject: [PATCH] i915 / PM: Fix crash while aborting hibernation (Re: [linux-pm] [regression] "drm/i915: implement new pm ops" disables irq on aborted s2disk) Date: Sun, 7 Feb 2010 21:48:24 +0100 User-Agent: KMail/1.12.4 (Linux/2.6.33-rc7-rjw; KDE/4.3.5; x86_64; ; ) References: <4B695BA0.4000007@tuffmail.co.uk> <201002032344.41915.rjw@sisk.pl> <20100204013157.GA30011@zhen-devel.sh.intel.com> In-Reply-To: <20100204013157.GA30011@zhen-devel.sh.intel.com> MIME-Version: 1.0 Message-Id: <201002072148.24588.rjw@sisk.pl> X-Virus-Scanned: amavisd-new at ogre.sisk.pl using MkS_Vir for Linux X-Spam-Score: -1.8 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.8 AWL AWL: From: address is in the auto white-list X-Headers-End: 1NeE2y-0001xN-99 Cc: linux-pm@lists.linux-foundation.org, dri-devel@lists.sourceforge.net, Kernel Testers List , Jesse Barnes , LKML X-BeenThere: dri-devel@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.sourceforge.net X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Sun, 07 Feb 2010 20:50:04 +0000 (UTC) Index: linux-2.6/drivers/gpu/drm/i915/i915_drv.c =================================================================== --- linux-2.6.orig/drivers/gpu/drm/i915/i915_drv.c +++ linux-2.6/drivers/gpu/drm/i915/i915_drv.c @@ -175,78 +175,100 @@ const static struct pci_device_id pciidl MODULE_DEVICE_TABLE(pci, pciidlist); #endif -static int i915_suspend(struct drm_device *dev, pm_message_t state) +static int i915_drm_freeze(struct drm_device *dev) { - struct drm_i915_private *dev_priv = dev->dev_private; - - if (!dev || !dev_priv) { - DRM_ERROR("dev: %p, dev_priv: %p\n", dev, dev_priv); - DRM_ERROR("DRM not initialized, aborting suspend.\n"); - return -ENODEV; - } - - if (state.event == PM_EVENT_PRETHAW) - return 0; - pci_save_state(dev->pdev); /* If KMS is active, we do the leavevt stuff here */ if (drm_core_check_feature(dev, DRIVER_MODESET)) { - if (i915_gem_idle(dev)) + int error = i915_gem_idle(dev); + if (error) { dev_err(&dev->pdev->dev, - "GEM idle failed, resume may fail\n"); + "GEM idle failed, resume might fail\n"); + return error; + } drm_irq_uninstall(dev); } i915_save_state(dev); + return 0; +} + +static void i915_drm_suspend(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + intel_opregion_free(dev, 1); + /* Modeset on resume, not lid events */ + dev_priv->modeset_on_lid = 0; +} + +static int i915_suspend(struct drm_device *dev, pm_message_t state) +{ + int error; + + if (!dev || !dev->dev_private) { + DRM_ERROR("dev: %p\n", dev); + DRM_ERROR("DRM not initialized, aborting suspend.\n"); + return -ENODEV; + } + + if (state.event == PM_EVENT_PRETHAW) + return 0; + + error = i915_drm_freeze(dev); + if (error) + return error; + + i915_drm_suspend(dev); + if (state.event == PM_EVENT_SUSPEND) { /* Shut down the device */ pci_disable_device(dev->pdev); pci_set_power_state(dev->pdev, PCI_D3hot); } - /* Modeset on resume, not lid events */ - dev_priv->modeset_on_lid = 0; - return 0; } -static int i915_resume(struct drm_device *dev) +static int i915_drm_thaw(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; - int ret = 0; - - if (pci_enable_device(dev->pdev)) - return -1; - pci_set_master(dev->pdev); - - i915_restore_state(dev); - - intel_opregion_init(dev, 1); + int error = 0; /* KMS EnterVT equivalent */ if (drm_core_check_feature(dev, DRIVER_MODESET)) { mutex_lock(&dev->struct_mutex); dev_priv->mm.suspended = 0; - ret = i915_gem_init_ringbuffer(dev); - if (ret != 0) - ret = -1; + error = i915_gem_init_ringbuffer(dev); mutex_unlock(&dev->struct_mutex); drm_irq_install(dev); - } - if (drm_core_check_feature(dev, DRIVER_MODESET)) { + /* Resume the modeset for every activated CRTC */ drm_helper_resume_force_mode(dev); } dev_priv->modeset_on_lid = 0; - return ret; + return error; +} + +static int i915_resume(struct drm_device *dev) +{ + if (pci_enable_device(dev->pdev)) + return -EIO; + + pci_set_master(dev->pdev); + + i915_restore_state(dev); + + intel_opregion_init(dev, 1); + + return i915_drm_thaw(dev); } /** @@ -387,57 +409,69 @@ i915_pci_remove(struct pci_dev *pdev) drm_put_dev(dev); } -static int -i915_pci_suspend(struct pci_dev *pdev, pm_message_t state) +static int i915_pm_suspend(struct device *dev) { - struct drm_device *dev = pci_get_drvdata(pdev); + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + int error; - return i915_suspend(dev, state); -} + if (!drm_dev || !drm_dev->dev_private) { + dev_err(dev, "DRM not initialized, aborting suspend.\n"); + return -ENODEV; + } -static int -i915_pci_resume(struct pci_dev *pdev) -{ - struct drm_device *dev = pci_get_drvdata(pdev); + error = i915_drm_freeze(drm_dev); + if (error) + return error; - return i915_resume(dev); -} + i915_drm_suspend(drm_dev); -static int -i915_pm_suspend(struct device *dev) -{ - return i915_pci_suspend(to_pci_dev(dev), PMSG_SUSPEND); -} + pci_disable_device(pdev); + pci_set_power_state(pdev, PCI_D3hot); -static int -i915_pm_resume(struct device *dev) -{ - return i915_pci_resume(to_pci_dev(dev)); + return 0; } -static int -i915_pm_freeze(struct device *dev) +static int i915_pm_resume(struct device *dev) { - return i915_pci_suspend(to_pci_dev(dev), PMSG_FREEZE); + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + + return i915_resume(drm_dev); } -static int -i915_pm_thaw(struct device *dev) +static int i915_pm_freeze(struct device *dev) { - /* thaw during hibernate, do nothing! */ - return 0; + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + + if (!drm_dev || !drm_dev->dev_private) { + dev_err(dev, "DRM not initialized, aborting suspend.\n"); + return -ENODEV; + } + + return i915_drm_freeze(drm_dev); } -static int -i915_pm_poweroff(struct device *dev) +static int i915_pm_thaw(struct device *dev) { - return i915_pci_suspend(to_pci_dev(dev), PMSG_HIBERNATE); + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + + return i915_drm_thaw(drm_dev); } -static int -i915_pm_restore(struct device *dev) +static int i915_pm_poweroff(struct device *dev) { - return i915_pci_resume(to_pci_dev(dev)); + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + int error; + + error = i915_drm_freeze(drm_dev); + if (!error) + i915_drm_suspend(drm_dev); + + return error; } const struct dev_pm_ops i915_pm_ops = { @@ -446,7 +480,7 @@ const struct dev_pm_ops i915_pm_ops = { .freeze = i915_pm_freeze, .thaw = i915_pm_thaw, .poweroff = i915_pm_poweroff, - .restore = i915_pm_restore, + .restore = i915_pm_resume, }; static struct vm_operations_struct i915_gem_vm_ops = {