From patchwork Fri May 25 09:31:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 10426713 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A11B5602D8 for ; Fri, 25 May 2018 09:32:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8F72029615 for ; Fri, 25 May 2018 09:32:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8477E2961B; Fri, 25 May 2018 09:32:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 29A5229615 for ; Fri, 25 May 2018 09:32:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7B8466E8F1; Fri, 25 May 2018 09:32:22 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 89F836E178 for ; Fri, 25 May 2018 09:32:20 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from haswell.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 11837978-1500050 for multiple; Fri, 25 May 2018 10:32:09 +0100 Received: by haswell.alporthouse.com (sSMTP sendmail emulation); Fri, 25 May 2018 10:32:09 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Fri, 25 May 2018 10:31:49 +0100 Message-Id: <20180525093206.1919-2-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180525093206.1919-1-chris@chris-wilson.co.uk> References: <20180525093206.1919-1-chris@chris-wilson.co.uk> X-Originating-IP: 78.156.65.138 X-Country: code=GB country="United Kingdom" ip=78.156.65.138 Subject: [Intel-gfx] [PATCH 01/18] drm/i915: Prepare GEM for suspend earlier X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP In order to prepare the GPU for sleeping, we may want to submit commands to it. This is a complicated process that may even require some swapping in from shmemfs, if the GPU was in the wrong state. As such, we need to do this preparation step synchronously before the rest of the system has started to turn off (e.g. swapin fails if scsi is suspended). Fortunately, we are provided with a such a hook, pm_ops.prepare(). v2: Compile cleanup v3: Fewer asserts, fewer problems? Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106640 Testcase: igt/drv_suspend after igt/gem_tiled_swapping Signed-off-by: Chris Wilson Reviewed-by: Mika Kuoppala --- drivers/gpu/drm/i915/i915_drv.c | 41 +++++++++++++++++++++++++-------- 1 file changed, 31 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 9c449b8d8eab..9d6ac7f44812 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1553,12 +1553,24 @@ static bool suspend_to_idle(struct drm_i915_private *dev_priv) return false; } +static int i915_drm_prepare(struct drm_device *dev) +{ + struct drm_i915_private *i915 = to_i915(dev); + int err; + + err = i915_gem_suspend(i915); + if (err) + dev_err(&i915->drm.pdev->dev, + "GEM idle failed, suspend/resume might fail\n"); + + return err; +} + static int i915_drm_suspend(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = dev_priv->drm.pdev; pci_power_t opregion_target_state; - int error; /* ignore lid events during suspend */ mutex_lock(&dev_priv->modeset_restore_lock); @@ -1575,13 +1587,6 @@ static int i915_drm_suspend(struct drm_device *dev) pci_save_state(pdev); - error = i915_gem_suspend(dev_priv); - if (error) { - dev_err(&pdev->dev, - "GEM idle failed, resume might fail\n"); - goto out; - } - intel_display_suspend(dev); intel_dp_mst_suspend(dev); @@ -1609,10 +1614,9 @@ static int i915_drm_suspend(struct drm_device *dev) intel_csr_ucode_suspend(dev_priv); -out: enable_rpm_wakeref_asserts(dev_priv); - return error; + return 0; } static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation) @@ -2081,6 +2085,22 @@ int i915_reset_engine(struct intel_engine_cs *engine, const char *msg) return ret; } +static int i915_pm_prepare(struct device *kdev) +{ + struct pci_dev *pdev = to_pci_dev(kdev); + struct drm_device *dev = pci_get_drvdata(pdev); + + if (!dev) { + dev_err(kdev, "DRM not initialized, aborting suspend.\n"); + return -ENODEV; + } + + if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) + return 0; + + return i915_drm_prepare(dev); +} + static int i915_pm_suspend(struct device *kdev) { struct pci_dev *pdev = to_pci_dev(kdev); @@ -2731,6 +2751,7 @@ const struct dev_pm_ops i915_pm_ops = { * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND, * PMSG_RESUME] */ + .prepare = i915_pm_prepare, .suspend = i915_pm_suspend, .suspend_late = i915_pm_suspend_late, .resume_early = i915_pm_resume_early,