From patchwork Fri Jun 10 13:36:25 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: akash.goel@intel.com X-Patchwork-Id: 9169809 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 0EB9160573 for ; Fri, 10 Jun 2016 13:23:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0031A2835D for ; Fri, 10 Jun 2016 13:23:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E8A2A28362; Fri, 10 Jun 2016 13:23:58 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A82342835D for ; Fri, 10 Jun 2016 13:23:58 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4D9DA6ED4A; Fri, 10 Jun 2016 13:23:52 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id C2D806ED41 for ; Fri, 10 Jun 2016 13:23:30 +0000 (UTC) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga102.jf.intel.com with ESMTP; 10 Jun 2016 06:23:30 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,449,1459839600"; d="scan'208";a="825507035" Received: from akashgoe-desktop.iind.intel.com ([10.223.82.36]) by orsmga003.jf.intel.com with ESMTP; 10 Jun 2016 06:23:30 -0700 From: akash.goel@intel.com To: intel-gfx@lists.freedesktop.org Date: Fri, 10 Jun 2016 19:06:25 +0530 Message-Id: <1465565789-30570-8-git-send-email-akash.goel@intel.com> X-Mailer: git-send-email 1.9.2 In-Reply-To: <1465565789-30570-1-git-send-email-akash.goel@intel.com> References: <1465565789-30570-1-git-send-email-akash.goel@intel.com> Cc: sourab.gupta@intel.com, Akash Goel Subject: [Intel-gfx] [PATCH 07/11] drm/i915: Forcefully flush GuC log buffer on reset X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 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 From: Sagar Arun Kamble If GuC logs are being captured, there should be a force log buffer flush action sent to GuC before proceeding with GPU reset and re-initializing GUC. Those logs would be useful to understand why the GPU reset was initiated. Signed-off-by: Sagar Arun Kamble Signed-off-by: Akash Goel --- drivers/gpu/drm/i915/i915_guc_submission.c | 25 +++++++++++++++++++++++++ drivers/gpu/drm/i915/i915_irq.c | 2 ++ drivers/gpu/drm/i915/intel_guc.h | 1 + 3 files changed, 28 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c index 14f53de..4590cb4 100644 --- a/drivers/gpu/drm/i915/i915_guc_submission.c +++ b/drivers/gpu/drm/i915/i915_guc_submission.c @@ -169,6 +169,16 @@ static int host2guc_sample_forcewake(struct intel_guc *guc, return host2guc_action(guc, data, ARRAY_SIZE(data)); } +static int host2guc_force_logbuffer_flush(struct intel_guc *guc) +{ + u32 data[2]; + + data[0] = HOST2GUC_ACTION_FORCE_LOGBUFFERFLUSH; + data[1] = 0; + + return host2guc_action(guc, data, 2); +} + /* * Initialise, update, or clear doorbell data shared with the GuC * @@ -1233,3 +1243,18 @@ void i915_guc_capture_logs(struct drm_device *dev) if (host2guc_action(guc, data, 1)) DRM_ERROR("Failed\n"); } + +void i915_guc_capture_logs_on_reset(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_guc *guc = &dev_priv->guc; + + /* First disable the interrupts, will be renabled after reset */ + gen9_disable_guc_interrupts(dev_priv); + + /* Ask GuC to update the log buffer state */ + host2guc_force_logbuffer_flush(guc); + + /* GuC would have updated the log buffer by now, so capture it */ + i915_guc_capture_logs(dev); +} diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 5da2b0b..0234c7f 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2701,6 +2701,8 @@ static void i915_reset_and_wakeup(struct drm_i915_private *dev_priv) */ intel_runtime_pm_get(dev_priv); + i915_guc_capture_logs_on_reset(dev_priv->dev); + intel_prepare_reset(dev_priv); /* diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h index bf61925..3999f7b 100644 --- a/drivers/gpu/drm/i915/intel_guc.h +++ b/drivers/gpu/drm/i915/intel_guc.h @@ -169,5 +169,6 @@ int i915_guc_submit(struct drm_i915_gem_request *rq); void i915_guc_submission_disable(struct drm_device *dev); void i915_guc_submission_fini(struct drm_device *dev); void i915_guc_capture_logs(struct drm_device *dev); +void i915_guc_capture_logs_on_reset(struct drm_device *dev); #endif