From patchwork Tue Dec 14 17:04:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Brost X-Patchwork-Id: 12676489 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8B904C433EF for ; Tue, 14 Dec 2021 17:14:56 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D585610E259; Tue, 14 Dec 2021 17:14:44 +0000 (UTC) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id 85DA110E1D4; Tue, 14 Dec 2021 17:14:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1639502074; x=1671038074; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=EAI1zzp+pVh0LIc0SItFf3X1uGyMPd6uOR9y7CfFiI8=; b=KC/PJCN00yMpdyybucmfjhcy0YjWWMofqLHG3wOI827jZF6crD+ieD/U 4GizUqkpgtQNSzIpyPPoQhof5echFv/FNNoSjdLVQqRyNDWDWzWsLrpJA rnEyef9KI479qwPlrkFDrjq3R2nryAbhBzc/lAk6YeR7LZVK8hCCfCikR uO5FJPvIIYTotluCZ4mZcH+BrGdY2n+x2elObCW915ZiARI3QcqM3Nuh0 Ew4s0aeyNiWv1H8l3JtTJdOTBYFURn3h41m6JeTlOttaBmRNJZ46lK/AS SvjvJ1E8XG+tlUbMSaB3IiMa941SqP8QH0QuT20eUXWHFWewQHU2wSsnd Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10197"; a="302405485" X-IronPort-AV: E=Sophos;i="5.88,205,1635231600"; d="scan'208";a="302405485" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Dec 2021 09:10:28 -0800 X-IronPort-AV: E=Sophos;i="5.88,205,1635231600"; d="scan'208";a="614357556" Received: from jons-linux-dev-box.fm.intel.com ([10.1.27.20]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Dec 2021 09:10:26 -0800 From: Matthew Brost To: , Subject: [PATCH 5/7] drm/i915/guc: Add extra debug on CT deadlock Date: Tue, 14 Dec 2021 09:04:58 -0800 Message-Id: <20211214170500.28569-6-matthew.brost@intel.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211214170500.28569-1-matthew.brost@intel.com> References: <20211214170500.28569-1-matthew.brost@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: daniele.ceraolospurio@intel.com, john.c.harrison@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Print CT state (H2G + G2H head / tail pointers, credits) on CT deadlock. v2: (John Harrison) - Add units to debug messages Reviewed-by: John Harrison Signed-off-by: Matthew Brost --- drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c index a0cc34be7b56..741be9abab68 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c @@ -523,6 +523,15 @@ static inline bool ct_deadlocked(struct intel_guc_ct *ct) CT_ERROR(ct, "Communication stalled for %lld ms, desc status=%#x,%#x\n", ktime_ms_delta(ktime_get(), ct->stall_time), send->status, recv->status); + CT_ERROR(ct, "H2G Space: %u (Bytes)\n", + atomic_read(&ct->ctbs.send.space) * 4); + CT_ERROR(ct, "Head: %u (Dwords)\n", ct->ctbs.send.desc->head); + CT_ERROR(ct, "Tail: %u (Dwords)\n", ct->ctbs.send.desc->tail); + CT_ERROR(ct, "G2H Space: %u (Bytes)\n", + atomic_read(&ct->ctbs.recv.space) * 4); + CT_ERROR(ct, "Head: %u\n (Dwords)", ct->ctbs.recv.desc->head); + CT_ERROR(ct, "Tail: %u\n (Dwords)", ct->ctbs.recv.desc->tail); + ct->ctbs.send.broken = true; }