From patchwork Wed Aug 21 12:43:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andi Shyti X-Patchwork-Id: 13771374 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 A1E49C52D7C for ; Wed, 21 Aug 2024 12:44:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C5B5A10E8E6; Wed, 21 Aug 2024 12:44:21 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="ip3am3Uy"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8D08610E8E3; Wed, 21 Aug 2024 12:44:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1724244261; x=1755780261; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=xBTBmpL924eHLaGaJlxfMEUf+QEa13q0knxeUnC7CKw=; b=ip3am3UyLOF8Bc+U59i2NZ3Po93pzRfgB56OkLMo7j2je8MVKlCsXvPu N2wkKKp6ehXpp4ADi33yCUnssju807J0471YKRHBQyLbDzrpj/lyqo8et 4+Cil6p5WPothqb6//6NjFElTPtLuNlwOW8KXtagH0abT/iaPlJToE35B IM+7nnfC9m8BkCzoH+Nh//+ls9XByfDCP5IhAVyLom6gJqJ4J9yo5gTBk Lzi3N/Vwqs+G+JE9T4SOfv4t0NoDkNpNHb8IJ6tmyOmM+cXNHkRHz2vLI m8eybXonmG6GA/w52+6JTZegQRVdIPIbBEshnwdyj52zunCnnUP6YlRrH w==; X-CSE-ConnectionGUID: hiVxoH59QPyh9o3jWDkvMg== X-CSE-MsgGUID: 405AoY1MQw2pq1uGDw5e0w== X-IronPort-AV: E=McAfee;i="6700,10204,11171"; a="33754095" X-IronPort-AV: E=Sophos;i="6.10,164,1719903600"; d="scan'208";a="33754095" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Aug 2024 05:44:21 -0700 X-CSE-ConnectionGUID: ygyWBnM9RNaQYWZIj2LzRQ== X-CSE-MsgGUID: tIuPv35nRGuwjBKIvWvGqQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,164,1719903600"; d="scan'208";a="98554596" Received: from bergbenj-mobl1.ger.corp.intel.com (HELO intel.com) ([10.245.246.24]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Aug 2024 05:44:18 -0700 From: Andi Shyti To: intel-gfx , dri-devel Cc: Chris Wilson , Tvrtko Ursulin , Andi Shyti Subject: [PATCH v1 01/14] drm/i915/gt: Avoid using masked workaround for CCS_MODE setting Date: Wed, 21 Aug 2024 14:43:36 +0200 Message-ID: <20240821124349.295259-2-andi.shyti@linux.intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240821124349.295259-1-andi.shyti@linux.intel.com> References: <20240821124349.295259-1-andi.shyti@linux.intel.com> MIME-Version: 1.0 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" When setting the CCS mode, we mistakenly used wa_masked_en() to apply the workaround, which reads from the register and masks the existing value with the new one. Our intention was to write the value directly, without masking it. So far, this hasn't caused issues because we've been using a register value that only enables a single CCS engine, typically with an ID of '0'. However, in upcoming patches, we will be utilizing multiple engines, and it's crucial that we write the new value directly without any masking. Signed-off-by: Andi Shyti --- drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index bfe6d8fc820f..f3082fad3f45 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -2745,7 +2745,7 @@ static void ccs_engine_wa_mode(struct intel_engine_cs *engine, struct i915_wa_li * assign all slices to a single CCS. We will call it CCS mode 1 */ mode = intel_gt_apply_ccs_mode(gt); - wa_masked_en(wal, XEHP_CCS_MODE, mode); + wa_add(wal, XEHP_CCS_MODE, 0, mode, mode, false); } /*