From patchwork Tue Oct 21 10:43:47 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dheeraj Jamwal X-Patchwork-Id: 5113001 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 3FD79C11AC for ; Tue, 21 Oct 2014 10:59:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6059720138 for ; Tue, 21 Oct 2014 10:59:30 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 831402012F for ; Tue, 21 Oct 2014 10:59:29 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 6367CAFF; Tue, 21 Oct 2014 10:57:56 +0000 (UTC) X-Original-To: ltsi-dev@lists.linuxfoundation.org Delivered-To: ltsi-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id A21A4B78 for ; Tue, 21 Oct 2014 10:57:54 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 42E9920114 for ; Tue, 21 Oct 2014 10:57:54 +0000 (UTC) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP; 21 Oct 2014 03:57:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.04,761,1406617200"; d="scan'208";a="617791321" Received: from ubuntu-desktop.png.intel.com ([10.221.122.25]) by fmsmga002.fm.intel.com with ESMTP; 21 Oct 2014 03:57:53 -0700 From: Dheeraj Jamwal To: ltsi-dev@lists.linuxfoundation.org Date: Tue, 21 Oct 2014 18:43:47 +0800 Message-Id: <1413889294-31328-28-git-send-email-dheerajx.s.jamwal@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1413889294-31328-1-git-send-email-dheerajx.s.jamwal@intel.com> References: <1413889294-31328-1-git-send-email-dheerajx.s.jamwal@intel.com> X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org Subject: [LTSI-dev] [PATCH 0027/1094] drm/i915: Generalize PPGTT init X-BeenThere: ltsi-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: "A list to discuss patches, development, and other things related to the LTSI project" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ltsi-dev-bounces@lists.linuxfoundation.org Errors-To: ltsi-dev-bounces@lists.linuxfoundation.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ben Widawsky Rearrange the initialization code to try to special case the aliasing PPGTT less, and provide usable interfaces for the general case later. Signed-off-by: Ben Widawsky Signed-off-by: Daniel Vetter (cherry picked from commit d6660add648d10e7e35085d8c7d2653e0f9f61b7) Signed-off-by: Dheeraj Jamwal --- drivers/gpu/drm/i915/i915_gem_gtt.c | 34 +++++++++++++++++++--------------- 1 file changed, 19 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index e467ab28..02a3c66 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -892,15 +892,11 @@ err_pt_alloc: return ret; } -static int i915_gem_init_aliasing_ppgtt(struct drm_device *dev) +static int i915_gem_init_ppgtt(struct drm_device *dev, + struct i915_hw_ppgtt *ppgtt) { struct drm_i915_private *dev_priv = dev->dev_private; - struct i915_hw_ppgtt *ppgtt; - int ret; - - ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL); - if (!ppgtt) - return -ENOMEM; + int ret = 0; ppgtt->base.dev = dev; @@ -911,13 +907,9 @@ static int i915_gem_init_aliasing_ppgtt(struct drm_device *dev) else BUG(); - if (ret) - kfree(ppgtt); - else { - dev_priv->mm.aliasing_ppgtt = ppgtt; + if (!ret) drm_mm_init(&ppgtt->base.mm, ppgtt->base.start, ppgtt->base.total); - } return ret; } @@ -1432,11 +1424,23 @@ void i915_gem_init_global_gtt(struct drm_device *dev) i915_gem_setup_global_gtt(dev, 0, mappable_size, gtt_size); if (intel_enable_ppgtt(dev) && HAS_ALIASING_PPGTT(dev)) { + struct i915_hw_ppgtt *ppgtt; int ret; - ret = i915_gem_init_aliasing_ppgtt(dev); - if (ret) - DRM_ERROR("Aliased PPGTT setup failed %d\n", ret); + ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL); + if (!ppgtt) { + DRM_ERROR("Aliased PPGTT setup failed -ENOMEM\n"); + return; + } + + ret = i915_gem_init_ppgtt(dev, ppgtt); + if (!ret) { + dev_priv->mm.aliasing_ppgtt = ppgtt; + return; + } + + kfree(ppgtt); + DRM_ERROR("Aliased PPGTT setup failed %d\n", ret); } }