From patchwork Tue Jan 19 13:35:40 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zanoni, Paulo R" X-Patchwork-Id: 8062201 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 65F6CBEEE5 for ; Tue, 19 Jan 2016 13:36:33 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8C8D8203FB for ; Tue, 19 Jan 2016 13:36:32 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id A3088203C3 for ; Tue, 19 Jan 2016 13:36:31 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 13C64720BB; Tue, 19 Jan 2016 05:36:30 -0800 (PST) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTP id 773D76E73F for ; Tue, 19 Jan 2016 05:36:26 -0800 (PST) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP; 19 Jan 2016 05:36:16 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,317,1449561600"; d="scan'208";a="893744110" Received: from sundarar-mobl4.amr.corp.intel.com (HELO panetone.amr.corp.intel.com) ([10.252.197.26]) by orsmga002.jf.intel.com with ESMTP; 19 Jan 2016 05:36:15 -0800 From: Paulo Zanoni To: intel-gfx@lists.freedesktop.org Date: Tue, 19 Jan 2016 11:35:40 -0200 Message-Id: <1453210558-7875-8-git-send-email-paulo.r.zanoni@intel.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1453210558-7875-1-git-send-email-paulo.r.zanoni@intel.com> References: <1453210558-7875-1-git-send-email-paulo.r.zanoni@intel.com> Subject: [Intel-gfx] [PATCH 07/25] drm/i915/fbc: don't flush for operations on the wrong frontbuffer 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-Spam-Status: No, score=-4.2 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 X-Virus-Scanned: ClamAV using ClamSMTP If frontbuffer_bits doesn't match the current frontbuffer, there's no reason to recompress or update FBC. There was a plan to make the FBC test suite catch this type of problem, but it never got implemented due to being low priority. While at it, also implement Ville's suggestion and use plane->frontbuffer_bit instead of INTEL_FRONTBUFFER_PRIMARY. Signed-off-by: Paulo Zanoni --- drivers/gpu/drm/i915/intel_fbc.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c index dad4c6e..2f25a45 100644 --- a/drivers/gpu/drm/i915/intel_fbc.c +++ b/drivers/gpu/drm/i915/intel_fbc.c @@ -977,12 +977,19 @@ void intel_fbc_update(struct intel_crtc *crtc) mutex_unlock(&fbc->lock); } +static unsigned int intel_fbc_get_frontbuffer_bit(struct intel_fbc *fbc) +{ + if (fbc->enabled) + return to_intel_plane(fbc->crtc->base.primary)->frontbuffer_bit; + else + return fbc->possible_framebuffer_bits; +} + void intel_fbc_invalidate(struct drm_i915_private *dev_priv, unsigned int frontbuffer_bits, enum fb_op_origin origin) { struct intel_fbc *fbc = &dev_priv->fbc; - unsigned int fbc_bits; if (!fbc_supported(dev_priv)) return; @@ -992,12 +999,7 @@ void intel_fbc_invalidate(struct drm_i915_private *dev_priv, mutex_lock(&fbc->lock); - if (fbc->enabled) - fbc_bits = INTEL_FRONTBUFFER_PRIMARY(fbc->crtc->pipe); - else - fbc_bits = fbc->possible_framebuffer_bits; - - fbc->busy_bits |= (fbc_bits & frontbuffer_bits); + fbc->busy_bits |= intel_fbc_get_frontbuffer_bit(fbc) & frontbuffer_bits; if (fbc->busy_bits) __intel_fbc_deactivate(dev_priv); @@ -1020,7 +1022,8 @@ void intel_fbc_flush(struct drm_i915_private *dev_priv, fbc->busy_bits &= ~frontbuffer_bits; - if (!fbc->busy_bits && fbc->enabled) { + if (!fbc->busy_bits && fbc->enabled && + (frontbuffer_bits & intel_fbc_get_frontbuffer_bit(fbc))) { if (fbc->active) intel_fbc_recompress(dev_priv); else