From patchwork Fri May 22 17:17:21 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Kuoppala X-Patchwork-Id: 6466831 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 840D19F399 for ; Fri, 22 May 2015 17:17:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B652220499 for ; Fri, 22 May 2015 17:17:30 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id F2CF3202EC for ; Fri, 22 May 2015 17:17:29 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 05D846EB0E; Fri, 22 May 2015 10:17:29 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id E18FC6EB0E for ; Fri, 22 May 2015 10:17:27 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga102.fm.intel.com with ESMTP; 22 May 2015 10:17:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,476,1427785200"; d="scan'208";a="698988075" Received: from rosetta.fi.intel.com (HELO rosetta) ([10.237.72.80]) by orsmga001.jf.intel.com with ESMTP; 22 May 2015 10:17:26 -0700 Received: by rosetta (Postfix, from userid 1000) id 7F44A80057; Fri, 22 May 2015 20:17:25 +0300 (EEST) From: Mika Kuoppala To: intel-gfx@lists.freedesktop.org Date: Fri, 22 May 2015 20:17:21 +0300 Message-Id: <1432315042-31857-1-git-send-email-mika.kuoppala@intel.com> X-Mailer: git-send-email 1.9.1 Cc: miku@iki.fi Subject: [Intel-gfx] [PATCH 1/2] drm/i915: Use masked write for Context Status Buffer Pointer 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, T_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 This register needs to be updated with masked writes. Cc: Damien Lespiau Cc: Thomas Daniel Signed-off-by: Mika Kuoppala --- drivers/gpu/drm/i915/intel_lrc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 96ae90a..14dec0d 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -540,7 +540,8 @@ void intel_lrc_irq_handler(struct intel_engine_cs *ring) ring->next_context_status_buffer = write_pointer % 6; I915_WRITE(RING_CONTEXT_STATUS_PTR(ring), - ((u32)ring->next_context_status_buffer & 0x07) << 8); + _MASKED_FIELD(0x07 << 8, + ((u32)ring->next_context_status_buffer & 0x07) << 8)); } static int execlists_context_queue(struct intel_engine_cs *ring,