From patchwork Tue Oct 28 18:33:14 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: arun.siluvery@linux.intel.com X-Patchwork-Id: 5179011 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 [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id B782EC11AC for ; Tue, 28 Oct 2014 18:33:38 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E35C02017A for ; Tue, 28 Oct 2014 18:33:33 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 1416120155 for ; Tue, 28 Oct 2014 18:33:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 895256E4AE; Tue, 28 Oct 2014 11:33:32 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTP id DBD546E4AE for ; Tue, 28 Oct 2014 11:33:31 -0700 (PDT) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga103.fm.intel.com with ESMTP; 28 Oct 2014 11:27:34 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.04,804,1406617200"; d="scan'208";a="612944339" Received: from asiluver-linux.isw.intel.com ([10.102.226.168]) by fmsmga001.fm.intel.com with ESMTP; 28 Oct 2014 11:33:30 -0700 From: Arun Siluvery To: intel-gfx@lists.freedesktop.org Date: Tue, 28 Oct 2014 18:33:14 +0000 Message-Id: <1414521194-12164-4-git-send-email-arun.siluvery@linux.intel.com> X-Mailer: git-send-email 2.1.2 In-Reply-To: <1414521194-12164-1-git-send-email-arun.siluvery@linux.intel.com> References: <1414521194-12164-1-git-send-email-arun.siluvery@linux.intel.com> Subject: [Intel-gfx] [PATCH 3/3] drm/i915/chv: Add new workarounds for chv 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=-4.8 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 +WaForceEnableNonCoherent:chv +WaHdcDisableFetchWhenMasked:chv For: VIZ-4090 Signed-off-by: Arun Siluvery --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_ringbuffer.c | 10 ++++++++++ 2 files changed, 11 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 77fce96..9d39700 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -5024,6 +5024,7 @@ enum punit_power_well { /* GEN8 chicken */ #define HDC_CHICKEN0 0x7300 #define HDC_FORCE_NON_COHERENT (1<<4) +#define HDC_DONOT_FETCH_MEM_WHEN_MASKED (1<<11) #define HDC_FENCE_DEST_SLM_DISABLE (1<<14) /* WaCatErrorRejectionIssue */ diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 4ef5825..368b20a 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -793,6 +793,16 @@ static int chv_init_workarounds(struct intel_engine_cs *ring) PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE | STALL_DOP_GATING_DISABLE); + /* Use Force Non-Coherent whenever executing a 3D context. This is a + * workaround for a possible hang in the unlikely event a TLB + * invalidation occurs during a PSD flush. + */ + /* WaForceEnableNonCoherent:chv */ + /* WaHdcDisableFetchWhenMasked:chv */ + WA_SET_BIT_MASKED(HDC_CHICKEN0, + HDC_FORCE_NON_COHERENT | + HDC_DONOT_FETCH_MEM_WHEN_MASKED); + return 0; }