From patchwork Fri May 29 18:03:23 2015 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: 6510331 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 35889C0020 for ; Fri, 29 May 2015 18:04:13 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 809B320842 for ; Fri, 29 May 2015 18:04:08 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 77274204CF for ; Fri, 29 May 2015 18:04:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C64B36EE30; Fri, 29 May 2015 11:04:06 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id 765C36EE30 for ; Fri, 29 May 2015 11:04:05 -0700 (PDT) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 29 May 2015 11:03:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,518,1427785200"; d="scan'208";a="733842483" Received: from asiluver-linux.isw.intel.com ([10.102.226.85]) by fmsmga002.fm.intel.com with ESMTP; 29 May 2015 11:03:40 -0700 From: Arun Siluvery To: intel-gfx@lists.freedesktop.org Date: Fri, 29 May 2015 19:03:23 +0100 Message-Id: <1432922605-5893-6-git-send-email-arun.siluvery@linux.intel.com> X-Mailer: git-send-email 2.3.0 In-Reply-To: <1432922605-5893-1-git-send-email-arun.siluvery@linux.intel.com> References: <1432922605-5893-1-git-send-email-arun.siluvery@linux.intel.com> Subject: [Intel-gfx] [PATCH v2 5/7] drm/i915/gen8: Add WaFlushCoherentL3CacheLinesAtContextSwitch workaround 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, TVD_SPACE_RATIO, 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 In Indirect context w/a batch buffer, +WaFlushCoherentL3CacheLinesAtContextSwitch Signed-off-by: Rafael Barbalho Signed-off-by: Arun Siluvery --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_lrc.c | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 84af255..5203c79 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -426,6 +426,7 @@ #define PIPE_CONTROL_INDIRECT_STATE_DISABLE (1<<9) #define PIPE_CONTROL_NOTIFY (1<<8) #define PIPE_CONTROL_FLUSH_ENABLE (1<<7) /* gen7+ */ +#define PIPE_CONTROL_DC_FLUSH_ENABLE (1<<5) #define PIPE_CONTROL_VF_CACHE_INVALIDATE (1<<4) #define PIPE_CONTROL_CONST_CACHE_INVALIDATE (1<<3) #define PIPE_CONTROL_STATE_CACHE_INVALIDATE (1<<2) diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 8ed6433..24a7dcd 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -1132,6 +1132,14 @@ static int gen8_init_indirectctx_bb(struct intel_engine_cs *ring, /* WaDisableCtxRestoreArbitration:bdw,chv */ intel_logical_ring_emit(ringbuf, MI_ARB_ON_OFF | MI_ARB_DISABLE); + /* WaFlushCoherentL3CacheLinesAtContextSwitch:bdw,chv */ + intel_logical_ring_emit(ringbuf, GFX_OP_PIPE_CONTROL(6)); + intel_logical_ring_emit(ringbuf, PIPE_CONTROL_DC_FLUSH_ENABLE); + intel_logical_ring_emit(ringbuf, 0); + intel_logical_ring_emit(ringbuf, 0); + intel_logical_ring_emit(ringbuf, 0); + intel_logical_ring_emit(ringbuf, 0); + /* padding */ while (((unsigned long) ringbuf->tail % CACHELINE_BYTES) != 0) intel_logical_ring_emit(ringbuf, MI_NOOP);