From patchwork Fri Jun 3 11:40:00 2016 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: 9152945 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8F3F160751 for ; Fri, 3 Jun 2016 11:40:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7EE7828309 for ; Fri, 3 Jun 2016 11:40:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7366328328; Fri, 3 Jun 2016 11:40:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8508E28309 for ; Fri, 3 Jun 2016 11:40:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 71D516ED7C; Fri, 3 Jun 2016 11:40:06 +0000 (UTC) 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 EB12A6ED7C for ; Fri, 3 Jun 2016 11:40:04 +0000 (UTC) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 03 Jun 2016 04:40:04 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,411,1459839600"; d="scan'208";a="994503359" Received: from asiluver-linux.isw.intel.com ([10.102.226.117]) by fmsmga002.fm.intel.com with ESMTP; 03 Jun 2016 04:40:03 -0700 From: Arun Siluvery To: intel-gfx@lists.freedesktop.org Date: Fri, 3 Jun 2016 12:40:00 +0100 Message-Id: <1464954000-35400-1-git-send-email-arun.siluvery@linux.intel.com> X-Mailer: git-send-email 1.9.1 Subject: [Intel-gfx] [PATCH] drm/i915/gen9: Add WaVFEStateAfterPipeControlwithMediaStateClear 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-Virus-Scanned: ClamAV using ClamSMTP Kernel only need to add a register to HW whitelist, required for a preemption related issue. Reference: HSD#2131039 Signed-off-by: Arun Siluvery Reviewed-by: Jeff McGee --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_ringbuffer.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index e307725..1f6040a 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6072,6 +6072,7 @@ enum skl_disp_power_wells { #define GEN9_TSG_BARRIER_ACK_DISABLE (1<<8) #define GEN9_CS_DEBUG_MODE1 _MMIO(0x20ec) +#define GEN9_CTX_PREEMPT_REG _MMIO(0x2248) #define GEN8_CS_CHICKEN1 _MMIO(0x2580) /* GEN7 chicken */ diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 8d35a39..1f9d3a4 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -987,6 +987,11 @@ static int gen9_init_workarounds(struct intel_engine_cs *engine) I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) | GEN8_LQSC_FLUSH_COHERENT_LINES)); + /* WaVFEStateAfterPipeControlwithMediaStateClear:skl,bxt */ + ret= wa_ring_whitelist_reg(engine, GEN9_CTX_PREEMPT_REG); + if (ret) + return ret; + /* WaEnablePreemptionGranularityControlByUMD:skl,bxt */ ret= wa_ring_whitelist_reg(engine, GEN8_CS_CHICKEN1); if (ret)