From patchwork Thu Jun 2 23:40:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matt Roper X-Patchwork-Id: 12868269 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D4D44C433EF for ; Thu, 2 Jun 2022 23:40:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5CC5610E3E5; Thu, 2 Jun 2022 23:40:48 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2E2B210E3E5; Thu, 2 Jun 2022 23:40:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1654213247; x=1685749247; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=feZTqGuDT9rTAFa/TB++Je1RG41+SkXjAVWFlTBu09U=; b=emlRAghWDdlCzWkP/CZTac75kkfPlnIzioEybLDya4KRfMHxT7v698mB 2weQ2zxj7eCgdR2Xz++ggjAaESNNRTgqX7gUTHBRDZo6QkqEvHO+UbwjT 89a0EwVVQXPZGNM4yB0nfGHHmyQBJsX+zxVETOJVevoKehNDpyZQ+FCA6 wWG2C0ZSSv1zMkV/u9SgrhgmlrHFISJoPSc2dGqVwy6tuArXxvlCDnJFM 8faJ+QQgv52FudkZuTC0TbTdwHPVPlwBg26FiuQc2yixuI55IiDD6Zq27 MZPCkALWYGvy9r/EtdPSvJEJ0oTJFqYI8lamX75bq3hxVfwn5ou2dc0Bo g==; X-IronPort-AV: E=McAfee;i="6400,9594,10366"; a="274919402" X-IronPort-AV: E=Sophos;i="5.91,272,1647327600"; d="scan'208";a="274919402" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jun 2022 16:40:44 -0700 X-IronPort-AV: E=Sophos;i="5.91,272,1647327600"; d="scan'208";a="553084101" Received: from mdroper-desk1.fm.intel.com ([10.1.27.134]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jun 2022 16:40:43 -0700 From: Matt Roper To: intel-gfx@lists.freedesktop.org Date: Thu, 2 Jun 2022 16:40:41 -0700 Message-Id: <20220602234041.1674691-1-matthew.d.roper@intel.com> X-Mailer: git-send-email 2.35.3 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH] drm/i915/pvc: Add Wa_16015675438:pvc X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Lucas De Marchi , dri-devel@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Badal Nilawar Even though PVC doesn't have an RCS engine, this workaround updates a register in the 0x2xxx range that traditionally belongs to the RCS. We need to set a special flag to tell the GuC that the presence of an "RCS" register on a CCS save/restore list is okay/expected. Cc: Stuart Summers Cc: Lucas De Marchi Signed-off-by: Badal Nilawar Signed-off-by: Matt Roper --- drivers/gpu/drm/i915/gt/intel_gt_regs.h | 1 + drivers/gpu/drm/i915/gt/intel_workarounds.c | 5 +++++ drivers/gpu/drm/i915/gt/uc/intel_guc.c | 4 ++++ drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h | 1 + 4 files changed, 11 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h index 6aa1ceaa8d27..1986579b18ba 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h @@ -140,6 +140,7 @@ #define FF_SLICE_CS_CHICKEN2 _MMIO(0x20e4) #define GEN9_TSG_BARRIER_ACK_DISABLE (1 << 8) #define GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE (1 << 10) +#define GEN12_PERF_FIX_BALANCING_CFE_DISABLE REG_BIT(15) #define GEN9_CS_DEBUG_MODE1 _MMIO(0x20ec) #define FF_DOP_CLOCK_GATE_DISABLE REG_BIT(1) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 6e875d4f5f65..eb0598593724 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -2698,6 +2698,11 @@ general_render_compute_wa_init(struct intel_engine_cs *engine, struct i915_wa_li /* Wa_22014226127:dg2,pvc */ wa_write_or(wal, LSC_CHICKEN_BIT_0, DISABLE_D8_D16_COASLESCE); } + + /* Wa_16015675438:pvc */ + if (IS_PVC_BD_STEP(i915, STEP_B0, STEP_FOREVER)) + wa_masked_en(wal, FF_SLICE_CS_CHICKEN2, + GEN12_PERF_FIX_BALANCING_CFE_DISABLE); } static void diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c index 2c4ad4a65089..7043cf5a666a 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c @@ -327,6 +327,10 @@ static u32 guc_ctl_wa_flags(struct intel_guc *guc) IS_DG2_GRAPHICS_STEP(gt->i915, G11, STEP_A0, STEP_FOREVER)) flags |= GUC_WA_CONTEXT_ISOLATION; + /* Wa_16015675438:pvc */ + if (IS_PVC_BD_STEP(gt->i915, STEP_B0, STEP_FOREVER)) + flags |= GUC_WA_RCS_REGS_IN_CCS_REGS_LIST; + return flags; } diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h index 42cb7a9a6199..b3c9a9327f76 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h @@ -105,6 +105,7 @@ #define GUC_WA_PRE_PARSER BIT(14) #define GUC_WA_HOLD_CCS_SWITCHOUT BIT(17) #define GUC_WA_POLLCS BIT(18) +#define GUC_WA_RCS_REGS_IN_CCS_REGS_LIST BIT(21) #define GUC_CTL_FEATURE 2 #define GUC_CTL_ENABLE_SLPC BIT(2)