From patchwork Fri Sep 13 11:47:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Maarten Lankhorst X-Patchwork-Id: 13803313 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 9B4F4FA374A for ; Fri, 13 Sep 2024 11:47:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0E6C310ECEF; Fri, 13 Sep 2024 11:47:51 +0000 (UTC) Received: from mblankhorst.nl (lankhorst.se [141.105.120.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id DCBE010ECE7; Fri, 13 Sep 2024 11:47:49 +0000 (UTC) From: Maarten Lankhorst To: intel-xe@lists.freedesktop.org Cc: intel-gfx@lists.freedesktop.org, Maarten Lankhorst Subject: [PATCH 1/2] drm/xe: Fix DSB buffer coherency Date: Fri, 13 Sep 2024 13:47:53 +0200 Message-ID: <20240913114754.7956-2-maarten.lankhorst@linux.intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240913114754.7956-1-maarten.lankhorst@linux.intel.com> References: <20240913114754.7956-1-maarten.lankhorst@linux.intel.com> MIME-Version: 1.0 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Add the scanout flag to force WC caching, and add the memory barrier where needed. Signed-off-by: Maarten Lankhorst Reviewed-by: Matthew Auld Reviewed-by: Ville Syrjälä --- drivers/gpu/drm/xe/display/xe_dsb_buffer.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/xe/display/xe_dsb_buffer.c b/drivers/gpu/drm/xe/display/xe_dsb_buffer.c index f99d901a3214f..f7949bf5426af 100644 --- a/drivers/gpu/drm/xe/display/xe_dsb_buffer.c +++ b/drivers/gpu/drm/xe/display/xe_dsb_buffer.c @@ -48,11 +48,12 @@ bool intel_dsb_buffer_create(struct intel_crtc *crtc, struct intel_dsb_buffer *d if (!vma) return false; + /* Set scanout flag for WC mapping */ obj = xe_bo_create_pin_map(xe, xe_device_get_root_tile(xe), NULL, PAGE_ALIGN(size), ttm_bo_type_kernel, XE_BO_FLAG_VRAM_IF_DGFX(xe_device_get_root_tile(xe)) | - XE_BO_FLAG_GGTT); + XE_BO_FLAG_SCANOUT | XE_BO_FLAG_GGTT); if (IS_ERR(obj)) { kfree(vma); return false; @@ -73,5 +74,5 @@ void intel_dsb_buffer_cleanup(struct intel_dsb_buffer *dsb_buf) void intel_dsb_buffer_flush_map(struct intel_dsb_buffer *dsb_buf) { - /* TODO: add xe specific flush_map() for dsb buffer object. */ + xe_device_wmb(dsb_buf->vma->bo->tile->xe); }