From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0126DC433E6 for ; Mon, 29 Mar 2021 08:51:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DAAA8619CC for ; Mon, 29 Mar 2021 08:51:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235664AbhC2IvF (ORCPT ); Mon, 29 Mar 2021 04:51:05 -0400 Received: from mail.kernel.org ([198.145.29.99]:53704 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234705AbhC2Id3 (ORCPT ); Mon, 29 Mar 2021 04:33:29 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D6E3F619D3; Mon, 29 Mar 2021 08:33:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1617006783; bh=jaObR1/HBjGzBGeaeR6jD15n/1J7qNL3EcTToXAExcY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=c/LU9uoY2s22EDBWDTqJoP5wqBJDCScacZfo4lip7bOZiDccW8gEDxzve8mfhlxAO s+z+Y9A6mkovrm7hfbYIdQcX/5eAQkrfwydWmRx7R0AEd+sZkMRjpEuviHlcEpB4kv 0xm1JU4EkbqoAMzIy/+J5gC6x/UWsjixTR+7LChg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lyude Paul , Ben Skeggs Subject: [PATCH 5.11 095/254] drm/nouveau/kms/nve4-nv108: Limit cursors to 128x128 Date: Mon, 29 Mar 2021 09:56:51 +0200 Message-Id: <20210329075636.315462853@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210329075633.135869143@linuxfoundation.org> References: <20210329075633.135869143@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lyude Paul commit d3999c1f7bbbc100c167d7ad3cd79c1d10446ba2 upstream. While Kepler does technically support 256x256 cursors, it turns out that Kepler actually has some additional requirements for scanout surfaces that we're not enforcing correctly, which aren't present on Maxwell and later. Cursor surfaces must always use small pages (4K), and overlay surfaces must always use large pages (128K). Fixing this correctly though will take a bit more work: as we'll need to add some code in prepare_fb() to move cursor FBs in large pages to small pages, and vice-versa for overlay FBs. So until we have the time to do that, just limit cursor surfaces to 128x128 - a size small enough to always default to small pages. This means small ovlys are still broken on Kepler, but it is extremely unlikely anyone cares about those anyway :). Signed-off-by: Lyude Paul Fixes: d3b2f0f7921c ("drm/nouveau/kms/nv50-: Report max cursor size to userspace") Cc: # v5.11+ Signed-off-by: Ben Skeggs Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/nouveau/dispnv50/disp.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -2663,9 +2663,20 @@ nv50_display_create(struct drm_device *d else nouveau_display(dev)->format_modifiers = disp50xx_modifiers; - if (disp->disp->object.oclass >= GK104_DISP) { + /* FIXME: 256x256 cursors are supported on Kepler, however unlike Maxwell and later + * generations Kepler requires that we use small pages (4K) for cursor scanout surfaces. The + * proper fix for this is to teach nouveau to migrate fbs being used for the cursor plane to + * small page allocations in prepare_fb(). When this is implemented, we should also force + * large pages (128K) for ovly fbs in order to fix Kepler ovlys. + * But until then, just limit cursors to 128x128 - which is small enough to avoid ever using + * large pages. + */ + if (disp->disp->object.oclass >= GM107_DISP) { dev->mode_config.cursor_width = 256; dev->mode_config.cursor_height = 256; + } else if (disp->disp->object.oclass >= GK104_DISP) { + dev->mode_config.cursor_width = 128; + dev->mode_config.cursor_height = 128; } else { dev->mode_config.cursor_width = 64; dev->mode_config.cursor_height = 64;