From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 28F722144AE for ; Wed, 28 May 2025 08:23:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748420627; cv=none; b=qMPZj+yUPFOiy2O/5f6vyMuTfKZ2MOLGNfO7BqEnN6qkwodNLvMHiCWFchAdI6yPy0MRK6KA8ECCQ76TJdU3TJaVoEVbxWfD1iazmg/Xr8RldMJfVMYbYj2J7SZi1EkaxR+cxlGisinTZgmLwVqC938PYxW72AfIA3EsIPsb5xU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748420627; c=relaxed/simple; bh=hPpCkqmIV43PRTAs+6NgJYsugLDjdi0tBiqd5hG+J4U=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=e4Z9qnq6z/CRoAHFn53pElhfm9EI6BjWTDVBWI6NlG83pE0c2mSzHvNfbRZ2st8Yij10FQ+y9bvZfkhpvzOI6K+up8KYh7EisErjxKfqs3ndRzXohEglmDu6gVaFkTR+U6GI3UEjG2ufEtsQ6qx6aqXopOGDVgyu+25GEZ4n5w8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de; spf=pass smtp.mailfrom=suse.de; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b=XQBmtfRd; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b=dvJt6W9e; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b=XQBmtfRd; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b=dvJt6W9e; arc=none smtp.client-ip=195.135.223.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b="XQBmtfRd"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="dvJt6W9e"; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b="XQBmtfRd"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="dvJt6W9e" Received: from imap1.dmz-prg2.suse.org (unknown [10.150.64.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 5358A21D18; Wed, 28 May 2025 08:23:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1748420622; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=IsYeUMzNWf+c4bLmoKUOHp5YpWvtC7v74oJ9jXBtnHM=; b=XQBmtfRd9f0BD+wpJmfsDg89bjVUFtWxyB8+k37xabISALbh+H9l1F8nnknU7GJur2Ir6r Kmlkb+phPU6vHmBUvrOzKLyPdCDiqZ5OX7tAinz1caXlC0ZC8KfcFq7XHirFV3R3ifXNaY lyqWj/ehrK8c6iCWlXr1VU2Q1LKJ/G4= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1748420622; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=IsYeUMzNWf+c4bLmoKUOHp5YpWvtC7v74oJ9jXBtnHM=; b=dvJt6W9eqTR5Rd+KiuP01H+RwKo8jKPYSaFQcOmtWsSoyOZPFSM4P/6LbT/SZoQfSnPT4b VftOkM9jdhB63YBw== Authentication-Results: smtp-out1.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1748420622; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=IsYeUMzNWf+c4bLmoKUOHp5YpWvtC7v74oJ9jXBtnHM=; b=XQBmtfRd9f0BD+wpJmfsDg89bjVUFtWxyB8+k37xabISALbh+H9l1F8nnknU7GJur2Ir6r Kmlkb+phPU6vHmBUvrOzKLyPdCDiqZ5OX7tAinz1caXlC0ZC8KfcFq7XHirFV3R3ifXNaY lyqWj/ehrK8c6iCWlXr1VU2Q1LKJ/G4= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1748420622; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=IsYeUMzNWf+c4bLmoKUOHp5YpWvtC7v74oJ9jXBtnHM=; b=dvJt6W9eqTR5Rd+KiuP01H+RwKo8jKPYSaFQcOmtWsSoyOZPFSM4P/6LbT/SZoQfSnPT4b VftOkM9jdhB63YBw== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id CC0DA136E0; Wed, 28 May 2025 08:23:41 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id pmh/MA3INmgxVwAAD6G6ig (envelope-from ); Wed, 28 May 2025 08:23:41 +0000 Message-ID: <1926848a-9334-4c15-a076-a93ef29c80d6@suse.de> Date: Wed, 28 May 2025 10:23:41 +0200 Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 00/25] drm/dumb-buffers: Fix and improve buffer-size calculation To: simona@ffwll.ch, airlied@gmail.com, mripard@kernel.org, maarten.lankhorst@linux.intel.com, geert@linux-m68k.org, tomi.valkeinen@ideasonboard.com Cc: dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, imx@lists.linux.dev, linux-samsung-soc@vger.kernel.org, nouveau@lists.freedesktop.org, virtualization@lists.linux.dev, spice-devel@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-tegra@vger.kernel.org, intel-xe@lists.freedesktop.org, xen-devel@lists.xenproject.org References: <20250311155120.442633-1-tzimmermann@suse.de> Content-Language: en-US From: Thomas Zimmermann Autocrypt: addr=tzimmermann@suse.de; keydata= xsBNBFs50uABCADEHPidWt974CaxBVbrIBwqcq/WURinJ3+2WlIrKWspiP83vfZKaXhFYsdg XH47fDVbPPj+d6tQrw5lPQCyqjwrCPYnq3WlIBnGPJ4/jreTL6V+qfKRDlGLWFjZcsrPJGE0 BeB5BbqP5erN1qylK9i3gPoQjXGhpBpQYwRrEyQyjuvk+Ev0K1Jc5tVDeJAuau3TGNgah4Yc hdHm3bkPjz9EErV85RwvImQ1dptvx6s7xzwXTgGAsaYZsL8WCwDaTuqFa1d1jjlaxg6+tZsB 9GluwvIhSezPgnEmimZDkGnZRRSFiGP8yjqTjjWuf0bSj5rUnTGiyLyRZRNGcXmu6hjlABEB AAHNJ1Rob21hcyBaaW1tZXJtYW5uIDx0emltbWVybWFubkBzdXNlLmRlPsLAjgQTAQgAOAIb AwULCQgHAgYVCgkICwIEFgIDAQIeAQIXgBYhBHIX+6yM6c9jRKFo5WgNwR1TC3ojBQJftODH AAoJEGgNwR1TC3ojx1wH/0hKGWugiqDgLNXLRD/4TfHBEKmxIrmfu9Z5t7vwUKfwhFL6hqvo lXPJJKQpQ2z8+X2vZm/slsLn7J1yjrOsoJhKABDi+3QWWSGkaGwRJAdPVVyJMfJRNNNIKwVb U6B1BkX2XDKDGffF4TxlOpSQzdtNI/9gleOoUA8+jy8knnDYzjBNOZqLG2FuTdicBXblz0Mf vg41gd9kCwYXDnD91rJU8tzylXv03E75NCaTxTM+FBXPmsAVYQ4GYhhgFt8S2UWMoaaABLDe 7l5FdnLdDEcbmd8uLU2CaG4W2cLrUaI4jz2XbkcPQkqTQ3EB67hYkjiEE6Zy3ggOitiQGcqp j//OwE0EWznS4AEIAMYmP4M/V+T5RY5at/g7rUdNsLhWv1APYrh9RQefODYHrNRHUE9eosYb T6XMryR9hT8XlGOYRwKWwiQBoWSDiTMo/Xi29jUnn4BXfI2px2DTXwc22LKtLAgTRjP+qbU6 3Y0xnQN29UGDbYgyyK51DW3H0If2a3JNsheAAK+Xc9baj0LGIc8T9uiEWHBnCH+RdhgATnWW GKdDegUR5BkDfDg5O/FISymJBHx2Dyoklv5g4BzkgqTqwmaYzsl8UxZKvbaxq0zbehDda8lv hFXodNFMAgTLJlLuDYOGLK2AwbrS3Sp0AEbkpdJBb44qVlGm5bApZouHeJ/+n+7r12+lqdsA EQEAAcLAdgQYAQgAIAIbDBYhBHIX+6yM6c9jRKFo5WgNwR1TC3ojBQJftOH6AAoJEGgNwR1T C3ojVSkIALpAPkIJPQoURPb1VWjh34l0HlglmYHvZszJWTXYwavHR8+k6Baa6H7ufXNQtThR yIxJrQLW6rV5lm7TjhffEhxVCn37+cg0zZ3j7zIsSS0rx/aMwi6VhFJA5hfn3T0TtrijKP4A SAQO9xD1Zk9/61JWk8OysuIh7MXkl0fxbRKWE93XeQBhIJHQfnc+YBLprdnxR446Sh8Wn/2D Ya8cavuWf2zrB6cZurs048xe0UbSW5AOSo4V9M0jzYI4nZqTmPxYyXbm30Kvmz0rYVRaitYJ 4kyYYMhuULvrJDMjZRvaNe52tkKAvMevcGdt38H4KSVXAylqyQOW5zvPc4/sq9c= In-Reply-To: <20250311155120.442633-1-tzimmermann@suse.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Flag: NO X-Spam-Score: -2.80 X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-0.996]; MIME_GOOD(-0.10)[text/plain]; FREEMAIL_TO(0.00)[ffwll.ch,gmail.com,kernel.org,linux.intel.com,linux-m68k.org,ideasonboard.com]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_TWELVE(0.00)[20]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; RCVD_TLS_ALL(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TO_DN_NONE(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid,imap1.dmz-prg2.suse.org:helo] X-Spam-Level: ping I'm still looking for more reviews; especially patches 1 and 2. Best regards Thomas Am 11.03.25 um 16:47 schrieb Thomas Zimmermann: > Dumb-buffer pitch and size is specified by width, height, bits-per-pixel > plus various hardware-specific alignments. The calculation of these > values is inconsistent and duplicated among drivers. The results for > formats with bpp < 8 are sometimes incorrect. > > This series fixes this for most drivers. Default scanline pitch and > buffer size are now calculated with the existing 4CC helpers. There is > a new helper drm_mode_size_dumb() that calculates scanline pitch and > buffer size according to driver requirements. > > The series fixes the common GEM implementations for DMA, SHMEM and > VRAM. It further changes most implementations of dumb_create to use > the new helper. A small number of drivers has more complicated > calculations and will be updated by a later patches. > > v4: > - improve UAPI documentation > - document bpp special cases > - use drm_warn_once() > - add TODO lists > - armada: fix pitch alignment > v3: > - document UAPI semantics > - fall back to bpp-based allocation for unknown color modes > - cleanups > v2: > - rewrite series > - convert many individual drivers besides the shared GEM helpers > > Thomas Zimmermann (25): > drm/dumb-buffers: Sanitize output on errors > drm/dumb-buffers: Provide helper to set pitch and size > drm/gem-dma: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/gem-shmem: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/gem-vram: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/armada: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/exynos: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/gma500: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/hibmc: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/imx/ipuv3: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/loongson: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/mediatek: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/msm: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/nouveau: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/omapdrm: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/qxl: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/renesas/rcar-du: Compute dumb-buffer sizes with > drm_mode_size_dumb() > drm/renesas/rz-du: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/rockchip: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/tegra: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/virtio: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/vmwgfx: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/xe: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/xen: Compute dumb-buffer sizes with drm_mode_size_dumb() > drm/xlnx: Compute dumb-buffer sizes with drm_mode_size_dumb() > > Documentation/gpu/todo.rst | 28 +++ > drivers/gpu/drm/armada/armada_gem.c | 16 +- > drivers/gpu/drm/drm_dumb_buffers.c | 172 ++++++++++++++++-- > drivers/gpu/drm/drm_gem_dma_helper.c | 7 +- > drivers/gpu/drm/drm_gem_shmem_helper.c | 16 +- > drivers/gpu/drm/drm_gem_vram_helper.c | 89 +++------ > drivers/gpu/drm/exynos/exynos_drm_gem.c | 8 +- > drivers/gpu/drm/gma500/gem.c | 21 +-- > .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 25 ++- > drivers/gpu/drm/imx/ipuv3/imx-drm-core.c | 29 ++- > drivers/gpu/drm/loongson/lsdc_gem.c | 29 +-- > drivers/gpu/drm/mediatek/mtk_gem.c | 13 +- > drivers/gpu/drm/msm/msm_gem.c | 27 ++- > drivers/gpu/drm/nouveau/nouveau_display.c | 7 +- > drivers/gpu/drm/omapdrm/omap_gem.c | 15 +- > drivers/gpu/drm/qxl/qxl_dumb.c | 17 +- > drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c | 7 +- > drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c | 7 +- > drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 12 +- > drivers/gpu/drm/tegra/gem.c | 8 +- > drivers/gpu/drm/virtio/virtgpu_gem.c | 11 +- > drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 21 +-- > drivers/gpu/drm/xe/xe_bo.c | 8 +- > drivers/gpu/drm/xen/xen_drm_front.c | 7 +- > drivers/gpu/drm/xlnx/zynqmp_kms.c | 7 +- > include/drm/drm_dumb_buffers.h | 14 ++ > include/drm/drm_gem_vram_helper.h | 6 - > include/uapi/drm/drm_mode.h | 50 ++++- > 28 files changed, 449 insertions(+), 228 deletions(-) > create mode 100644 include/drm/drm_dumb_buffers.h > -- -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstrasse 146, 90461 Nuernberg, Germany GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman HRB 36809 (AG Nuernberg)