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 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 DEC29EB64D7 for ; Tue, 20 Jun 2023 16:47:57 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D09B210E192; Tue, 20 Jun 2023 16:47:56 +0000 (UTC) Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2752310E192 for ; Tue, 20 Jun 2023 16:47:54 +0000 (UTC) Received: from pendragon.ideasonboard.com (213-243-189-158.bb.dnainternet.fi [213.243.189.158]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 1DE032B3; Tue, 20 Jun 2023 18:47:17 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1687279637; bh=jYgE5le27xQma1/Mqs7mA7Z8eqDAn9yhZZQX0YvVRis=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=GLyUiw/9qVwUqcWFa0iAR0S9IXTNPtpUTJ7z/Z1b6/jConkuiqFBkc3lHTbKs8Yad eWE18Tp8b6iIWZ7LqWO+JkzNs/GJSHaMw6FWCOQw7F1FtYtxVpIlswgrfN+YBdDK+d 0OyAMEUnRLHjj1y1tB164ODnRT/QimKG0V8x3AWo= Date: Tue, 20 Jun 2023 19:47:50 +0300 From: Laurent Pinchart To: Thomas Zimmermann Subject: Re: [PATCH 1/3] drm/rcar-du: Import buffers with GEM DMA's helpers Message-ID: <20230620164750.GE26467@pendragon.ideasonboard.com> References: <20230620121202.28263-1-tzimmermann@suse.de> <20230620121202.28263-2-tzimmermann@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230620121202.28263-2-tzimmermann@suse.de> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: hjc@rock-chips.com, mripard@kernel.org, linux-renesas-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, kieran.bingham+renesas@ideasonboard.com, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hi Thomas, Thank you for the patch. On Tue, Jun 20, 2023 at 02:03:21PM +0200, Thomas Zimmermann wrote: > Call __drm_gem_dma_create() to create an object for imported buffers, > instead of reimplementing the function within the driver. Reduces > code duplication and will later allow to un-export a number of symbols > from the GEM DMA helpers. > > Signed-off-by: Thomas Zimmermann Nice simplification. Reviewed-by: Laurent Pinchart I assume you'll merge the whole series through drm-misc, please let me know if that's not correct. > --- > drivers/gpu/drm/drm_gem_dma_helper.c | 5 +-- > drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c | 33 +++---------------- > include/drm/drm_gem_dma_helper.h | 3 ++ > 3 files changed, 10 insertions(+), 31 deletions(-) > > diff --git a/drivers/gpu/drm/drm_gem_dma_helper.c b/drivers/gpu/drm/drm_gem_dma_helper.c > index 870b90b78bc4e..e9aa3ac140654 100644 > --- a/drivers/gpu/drm/drm_gem_dma_helper.c > +++ b/drivers/gpu/drm/drm_gem_dma_helper.c > @@ -67,8 +67,8 @@ static const struct drm_gem_object_funcs drm_gem_dma_default_funcs = { > * A struct drm_gem_dma_object * on success or an ERR_PTR()-encoded negative > * error code on failure. > */ > -static struct drm_gem_dma_object * > -__drm_gem_dma_create(struct drm_device *drm, size_t size, bool private) > +struct drm_gem_dma_object *__drm_gem_dma_create(struct drm_device *drm, > + size_t size, bool private) > { > struct drm_gem_dma_object *dma_obj; > struct drm_gem_object *gem_obj; > @@ -112,6 +112,7 @@ __drm_gem_dma_create(struct drm_device *drm, size_t size, bool private) > kfree(dma_obj); > return ERR_PTR(ret); > } > +EXPORT_SYMBOL_GPL(__drm_gem_dma_create); > > /** > * drm_gem_dma_create - allocate an object with the given size > diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c > index adfb36b0e8154..ea7487e270f13 100644 > --- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c > +++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c > @@ -356,49 +356,24 @@ const struct rcar_du_format_info *rcar_du_format_info(u32 fourcc) > * Frame buffer > */ > > -static const struct drm_gem_object_funcs rcar_du_gem_funcs = { > - .free = drm_gem_dma_object_free, > - .print_info = drm_gem_dma_object_print_info, > - .get_sg_table = drm_gem_dma_object_get_sg_table, > - .vmap = drm_gem_dma_object_vmap, > - .mmap = drm_gem_dma_object_mmap, > - .vm_ops = &drm_gem_dma_vm_ops, > -}; > - > struct drm_gem_object *rcar_du_gem_prime_import_sg_table(struct drm_device *dev, > struct dma_buf_attachment *attach, > struct sg_table *sgt) > { > struct rcar_du_device *rcdu = to_rcar_du_device(dev); > struct drm_gem_dma_object *dma_obj; > - struct drm_gem_object *gem_obj; > - int ret; > > if (!rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) > return drm_gem_dma_prime_import_sg_table(dev, attach, sgt); > > - /* Create a DMA GEM buffer. */ > - dma_obj = kzalloc(sizeof(*dma_obj), GFP_KERNEL); > - if (!dma_obj) > - return ERR_PTR(-ENOMEM); > - > - gem_obj = &dma_obj->base; > - gem_obj->funcs = &rcar_du_gem_funcs; > - > - drm_gem_private_object_init(dev, gem_obj, attach->dmabuf->size); > - dma_obj->map_noncoherent = false; > - > - ret = drm_gem_create_mmap_offset(gem_obj); > - if (ret) { > - drm_gem_object_release(gem_obj); > - kfree(dma_obj); > - return ERR_PTR(ret); > - } > + dma_obj = __drm_gem_dma_create(dev, attach->dmabuf->size, true); > + if (IS_ERR(dma_obj)) > + return ERR_CAST(dma_obj); > > dma_obj->dma_addr = 0; > dma_obj->sgt = sgt; > > - return gem_obj; > + return &dma_obj->base; > } > > int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev, > diff --git a/include/drm/drm_gem_dma_helper.h b/include/drm/drm_gem_dma_helper.h > index 61da596780b64..3877cbf0e927c 100644 > --- a/include/drm/drm_gem_dma_helper.h > +++ b/include/drm/drm_gem_dma_helper.h > @@ -32,6 +32,9 @@ struct drm_gem_dma_object { > #define to_drm_gem_dma_obj(gem_obj) \ > container_of(gem_obj, struct drm_gem_dma_object, base) > > +struct drm_gem_dma_object *__drm_gem_dma_create(struct drm_device *drm, > + size_t size, bool private); > + > struct drm_gem_dma_object *drm_gem_dma_create(struct drm_device *drm, > size_t size); > void drm_gem_dma_free(struct drm_gem_dma_object *dma_obj); -- Regards, Laurent Pinchart