From patchwork Thu Jun 24 09:01:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 12341575 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=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 B7492C48BDF for ; Thu, 24 Jun 2021 09:01:30 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 85EBF613DC for ; Thu, 24 Jun 2021 09:01:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 85EBF613DC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0F6C16EB21; Thu, 24 Jun 2021 09:01:30 +0000 (UTC) Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by gabe.freedesktop.org (Postfix) with ESMTPS id 40CBE6EB21 for ; Thu, 24 Jun 2021 09:01:29 +0000 (UTC) Received: from imap.suse.de (imap-alt.suse-dmz.suse.de [192.168.254.47]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id EFC1E1FD67; Thu, 24 Jun 2021 09:01:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1624525287; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=WeFdz/kJ2fXFQntdDnyvQsFkSruz68h83Slej1PZ9qg=; b=AfmRvipDjPguqpHQsCDwGgRttH86X9WIJRl5SF854v2LOw62GFwg9pMv8xHkbn5fMK/UT3 PkQjk9NieVig+U3rhaIMiD/z5GGxyHxNsaGah8d3Jp7e5fDPnyv1sv8TZCHJlejCp0iAvT KHDQrXLq3hkR6lcYahZAuzU4k5cSdTs= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1624525287; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=WeFdz/kJ2fXFQntdDnyvQsFkSruz68h83Slej1PZ9qg=; b=HyssKNSKMT8f4DPPkbmfMZXfs15pnriQZpJiZpQNhim23M+dvydLiN+Wf5pLutgUNXWKiM AjgwaSKXfGWmjqBA== Received: from imap3-int (imap-alt.suse-dmz.suse.de [192.168.254.47]) by imap.suse.de (Postfix) with ESMTP id B45E111A97; Thu, 24 Jun 2021 09:01:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1624525287; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=WeFdz/kJ2fXFQntdDnyvQsFkSruz68h83Slej1PZ9qg=; b=AfmRvipDjPguqpHQsCDwGgRttH86X9WIJRl5SF854v2LOw62GFwg9pMv8xHkbn5fMK/UT3 PkQjk9NieVig+U3rhaIMiD/z5GGxyHxNsaGah8d3Jp7e5fDPnyv1sv8TZCHJlejCp0iAvT KHDQrXLq3hkR6lcYahZAuzU4k5cSdTs= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1624525287; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=WeFdz/kJ2fXFQntdDnyvQsFkSruz68h83Slej1PZ9qg=; b=HyssKNSKMT8f4DPPkbmfMZXfs15pnriQZpJiZpQNhim23M+dvydLiN+Wf5pLutgUNXWKiM AjgwaSKXfGWmjqBA== Received: from director2.suse.de ([192.168.254.72]) by imap3-int with ESMTPSA id CJ4MK+dJ1GCGMwAALh3uQQ (envelope-from ); Thu, 24 Jun 2021 09:01:27 +0000 From: Thomas Zimmermann To: chunkuang.hu@kernel.org, p.zabel@pengutronix.de, airlied@linux.ie, daniel@ffwll.ch, matthias.bgg@gmail.com Subject: [PATCH] drm/mediatek: Implement mmap as GEM object function Date: Thu, 24 Jun 2021 11:01:26 +0200 Message-Id: <20210624090126.8167-1-tzimmermann@suse.de> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 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: Thomas Zimmermann , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Moving the driver-specific mmap code into a GEM object function allows for using DRM helpers for various mmap callbacks. The respective mediatek functions are being removed. The file_operations structure fops is now being created by the helper macro DEFINE_DRM_GEM_FOPS(). Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 13 ++------ drivers/gpu/drm/mediatek/mtk_drm_gem.c | 44 +++++++------------------- drivers/gpu/drm/mediatek/mtk_drm_gem.h | 3 -- 3 files changed, 14 insertions(+), 46 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index b46bdb8985da..bbfefb29c211 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -300,16 +300,7 @@ static void mtk_drm_kms_deinit(struct drm_device *drm) component_unbind_all(drm->dev, drm); } -static const struct file_operations mtk_drm_fops = { - .owner = THIS_MODULE, - .open = drm_open, - .release = drm_release, - .unlocked_ioctl = drm_ioctl, - .mmap = mtk_drm_gem_mmap, - .poll = drm_poll, - .read = drm_read, - .compat_ioctl = drm_compat_ioctl, -}; +DEFINE_DRM_GEM_FOPS(mtk_drm_fops); /* * We need to override this because the device used to import the memory is @@ -332,7 +323,7 @@ static const struct drm_driver mtk_drm_driver = { .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_import = mtk_drm_gem_prime_import, .gem_prime_import_sg_table = mtk_gem_prime_import_sg_table, - .gem_prime_mmap = mtk_drm_gem_mmap_buf, + .gem_prime_mmap = drm_gem_prime_mmap, .fops = &mtk_drm_fops, .name = DRIVER_NAME, diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.c b/drivers/gpu/drm/mediatek/mtk_drm_gem.c index 280ea0d5e840..d0544962cfc1 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_gem.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.c @@ -14,11 +14,14 @@ #include "mtk_drm_drv.h" #include "mtk_drm_gem.h" +static int mtk_drm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); + static const struct drm_gem_object_funcs mtk_drm_gem_object_funcs = { .free = mtk_drm_gem_free_object, .get_sg_table = mtk_gem_prime_get_sg_table, .vmap = mtk_drm_gem_prime_vmap, .vunmap = mtk_drm_gem_prime_vunmap, + .mmap = mtk_drm_gem_object_mmap, .vm_ops = &drm_gem_cma_vm_ops, }; @@ -145,11 +148,19 @@ static int mtk_drm_gem_object_mmap(struct drm_gem_object *obj, struct mtk_drm_gem_obj *mtk_gem = to_mtk_gem_obj(obj); struct mtk_drm_private *priv = obj->dev->dev_private; + /* + * Set vm_pgoff (used as a fake buffer offset by DRM) to 0 and map the + * whole buffer from the start. + */ + vma->vm_pgoff = 0; + /* * dma_alloc_attrs() allocated a struct page table for mtk_gem, so clear * VM_PFNMAP flag that was set by drm_gem_mmap_obj()/drm_gem_mmap(). */ - vma->vm_flags &= ~VM_PFNMAP; + vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; + vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); + vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); ret = dma_mmap_attrs(priv->dma_dev, vma, mtk_gem->cookie, mtk_gem->dma_addr, obj->size, mtk_gem->dma_attrs); @@ -159,37 +170,6 @@ static int mtk_drm_gem_object_mmap(struct drm_gem_object *obj, return ret; } -int mtk_drm_gem_mmap_buf(struct drm_gem_object *obj, struct vm_area_struct *vma) -{ - int ret; - - ret = drm_gem_mmap_obj(obj, obj->size, vma); - if (ret) - return ret; - - return mtk_drm_gem_object_mmap(obj, vma); -} - -int mtk_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) -{ - struct drm_gem_object *obj; - int ret; - - ret = drm_gem_mmap(filp, vma); - if (ret) - return ret; - - obj = vma->vm_private_data; - - /* - * Set vm_pgoff (used as a fake buffer offset by DRM) to 0 and map the - * whole buffer from the start. - */ - vma->vm_pgoff = 0; - - return mtk_drm_gem_object_mmap(obj, vma); -} - /* * Allocate a sg_table for this GEM object. * Note: Both the table's contents, and the sg_table itself must be freed by diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.h b/drivers/gpu/drm/mediatek/mtk_drm_gem.h index 6da5ccb4b933..9a359a06cb73 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_gem.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.h @@ -39,9 +39,6 @@ struct mtk_drm_gem_obj *mtk_drm_gem_create(struct drm_device *dev, size_t size, bool alloc_kmap); int mtk_drm_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev, struct drm_mode_create_dumb *args); -int mtk_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); -int mtk_drm_gem_mmap_buf(struct drm_gem_object *obj, - struct vm_area_struct *vma); struct sg_table *mtk_gem_prime_get_sg_table(struct drm_gem_object *obj); struct drm_gem_object *mtk_gem_prime_import_sg_table(struct drm_device *dev, struct dma_buf_attachment *attach, struct sg_table *sg);