From patchwork Wed Nov 27 09:25:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 11263657 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 67275138C for ; Wed, 27 Nov 2019 09:25:39 +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 4DD7220835 for ; Wed, 27 Nov 2019 09:25:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4DD7220835 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3E4066E4EC; Wed, 27 Nov 2019 09:25:38 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from us-smtp-delivery-1.mimecast.com (us-smtp-2.mimecast.com [207.211.31.81]) by gabe.freedesktop.org (Postfix) with ESMTPS id B996D6E4EA for ; Wed, 27 Nov 2019 09:25:36 +0000 (UTC) Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-71-dXB4TUW-Mp2wEqg0FREWHA-1; Wed, 27 Nov 2019 04:25:32 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0503F593D5; Wed, 27 Nov 2019 09:25:30 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-116-67.ams2.redhat.com [10.36.116.67]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9D50C5C219; Wed, 27 Nov 2019 09:25:24 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id DB03E9DA4; Wed, 27 Nov 2019 10:25:23 +0100 (CET) From: Gerd Hoffmann To: dri-devel@lists.freedesktop.org Date: Wed, 27 Nov 2019 10:25:22 +0100 Message-Id: <20191127092523.5620-2-kraxel@redhat.com> In-Reply-To: <20191127092523.5620-1-kraxel@redhat.com> References: <20191127092523.5620-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-MC-Unique: dXB4TUW-Mp2wEqg0FREWHA-1 X-Mimecast-Spam-Score: 0 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1574846735; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=gHa4/Cq6deskcCOJjWjfn9nM/j9wpDJD9Nm25+gtRCo=; b=QP/wuC7z4xFU6TumbcZVRGFjgq3ULdHQwuR4fHYxPHk/4fOBcP6Jd2GAM/ZWENza+zgoXo 4c/CNBNazE2p4ntHUVEC+2Fba/xjH+YWSLSqapiPX82Ltyc0oADVLXOG4MhdIFT1U/q7Bn 5kCUy5RY2plcyzzngI8W+tS3cNOhiKY= Subject: [Intel-gfx] [PATCH v3 1/2] drm: call drm_gem_object_funcs.mmap with fake offset X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: robh@kernel.org, David Airlie , Daniel Vetter , intel-gfx@lists.freedesktop.org, open list , Maxime Ripard , Huang Rui , Gerd Hoffmann , Christian Koenig MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" The fake offset is going to stay, so change the calling convention for drm_gem_object_funcs.mmap to include the fake offset. Update all users accordingly. Note that this reverts 83b8a6f242ea ("drm/gem: Fix mmap fake offset handling for drm_gem_object_funcs.mmap") and on top then adds the fake offset to drm_gem_prime_mmap to make sure all paths leading to obj->funcs->mmap are consistent. v3: move fake-offset tweak in drm_gem_prime_mmap() so we have this code only once in the function (Rob Herring). Fixes: 83b8a6f242ea ("drm/gem: Fix mmap fake offset handling for drm_gem_object_funcs.mmap") Cc: Daniel Vetter Cc: Rob Herring Signed-off-by: Gerd Hoffmann Reviewed-by: Daniel Vetter --- include/drm/drm_gem.h | 4 +--- drivers/gpu/drm/drm_gem.c | 3 --- drivers/gpu/drm/drm_gem_shmem_helper.c | 3 +++ drivers/gpu/drm/drm_prime.c | 5 +++-- drivers/gpu/drm/ttm/ttm_bo_vm.c | 7 ------- 5 files changed, 7 insertions(+), 15 deletions(-) diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h index 97a48165642c..0b375069cd48 100644 --- a/include/drm/drm_gem.h +++ b/include/drm/drm_gem.h @@ -159,9 +159,7 @@ struct drm_gem_object_funcs { * * The callback is used by by both drm_gem_mmap_obj() and * drm_gem_prime_mmap(). When @mmap is present @vm_ops is not - * used, the @mmap callback must set vma->vm_ops instead. The @mmap - * callback is always called with a 0 offset. The caller will remove - * the fake offset as necessary. + * used, the @mmap callback must set vma->vm_ops instead. */ int (*mmap)(struct drm_gem_object *obj, struct vm_area_struct *vma); diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index 2f2b889096b0..56f42e0f2584 100644 --- a/drivers/gpu/drm/drm_gem.c +++ b/drivers/gpu/drm/drm_gem.c @@ -1106,9 +1106,6 @@ int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, return -EINVAL; if (obj->funcs && obj->funcs->mmap) { - /* Remove the fake offset */ - vma->vm_pgoff -= drm_vma_node_start(&obj->vma_node); - ret = obj->funcs->mmap(obj, vma); if (ret) return ret; diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index 0810d3ef6961..a421a2eed48a 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -528,6 +528,9 @@ int drm_gem_shmem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) struct drm_gem_shmem_object *shmem; int ret; + /* Remove the fake offset */ + vma->vm_pgoff -= drm_vma_node_start(&obj->vma_node); + shmem = to_drm_gem_shmem_obj(obj); ret = drm_gem_shmem_get_pages(shmem); diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 0814211b0f3f..a0f929c7117b 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -713,6 +713,9 @@ int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) struct file *fil; int ret; + /* Add the fake offset */ + vma->vm_pgoff += drm_vma_node_start(&obj->vma_node); + if (obj->funcs && obj->funcs->mmap) { ret = obj->funcs->mmap(obj, vma); if (ret) @@ -737,8 +740,6 @@ int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) if (ret) goto out; - vma->vm_pgoff += drm_vma_node_start(&obj->vma_node); - ret = obj->dev->driver->fops->mmap(fil, vma); drm_vma_node_revoke(&obj->vma_node, priv); diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index e6495ca2630b..3e8c3de91ae4 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -514,13 +514,6 @@ EXPORT_SYMBOL(ttm_bo_mmap); int ttm_bo_mmap_obj(struct vm_area_struct *vma, struct ttm_buffer_object *bo) { ttm_bo_get(bo); - - /* - * FIXME: &drm_gem_object_funcs.mmap is called with the fake offset - * removed. Add it back here until the rest of TTM works without it. - */ - vma->vm_pgoff += drm_vma_node_start(&bo->base.vma_node); - ttm_bo_mmap_vma_setup(bo, vma); return 0; }