From patchwork Wed Mar 5 22:59:42 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 14003653 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 87364C282EC for ; Wed, 5 Mar 2025 23:08:31 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 017FE10E85D; Wed, 5 Mar 2025 23:08:31 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="Gp8HOiyX"; dkim-atps=neutral Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7FA0D10E85D for ; Wed, 5 Mar 2025 23:08:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741216108; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=JGaidaXItPxvHOgKUEqHTZ0I38IyrDd5JklCvf8qG1Y=; b=Gp8HOiyXpqGjGLLcMmjluXKufEYPkxpQp+Jp0NuL0/9ZXht/w/bP9SjAlAqFzNpUMN0Se+ g6hCvGKZKS0TOWocGs/4Ky++XZq+0rAsUB7BG/5MqyPZz713KsV0CjWZIjs0ubwSHH7OMK FQbXapj6R8fD1xwpZEVXYjr7ZtLhjeo= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-266-7W8r-8dGNmCViAT1HOLdig-1; Wed, 05 Mar 2025 18:08:27 -0500 X-MC-Unique: 7W8r-8dGNmCViAT1HOLdig-1 X-Mimecast-MFC-AGG-ID: 7W8r-8dGNmCViAT1HOLdig_1741216105 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id EB601195605E; Wed, 5 Mar 2025 23:08:24 +0000 (UTC) Received: from chopper.redhat.com (unknown [10.22.88.81]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id E4CA9300019E; Wed, 5 Mar 2025 23:08:20 +0000 (UTC) From: Lyude Paul To: dri-devel@lists.freedesktop.org, rust-for-linux@vger.kernel.org Cc: Danilo Krummrich , mcanal@igalia.com, Alice Ryhl , Maxime Ripard , Simona Vetter , Daniel Almeida , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?utf-8?q?B?= =?utf-8?q?j=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Trevor Gross , linux-kernel@vger.kernel.org (open list) Subject: [RFC v3 26/33] rust: drm/kms: Add RawPlane::framebuffer() Date: Wed, 5 Mar 2025 17:59:42 -0500 Message-ID: <20250305230406.567126-27-lyude@redhat.com> In-Reply-To: <20250305230406.567126-1-lyude@redhat.com> References: <20250305230406.567126-1-lyude@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Returns the Framebuffer currently assigned in an atomic plane state. Signed-off-by: Lyude Paul --- rust/kernel/drm/kms/framebuffer.rs | 1 - rust/kernel/drm/kms/plane.rs | 18 +++++++++++++++++- 2 files changed, 17 insertions(+), 2 deletions(-) diff --git a/rust/kernel/drm/kms/framebuffer.rs b/rust/kernel/drm/kms/framebuffer.rs index 5a60b580fe0bf..99f366e8813e2 100644 --- a/rust/kernel/drm/kms/framebuffer.rs +++ b/rust/kernel/drm/kms/framebuffer.rs @@ -66,7 +66,6 @@ impl Framebuffer { /// The caller guarantews that `ptr` points to a initialized `struct drm_framebuffer` for at /// least the entire lifetime of `'a`. #[inline] - #[allow(dead_code)] pub(super) unsafe fn from_raw<'a>(ptr: *const bindings::drm_framebuffer) -> &'a Self { // SAFETY: Our data layout is identical to drm_framebuffer unsafe { &*ptr.cast() } diff --git a/rust/kernel/drm/kms/plane.rs b/rust/kernel/drm/kms/plane.rs index 63b453b7307fd..1d50632ae473f 100644 --- a/rust/kernel/drm/kms/plane.rs +++ b/rust/kernel/drm/kms/plane.rs @@ -5,7 +5,7 @@ //! C header: [`include/drm/drm_plane.h`](srctree/include/drm/drm_plane.h) use super::{ - atomic::*, crtc::*, KmsDriver, ModeObject, ModeObjectVtable, StaticModeObject, + atomic::*, crtc::*, framebuffer::*, KmsDriver, ModeObject, ModeObjectVtable, StaticModeObject, UnregisteredKmsDevice, }; use crate::{ @@ -646,6 +646,22 @@ fn atomic_helper_check( ) }) } + + /// Return the framebuffer currently set for this plane state + #[inline] + fn framebuffer(&self) -> Option<&Framebuffer> + where + Self::Plane: ModeObject, + D: KmsDriver, + { + // SAFETY: The layout of Framebuffer is identical to `fb` + unsafe { + self.as_raw() + .fb + .as_ref() + .map(|fb| Framebuffer::from_raw(fb)) + } + } } impl RawPlaneState for T {}