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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 57B04C74A5B for ; Fri, 17 Mar 2023 12:13:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230028AbjCQMNi (ORCPT ); Fri, 17 Mar 2023 08:13:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58510 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230031AbjCQMNc (ORCPT ); Fri, 17 Mar 2023 08:13:32 -0400 Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D703214E9A for ; Fri, 17 Mar 2023 05:13:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=hmWHlCmiofIyKwpwtriUZ+4xsHHrXTvx5Jjwzs3UrCw=; b=ZG8jDIQ/ZyfR4gr55yegtKZOhk h/qPeXAc5kJUB8mokOMDsC0gNKfFYHrKSBxp86ZO6euc8B/Uu7ngtj8UrCBp0BCgjDeysLqVSIDtr Kl4WFlW92pg+HFFBjXIRpgWgOWI7rvyhZDzP71l2OmtiYGRcBB3iqlu6y0kKcZnDU/lZ0FwUBXTjj RLimdGjJ40TAzlEwhwFFLboPwW0B6aMPsUF024UZ5uSOniqs5EZnCuCXlB16kJgu9iRKP2hNq0K6a jE58eM7QWYcWOirHwzvsaYxeCyrgeZDWlJC9LvvR3KKDK/vtgJGuXPBxZmVbGvNJIOJLOMaZefVgJ IbX9nB4Q==; Received: from [177.34.168.16] (helo=bowie..) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1pd8xG-00FrGz-8J; Fri, 17 Mar 2023 13:13:06 +0100 From: =?UTF-8?q?Ma=C3=ADra=20Canal?= To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Miguel Ojeda , Alex Gaynor , Wedson Almeida Filho , Boqun Feng , Gary Guo , Asahi Lina , Faith Ekstrand Cc: rust-for-linux@vger.kernel.org, dri-devel@lists.freedesktop.org, Melissa Wen , =?UTF-8?q?Ma=C3=ADra=20Canal?= Subject: [RFC PATCH 2/9] rust: drm: gem: add method to return DmaResv from GEMObject Date: Fri, 17 Mar 2023 09:12:06 -0300 Message-Id: <20230317121213.93991-3-mcanal@igalia.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230317121213.93991-1-mcanal@igalia.com> References: <20230317121213.93991-1-mcanal@igalia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: rust-for-linux@vger.kernel.org A GEMObject, related to struct drm_gem_object, holds a pointer to reservation object associated with the this GEM object. Therefore, expose this reservation object through the DmaResv safe abstraction. Signed-off-by: Maíra Canal --- rust/kernel/drm/gem/mod.rs | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/rust/kernel/drm/gem/mod.rs b/rust/kernel/drm/gem/mod.rs index c4a42bb2f718..dae95e5748a7 100644 --- a/rust/kernel/drm/gem/mod.rs +++ b/rust/kernel/drm/gem/mod.rs @@ -11,6 +11,7 @@ use alloc::boxed::Box; use crate::{ bindings, + dma_resv::DmaResv, drm::{device, drv, file}, error::{to_result, Result}, prelude::*, @@ -136,6 +137,12 @@ pub trait BaseObject: IntoGEMObject { self.gem_obj().size } + /// Returns the pointer to reservation object associated with this GEM object. + fn resv(&self) -> DmaResv { + // SAFETY: Every GEM object holds a reference to a reservation object + unsafe { DmaResv::from_raw(self.gem_obj().resv) } + } + /// Sets the exportable flag, which controls whether the object can be exported via PRIME. fn set_exportable(&mut self, exportable: bool) { self.mut_gem_obj().exportable = exportable; -- 2.39.2