From patchwork Fri Mar 17 12:12:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ma=C3=ADra_Canal?= X-Patchwork-Id: 13179003 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 72DBEC74A5B for ; Fri, 17 Mar 2023 12:13:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7202B10EEF1; Fri, 17 Mar 2023 12:13:26 +0000 (UTC) Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3EE8A10EEF0 for ; Fri, 17 Mar 2023 12:13:22 +0000 (UTC) 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_Canal?= 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 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 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: Melissa Wen , =?utf-8?q?Ma=C3=ADra_Canal?= , dri-devel@lists.freedesktop.org, rust-for-linux@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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;